/**
 * Copyright (c) 2021 OceanBase
 * OceanBase CE is licensed under Mulan PubL v2.
 * You can use this software according to the terms and conditions of the Mulan PubL v2.
 * You may obtain a copy of Mulan PubL v2 at:
 *          http://license.coscl.org.cn/MulanPubL-2.0
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PubL v2 for more details.
 */

#ifndef OCEANBASE_COMMON_OB_OBJECT_H_
#define OCEANBASE_COMMON_OB_OBJECT_H_

#include "lib/ob_define.h"
#include "lib/string/ob_string.h"
#include "common/ob_action_flag.h"
#include "common/object/ob_obj_type.h"
#include "common/ob_accuracy.h"
#include "lib/checksum/ob_crc64.h"
#include "lib/number/ob_number_v2.h"
#include "lib/charset/ob_charset.h"
#include "lib/timezone/ob_timezone_info.h"
#include "lib/hash/ob_hashutils.h"
#include "lib/hash_func/ob_hash_func.h"
#include "lib/charset/ob_dtoa.h"
#include "lib/rowid/ob_urowid.h"

namespace oceanbase {
namespace tests {
namespace common {
class ObjTest;
class ObSqlString;
}  // namespace common
}  // namespace tests
namespace common {

struct ObCompareCtx;
enum ObCmpNullPos { NULL_LAST = 1, NULL_FIRST, MAX_NULL_POS };

inline ObCmpNullPos default_null_pos()
{
  return lib::is_oracle_mode() ? NULL_LAST : NULL_FIRST;
}

struct ObEnumSetInnerValue {
  OB_UNIS_VERSION_V(1);

public:
  ObEnumSetInnerValue() : numberic_value_(0), string_value_()
  {}
  ObEnumSetInnerValue(uint64_t numberic_value, common::ObString& string_value)
      : numberic_value_(numberic_value), string_value_(string_value)
  {}
  virtual ~ObEnumSetInnerValue()
  {}

  TO_STRING_KV(K_(numberic_value), K_(string_value));
  uint64_t numberic_value_;
  common::ObString string_value_;
};

struct ObLobScale {
  static const uint8_t LOB_SCALE_MASK = 0xF;
  enum StorageType { STORE_IN_ROW = 0, STORE_OUT_ROW };
  union {
    int8_t scale_;
    struct {
      uint8_t reserve_ : 4;
      uint8_t type_ : 4;
    };
  };
  ObLobScale() : scale_(0)
  {}
  ObLobScale(const ObScale scale) : scale_(static_cast<const int8_t>(scale))
  {
    reserve_ = 0;
  }
  OB_INLINE void reset()
  {
    scale_ = 0;
  }
  OB_INLINE bool is_valid()
  {
    return STORE_IN_ROW == type_ || STORE_OUT_ROW == type_;
  }
  OB_INLINE void set_in_row()
  {
    reserve_ = 0;
    type_ = STORE_IN_ROW;
  }
  OB_INLINE void set_out_row()
  {
    reserve_ = 0;
    type_ = STORE_OUT_ROW;
  }
  OB_INLINE bool is_in_row() const
  {
    return type_ == STORE_IN_ROW;
  }
  OB_INLINE bool is_out_row() const
  {
    return type_ == STORE_OUT_ROW;
  }
  OB_INLINE ObScale get_scale() const
  {
    return static_cast<ObScale>(scale_);
  }
  TO_STRING_KV(K_(scale));
};

class ObObjMeta {
public:
  ObObjMeta() : type_(ObNullType), cs_level_(CS_LEVEL_INVALID), cs_type_(CS_TYPE_INVALID), scale_(-1)
  {}

  OB_INLINE bool operator==(const ObObjMeta& other) const
  {
    return (type_ == other.type_ && cs_level_ == other.cs_level_ && cs_type_ == other.cs_type_);
  }
  OB_INLINE bool operator!=(const ObObjMeta& other) const
  {
    return !this->operator==(other);
  }
  // this method is inefficient, you'd better use set_tinyint() etc. instead
  OB_INLINE void set_type(const ObObjType& type)
  {
    type_ = static_cast<uint8_t>(type);
    if (ObNullType == type_) {
      set_collation_level(CS_LEVEL_IGNORABLE);
      set_collation_type(CS_TYPE_BINARY);
    } else if (ObUnknownType == type_ || ObExtendType == type_) {
      set_collation_level(CS_LEVEL_INVALID);
      set_collation_type(CS_TYPE_INVALID);
    } else if (ObHexStringType == type_) {
      set_collation_type(CS_TYPE_BINARY);
    } else if (ob_is_json(static_cast<ObObjType>(type_))) {
      set_collation_type(CS_TYPE_UTF8MB4_BIN);
    } else if (!ob_is_string_type(static_cast<ObObjType>(type_)) && 
               !ob_is_lob_locator(static_cast<ObObjType>(type_)) &&
               !ob_is_raw(static_cast<ObObjType>(type_)) && 
               !ob_is_enum_or_set_type(static_cast<ObObjType>(type_))) {
      set_collation_level(CS_LEVEL_NUMERIC);
      set_collation_type(CS_TYPE_BINARY);
    }
  }
  OB_INLINE void set_type_simple(const ObObjType& type)
  {
    type_ = static_cast<uint8_t>(type);
  }
  // in greatest case need manually set numeric collation,
  // e.g greatest(2, 'x') => type=varchar,collation=binary,cmp_collation=utf8
  OB_INLINE void set_numeric_collation()
  {
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_meta(const ObObjMeta& meta)
  {
    type_ = meta.type_;
    cs_level_ = meta.cs_level_;
    cs_type_ = meta.cs_type_;
    scale_ = meta.scale_;
  }
  OB_INLINE void reset()
  {
    type_ = ObNullType;
    cs_level_ = CS_LEVEL_INVALID;
    cs_type_ = CS_TYPE_INVALID;
    scale_ = -1;
  }

  OB_INLINE ObObjType get_type() const
  {
    return static_cast<ObObjType>(type_);
  }
  OB_INLINE ObObjOType get_oracle_type() const
  {
    return ob_obj_type_to_oracle_type(static_cast<ObObjType>(type_));
  }
  OB_INLINE const ObObjMeta& get_obj_meta() const
  {
    return *this;
  }
  OB_INLINE ObObjTypeClass get_type_class() const
  {
    return ob_obj_type_class(get_type());
  }
  OB_INLINE ObObjTypeClass get_type_class_for_oracle() const
  {
    return ob_oracle_type_class(get_type());
  }

  OB_INLINE void set_null()
  {
    type_ = static_cast<uint8_t>(ObNullType);
    set_collation_level(CS_LEVEL_IGNORABLE);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_tinyint()
  {
    type_ = static_cast<uint8_t>(ObTinyIntType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_smallint()
  {
    type_ = static_cast<uint8_t>(ObSmallIntType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_mediumint()
  {
    type_ = static_cast<uint8_t>(ObMediumIntType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_int32()
  {
    type_ = static_cast<uint8_t>(ObInt32Type);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_int()
  {
    type_ = static_cast<uint8_t>(ObIntType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_utinyint()
  {
    type_ = static_cast<uint8_t>(ObUTinyIntType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_usmallint()
  {
    type_ = static_cast<uint8_t>(ObUSmallIntType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_umediumint()
  {
    type_ = static_cast<uint8_t>(ObUMediumIntType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_uint32()
  {
    type_ = static_cast<uint8_t>(ObUInt32Type);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_uint64()
  {
    type_ = static_cast<uint8_t>(ObUInt64Type);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_float()
  {
    type_ = static_cast<uint8_t>(ObFloatType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_double()
  {
    type_ = static_cast<uint8_t>(ObDoubleType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_ufloat()
  {
    type_ = static_cast<uint8_t>(ObUFloatType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_udouble()
  {
    type_ = static_cast<uint8_t>(ObUDoubleType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_number()
  {
    type_ = static_cast<uint8_t>(ObNumberType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_unumber()
  {
    type_ = static_cast<uint8_t>(ObUNumberType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_number_float()
  {
    type_ = static_cast<uint8_t>(ObNumberFloatType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_datetime()
  {
    type_ = static_cast<uint8_t>(ObDateTimeType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_timestamp()
  {
    type_ = static_cast<uint8_t>(ObTimestampType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_year()
  {
    type_ = static_cast<uint8_t>(ObYearType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_date()
  {
    type_ = static_cast<uint8_t>(ObDateType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_time()
  {
    type_ = static_cast<uint8_t>(ObTimeType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_varchar()
  {
    type_ = static_cast<uint8_t>(ObVarcharType);
  }
  OB_INLINE void set_char()
  {
    type_ = static_cast<uint8_t>(ObCharType);
  }
  OB_INLINE void set_varbinary()
  {
    type_ = static_cast<uint8_t>(ObVarcharType);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_binary()
  {
    type_ = static_cast<uint8_t>(ObCharType);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_hex_string()
  {
    type_ = static_cast<uint8_t>(ObHexStringType);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_raw()
  {
    type_ = static_cast<uint8_t>(ObRawType);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_ext()
  {
    type_ = static_cast<uint8_t>(ObExtendType);
    set_collation_level(CS_LEVEL_INVALID);
    set_collation_type(CS_TYPE_INVALID);
  }
  OB_INLINE void set_unknown()
  {
    type_ = static_cast<uint8_t>(ObUnknownType);
    set_collation_level(CS_LEVEL_INVALID);
    set_collation_type(CS_TYPE_INVALID);
    set_extend_type(0);
  }
  OB_INLINE void set_bit()
  {
    type_ = static_cast<uint8_t>(ObBitType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  // TODO():collation_level, collation_type
  OB_INLINE void set_enum()
  {
    type_ = static_cast<uint8_t>(ObEnumType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_set()
  {
    type_ = static_cast<uint8_t>(ObSetType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_enum_inner()
  {
    type_ = static_cast<uint8_t>(ObEnumInnerType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_set_inner()
  {
    type_ = static_cast<uint8_t>(ObSetInnerType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }

  OB_INLINE void set_clob()
  {
    type_ = static_cast<uint8_t>(ObLongTextType);
    lob_scale_.set_in_row();
    set_default_collation_type();
  }
  OB_INLINE void set_blob()
  {
    type_ = static_cast<uint8_t>(ObLongTextType);
    lob_scale_.set_in_row();
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_lob_inrow()
  {
    lob_scale_.set_in_row();
  }
  OB_INLINE void set_lob_outrow()
  {
    lob_scale_.set_out_row();
  }
  OB_INLINE void set_json()
  {
    type_ = static_cast<uint8_t>(ObJsonType);
    lob_scale_.set_in_row();
    set_collation_level(CS_LEVEL_IMPLICIT);
    set_collation_type(CS_TYPE_UTF8MB4_BIN);
  }
  OB_INLINE void set_otimestamp_type(const ObObjType type)
  {
    type_ = static_cast<uint8_t>(type);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_timestamp_tz()
  {
    set_otimestamp_type(ObTimestampTZType);
  }
  OB_INLINE void set_timestamp_ltz()
  {
    set_otimestamp_type(ObTimestampLTZType);
  }
  OB_INLINE void set_timestamp_nano()
  {
    set_otimestamp_type(ObTimestampNanoType);
  }
  OB_INLINE void set_interval_ym()
  {
    type_ = static_cast<uint8_t>(ObIntervalYMType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_interval_ds()
  {
    type_ = static_cast<uint8_t>(ObIntervalDSType);
    set_collation_level(CS_LEVEL_NUMERIC);
    set_collation_type(CS_TYPE_BINARY);
  }
  OB_INLINE void set_nvarchar2()
  {
    type_ = static_cast<uint8_t>(ObNVarchar2Type);
  }
  OB_INLINE void set_nchar()
  {
    type_ = static_cast<uint8_t>(ObNCharType);
  }
  OB_INLINE void set_urowid()
  {
    type_ = static_cast<uint8_t>(ObURowIDType);
    set_collation_level(CS_LEVEL_INVALID);
    set_collation_type(CS_TYPE_BINARY);
  }

  OB_INLINE void set_clob_locator()
  {
    type_ = static_cast<uint8_t>(ObLobType);
    set_default_collation_type();
  }
  OB_INLINE void set_blob_locator()
  {
    type_ = static_cast<uint8_t>(ObLobType);
    set_collation_type(CS_TYPE_BINARY);
  }

  OB_INLINE bool is_valid() const
  {
    return ob_is_valid_obj_type(static_cast<ObObjType>(type_));
  }
  OB_INLINE bool is_invalid() const
  {
    return !ob_is_valid_obj_type(static_cast<ObObjType>(type_));
  }

  OB_INLINE bool is_null() const
  {
    return type_ == static_cast<uint8_t>(ObNullType);
  }
  OB_INLINE bool is_tinyint() const
  {
    return type_ == static_cast<uint8_t>(ObTinyIntType);
  }
  OB_INLINE bool is_smallint() const
  {
    return type_ == static_cast<uint8_t>(ObSmallIntType);
  }
  OB_INLINE bool is_mediumint() const
  {
    return type_ == static_cast<uint8_t>(ObMediumIntType);
  }
  OB_INLINE bool is_int32() const
  {
    return type_ == static_cast<uint8_t>(ObInt32Type);
  }
  OB_INLINE bool is_int() const
  {
    return type_ == static_cast<uint8_t>(ObIntType);
  }
  OB_INLINE bool is_utinyint() const
  {
    return type_ == static_cast<uint8_t>(ObUTinyIntType);
  }
  OB_INLINE bool is_usmallint() const
  {
    return type_ == static_cast<uint8_t>(ObUSmallIntType);
  }
  OB_INLINE bool is_umediumint() const
  {
    return type_ == static_cast<uint8_t>(ObUMediumIntType);
  }
  OB_INLINE bool is_uint32() const
  {
    return type_ == static_cast<uint8_t>(ObUInt32Type);
  }
  OB_INLINE bool is_uint64() const
  {
    return type_ == static_cast<uint8_t>(ObUInt64Type);
  }
  OB_INLINE bool is_float() const
  {
    return type_ == static_cast<uint8_t>(ObFloatType);
  }
  OB_INLINE bool is_double() const
  {
    return type_ == static_cast<uint8_t>(ObDoubleType);
  }
  OB_INLINE bool is_ufloat() const
  {
    return type_ == static_cast<uint8_t>(ObUFloatType);
  }
  OB_INLINE bool is_udouble() const
  {
    return type_ == static_cast<uint8_t>(ObUDoubleType);
  }
  OB_INLINE bool is_number() const
  {
    return type_ == static_cast<uint8_t>(ObNumberType);
  }
  OB_INLINE bool is_unumber() const
  {
    return type_ == static_cast<uint8_t>(ObUNumberType);
  }
  OB_INLINE bool is_number_float() const
  {
    return type_ == static_cast<uint8_t>(ObNumberFloatType);
  }
  OB_INLINE bool is_datetime() const
  {
    return type_ == static_cast<uint8_t>(ObDateTimeType);
  }
  OB_INLINE bool is_timestamp() const
  {
    return type_ == static_cast<uint8_t>(ObTimestampType);
  }
  OB_INLINE bool is_year() const
  {
    return type_ == static_cast<uint8_t>(ObYearType);
  }
  OB_INLINE bool is_date() const
  {
    return type_ == static_cast<uint8_t>(ObDateType);
  }
  OB_INLINE bool is_time() const
  {
    return type_ == static_cast<uint8_t>(ObTimeType);
  }
  OB_INLINE bool is_timestamp_tz() const
  {
    return type_ == static_cast<uint8_t>(ObTimestampTZType);
  }
  OB_INLINE bool is_timestamp_ltz() const
  {
    return type_ == static_cast<uint8_t>(ObTimestampLTZType);
  }
  OB_INLINE bool is_timestamp_nano() const
  {
    return type_ == static_cast<uint8_t>(ObTimestampNanoType);
  }
  OB_INLINE bool is_interval_ym() const
  {
    return type_ == static_cast<uint8_t>(ObIntervalYMType);
  }
  OB_INLINE bool is_interval_ds() const
  {
    return type_ == static_cast<uint8_t>(ObIntervalDSType);
  }
  OB_INLINE bool is_nvarchar2() const
  {
    return type_ == static_cast<uint8_t>(ObNVarchar2Type);
  }
  OB_INLINE bool is_nchar() const
  {
    return type_ == static_cast<uint8_t>(ObNCharType);
  }
  OB_INLINE bool is_varchar() const
  {
    return ((type_ == static_cast<uint8_t>(ObVarcharType)) && (CS_TYPE_BINARY != cs_type_));
  }
  OB_INLINE bool is_char() const
  {
    return ((type_ == static_cast<uint8_t>(ObCharType)) && (CS_TYPE_BINARY != cs_type_));
  }
  OB_INLINE bool is_varbinary() const
  {
    return (type_ == static_cast<uint8_t>(ObVarcharType) && CS_TYPE_BINARY == cs_type_);
  }
  static bool is_binary(const ObObjType type, const ObCollationType cs_type)
  {
    return (ObCharType == type && CS_TYPE_BINARY == cs_type);
  }
  OB_INLINE bool is_binary() const
  {
    return is_binary(static_cast<ObObjType>(type_), static_cast<ObCollationType>(cs_type_));
  }
  OB_INLINE bool is_cs_collation_free() const
  {
    return cs_type_ == CS_TYPE_UTF8MB4_GENERAL_CI || cs_type_ == CS_TYPE_UTF8MB4_BIN;
  }
  OB_INLINE bool is_hex_string() const
  {
    return type_ == static_cast<uint8_t>(ObHexStringType);
  }
  OB_INLINE bool is_raw() const
  {
    return type_ == static_cast<uint8_t>(ObRawType);
  }
  OB_INLINE bool is_ext() const
  {
    return type_ == static_cast<uint8_t>(ObExtendType);
  }
  OB_INLINE bool is_unknown() const
  {
    return type_ == static_cast<uint8_t>(ObUnknownType);
  }
  OB_INLINE bool is_bit() const
  {
    return type_ == static_cast<uint8_t>(ObBitType);
  }
  OB_INLINE bool is_enum() const
  {
    return type_ == static_cast<uint8_t>(ObEnumType);
  }
  OB_INLINE bool is_set() const
  {
    return type_ == static_cast<uint8_t>(ObSetType);
  }
  OB_INLINE bool is_enum_or_set() const
  {
    return type_ == static_cast<uint8_t>(ObEnumType) || type_ == static_cast<uint8_t>(ObSetType);
  }
  OB_INLINE bool is_text() const
  {
    return (ob_is_text_tc(get_type()) && CS_TYPE_BINARY != cs_type_);
  }
  /*OB_INLINE bool is_oracle_clob() const
  {
    return (lib::is_oracle_mode() && ObLongTextType == get_type() && CS_TYPE_BINARY != cs_type_);
  }*/
  OB_INLINE bool is_clob() const
  {
    return (lib::is_oracle_mode() && ObLongTextType == get_type() && CS_TYPE_BINARY != cs_type_);
  }
  /*OB_INLINE bool is_oracle_blob() const
  {
    return (lib::is_oracle_mode() && ObLongTextType == get_type() && CS_TYPE_BINARY == cs_type_);
  }*/
  OB_INLINE bool is_blob() const
  {
    return (ob_is_text_tc(get_type()) && CS_TYPE_BINARY == cs_type_);
  }
  OB_INLINE bool is_lob() const
  {
    return ob_is_text_tc(get_type());
  }
  OB_INLINE bool is_lob_inrow() const
  {
    return is_lob() && lob_scale_.is_in_row();
  }
  OB_INLINE bool is_lob_outrow() const
  {
    return is_lob() && lob_scale_.is_out_row();
  }
  OB_INLINE bool is_json() const 
  { 
    return type_ == static_cast<uint8_t>(ObJsonType); 
  }
  OB_INLINE bool is_json_inrow() const 
  { 
    return is_json() && lob_scale_.is_in_row(); 
  }
  OB_INLINE bool is_json_outrow() const 
  { 
    return is_json() && lob_scale_.is_out_row(); 
  }
  // combination of above functions.
  OB_INLINE bool is_varbinary_or_binary() const
  {
    return is_varbinary() || is_binary();
  }
  OB_INLINE bool is_varchar_or_char() const
  {
    return is_varchar() || is_char();
  }
  OB_INLINE bool is_nstring() const
  {
    return is_nvarchar2() || is_nchar();
  }
  OB_INLINE bool is_fixed_len_char_type() const
  {
    return is_char() || is_nchar();
  }
  OB_INLINE bool is_varying_len_char_type() const
  {
    return is_varchar() || is_nvarchar2();
  }
  OB_INLINE bool is_character_type() const
  {
    return is_nstring() || is_varchar_or_char();
  }
  OB_INLINE bool is_collation_free_compatible() const
  {
    return is_character_type() && is_cs_collation_free();
  }
  OB_INLINE bool is_numeric_type() const
  {
    return ob_is_numeric_type(get_type());
  }
  OB_INLINE bool is_integer_type() const
  {
    return ob_is_integer_type(get_type());
  }
  OB_INLINE bool is_string_type() const
  {
    return ob_is_string_tc(get_type()) || ob_is_text_tc(get_type());
  }
  OB_INLINE bool is_string_or_lob_locator_type() const
  {
    return ob_is_string_tc(get_type()) || ob_is_text_tc(get_type()) || is_lob_locator();
  }
  OB_INLINE bool is_temporal_type() const
  {
    return ob_is_temporal_type(get_type());
  }
  OB_INLINE bool is_unsigned_integer() const
  {
    return (static_cast<uint8_t>(ObUTinyIntType) <= type_ && static_cast<uint8_t>(ObUInt64Type) >= type_);
  }
  OB_INLINE bool is_enumset_inner_type() const
  {
    return static_cast<uint8_t>(ObEnumInnerType) == type_ || static_cast<uint8_t>(ObSetInnerType) == type_;
  }
  OB_INLINE bool is_otimestamp_type() const
  {
    return ObTimestampTZType <= get_type() && get_type() <= ObTimestampNanoType;
  }
  OB_INLINE bool is_oracle_decimal() const
  {
    return ObNumberType == type_ || ObFloatType == type_ || ObDoubleType == type_;
  }
  OB_INLINE bool is_urowid() const
  {
    return ObURowIDType == type_;
  }
  OB_INLINE bool is_blob_locator() const
  {
    return (ObLobType == type_ && CS_TYPE_BINARY == cs_type_);
  }
  OB_INLINE bool is_clob_locator() const
  {
    return (ObLobType == type_ && CS_TYPE_BINARY != cs_type_);
  }
  OB_INLINE bool is_lob_locator() const
  {
    return ObLobType == type_;
  }

  OB_INLINE bool is_interval_type() const
  {
    return is_interval_ds() || is_interval_ym();
  }
  OB_INLINE bool is_oracle_temporal_type() const
  {
    return is_datetime() || is_otimestamp_type() || is_interval_type();
  }

  OB_INLINE void set_collation_level(ObCollationLevel cs_level)
  {
    cs_level_ = cs_level;
  }
  OB_INLINE void set_collation_type(ObCollationType cs_type)
  {
    cs_type_ = cs_type;
  }
  OB_INLINE void set_default_collation_type()
  {
    set_collation_type(ObCharset::get_default_collation(ObCharset::get_default_charset()));
  }
  OB_INLINE ObCollationLevel get_collation_level() const
  {
    return static_cast<ObCollationLevel>(cs_level_);
  }
  OB_INLINE ObCollationType get_collation_type() const
  {
    return static_cast<ObCollationType>(cs_type_);
  }
  OB_INLINE ObCharsetType get_charset_type() const
  {
    return ObCharset::charset_type_by_coll(get_collation_type());
  }
  OB_INLINE bool is_collation_invalid() const
  {
    return CS_LEVEL_INVALID == cs_level_ && CS_TYPE_INVALID == cs_type_;
  }
  OB_INLINE void set_collation(const ObObjMeta& other)
  {
    cs_level_ = other.cs_level_;
    cs_type_ = other.cs_type_;
  }
  OB_INLINE void set_scale(const ObScale scale)
  {
    scale_ = static_cast<int8_t>(scale);
  }
  OB_INLINE ObScale get_scale() const
  {
    return static_cast<ObScale>(scale_);
  }
  OB_INLINE void set_extend_type(uint8_t type)
  {
    extend_type_ = type;
  }
  OB_INLINE uint8_t get_extend_type() const
  {
    return extend_type_;
  }

  TO_STRING_KV(N_TYPE, ob_obj_type_str(static_cast<ObObjType>(type_)), N_COLLATION,
      ObCharset::collation_name(get_collation_type()), N_COERCIBILITY,
      ObCharset::collation_level(get_collation_level()));
  NEED_SERIALIZE_AND_DESERIALIZE;

  static uint32_t type_offset_bits()
  {
    return offsetof(ObObjMeta, type_) * 8;
  }
  static uint32_t cs_level_offset_bits()
  {
    return offsetof(ObObjMeta, cs_level_) * 8;
  }
  static uint32_t cs_type_offset_bits()
  {
    return offsetof(ObObjMeta, cs_type_) * 8;
  }
  static uint32_t scale_offset_bits()
  {
    return offsetof(ObObjMeta, scale_) * 8;
  }

protected:
  uint8_t type_;
  uint8_t cs_level_;  // collation level
  uint8_t cs_type_;   // collation type
  union {
    int8_t scale_;  // scale, bit length for bit type.
    ObLobScale lob_scale_;
    uint8_t extend_type_;
  };
};

struct ObLogicMacroBlockId {
  static const int64_t LOGIC_BLOCK_ID_VERSION = 1;
  ObLogicMacroBlockId() : data_seq_(0), data_version_(0)
  {}
  ObLogicMacroBlockId(const int64_t data_seq, const uint64_t data_version)
      : data_seq_(data_seq), data_version_(data_version)
  {}
  int64_t hash() const;
  bool operator==(const ObLogicMacroBlockId& other) const;
  bool operator!=(const ObLogicMacroBlockId& other) const;
  OB_INLINE bool is_valid() const
  {
    return data_seq_ >= 0;
  }
  TO_STRING_KV(K_(data_seq), K_(data_version));
  int64_t data_seq_;
  uint64_t data_version_;
  OB_UNIS_VERSION(LOGIC_BLOCK_ID_VERSION);
};

struct ObLobIndex {
  static const int64_t LOB_INDEX_VERSION = 1;
  ObLobIndex() : version_(LOB_INDEX_VERSION), reserved_(0), logic_macro_id_(), byte_size_(0), char_size_(0)
  {}
  bool operator==(const ObLobIndex& other) const;
  bool operator!=(const ObLobIndex& other) const;
  TO_STRING_KV(K_(version), K_(reserved), K_(logic_macro_id), K_(byte_size), K_(char_size));
  uint32_t version_;
  uint32_t reserved_;
  ObLogicMacroBlockId logic_macro_id_;
  uint64_t byte_size_;
  uint64_t char_size_;
  OB_UNIS_VERSION(LOB_INDEX_VERSION);
};

struct ObLobData {
  static const int64_t DIRECT_CNT = 48;
  static const int64_t NDIRECT_CNT = 1;
  static const int64_t TOTAL_INDEX_CNT = DIRECT_CNT + NDIRECT_CNT;
  static const int64_t LOB_DATA_VERSION = 1;
  ObLobData() : version_(LOB_DATA_VERSION), idx_cnt_(0), byte_size_(0), char_size_(0)
  {}
  bool operator==(const ObLobData& other) const;
  bool operator!=(const ObLobData& other) const;
  int64_t get_serialize_size() const;
  int serialize(char* buf, const int64_t buf_len, int64_t& pos) const;
  int deserialize(const char* buf, const int64_t buf_len, int64_t& pos);
  TO_STRING_KV(K_(version), K_(byte_size), K_(char_size), K_(idx_cnt), "lob_idx_array",
      common::ObArrayWrap<ObLobIndex>(lob_idx_, idx_cnt_));
  int64_t get_direct_cnt() const
  {
    return DIRECT_CNT;
  }
  OB_INLINE int32_t get_handle_size() const
  {
    return static_cast<int32_t>(offsetof(ObLobData, lob_idx_) + sizeof(ObLobIndex) * idx_cnt_);
  }
  void reset();
  uint32_t version_;
  uint32_t idx_cnt_;
  uint64_t byte_size_;
  uint64_t char_size_;
  ObLobIndex lob_idx_[TOTAL_INDEX_CNT];
};

// We always get/convert/build locator from existing buffer
#define LOB_DEFAULT_FLAGS UINT16_C(0)
#define LOB_COMPAT_MODE_FLAG (INT64_C(1) << 0)  // 1 means old heap table without rowid, fake locator
#define LOB_OPEN_MODE_FLAG (INT64_C(1) << 1)    // 0 means lob_readwrite, 1 means lob_readonly
#define LOB_IS_OPEN_FLAG (INT64_C(1) << 2)      // 0 means is close, 1 means is open

struct ObLobLocator {
  static const uint32_t MAGIC_CODE = 0x4C4F4221;  // LOB!
  static const uint32_t LOB_LOCATOR_VERSION = 1;
  ObLobLocator() = delete;
  ~ObLobLocator() = delete;
  OB_INLINE bool is_valid() const
  {
    return magic_code_ == MAGIC_CODE && version_ == LOB_LOCATOR_VERSION && snapshot_version_ >= 0 &&
           is_valid_id(table_id_) && is_valid_id(column_id_) && option_ == 0 && data_ != nullptr;
  }
  OB_INLINE bool is_fake_locator() const
  {
    return !is_inline_mode();
  }
  int init(const uint64_t table_id, const uint32_t column_id, const int64_t snapshot_version, const uint16_t flags,
      const ObString& rowid, const ObString& payload);
  int init(const ObString& payload);  // init a lob locator with fake rowid/table_id and etc.
  int get_rowid(ObString& rowid) const;
  int get_payload(ObString& payload) const;
  OB_INLINE int64_t get_data_length() const
  {
    return (payload_offset_ + payload_size_);
  }
  OB_INLINE int64_t get_total_size() const
  {
    return offsetof(ObLobLocator, data_) + get_data_length();
  }
  OB_INLINE uint32_t get_payload_length() const
  {
    return payload_size_;
  }
  // TODO to be deleted
  OB_INLINE const char* get_payload_ptr() const
  {
    return &data_[payload_offset_];
  }
  OB_INLINE void add_flag(int64_t flag)
  {
    flags_ |= flag;
  }
  OB_INLINE void del_flag(int64_t flag)
  {
    flags_ &= ~flag;
  }
  OB_INLINE void set_inline_mode()
  {
    del_flag(LOB_COMPAT_MODE_FLAG);
  }
  OB_INLINE void set_compat_mode()
  {
    add_flag(LOB_COMPAT_MODE_FLAG);
  }
  OB_INLINE bool is_inline_mode() const
  {
    return !(flags_ & LOB_COMPAT_MODE_FLAG);
  }
  OB_INLINE void set_readwrite()
  {
    del_flag(LOB_OPEN_MODE_FLAG);
  }
  OB_INLINE void set_readonly()
  {
    add_flag(LOB_OPEN_MODE_FLAG);
  }
  OB_INLINE bool is_readwrite() const
  {
    return !(flags_ & LOB_OPEN_MODE_FLAG);
  }
  OB_INLINE void set_is_close()
  {
    del_flag(LOB_IS_OPEN_FLAG);
  }
  OB_INLINE void set_is_open()
  {
    add_flag(LOB_IS_OPEN_FLAG);
  }
  OB_INLINE bool is_open() const
  {
    return (flags_ & LOB_IS_OPEN_FLAG);
  }

  DECLARE_TO_STRING;

  uint32_t magic_code_;
  uint32_t version_;
  int64_t snapshot_version_;
  uint64_t table_id_;
  uint32_t column_id_;
  uint16_t flags_;
  uint16_t option_;          // storage option: compress/ encrypt / dedup
  uint32_t payload_offset_;  //  == rowid_size; payload = data_ + payload_offset_
  uint32_t payload_size_;
  char data_[0];  // rowid + varchar
};

struct ObObjPrintParams {
  ObObjPrintParams(const ObTimeZoneInfo* tz_info, ObCollationType cs_type)
      : tz_info_(tz_info), cs_type_(cs_type), print_flags_(0)
  {}
  ObObjPrintParams(const ObTimeZoneInfo* tz_info)
      : tz_info_(tz_info), cs_type_(CS_TYPE_UTF8MB4_GENERAL_CI), print_flags_(0)
  {}
  ObObjPrintParams() : tz_info_(NULL), cs_type_(CS_TYPE_UTF8MB4_GENERAL_CI), print_flags_(0)
  {}
  TO_STRING_KV(K_(tz_info), K_(cs_type));
  const ObTimeZoneInfo* tz_info_;
  ObCollationType cs_type_;
  union {
    uint32_t print_flags_;
    struct {
      uint32_t need_cast_expr_ : 1;
      uint32_t is_show_create_view_ : 1;
      uint32_t use_memcpy_ : 1;
      uint32_t skip_escape_ : 1;
      uint32_t reserved_ : 28;
    };
  };
};

// sizeof(ObObjValue)=8
union ObObjValue {
  int64_t int64_;
  uint64_t uint64_;

  float float_;
  double double_;

  const char* string_;

  uint32_t* nmb_digits_;

  int64_t datetime_;
  int32_t date_;
  int64_t time_;
  uint8_t year_;

  int64_t ext_;
  int64_t unknown_;
  const ObLobData* lob_;
  const ObLobLocator* lob_locator_;
  int64_t nmonth_;   // for interval year to month
  int64_t nsecond_;  // for interval day to second
};

class ObBatchChecksum;
class ObObj {
public:
  // min, max extend value
  static const int64_t MIN_OBJECT_VALUE = UINT64_MAX - 2;
  static const int64_t MAX_OBJECT_VALUE = UINT64_MAX - 1;
  // WARNING: used only in RootTable, other user should not use this
  // to represent a (min, max) range in Roottable impl, we need this
  static const char* MIN_OBJECT_VALUE_STR;
  static const char* MAX_OBJECT_VALUE_STR;
  static const char* NOP_VALUE_STR;

public:
  ObObj();
  ObObj(const ObObj& other);
  explicit ObObj(bool val);
  explicit ObObj(int32_t val);
  explicit ObObj(int64_t val);
  explicit ObObj(ObObjType type);
  inline void reset();
  // when in not strict sql mode, build default value refer to data type
  int build_not_strict_default_value();
  static ObObj make_min_obj();
  static ObObj make_max_obj();
  static ObObj make_nop_obj();

  OB_INLINE void copy_meta_type(const ObObjMeta& meta)
  {
    meta_.set_type_simple(meta.get_type());
    meta_.set_collation_type(meta.get_collation_type());
    if (ObCharType == get_type() || ObVarcharType == get_type() || ob_is_text_tc(get_type()) ||
        ob_is_lob_locator(get_type()) || ob_is_json(get_type()) ) {
      meta_.set_collation_level(ObCollationLevel::CS_LEVEL_IMPLICIT);
    } else {
      meta_.set_collation_level(meta.get_collation_level());
    }
  }

  OB_INLINE void copy_value_to(ObObj& obj, bool& has_null) const
  {
    switch (get_type()) {
      case ObNullType:
      case ObExtendType: {
        obj = *this;
        has_null = true;
        break;
      }
      case ObCharType:
      case ObVarcharType:
      case ObTinyTextType:
      case ObTextType:
      case ObMediumTextType:
      case ObLongTextType:
      case ObLobType:
      case ObJsonType:
      case ObRawType: {
        obj.meta_.set_collation_level(meta_.get_collation_level());
        obj.meta_.set_scale(meta_.get_scale());
        obj.val_len_ = val_len_;
        obj.v_ = v_;
        break;
      }
      default: {
        obj.meta_.set_scale(meta_.get_scale());
        obj.val_len_ = val_len_;
        obj.v_ = v_;
        break;
      }
    }
  }

  OB_INLINE void copy_value_or_obj(ObObj& obj, bool is_copy_all) const
  {
    if (is_copy_all) {
      obj = *this;
    } else {
      obj.meta_.set_scale(meta_.get_scale());
      obj.val_len_ = val_len_;
      obj.v_ = v_;
    }
  }
  //@{ setters
  OB_INLINE void set_type(const ObObjType& type)
  {
    if (OB_UNLIKELY(ObNullType > type || ObMaxType < type)) {
      COMMON_LOG(ERROR, "invalid type", K(type));
      meta_.set_type(ObUnknownType);
    } else {
      meta_.set_type(type);
    }
  }
  static int64_t get_otimestamp_store_size(const bool is_timestamp_tz)
  {
    return static_cast<int64_t>(sizeof(int64_t) + (is_timestamp_tz ? sizeof(uint32_t) : sizeof(uint16_t)));
  }
  template <typename T>
  void set_obj_value(const T& v);
  void set_collation_level(const ObCollationLevel& cs_level)
  {
    meta_.set_collation_level(cs_level);
  }
  void set_collation_type(const ObCollationType& cs_type)
  {
    meta_.set_collation_type(cs_type);
  }
  void set_default_collation_type()
  {
    meta_.set_default_collation_type();
  }
  void set_meta_type(const ObObjMeta& type)
  {
    meta_ = type;
  }
  void set_collation(const ObObjMeta& type)
  {
    meta_.set_collation(type);
  }
  void set_scale(ObScale scale)
  {
    meta_.set_scale(scale);
  }

  void set_int(const ObObjType type, const int64_t value);
  void set_tinyint(const int8_t value);
  void set_smallint(const int16_t value);
  void set_mediumint(const int32_t value);
  void set_int32(const int32_t value);
  void set_int(const int64_t value);  // aka bigint

  void set_tinyint_value(const int8_t value);
  void set_smallint_value(const int16_t value);
  void set_mediumint_value(const int32_t value);
  void set_int32_value(const int32_t value);
  void set_int_value(const int64_t value);  // aka bigint

  void set_uint(const ObObjType type, const uint64_t value);
  void set_utinyint(const uint8_t value);
  void set_utinyint_value(const uint8_t value);
  void set_usmallint(const uint16_t value);
  void set_usmallint_value(const uint16_t value);
  void set_umediumint(const uint32_t value);
  void set_umediumint_value(const uint32_t value);
  void set_uint32(const uint32_t value);
  void set_uint32_value(const uint32_t value);
  void set_uint64(const uint64_t value);
  void set_uint64_value(const uint64_t value);

  void set_float(const ObObjType type, const float value);
  void set_float(const float value);
  void set_float_value(const float value);
  void set_ufloat(const float value);
  void set_ufloat_value(const float value);

  void set_double(const ObObjType type, const double value);
  void set_double(const double value);
  void set_double_value(const double value);
  void set_udouble(const double value);
  void set_udouble_value(const double value);

  void set_number(const ObObjType type, const number::ObNumber& num);
  void set_number(const ObObjType type, const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits);
  void set_number(const number::ObNumber& num);
  void set_number_value(const number::ObNumber& num);
  void set_number_value(const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits);
  void set_number(const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits);

  void set_unumber(const number::ObNumber& num);
  void set_unumber(const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits);
  void set_unumber_value(const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits);

  void set_number_float(const number::ObNumber& num);
  void set_number_float(const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits);
  void set_number_float_value(const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits);

  void set_datetime(const ObObjType type, const int64_t value);
  void set_datetime(const int64_t value);
  void set_timestamp(const int64_t value);
  void set_date(const int32_t value);
  void set_time(const int64_t value);
  void set_year(const uint8_t value);

  void set_datetime_value(const int64_t value);
  void set_timestamp_value(const int64_t value);
  void set_date_value(const int32_t value);
  void set_time_value(const int64_t value);
  void set_year_value(const uint8_t value);

  // only set v_.string_ and length
  void set_common_value(const ObString& value);

  void set_string(const ObObjType type, const char* ptr, const ObString::obstr_size_t size);
  void set_string(const ObObjType type, const ObString& value);
  void set_varchar(const ObString& value);
  void set_varchar(const char* ptr, const ObString::obstr_size_t size);
  void set_varchar_value(const char* ptr, const ObString::obstr_size_t size);
  void set_varchar(const char* cstr);
  void set_char(const ObString& value);
  void set_char_value(const char* ptr, const ObString::obstr_size_t size);
  void set_varbinary(const ObString& value);
  void set_binary(const ObString& value);
  void set_raw(const ObString& value);
  void set_raw(const char* ptr, const ObString::obstr_size_t size);
  void set_raw_value(const char* ptr, const ObString::obstr_size_t size);
  void set_hex_string(const ObString& value);
  void set_hex_string_value(const ObString& value);
  void set_hex_string_value(const char* ptr, const ObString::obstr_size_t size);
  void set_enum(const uint64_t value);
  void set_enum_value(const uint64_t value);
  void set_set(const uint64_t value);
  void set_set_value(const uint64_t value);
  void set_enum_inner(const ObString& value);
  void set_enum_inner(const char* ptr, const ObString::obstr_size_t size);
  void set_set_inner(const ObString& value);
  void set_set_inner(const char* ptr, const ObString::obstr_size_t size);
  void set_lob_value(const ObObjType type, const ObLobData* value, const int32_t length);
  void set_lob_value(const ObObjType type, const char* ptr, const int32_t length);
  void set_json_value(const ObObjType type, const ObLobData *value, const int32_t length);
  void set_json_value(const ObObjType type, const char *ptr, const int32_t length);
  void set_lob_locator(const ObLobLocator& value);
  void set_lob_locator(const ObObjType type, const ObLobLocator& value);
  inline void set_lob_inrow()
  {
    meta_.set_lob_inrow();
  }
  inline void set_lob_outrow()
  {
    meta_.set_lob_outrow();
  }
  void set_otimestamp_value(const ObObjType type, const ObOTimestampData& value);
  void set_otimestamp_value(const ObObjType type, const int64_t time_us, const uint32_t time_ctx_desc);
  void set_otimestamp_value(const ObObjType type, const int64_t time_us, const uint16_t time_desc);
  void set_otimestamp_null(const ObObjType type);

  void set_timestamp_tz(const int64_t time_us, const uint32_t time_ctx_desc)
  {
    set_otimestamp_value(ObTimestampTZType, time_us, time_ctx_desc);
  }
  void set_timestamp_ltz(const int64_t time_us, const uint16_t time_desc)
  {
    set_otimestamp_value(ObTimestampLTZType, time_us, time_desc);
  }
  void set_timestamp_nano(const int64_t time_us, const uint16_t time_desc)
  {
    set_otimestamp_value(ObTimestampNanoType, time_us, time_desc);
  }
  void set_timestamp_tz(const ObOTimestampData& value)
  {
    set_otimestamp_value(ObTimestampTZType, value);
  }
  void set_timestamp_ltz(const ObOTimestampData& value)
  {
    set_otimestamp_value(ObTimestampLTZType, value);
  }
  void set_timestamp_nano(const ObOTimestampData& value)
  {
    set_otimestamp_value(ObTimestampNanoType, value);
  }

  inline void set_bool(const bool value);
  inline void set_ext(const int64_t value);
  inline void set_extend(const int64_t value, uint8 extend_type, int32_t size = 0);
  inline void set_unknown(const int64_t value);

  inline void set_bit(const uint64_t value);
  inline void set_bit_value(const uint64_t value);

  inline void set_null();
  inline void set_min_value();
  inline void set_max_value();
  inline void set_nop_value();

  inline void set_lob(const char* ptr, const int32_t size, const ObLobScale& lob_scale);

  void set_val_len(const int32_t val_len);
  void set_null_meta(const ObObjMeta meta);

  void set_interval_ym(const ObIntervalYMValue& value);
  void set_interval_ds(const ObIntervalDSValue& value);
  void set_interval_ym(const int64_t value)
  {
    set_interval_ym(ObIntervalYMValue(value));
  }
  void set_nvarchar2(const ObString& value);
  void set_nvarchar2_value(const char* ptr, const ObString::obstr_size_t size);
  void set_nchar(const ObString& value);
  void set_nchar_value(const char* ptr, const ObString::obstr_size_t size);

  void set_urowid(const ObURowIDData& urowid)
  {
    meta_.set_urowid();
    v_.string_ = (const char*)urowid.rowid_content_;
    val_len_ = urowid.rowid_len_;
  }
  void set_urowid(const char* ptr, const int64_t size)
  {
    meta_.set_urowid();
    v_.string_ = ptr;
    val_len_ = size;
  }
  //@}

  //@{ getters
  OB_INLINE ObObjType get_type() const
  {
    return meta_.get_type();
  }
  OB_INLINE ObObjTypeClass get_type_class() const
  {
    return meta_.get_type_class();
  }
  OB_INLINE ObCollationLevel get_collation_level() const
  {
    return meta_.get_collation_level();
  }
  OB_INLINE ObCollationType get_collation_type() const
  {
    return meta_.get_collation_type();
  }
  OB_INLINE ObScale get_scale() const
  {
    return meta_.get_scale();
  }
  inline const ObObjMeta& get_meta() const
  {
    return meta_;
  }
  inline const ObObjMeta& get_null_meta() const
  {
    return null_meta_;
  }

  inline int get_tinyint(int8_t& value) const;
  inline int get_smallint(int16_t& value) const;
  inline int get_mediumint(int32_t& value) const;
  inline int get_int32(int32_t& value) const;
  inline int get_int(int64_t& value) const;

  inline int get_utinyint(uint8_t& value) const;
  inline int get_usmallint(uint16_t& value) const;
  inline int get_umediumint(uint32_t& value) const;
  inline int get_uint32(uint32_t& value) const;
  inline int get_uint64(uint64_t& value) const;

  inline int get_float(float& value) const;
  inline int get_double(double& value) const;
  inline int get_ufloat(float& value) const;
  inline int get_udouble(double& value) const;

  inline int get_number(number::ObNumber& num) const;
  inline int get_unumber(number::ObNumber& num) const;
  inline int get_number_float(number::ObNumber& num) const;

  inline int get_datetime(int64_t& value) const;
  inline int get_timestamp(int64_t& value) const;
  inline int get_date(int32_t& value) const;
  inline int get_time(int64_t& value) const;
  inline int get_year(uint8_t& value) const;

  inline int get_string(ObString& value) const;
  inline int get_varchar(ObString& value) const;
  inline int get_char(ObString& value) const;
  inline int get_nvarchar2(ObString& value) const;
  inline int get_nchar(ObString& value) const;
  inline int get_varbinary(ObString& value) const;
  inline int get_raw(ObString& value) const;
  inline int get_binary(ObString& value) const;
  inline int get_hex_string(ObString& value) const;
  inline int get_print_string(ObString& value) const;

  inline int get_bool(bool& value) const;
  inline int get_ext(int64_t& value) const;
  inline int get_unknown(int64_t& value) const;
  inline int get_bit(uint64_t& value) const;
  inline int get_enum(uint64_t& value) const;
  inline int get_set(uint64_t& value) const;
  int get_enum_str_val(ObSqlString& str_val, const ObIArray<ObString>& type_infos) const;
  int get_set_str_val(ObSqlString& str_val, const ObIArray<ObString>& type_infos) const;
  inline int32_t get_val_len() const
  {
    return val_len_;
  }
  inline int get_enumset_inner_value(ObEnumSetInnerValue& inner_value) const;

  int get_interval_ym(ObIntervalYMValue& value) const;
  int get_interval_ds(ObIntervalDSValue& value) const;

  int get_urowid(ObURowIDData& urowid_data) const;

  /// the follow getters do not check type, use them when you already known the type
  OB_INLINE int8_t get_tinyint() const
  {
    return static_cast<int8_t>(v_.int64_);
  }
  OB_INLINE int16_t get_smallint() const
  {
    return static_cast<int16_t>(v_.int64_);
  }
  OB_INLINE int32_t get_mediumint() const
  {
    return static_cast<int32_t>(v_.int64_);
  }
  OB_INLINE int32_t get_int32() const
  {
    return static_cast<int32_t>(v_.int64_);
  }
  OB_INLINE int64_t get_int() const
  {
    return static_cast<int64_t>(v_.int64_);
  }

  OB_INLINE uint8_t get_utinyint() const
  {
    return static_cast<uint8_t>(v_.uint64_);
  }
  OB_INLINE uint16_t get_usmallint() const
  {
    return static_cast<uint16_t>(v_.uint64_);
  }
  OB_INLINE uint32_t get_umediumint() const
  {
    return static_cast<uint32_t>(v_.uint64_);
  }
  OB_INLINE uint32_t get_uint32() const
  {
    return static_cast<uint32_t>(v_.uint64_);
  }
  OB_INLINE uint64_t get_uint64() const
  {
    return static_cast<uint64_t>(v_.uint64_);
  }

  OB_INLINE float get_float() const
  {
    return v_.float_;
  }
  OB_INLINE double get_double() const
  {
    return v_.double_;
  }
  OB_INLINE float get_ufloat() const
  {
    return v_.float_;
  }
  OB_INLINE double get_udouble() const
  {
    return v_.double_;
  }

  OB_INLINE bool is_negative_number() const
  {
    return number::ObNumber::is_negative_number(nmb_desc_);
  }
  OB_INLINE bool is_zero_number() const
  {
    return number::ObNumber::is_zero_number(nmb_desc_);
  }
  OB_INLINE int64_t get_number_digit_length() const
  {
    return nmb_desc_.len_;
  }
  OB_INLINE int64_t get_number_byte_length() const
  {
    return nmb_desc_.len_ * sizeof(uint32_t);
  }
  OB_INLINE number::ObNumber get_number() const
  {
    return number::ObNumber(nmb_desc_.desc_, v_.nmb_digits_);
  }
  OB_INLINE number::ObNumber get_unumber() const
  {
    return number::ObNumber(nmb_desc_.desc_, v_.nmb_digits_);
  }
  OB_INLINE number::ObNumber get_number_float() const
  {
    return number::ObNumber(nmb_desc_.desc_, v_.nmb_digits_);
  }

  OB_INLINE int64_t get_datetime() const
  {
    return v_.datetime_;
  }
  OB_INLINE int64_t get_timestamp() const
  {
    return v_.datetime_;
  }
  OB_INLINE int32_t get_date() const
  {
    return v_.date_;
  }
  OB_INLINE int64_t get_time() const
  {
    return v_.time_;
  }
  OB_INLINE uint8_t get_year() const
  {
    return v_.year_;
  }

  OB_INLINE ObString get_string() const
  {
    return ObString(val_len_, v_.string_);
  }
  OB_INLINE ObString get_varchar() const
  {
    return ObString(val_len_, v_.string_);
  }
  OB_INLINE ObString get_char() const
  {
    return ObString(val_len_, v_.string_);
  }
  OB_INLINE ObString get_varbinary() const
  {
    return ObString(val_len_, v_.string_);
  }
  OB_INLINE ObString get_raw() const
  {
    return ObString(val_len_, v_.string_);
  }
  OB_INLINE ObString get_binary() const
  {
    return ObString(val_len_, v_.string_);
  }
  OB_INLINE ObString get_hex_string() const
  {
    return ObString(val_len_, v_.string_);
  }
  OB_INLINE ObString get_print_string(const int64_t max_len) const
  {
    return ObString(MIN(val_len_, max_len), v_.string_);
  }
  OB_INLINE ObString get_lob_print_string(const int64_t max_len) const
  {
    return ObString(MIN(v_.lob_locator_->payload_size_, max_len), v_.lob_locator_->get_payload_ptr());
  }

  OB_INLINE bool get_bool() const
  {
    return (0 != v_.int64_);
  }
  inline int64_t get_ext() const;
  OB_INLINE int64_t get_unknown() const
  {
    return v_.unknown_;
  }
  OB_INLINE uint64_t get_bit() const
  {
    return v_.uint64_;
  }
  OB_INLINE uint64_t get_enum() const
  {
    return v_.uint64_;
  }
  OB_INLINE uint64_t get_set() const
  {
    return v_.uint64_;
  }
  OB_INLINE ObString get_set_inner() const
  {
    return ObString(val_len_, v_.string_);
  }
  OB_INLINE ObString get_enum_inner() const
  {
    return ObString(val_len_, v_.string_);
  }

  inline const number::ObNumber::Desc& get_number_desc() const
  {
    return nmb_desc_;
  }
  inline const uint32_t* get_number_digits() const
  {
    return v_.nmb_digits_;
  }

  inline const char* get_string_ptr() const
  {
    return v_.string_;
  }
  inline int32_t get_string_len() const
  {
    return val_len_;
  }
  inline const ObLobData* get_lob_value() const
  {
    return v_.lob_;
  }
  inline int get_lob_value(const ObLobData*& lob) const;

  inline int get_lob_locator(ObLobLocator*& lob_locator) const;
  inline const ObLobLocator* get_lob_locator() const
  {
    return v_.lob_locator_;
  }
  // TODO dangerous interface
  inline uint32_t get_lob_payload_size() const
  {
    return v_.lob_locator_->payload_size_;
  }
  inline const char* get_lob_payload_ptr() const
  {
    return v_.lob_locator_ == nullptr ? nullptr : v_.lob_locator_->get_payload_ptr();
  }

  inline ObOTimestampData::UnionTZCtx get_tz_desc() const
  {
    return time_ctx_;
  }
  inline ObOTimestampData get_otimestamp_value() const
  {
    return ObOTimestampData(v_.datetime_, time_ctx_);
  }
  inline int64_t get_otimestamp_store_size() const
  {
    return get_otimestamp_store_size(is_timestamp_tz());
  }
  inline int write_otimestamp(char* buf, const int64_t len, int64_t& pos) const;
  inline int read_otimestamp(const char* buf, const int64_t len);

  inline int64_t get_interval_store_size() const;
  inline int write_interval(char* buf) const;
  inline int read_interval(const char* buf);

  inline ObIntervalYMValue get_interval_ym() const
  {
    return ObIntervalYMValue(v_.nmonth_);
  }
  inline ObIntervalDSValue get_interval_ds() const
  {
    return ObIntervalDSValue(v_.nsecond_, interval_fractional_);
  }

  inline ObString get_nvarchar2() const
  {
    return ObString(val_len_, v_.string_);
  }
  inline ObString get_nchar() const
  {
    return ObString(val_len_, v_.string_);
  }

  inline ObURowIDData get_urowid() const
  {
    return ObURowIDData(val_len_, (const uint8_t*)v_.string_);
  }

  //@}

  //@{ test functions
  OB_INLINE bool is_valid_type() const
  {
    return meta_.is_valid();
  }
  OB_INLINE bool is_invalid_type() const
  {
    return meta_.is_invalid();
  }

  OB_INLINE bool is_null() const
  {
    return meta_.is_null();
  }
  OB_INLINE bool is_null_oracle() const
  {
    return meta_.is_null() || (meta_.is_character_type() && (0 == get_string_len()));
  }
  OB_INLINE bool is_tinyint() const
  {
    return meta_.is_tinyint();
  }
  OB_INLINE bool is_smallint() const
  {
    return meta_.is_smallint();
  }
  OB_INLINE bool is_mediumint() const
  {
    return meta_.is_mediumint();
  }
  OB_INLINE bool is_int32() const
  {
    return meta_.is_int32();
  }
  OB_INLINE bool is_int() const
  {
    return meta_.is_int();
  }
  OB_INLINE bool is_utinyint() const
  {
    return meta_.is_utinyint();
  }
  OB_INLINE bool is_usmallint() const
  {
    return meta_.is_usmallint();
  }
  OB_INLINE bool is_umediumint() const
  {
    return meta_.is_umediumint();
  }
  OB_INLINE bool is_uint32() const
  {
    return meta_.is_uint32();
  }
  OB_INLINE bool is_uint64() const
  {
    return meta_.is_uint64();
  }
  OB_INLINE bool is_float() const
  {
    return meta_.is_float();
  }
  OB_INLINE bool is_double() const
  {
    return meta_.is_double();
  }
  OB_INLINE bool is_ufloat() const
  {
    return meta_.is_ufloat();
  }
  OB_INLINE bool is_udouble() const
  {
    return meta_.is_udouble();
  }
  OB_INLINE bool is_number() const
  {
    return meta_.is_number();
  }
  OB_INLINE bool is_unumber() const
  {
    return meta_.is_unumber();
  }
  OB_INLINE bool is_number_float() const
  {
    return meta_.is_number_float();
  }
  OB_INLINE bool is_oracle_decimal() const
  {
    return meta_.is_oracle_decimal();
  }
  OB_INLINE bool is_datetime() const
  {
    return meta_.is_datetime();
  }
  OB_INLINE bool is_timestamp() const
  {
    return meta_.is_timestamp();
  }
  OB_INLINE bool is_otimestamp_type() const
  {
    return meta_.is_otimestamp_type();
  }
  OB_INLINE bool is_year() const
  {
    return meta_.is_year();
  }
  OB_INLINE bool is_date() const
  {
    return meta_.is_date();
  }
  OB_INLINE bool is_time() const
  {
    return meta_.is_time();
  }
  OB_INLINE bool is_varchar() const
  {
    return meta_.is_varchar();
  }
  OB_INLINE bool is_char() const
  {
    return meta_.is_char();
  }
  OB_INLINE bool is_varbinary() const
  {
    return meta_.is_varbinary();
  }
  OB_INLINE bool is_raw() const
  {
    return meta_.is_raw();
  }
  OB_INLINE bool is_binary() const
  {
    return meta_.is_binary();
  }
  OB_INLINE bool is_hex_string() const
  {
    return meta_.is_hex_string();
  }
  OB_INLINE bool is_ext() const
  {
    return meta_.is_ext();
  }
  OB_INLINE bool is_unknown() const
  {
    return meta_.is_unknown();
  }
  OB_INLINE bool is_bit() const
  {
    return meta_.is_bit();
  }
  OB_INLINE bool is_enum() const
  {
    return meta_.is_enum();
  }
  OB_INLINE bool is_set() const
  {
    return meta_.is_set();
  }
  OB_INLINE bool is_text() const
  {
    return meta_.is_text();
  }
  OB_INLINE bool is_clob() const
  {
    return meta_.is_clob();
  }
  // OB_INLINE bool is_oracle_clob() const { return meta_.is_oracle_clob(); }
  OB_INLINE bool is_blob() const
  {
    return meta_.is_blob();
  }
  // OB_INLINE bool is_oracle_blob() const { return meta_.is_oracle_blob(); }
  OB_INLINE bool is_lob() const
  {
    return meta_.is_lob();
  }
  OB_INLINE bool is_lob_inrow() const
  {
    return meta_.is_lob_inrow();
  }
  OB_INLINE bool is_lob_outrow() const
  {
    return meta_.is_lob_outrow();
  }
  OB_INLINE bool is_json() const 
  { 
    return meta_.is_json(); 
  }
  OB_INLINE bool is_json_inrow() const 
  { 
    return meta_.is_json_inrow(); 
  }
  OB_INLINE bool is_json_outrow() const 
  { 
    return meta_.is_json_outrow(); 
  }
  OB_INLINE bool is_timestamp_tz() const
  {
    return meta_.is_timestamp_tz();
  }
  OB_INLINE bool is_timestamp_ltz() const
  {
    return meta_.is_timestamp_ltz();
  }
  OB_INLINE bool is_timestamp_nano() const
  {
    return meta_.is_timestamp_nano();
  }
  OB_INLINE bool is_interval_ym() const
  {
    return meta_.is_interval_ym();
  }
  OB_INLINE bool is_interval_ds() const
  {
    return meta_.is_interval_ds();
  }

  OB_INLINE bool is_unsigned_integer() const
  {
    return meta_.is_unsigned_integer();
  }
  OB_INLINE bool is_integer_type() const
  {
    return meta_.is_integer_type();
  }
  OB_INLINE bool is_numeric_type() const
  {
    return meta_.is_numeric_type();
  }
  OB_INLINE bool is_string_type() const
  {
    return meta_.is_string_type();
  }
  OB_INLINE bool is_temporal_type() const
  {
    return meta_.is_temporal_type();
  }
  OB_INLINE bool is_varchar_or_char() const
  {
    return meta_.is_varchar_or_char();
  }
  OB_INLINE bool is_varbinary_or_binary() const
  {
    return meta_.is_varbinary_or_binary();
  }
  OB_INLINE bool is_nvarchar2() const
  {
    return meta_.is_nvarchar2();
  }
  OB_INLINE bool is_nchar() const
  {
    return meta_.is_nchar();
  }
  OB_INLINE bool is_nstring() const
  {
    return meta_.is_nstring();
  }
  OB_INLINE bool is_fixed_len_char_type() const
  {
    return meta_.is_fixed_len_char_type();
  }
  OB_INLINE bool is_varying_len_char_type() const
  {
    return meta_.is_varying_len_char_type();
  }
  OB_INLINE bool is_character_type() const
  {
    return meta_.is_character_type();
  }
  OB_INLINE bool is_collation_free_compatible() const
  {
    return meta_.is_collation_free_compatible();
  }

  OB_INLINE bool is_urowid() const
  {
    return meta_.is_urowid();
  }
  OB_INLINE bool is_blob_locator() const
  {
    return meta_.is_blob_locator();
  }
  OB_INLINE bool is_clob_locator() const
  {
    return meta_.is_clob_locator();
  }
  OB_INLINE bool is_lob_locator() const
  {
    return meta_.is_lob_locator();
  }
  OB_INLINE bool is_string_or_lob_locator_type() const
  {
    return meta_.is_string_or_lob_locator_type();
  }
  OB_INLINE bool is_pl_extend() const
  {
    return is_ext() && 0 != meta_.get_extend_type();
  }

  inline bool is_min_value() const;
  inline bool is_max_value() const;
  inline bool is_nop_value() const;
  inline bool is_true() const;
  inline bool is_false() const;

  bool is_zero() const;
  //@}

  /// apply mutation to this obj
  int apply(const ObObj& mutation);

  //@{ comparison
  //
  // ATTENTION:
  //
  // When < > <= >= == != compare is_equal is called,
  // that_obj MUST have same type with this obj (*this)
  // or can_compare.
  // For Sql, to get diff type comparing result(varchar '123' compare with int 123),
  // call static function ObExprEqual::calc or other ObExprXX::calc.
  bool operator<(const ObObj& that_obj) const;
  bool operator>(const ObObj& that_obj) const;
  bool operator<=(const ObObj& that_obj) const;
  bool operator>=(const ObObj& that_obj) const;
  bool operator==(const ObObj& that_obj) const;
  bool operator!=(const ObObj& that_obj) const;
  bool can_compare(const ObObj& other) const;
  inline bool strict_equal(const ObObj& other) const;
  int check_collation_free_and_compare(const ObObj& other, int& cmp) const;
  int compare(const ObObj& other, int& cmp) const;
  int compare(const ObObj& other) const;
  int compare(const ObObj& other, ObCollationType cs_type, int& cmp) const;
  int compare(const ObObj& other, ObCollationType cs_type) const;
  int compare(const ObObj& other, common::ObCompareCtx& cmp_ctx, int& cmp) const;
  int compare(const ObObj& other, common::ObCompareCtx& cmp_ctx) const;
  int compare(const ObObj& other, ObCollationType cs_type, const ObCmpNullPos null_pos) const;
  int equal(const ObObj& other, bool& is_equal) const;
  bool is_equal(const ObObj& other) const;
  int equal(const ObObj& other, ObCollationType cs_type, bool& is_equal) const;
  bool is_equal(const ObObj& other, ObCollationType cs_type) const;
  //@}

  //@{ print utilities
  /// print as JSON style
  int64_t to_string(char* buffer, const int64_t length, const ObObjPrintParams& params = ObObjPrintParams()) const;
  /// print as SQL literal style, e.g. used to show column default value
  int print_sql_literal(
      char* buffer, int64_t length, int64_t& pos, const ObObjPrintParams& params = ObObjPrintParams()) const;
  /// print as SQL VARCHAR literal
  int print_varchar_literal(
      char* buffer, int64_t length, int64_t& pos, const ObObjPrintParams& params = ObObjPrintParams()) const;
  // used for enum and set
  int print_varchar_literal(const ObIArray<ObString>& type_infos, char* buffer, int64_t length, int64_t& pos) const;
  /// print as plain string
  int print_plain_str_literal(
      char* buffer, int64_t length, int64_t& pos, const ObObjPrintParams& params = ObObjPrintParams()) const;
  // used for enum and set
  int print_plain_str_literal(const ObIArray<ObString>& type_infos, char* buffer, int64_t length, int64_t& pos) const;

  void print_range_value(char* buffer, int64_t length, int64_t& pos) const;
  void print_str_with_repeat(char* buffer, int64_t length, int64_t& pos) const;

  // print_smart and print_format are for log_tool use
  int print_smart(char* buffer, int64_t length, int64_t& pos) const;
  int print_format(char* buffer, int64_t length, int64_t& pos) const;
  /// dump into log
  void dump(const int32_t log_level = OB_LOG_LEVEL_DEBUG) const;
  //@}

  //@{  deep copy
  bool need_deep_copy() const;
  OB_INLINE int64_t get_deep_copy_size() const;
  int deep_copy(const ObObj &src, char *buf, const int64_t size, int64_t &pos);
  void* get_deep_copy_obj_ptr();
  void set_data_ptr(void *data_ptr);
  const void *get_data_ptr() const;
  //return byte length
  int64_t get_data_length() const;

  template <typename Allocator>
  int to_collation_free_obj(ObObj& dst, bool& is_valid_collation_free, Allocator& allocator);
  //@}

  //@{ checksum
  // CRC64
  int64_t checksum(const int64_t current) const;
  int64_t checksum_v2(const int64_t current) const;
  void checksum(ObBatchChecksum& bc) const;
  // mysql hash for string, murmurhash for others
  uint64_t hash(uint64_t seed = 0) const;
  uint64_t hash_v1(uint64_t seed = 0) const;  // for compatible purpose, use hash() instead
  uint64_t hash_murmur(uint64_t seed = 0) const;
  // wyhash for all types
  uint64_t hash_wy(uint64_t seed = 0) const;
  // xx hash
  uint64_t hash_xx(uint64_t seed = 0) const;
  // mysql hash
  uint64_t varchar_hash(ObCollationType cs_type, uint64_t seed = 0) const;
  uint64_t varchar_murmur_hash(ObCollationType cs_type, uint64_t seed = 0) const;
  uint64_t varchar_wy_hash(ObCollationType cs_type, uint64_t seed = 0) const;
  uint64_t varchar_xx_hash(ObCollationType cs_type, uint64_t seed = 0) const;
  bool check_collation_integrity() const;
  //@}

  NEED_SERIALIZE_AND_DESERIALIZE;

  static uint32_t meta_offset_bits()
  {
    return offsetof(ObObj, meta_) * 8;
  }
  static uint32_t val_len_offset_bits()
  {
    return offsetof(ObObj, val_len_) * 8;
  }
  static uint32_t nmb_desc_offset_bits()
  {
    return offsetof(ObObj, nmb_desc_) * 8;
  }
  static uint32_t v_offset_bits()
  {
    return offsetof(ObObj, v_) * 8;
  }
  int get_char_length(const ObAccuracy accuracy, int32_t& char_len, bool is_oracle_mode) const;
  int convert_string_value_charset(ObCharsetType charset_type, ObIAllocator& allocator);

private:
  friend class tests::common::ObjTest;
  friend class ObCompactCellWriter;
  friend class ObCompactCellIterator;

public:
  ObObjMeta meta_;  // sizeof = 4
  union {
    int32_t val_len_;
    int32_t interval_fractional_;  // values for intervalds type
    number::ObNumber::Desc nmb_desc_;
    ObOTimestampData::UnionTZCtx time_ctx_;
    ObObjMeta null_meta_;
  };              // sizeof = 4
  ObObjValue v_;  // sizeof = 8
};

struct ObjHashBase {
  static const bool is_varchar_hash = true;
};

// default hash method: same with ObObj::hash())
//  murmurhash for non string types.
//  mysql string hash for string types.
struct ObDefaultHash : public ObjHashBase {
  static const bool is_varchar_hash = false;
  static uint64_t hash(const void* data, uint64_t len, uint64_t seed)
  {
    return murmurhash64A(data, static_cast<int32_t>(len), seed);
  }
};

struct ObMurmurHash : public ObjHashBase {
  static uint64_t hash(const void* data, uint64_t len, uint64_t seed)
  {
    return murmurhash64A(data, static_cast<int32_t>(len), seed);
  }
};

struct ObWyHash : public ObjHashBase {
  static uint64_t hash(const void* data, uint64_t len, uint64_t seed)
  {
    return wyhash(data, len, seed);
  }
};

struct ObXxHash : public ObjHashBase {
  static uint64_t hash(const void* data, uint64_t len, uint64_t seed)
  {
    return XXH64(data, static_cast<size_t>(len), seed);
  }
};

template <ObObjType type, typename T, typename P>
struct ObjHashCalculator {
  static uint64_t calc_hash_value(const P& param, const uint64_t hash)
  {
    UNUSED(param);
    UNUSED(hash);
    return 0;
  }
};

inline ObObj::ObObj()
{
  reset();
}

inline ObObj::ObObj(bool val)
{
  set_bool(val);
}

inline ObObj::ObObj(int32_t val)
{
  set_int32(val);
}

inline ObObj::ObObj(int64_t val)
{
  set_int(val);
}

inline ObObj::ObObj(ObObjType type)
{
  meta_.set_type(type);
}

inline ObObj::ObObj(const ObObj& other)
{
  *this = other;
}

inline void ObObj::reset()
{
  meta_.set_null();
  meta_.set_collation_type(CS_TYPE_INVALID);
  meta_.set_collation_level(CS_LEVEL_INVALID);
  val_len_ = 0;
  v_.int64_ = 0;
}

inline ObObj ObObj::make_min_obj()
{
  ObObj obj;
  obj.set_min_value();
  return obj;
}

inline ObObj ObObj::make_max_obj()
{
  ObObj obj;
  obj.set_max_value();
  return obj;
}

inline ObObj ObObj::make_nop_obj()
{
  ObObj obj;
  obj.set_nop_value();
  return obj;
}

inline void ObObj::set_int(const ObObjType type, const int64_t value)
{
  meta_.set_type(type);
  meta_.set_collation_level(CS_LEVEL_NUMERIC);
  v_.int64_ = value;
}

inline void ObObj::set_tinyint(const int8_t value)
{
  meta_.set_tinyint();
  v_.int64_ = static_cast<int64_t>(value);
}

inline void ObObj::set_tinyint_value(const int8_t value)
{
  //  meta_.set_tinyint();
  v_.int64_ = static_cast<int64_t>(value);
}

inline void ObObj::set_smallint(const int16_t value)
{
  meta_.set_smallint();
  v_.int64_ = static_cast<int64_t>(value);
}

inline void ObObj::set_smallint_value(const int16_t value)
{
  v_.int64_ = static_cast<int64_t>(value);
}

inline void ObObj::set_mediumint(const int32_t value)
{
  meta_.set_mediumint();
  v_.int64_ = static_cast<int64_t>(value);
}

inline void ObObj::set_mediumint_value(const int32_t value)
{
  v_.int64_ = static_cast<int64_t>(value);
}

inline void ObObj::set_int32(const int32_t value)
{
  meta_.set_int32();
  v_.int64_ = static_cast<int64_t>(value);
}

inline void ObObj::set_int32_value(const int32_t value)
{
  //  meta_.set_int32();
  v_.int64_ = static_cast<int64_t>(value);
}

inline void ObObj::set_int(const int64_t value)
{
  meta_.set_int();
  v_.int64_ = value;
}

inline void ObObj::set_int_value(const int64_t value)
{
  v_.int64_ = value;
}

inline void ObObj::set_uint(const ObObjType type, const uint64_t value)
{
  meta_.set_type(type);
  meta_.set_collation_level(CS_LEVEL_NUMERIC);
  v_.uint64_ = value;
}

inline void ObObj::set_utinyint(const uint8_t value)
{
  meta_.set_utinyint();
  v_.uint64_ = static_cast<uint64_t>(value);
}

inline void ObObj::set_utinyint_value(const uint8_t value)
{
  v_.uint64_ = static_cast<uint64_t>(value);
}

inline void ObObj::set_usmallint(const uint16_t value)
{
  meta_.set_usmallint();
  v_.uint64_ = static_cast<uint64_t>(value);
}

inline void ObObj::set_usmallint_value(const uint16_t value)
{
  v_.uint64_ = static_cast<uint64_t>(value);
}

inline void ObObj::set_umediumint(const uint32_t value)
{
  meta_.set_umediumint();
  v_.uint64_ = static_cast<uint64_t>(value);
}

inline void ObObj::set_umediumint_value(const uint32_t value)
{
  v_.uint64_ = static_cast<uint64_t>(value);
}

inline void ObObj::set_uint32(const uint32_t value)
{
  meta_.set_uint32();
  v_.uint64_ = static_cast<uint64_t>(value);
}

inline void ObObj::set_uint32_value(const uint32_t value)
{
  v_.uint64_ = static_cast<uint64_t>(value);
}

inline void ObObj::set_uint64(const uint64_t value)
{
  meta_.set_uint64();
  v_.uint64_ = value;
}

inline void ObObj::set_uint64_value(const uint64_t value)
{
  v_.uint64_ = value;
}

inline void ObObj::set_float(const ObObjType type, const float value)
{
  meta_.set_type(type);
  meta_.set_collation_level(CS_LEVEL_NUMERIC);
  v_.uint64_ = 0;
  v_.float_ = value;
}

inline void ObObj::set_float(const float value)
{
  meta_.set_float();
  v_.uint64_ = 0;
  v_.float_ = value;
}

inline void ObObj::set_float_value(const float value)
{
  //  meta_.set_float();
  v_.uint64_ = 0;
  v_.float_ = value;
}

inline void ObObj::set_ufloat(const float value)
{
  meta_.set_ufloat();
  v_.uint64_ = 0;
  v_.float_ = value;
}

inline void ObObj::set_ufloat_value(const float value)
{
  v_.uint64_ = 0;
  v_.float_ = value;
}

inline void ObObj::set_double(const ObObjType type, const double value)
{
  meta_.set_type(type);
  meta_.set_collation_level(CS_LEVEL_NUMERIC);
  v_.double_ = value;
}

inline void ObObj::set_double(const double value)
{
  meta_.set_double();
  v_.double_ = value;
}

inline void ObObj::set_double_value(const double value)
{
  v_.double_ = value;
}

inline void ObObj::set_udouble(const double value)
{
  meta_.set_udouble();
  v_.double_ = value;
}

inline void ObObj::set_udouble_value(const double value)
{
  v_.double_ = value;
}

inline void ObObj::set_number(const ObObjType type, const number::ObNumber& num)
{
  meta_.set_type(type);
  meta_.set_collation_level(CS_LEVEL_NUMERIC);
  nmb_desc_.desc_ = num.get_desc_value();
  v_.nmb_digits_ = num.get_digits();
}

inline void ObObj::set_number(const ObObjType type, const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits)
{
  meta_.set_type(type);
  meta_.set_collation_level(CS_LEVEL_NUMERIC);
  nmb_desc_ = nmb_desc;
  v_.nmb_digits_ = nmb_digits;
}

inline void ObObj::set_number(const number::ObNumber& num)
{
  meta_.set_number();
  nmb_desc_.desc_ = num.get_desc_value();
  v_.nmb_digits_ = num.get_digits();
}

inline void ObObj::set_number_value(const number::ObNumber& num)
{
  nmb_desc_.desc_ = num.get_desc_value();
  v_.nmb_digits_ = num.get_digits();
}

inline void ObObj::set_number_value(const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits)
{
  nmb_desc_ = nmb_desc;
  v_.nmb_digits_ = nmb_digits;
}

inline void ObObj::set_number(const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits)
{
  meta_.set_number();
  nmb_desc_ = nmb_desc;
  v_.nmb_digits_ = nmb_digits;
}

inline void ObObj::set_unumber(const number::ObNumber& num)
{
  meta_.set_unumber();
  nmb_desc_.desc_ = num.get_desc_value();
  v_.nmb_digits_ = num.get_digits();
}

inline void ObObj::set_unumber(const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits)
{
  meta_.set_unumber();
  nmb_desc_ = nmb_desc;
  v_.nmb_digits_ = nmb_digits;
}

inline void ObObj::set_unumber_value(const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits)
{
  nmb_desc_ = nmb_desc;
  v_.nmb_digits_ = nmb_digits;
}

inline void ObObj::set_number_float(const number::ObNumber& num)
{
  meta_.set_number_float();
  nmb_desc_.desc_ = num.get_desc_value();
  v_.nmb_digits_ = num.get_digits();
}

inline void ObObj::set_number_float(const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits)
{
  meta_.set_number_float();
  nmb_desc_ = nmb_desc;
  v_.nmb_digits_ = nmb_digits;
}

inline void ObObj::set_number_float_value(const number::ObNumber::Desc nmb_desc, uint32_t* nmb_digits)
{
  nmb_desc_ = nmb_desc;
  v_.nmb_digits_ = nmb_digits;
}

inline void ObObj::set_datetime(const ObObjType type, const int64_t value)
{
  meta_.set_type(type);
  meta_.set_collation_level(CS_LEVEL_NUMERIC);
  v_.datetime_ = value;
}

inline void ObObj::set_datetime(const int64_t value)
{
  meta_.set_datetime();
  v_.datetime_ = value;
}
inline void ObObj::set_datetime_value(const int64_t value)
{

  v_.datetime_ = value;
}

inline void ObObj::set_timestamp(const int64_t value)
{
  meta_.set_timestamp();
  v_.datetime_ = value;
}

inline void ObObj::set_timestamp_value(const int64_t value)
{
  v_.datetime_ = value;
}

inline void ObObj::set_date(const int32_t value)
{
  meta_.set_date();
  v_.uint64_ = 0;
  v_.date_ = value;
}

inline void ObObj::set_time(const int64_t value)
{
  meta_.set_time();
  v_.time_ = value;
}
inline void ObObj::set_date_value(const int32_t value)
{
  v_.uint64_ = 0;
  v_.date_ = value;
}

inline void ObObj::set_time_value(const int64_t value)
{
  v_.time_ = value;
}

inline void ObObj::set_year(const uint8_t value)
{
  meta_.set_year();
  v_.uint64_ = 0;
  v_.year_ = value;
}

inline void ObObj::set_year_value(const uint8_t value)
{
  v_.uint64_ = 0;
  v_.year_ = value;
}

inline void ObObj::set_common_value(const ObString& value)
{
  v_.string_ = value.ptr();
  val_len_ = value.length();
}

inline void ObObj::set_string(const ObObjType type, const char* ptr, const ObString::obstr_size_t size)
{
  meta_.set_type(type);
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = ptr;
  val_len_ = size;
}

inline void ObObj::set_string(const ObObjType type, const ObString& value)
{
  meta_.set_type(type);
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = value.ptr();
  val_len_ = value.length();
}

inline void ObObj::set_varchar(const ObString& value)
{
  meta_.set_varchar();
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = value.ptr();
  val_len_ = value.length();
}

inline void ObObj::set_varchar(const char* ptr, const ObString::obstr_size_t size)
{
  meta_.set_varchar();
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = ptr;
  val_len_ = size;
}

inline void ObObj::set_varchar_value(const char* ptr, const ObString::obstr_size_t size)
{
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = ptr;
  val_len_ = size;
}

inline void ObObj::set_varchar(const char* cstr)
{
  meta_.set_varchar();
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = cstr;
  val_len_ = static_cast<int32_t>(strlen(cstr));
}

inline void ObObj::set_char(const ObString& value)
{
  meta_.set_char();
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = value.ptr();
  val_len_ = value.length();
}

inline void ObObj::set_char_value(const char* ptr, const ObString::obstr_size_t size)
{
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = ptr;
  val_len_ = size;
}

inline void ObObj::set_varbinary(const ObString& value)
{
  meta_.set_varchar();
  meta_.set_collation_type(CS_TYPE_BINARY);
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = value.ptr();
  val_len_ = value.length();
}

inline void ObObj::set_binary(const ObString& value)
{
  meta_.set_char();
  meta_.set_collation_type(CS_TYPE_BINARY);
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = value.ptr();
  val_len_ = value.length();
}

inline void ObObj::set_raw(const ObString& value)
{
  meta_.set_raw();
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = value.ptr();
  val_len_ = value.length();
}

inline void ObObj::set_raw(const char* ptr, const ObString::obstr_size_t size)
{
  meta_.set_raw();
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = ptr;
  val_len_ = size;
}

inline void ObObj::set_raw_value(const char* ptr, const ObString::obstr_size_t size)
{
  meta_.set_collation_type(CS_TYPE_BINARY);
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = ptr;
  val_len_ = size;
}

inline void ObObj::set_hex_string(const ObString& value)
{
  meta_.set_hex_string();
  v_.string_ = value.ptr();
  val_len_ = value.length();
}

inline void ObObj::set_hex_string_value(const ObString& value)
{
  v_.string_ = value.ptr();
  val_len_ = value.length();
}

inline void ObObj::set_hex_string_value(const char* ptr, const ObString::obstr_size_t size)
{
  v_.string_ = ptr;
  val_len_ = size;
}

inline void ObObj::set_enum(const uint64_t value)
{
  meta_.set_enum();
  v_.uint64_ = value;
}

inline void ObObj::set_set(const uint64_t value)
{
  meta_.set_set();
  v_.uint64_ = value;
}

inline void ObObj::set_enum_value(const uint64_t value)
{
  v_.uint64_ = value;
}

inline void ObObj::set_set_value(const uint64_t value)
{
  v_.uint64_ = value;
}

inline void ObObj::set_enum_inner(const ObString& value)
{
  meta_.set_enum_inner();
  // meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = value.ptr();
  val_len_ = value.length();
}

inline void ObObj::set_enum_inner(const char* ptr, const ObString::obstr_size_t size)
{
  meta_.set_enum_inner();
  // meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = ptr;
  val_len_ = size;
}

inline void ObObj::set_set_inner(const ObString& value)
{
  meta_.set_set_inner();
  // meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = value.ptr();
  val_len_ = value.length();
}

inline void ObObj::set_set_inner(const char* ptr, const ObString::obstr_size_t size)
{
  meta_.set_set_inner();
  // meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = ptr;
  val_len_ = size;
}

inline void ObObj::set_lob_value(const ObObjType type, const ObLobData* value, const int32_t length)
{
  meta_.set_type(type);
  meta_.set_lob_outrow();
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.lob_ = value;
  val_len_ = length;
}

inline void ObObj::set_lob_value(const ObObjType type, const char* ptr, const int32_t length)
{
  meta_.set_type(type);
  meta_.set_lob_inrow();
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = ptr;
  val_len_ = length;
}

inline void ObObj::set_json_value(const ObObjType type, const ObLobData *value, const int32_t length)
{
  set_lob_value(type, value, length);
  meta_.set_collation_type(CS_TYPE_UTF8MB4_BIN); // for oracle it is decided by sys collation.
}

inline void ObObj::set_json_value(const ObObjType type, const char *ptr, const int32_t length)
{
  set_lob_value(type, ptr, length);
  meta_.set_collation_type(CS_TYPE_UTF8MB4_BIN); // for oracle it is decided by sys collation.
}

inline void ObObj::set_lob_locator(const ObLobLocator& value)
{
  meta_.set_type(ObLobType);
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.lob_locator_ = &value;
  val_len_ = value.get_total_size();
}

inline void ObObj::set_lob_locator(const ObObjType type, const ObLobLocator& value)
{
  UNUSED(type);
  meta_.set_type(ObLobType);
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.lob_locator_ = &value;
  val_len_ = value.get_total_size();
}

inline void ObObj::set_otimestamp_value(const ObObjType type, const ObOTimestampData& value)
{
  meta_.set_otimestamp_type(type);
  time_ctx_ = value.time_ctx_;
  v_.datetime_ = value.time_us_;
}

inline void ObObj::set_otimestamp_value(const ObObjType type, const int64_t time_us, const uint32_t time_ctx_desc)
{
  meta_.set_otimestamp_type(type);
  time_ctx_.desc_ = time_ctx_desc;
  v_.datetime_ = time_us;
}

inline void ObObj::set_otimestamp_value(const ObObjType type, const int64_t time_us, const uint16_t time_desc)
{
  meta_.set_otimestamp_type(type);
  time_ctx_.tz_desc_ = 0;
  time_ctx_.time_desc_ = time_desc;
  v_.datetime_ = time_us;
}

inline void ObObj::set_otimestamp_null(const ObObjType type)
{
  meta_.set_otimestamp_type(type);
  time_ctx_.tz_desc_ = 0;
  time_ctx_.time_desc_ = 0;
  time_ctx_.is_null_ = 1;
}

inline void ObObj::set_interval_ym(const ObIntervalYMValue& value)
{
  meta_.set_interval_ym();
  v_.nmonth_ = value.nmonth_;
  interval_fractional_ = 0;
}

inline void ObObj::set_interval_ds(const ObIntervalDSValue& value)
{
  meta_.set_interval_ds();
  v_.nsecond_ = value.nsecond_;
  interval_fractional_ = value.fractional_second_;
}

inline void ObObj::set_nvarchar2(const ObString& value)
{
  meta_.set_nvarchar2();
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = value.ptr();
  val_len_ = value.length();
}

inline void ObObj::set_nvarchar2_value(const char* ptr, const ObString::obstr_size_t size)
{
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = ptr;
  val_len_ = size;
}

inline void ObObj::set_nchar(const ObString& value)
{
  meta_.set_nchar();
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = value.ptr();
  val_len_ = value.length();
}

inline void ObObj::set_nchar_value(const char* ptr, const ObString::obstr_size_t size)
{
  meta_.set_collation_level(CS_LEVEL_IMPLICIT);
  v_.string_ = ptr;
  val_len_ = size;
}

inline void ObObj::set_null()
{
  meta_.set_null();
}

inline void ObObj::set_bool(const bool value)
{
  meta_.set_tinyint();
  v_.int64_ = static_cast<int64_t>(value);
}

inline void ObObj::set_ext(const int64_t value)
{
  meta_.set_ext();
  v_.ext_ = value;
}

inline void ObObj::set_extend(const int64_t value, uint8 extend_type, int32_t size)
{
  set_ext(value);
  meta_.set_extend_type(extend_type);
  set_val_len(size);
}

inline void ObObj::set_unknown(const int64_t value)
{
  meta_.set_unknown();
  v_.unknown_ = value;
}

inline void ObObj::set_bit(const uint64_t value)
{
  meta_.set_bit();
  v_.uint64_ = value;
}

inline void ObObj::set_bit_value(const uint64_t value)
{
  v_.uint64_ = value;
}

inline void ObObj::set_min_value()
{
  set_ext(MIN_OBJECT_VALUE);
}

inline void ObObj::set_max_value()
{
  set_ext(MAX_OBJECT_VALUE);
}

inline void ObObj::set_nop_value()
{
  set_ext(ObActionFlag::OP_NOP);
}

inline void ObObj::set_lob(const char* ptr, const int32_t size, const ObLobScale& lob_scale)
{
  meta_.set_scale(lob_scale.get_scale());
  v_.string_ = ptr;
  val_len_ = size;
}

inline bool ObObj::is_min_value() const
{
  return meta_.get_type() == ObExtendType && v_.ext_ == MIN_OBJECT_VALUE;
}

inline bool ObObj::is_max_value() const
{
  return meta_.get_type() == ObExtendType && v_.ext_ == MAX_OBJECT_VALUE;
}

inline bool ObObj::is_nop_value() const
{
  return meta_.get_type() == ObExtendType && v_.ext_ == ObActionFlag::OP_NOP;
}

inline bool ObObj::is_true() const
{
  return ob_is_int_tc(meta_.get_type()) && 0 != v_.int64_;
}

inline bool ObObj::is_false() const
{
  return ob_is_int_tc(meta_.get_type()) && 0 == v_.int64_;
}

inline bool ObObj::need_deep_copy() const
{
  return (((ob_is_string_type(meta_.get_type()) || 
            ob_is_lob_locator(meta_.get_type()) || 
            ob_is_json(meta_.get_type()) ||
            ob_is_raw(meta_.get_type()) ||
            ob_is_rowid_tc(meta_.get_type())) &&
            0 != val_len_ && NULL != get_string_ptr()) ||
            (ob_is_number_tc(meta_.get_type()) && 0 != nmb_desc_.len_ && NULL != get_number_digits()));
}

inline int64_t ObObj::get_ext() const
{
  int64_t res = 0;
  if (ObExtendType == meta_.get_type()) {
    res = v_.ext_;
  }
  return res;
}

inline void ObObj::set_val_len(const int32_t val_len)
{
  val_len_ = val_len;
}

inline void ObObj::set_null_meta(const ObObjMeta meta)
{
  null_meta_ = meta;
}

////////////////////////////////////////////////////////////////
inline int ObObj::get_tinyint(int8_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_tinyint()) {
    v = static_cast<int8_t>(v_.int64_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_smallint(int16_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_smallint()) {
    v = static_cast<int16_t>(v_.int64_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_mediumint(int32_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_mediumint()) {
    v = static_cast<int32_t>(v_.int64_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_int32(int32_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_int32()) {
    v = static_cast<int32_t>(v_.int64_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_int(int64_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_int()) {
    v = v_.int64_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_utinyint(uint8_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_utinyint()) {
    v = static_cast<uint8_t>(v_.uint64_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_usmallint(uint16_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_usmallint()) {
    v = static_cast<uint16_t>(v_.uint64_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_umediumint(uint32_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_umediumint()) {
    v = static_cast<uint32_t>(v_.uint64_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_uint32(uint32_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_uint32()) {
    v = static_cast<uint32_t>(v_.uint64_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_uint64(uint64_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_uint64()) {
    v = v_.uint64_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_float(float& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_float()) {
    v = v_.float_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_double(double& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_double()) {
    v = v_.double_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_ufloat(float& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_ufloat()) {
    v = v_.float_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_udouble(double& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_udouble()) {
    v = v_.double_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_number(number::ObNumber& num) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_number()) {
    num.assign(nmb_desc_.desc_, v_.nmb_digits_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_unumber(number::ObNumber& num) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_unumber()) {
    num.assign(nmb_desc_.desc_, v_.nmb_digits_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_number_float(number::ObNumber& num) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_number_float()) {
    num.assign(nmb_desc_.desc_, v_.nmb_digits_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_datetime(int64_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_datetime()) {
    v = v_.datetime_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_timestamp(int64_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_timestamp()) {
    v = v_.datetime_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_date(int32_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_date()) {
    v = v_.date_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_time(int64_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_time()) {
    v = v_.time_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_year(uint8_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_year()) {
    v = v_.year_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_string(ObString& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_string_or_lob_locator_type()) {
    if (ObLobType == meta_.get_type()) {
      if (OB_ISNULL(v_.lob_locator_)) {
        ret = OB_ERR_UNEXPECTED;
        OB_LOG(WARN, "Unexpected null lob locator", K(*this));
      } else if (OB_FAIL(v_.lob_locator_->get_payload(v))) {
        OB_LOG(WARN, "Failed to get payload from lob locator", K(ret), KPC(v_.lob_locator_));
      }
    } else {
      v.assign_ptr(v_.string_, val_len_);
    }
    ret = OB_SUCCESS;
  } else if (meta_.is_json()) {
    v.assign_ptr(v_.string_, val_len_);
    ret = OB_SUCCESS;
  } else if (meta_.is_null()) {
    v.assign_ptr(NULL, 0);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_print_string(ObString& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_string_type()) {
    v.assign_ptr(v_.string_, MIN(val_len_, OB_MAX_VARCHAR_LENGTH));
    ret = OB_SUCCESS;
  } else if (meta_.is_null()) {
    v.assign_ptr(NULL, 0);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_varchar(ObString& v) const
{
  return get_string(v);
}

inline int ObObj::get_char(ObString& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_char()) {
    v.assign_ptr(v_.string_, val_len_);
    ret = OB_SUCCESS;
  } else if (meta_.is_null()) {
    v.assign_ptr(NULL, 0);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_nvarchar2(ObString& v) const
{
  return get_string(v);
}

inline int ObObj::get_nchar(ObString& v) const
{
  return get_string(v);
}

inline int ObObj::get_varbinary(ObString& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_varbinary()) {
    v.assign_ptr(v_.string_, val_len_);
    ret = OB_SUCCESS;
  } else if (meta_.is_null()) {
    v.assign_ptr(NULL, 0);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_raw(ObString& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_raw()) {
    v.assign_ptr(v_.string_, val_len_);
    ret = OB_SUCCESS;
  } else if (meta_.is_null()) {
    v.assign_ptr(NULL, 0);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_binary(ObString& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_binary()) {
    v.assign_ptr(v_.string_, val_len_);
    ret = OB_SUCCESS;
  } else if (meta_.is_null()) {
    v.assign_ptr(NULL, 0);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_hex_string(ObString& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_hex_string()) {
    v.assign_ptr(v_.string_, val_len_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_lob_value(const ObLobData*& value) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (is_lob_outrow() || is_json_outrow()) {
    value = v_.lob_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_lob_locator(ObLobLocator*& lob_locator) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (is_lob_locator()) {
    lob_locator = const_cast<ObLobLocator*>(v_.lob_locator_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_bool(bool& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_tinyint()) {
    v = (0 != v_.int64_);
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_ext(int64_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_ext()) {
    v = v_.ext_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_unknown(int64_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_unknown()) {
    v = v_.unknown_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_bit(uint64_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_bit()) {
    v = v_.uint64_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_enum(uint64_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_enum()) {
    v = v_.uint64_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_set(uint64_t& v) const
{
  int ret = OB_OBJ_TYPE_ERROR;
  if (meta_.is_set()) {
    v = v_.uint64_;
    ret = OB_SUCCESS;
  }
  return ret;
}

inline int ObObj::get_enumset_inner_value(ObEnumSetInnerValue& inner_value) const
{
  int ret = OB_SUCCESS;
  if (!ob_is_enumset_inner_tc(get_type())) {
    ret = OB_OBJ_TYPE_ERROR;
  } else {
    int64_t pos = 0;
    if (OB_FAIL(inner_value.deserialize(v_.string_, val_len_, pos))) {}
  }
  return ret;
}

inline int ObObj::get_interval_ds(ObIntervalDSValue& value) const
{
  int ret = OB_SUCCESS;
  if (OB_UNLIKELY(!meta_.is_interval_ds())) {
    ret = OB_OBJ_TYPE_ERROR;
  } else {
    value = get_interval_ds();
  }
  return ret;
}

inline int ObObj::get_interval_ym(ObIntervalYMValue& value) const
{
  int ret = OB_SUCCESS;
  if (OB_UNLIKELY(!meta_.is_interval_ym())) {
    ret = OB_OBJ_TYPE_ERROR;
  } else {
    value = get_interval_ym();
  }
  return ret;
}

inline int ObObj::get_urowid(ObURowIDData& urowid_data) const
{
  int ret = common::OB_SUCCESS;
  urowid_data.rowid_content_ = (const uint8_t*)v_.string_;
  urowid_data.rowid_len_ = val_len_;
  return ret;
}
OB_INLINE static uint64_t varchar_hash_with_collation(
    const ObObj& obj, const ObCollationType cs_type, const uint64_t hash, hash_algo hash_al)
{
  return ObCharset::hash(cs_type,
      obj.get_string_ptr(),
      obj.get_string_len(),
      hash,
      obj.is_varying_len_char_type() && lib::is_oracle_mode(),
      hash_al);
}

inline uint64_t ObObj::varchar_hash(ObCollationType cs_type, uint64_t seed) const
{
  check_collation_integrity();
  return varchar_hash_with_collation(*this, cs_type, seed, NULL);
}

inline uint64_t ObObj::varchar_murmur_hash(ObCollationType cs_type, uint64_t seed) const
{
  check_collation_integrity();
  return varchar_hash_with_collation(*this, cs_type, seed, ObMurmurHash::hash);
}

inline uint64_t ObObj::varchar_wy_hash(ObCollationType cs_type, uint64_t seed) const
{
  check_collation_integrity();
  return varchar_hash_with_collation(*this, cs_type, seed, ObWyHash::hash);
}

inline uint64_t ObObj::varchar_xx_hash(ObCollationType cs_type, uint64_t seed) const
{
  check_collation_integrity();
  return varchar_hash_with_collation(*this, cs_type, seed, ObXxHash::hash);
}

inline const void* ObObj::get_data_ptr() const
{
  const void* ret = NULL;
  if (ob_is_string_type(get_type()) || ob_is_raw(get_type()) || 
      ob_is_rowid_tc(get_type()) || ob_is_json(get_type())) {
    ret = const_cast<char*>(v_.string_);
  } else if (ob_is_number_tc(get_type())) {
    ret = const_cast<uint32_t*>(v_.nmb_digits_);
  } else if (ob_is_lob_locator(get_type())) {
    ret = const_cast<ObLobLocator*>(v_.lob_locator_);
  } else {
    ret = &v_;
  }
  return ret;
};

inline void ObObj::set_data_ptr(void* data_ptr)
{
  if (ob_is_string_type(get_type()) || ob_is_raw(get_type()) || 
      ob_is_rowid_tc(get_type()) || ob_is_json(get_type())) {
    v_.string_ = static_cast<char*>(data_ptr);
  } else if (ob_is_number_tc(get_type())) {
    v_.nmb_digits_ = static_cast<uint32_t*>(data_ptr);
  } else if (ob_is_lob_locator(get_type())) {
    v_.lob_locator_ = static_cast<ObLobLocator*>(data_ptr);
  } else {
    //@TODO other value pointer
  }
};

template <typename Allocator>
int ObObj::to_collation_free_obj(ObObj& dst, bool& is_valid_collation_free, Allocator& allocator)
{
  int ret = OB_SUCCESS;
  const int32_t len = get_string_len();
  const bool is_copy_all = true;
  const int32_t buf_len = len * 2;
  char* buf = NULL;
  is_valid_collation_free = true;
  if (!is_character_type()) {
    ret = OB_INVALID_ARGUMENT;
    COMMON_LOG(WARN,
        "invalid argument, only varchar or char can be transformed to collation free obj",
        K(ret),
        "obj type",
        get_type());
  } else {
    if (0 == len || NULL == get_string_ptr()) {
      copy_value_or_obj(dst, is_copy_all);
      dst.set_collation_type(CS_TYPE_COLLATION_FREE);
    } else {
      if (OB_ISNULL(buf = static_cast<char*>(allocator.alloc(buf_len)))) {
        ret = OB_ALLOCATE_MEMORY_FAILED;
        COMMON_LOG(WARN, "fail to allocate memory", K(ret), K(buf_len));
      } else {
        size_t size = ObCharset::sortkey(get_collation_type(),
            get_string_ptr(),
            static_cast<int64_t>(len),
            buf,
            static_cast<int64_t>(buf_len),
            is_valid_collation_free);
        copy_value_or_obj(dst, is_copy_all);
        if (is_varchar()) {
          dst.set_varchar_value(buf, static_cast<int32_t>(size));
        } else {
          dst.set_char_value(buf, static_cast<int32_t>(size));
        }
        dst.set_collation_type(CS_TYPE_COLLATION_FREE);
      }
    }
  }
  return ret;
}

// return byte length
inline int64_t ObObj::get_data_length() const
{
  int64_t ret = sizeof(v_);
  if (ob_is_string_type(get_type()) || ob_is_raw(get_type()) || ob_is_rowid_tc(get_type()) ||
      ob_is_lob_locator(get_type()) || ob_is_json(get_type()) ) {
    ret = val_len_;
  } else if (ob_is_number_tc(get_type())) {
    ret = nmb_desc_.len_ * sizeof(uint32_t);
  }
  return ret;
};

template <typename AllocatorT>
int ob_write_obj(AllocatorT& allocator, const ObObj& src, ObObj& dst)
{
  int ret = OB_SUCCESS;
  if (OB_UNLIKELY(src.need_deep_copy())) {
    int64_t deep_copy_size = src.get_deep_copy_size();
    char* buf = static_cast<char*>(allocator.alloc(deep_copy_size));
    int64_t pos = 0;
    if (OB_ISNULL(buf)) {
      ret = OB_ALLOCATE_MEMORY_FAILED;
      LIB_LOG(WARN, "allocate memory failed", K(ret), K(deep_copy_size));
    } else if (OB_FAIL(dst.deep_copy(src, buf, deep_copy_size, pos))) {
      LIB_LOG(WARN, "deep copy src obj failed", K(ret), K(deep_copy_size), K(pos));
    }
  } else {
    dst = src;
  }
  return ret;
}

inline int ObObj::write_otimestamp(char* buf, const int64_t len, int64_t& pos) const
{
  int ret = common::OB_SUCCESS;
  if (OB_ISNULL(buf) || OB_UNLIKELY(len < get_otimestamp_store_size())) {
    ret = common::OB_INVALID_ARGUMENT;
    OB_LOG(WARN, "invalid argument", KP(buf), K(len));
  } else {
    const ObOTimestampData& ot_data = get_otimestamp_value();
    *reinterpret_cast<int64_t*>(buf) = ot_data.time_us_;
    if (is_timestamp_tz()) {
      *reinterpret_cast<uint32_t*>(buf + sizeof(int64_t)) = ot_data.time_ctx_.desc_;
      pos += static_cast<int64_t>(sizeof(int64_t) + sizeof(uint32_t));
    } else {
      *reinterpret_cast<uint16_t*>(buf + sizeof(int64_t)) = ot_data.time_ctx_.time_desc_;
      pos += static_cast<int64_t>(sizeof(int64_t) + sizeof(uint16_t));
    }
  }
  return ret;
}

inline int ObObj::read_otimestamp(const char* buf, const int64_t len)
{
  int ret = common::OB_SUCCESS;
  if (OB_ISNULL(buf) || OB_UNLIKELY(len < get_otimestamp_store_size())) {
    ret = common::OB_INVALID_ARGUMENT;
    OB_LOG(WARN, "invalid argument", KP(buf), K(len));
  } else {
    const int64_t time_us = *reinterpret_cast<int64_t*>(const_cast<char*>(buf));
    if (is_timestamp_tz()) {
      const uint32_t time_ctx_desc = *reinterpret_cast<const uint32_t*>(buf + sizeof(int64_t));
      set_otimestamp_value(get_type(), time_us, time_ctx_desc);
    } else {
      const uint16_t time_desc = *reinterpret_cast<const uint16_t*>(buf + sizeof(int64_t));
      set_otimestamp_value(get_type(), time_us, time_desc);
    }
  }
  return ret;
}

int ObObj::read_interval(const char* buf)
{
  int ret = OB_SUCCESS;
  if (OB_ISNULL(buf)) {
    ret = OB_INVALID_ARGUMENT;
    OB_LOG(WARN, "invalid argument", KP(buf));
  } else if (is_interval_ym()) {
    ObIntervalYMValue value;
    if (OB_FAIL(value.decode(buf))) {
    } else {
      set_interval_ym(value);
    }
  } else {
    ObIntervalDSValue value;
    if (OB_FAIL(value.decode(buf))) {
    } else {
      set_interval_ds(value);
    }
  }
  return ret;
}

int64_t ObObj::get_interval_store_size() const
{
  return is_interval_ym() ? ObIntervalYMValue::get_store_size() : ObIntervalDSValue::get_store_size();
}

int ObObj::write_interval(char* buf) const
{
  int ret = common::OB_SUCCESS;
  if (OB_ISNULL(buf)) {
    ret = common::OB_INVALID_ARGUMENT;
    OB_LOG(WARN, "invalid argument", KP(buf));
  } else {
    ret = is_interval_ym() ? get_interval_ym().encode(buf) : get_interval_ds().encode(buf);
  }
  return ret;
}

inline bool ObObj::strict_equal(const ObObj& other) const
{
  bool bret = true;
  if (OB_UNLIKELY(get_type() != other.get_type())) {
    bret = false;
  } else {
    // here must use CS_TYPE_BINARY to compare, avoid spaces at the end of the string be ignored
    bret = (0 == compare(other, CS_TYPE_BINARY));
    if (bret && is_timestamp_tz()) {
      // for the data type of timestamp with time zone,
      // obj meaningful info includes v_.datetime_ and time_ctx_.desc_
      // so we must compare time_ctx_.desc_ here
      bret = (time_ctx_.desc_ == other.time_ctx_.desc_);
    }
  }
  return bret;
}

#define DEFINE_SET_COMMON_OBJ_VALUE(VTYPE, OBJTYPE)           \
  template <>                                                 \
  inline void ObObj::set_obj_value<OBJTYPE>(const OBJTYPE& v) \
  {                                                           \
    v_.VTYPE##_ = static_cast<typeof(v_.VTYPE##_)>(v);        \
  }

DEFINE_SET_COMMON_OBJ_VALUE(int64, int8_t);
DEFINE_SET_COMMON_OBJ_VALUE(uint64, uint8_t);
DEFINE_SET_COMMON_OBJ_VALUE(int64, int16_t);
DEFINE_SET_COMMON_OBJ_VALUE(uint64, uint16_t);
DEFINE_SET_COMMON_OBJ_VALUE(int64, int32_t);
DEFINE_SET_COMMON_OBJ_VALUE(uint64, uint32_t);
DEFINE_SET_COMMON_OBJ_VALUE(float, float);
DEFINE_SET_COMMON_OBJ_VALUE(double, double);
DEFINE_SET_COMMON_OBJ_VALUE(int64, int64_t);
DEFINE_SET_COMMON_OBJ_VALUE(uint64, uint64_t);
template <>
inline void ObObj::set_obj_value<ObString>(const ObString& v)
{
  v_.string_ = v.ptr();
  val_len_ = v.length();
}

template <>
inline void ObObj::set_obj_value<ObIntervalYMValue>(const ObIntervalYMValue& v)
{
  v_.nmonth_ = v.nmonth_;
  interval_fractional_ = 0;
}

template <>
inline void ObObj::set_obj_value<ObIntervalDSValue>(const ObIntervalDSValue& v)
{
  v_.nsecond_ = v.nsecond_;
  interval_fractional_ = v.fractional_second_;
}

template <>
inline void ObObj::set_obj_value<ObURowIDData>(const ObURowIDData& urowid)
{
  v_.string_ = (const char*)urowid.rowid_content_;
  val_len_ = urowid.rowid_len_;
}

struct ParamFlag {
  ParamFlag()
      : need_to_check_type_(true),
        need_to_check_bool_value_(false),
        expected_bool_value_(false),
        need_to_check_extend_type_(false),
        is_ref_cursor_type_(false),
        is_boolean_(false),
        reserved_(0)
  {}
  TO_STRING_KV(K_(need_to_check_type), K_(need_to_check_bool_value), K_(expected_bool_value));
  void reset();

  static uint32_t flag_offset_bits()
  {
    return offsetof(ParamFlag, flag_) * 8;
  }

  union {
    uint8_t flag_;
    struct {
      uint8_t need_to_check_type_ : 1;         // TRUE if the type need to be checked by plan cache, FALSE otherwise
      uint8_t need_to_check_bool_value_ : 1;   // TRUE if the bool value need to be checked by plan cache, FALSE
                                               // otherwise
      uint8_t expected_bool_value_ : 1;        // bool value, effective only when need_to_check_bool_value_ is true
      uint8_t need_to_check_extend_type_ : 1;  // True if the extended type needs to be checked
      uint8_t is_ref_cursor_type_ : 1;         // in pl/sql context, this will be true if the local var is a ref cursor
      uint8_t is_pl_mock_default_param_ : 1; // UNUSED
      uint8_t is_boolean_ : 1; // to distinguish T_BOOL and T_TINYINT
      uint8_t reserved_ : 1;
    };
  };

  OB_UNIS_VERSION_V(1);
};

class ObObjParam : public ObObj {
public:
  ObObjParam() : ObObj(), accuracy_(), res_flags_(0), raw_text_pos_(-1), raw_text_len_(-1)
  {}
  ObObjParam(const ObObj& other) : ObObj(other), accuracy_(), res_flags_(0), raw_text_pos_(-1), raw_text_len_(-1)
  {}

public:
  void reset();
  // accuracy.
  OB_INLINE void set_accuracy(const common::ObAccuracy& accuracy)
  {
    accuracy_.set_accuracy(accuracy);
  }
  OB_INLINE void set_length(common::ObLength length)
  {
    accuracy_.set_length(length);
  }
  OB_INLINE void set_precision(common::ObPrecision precision)
  {
    accuracy_.set_precision(precision);
  }
  OB_INLINE void set_length_semantics(common::ObLengthSemantics length_semantics)
  {
    accuracy_.set_length_semantics(length_semantics);
  }
  OB_INLINE void set_scale(common::ObScale scale)
  {
    ObObj::set_scale(scale);
    accuracy_.set_scale(scale);
  }
  OB_INLINE void set_udt_id(uint64_t id)
  {
    accuracy_.set_accuracy(id);
  }
  OB_INLINE const common::ObAccuracy& get_accuracy() const
  {
    return accuracy_;
  }
  OB_INLINE common::ObLength get_length() const
  {
    return accuracy_.get_length();
  }
  OB_INLINE common::ObPrecision get_precision() const
  {
    return accuracy_.get_precision();
  }
  OB_INLINE common::ObScale get_scale() const
  {
    return accuracy_.get_scale();
  }
  OB_INLINE uint64_t get_udt_id() const
  {
    return is_ext() ? accuracy_.get_accuracy() : OB_INVALID_INDEX;
  }
  OB_INLINE void set_result_flag(uint32_t flag)
  {
    res_flags_ |= flag;
  }
  OB_INLINE void unset_result_flag(uint32_t flag)
  {
    res_flags_ &= (~flag);
  }
  OB_INLINE bool has_result_flag(uint32_t flag) const
  {
    return res_flags_ & flag;
  }
  OB_INLINE uint32_t get_result_flag() const
  {
    return res_flags_;
  }

  OB_INLINE const ParamFlag& get_param_flag() const
  {
    return flag_;
  }
  OB_INLINE void set_param_flag(const ParamFlag flag)
  {
    flag_ = flag;
  }
  OB_INLINE void set_need_to_check_type(bool flag)
  {
    flag_.need_to_check_type_ = flag;
  }
  OB_INLINE bool need_to_check_type() const
  {
    return flag_.need_to_check_type_;
  }
  OB_INLINE void set_need_to_check_extend_type(bool flag)
  {
    flag_.need_to_check_extend_type_ = flag;
  }
  OB_INLINE bool need_to_check_extend_type() const
  {
    return flag_.need_to_check_extend_type_;
  }

  OB_INLINE void set_need_to_check_bool_value(bool flag)
  {
    flag_.need_to_check_bool_value_ = flag;
  }
  OB_INLINE bool need_to_check_bool_value() const
  {
    return flag_.need_to_check_bool_value_;
  }

  OB_INLINE void set_expected_bool_value(bool b_value)
  {
    flag_.expected_bool_value_ = b_value;
  }
  OB_INLINE bool expected_bool_value() const
  {
    return flag_.expected_bool_value_;
  }

  OB_INLINE void set_is_ref_cursor_type(bool flag)
  {
    flag_.is_ref_cursor_type_ = flag;
  }
  OB_INLINE bool is_ref_cursor_type() const
  {
    return flag_.is_ref_cursor_type_;
  }
  OB_INLINE void set_is_boolean(bool flag) 
  { 
    flag_.is_boolean_ = flag; 
  }
  OB_INLINE bool is_boolean() const 
  { 
    return flag_.is_boolean_; 
  }
  OB_INLINE void set_raw_text_info(int32_t pos, int32_t len)
  {
    raw_text_pos_ = pos;
    raw_text_len_ = len;
  }
  OB_INLINE int32_t get_raw_text_pos() const
  {
    return raw_text_pos_;
  }
  OB_INLINE int32_t get_raw_text_len() const
  {
    return raw_text_len_;
  }
  OB_INLINE void set_param_meta()
  {
    param_meta_ = get_meta();
  }
  OB_INLINE void set_param_meta(const ObObjMeta& meta)
  {
    param_meta_ = meta;
  }
  OB_INLINE const ObObjMeta& get_param_meta() const
  {
    return param_meta_;
  }

  // others.
  INHERIT_TO_STRING_KV(
      N_OBJ, ObObj, N_ACCURACY, accuracy_, N_FLAG, res_flags_, K_(raw_text_pos), K_(raw_text_len), K_(param_meta));
  NEED_SERIALIZE_AND_DESERIALIZE;

  static uint32_t accuracy_offset_bits()
  {
    return offsetof(ObObjParam, accuracy_) * 8;
  }
  static uint32_t res_flags_offset_bits()
  {
    return offsetof(ObObjParam, res_flags_) * 8;
  }
  static uint32_t flag_offset_bits()
  {
    return offsetof(ObObjParam, flag_) * 8;
  }

private:
  ObAccuracy accuracy_;
  uint32_t res_flags_;  // BINARY, NUM, NOT_NULL, TIMESTAMP, etc
                        // reference: src/lib/regex/include/mysql_com.h
  ParamFlag flag_;
  int32_t raw_text_pos_;
  int32_t raw_text_len_;
  ObObjMeta param_meta_;  // meta for objparma, to solve Oracle NULL/'' problem
};

struct ObDataType {
  OB_UNIS_VERSION(1);

public:
  ObDataType() : meta_(), accuracy_(), charset_(CHARSET_UTF8MB4), is_binary_collation_(false), is_zero_fill_(false)
  {}
  TO_STRING_KV(K_(meta), K_(accuracy), K_(charset), K_(is_binary_collation), K_(is_zero_fill));
  inline void reset()
  {
    meta_.reset();
    accuracy_.reset();
    charset_ = CHARSET_UTF8MB4;
    is_binary_collation_ = false;
    is_zero_fill_ = false;
  }
  inline bool operator==(const ObDataType& other) const
  {
    return meta_ == other.meta_ && accuracy_ == other.accuracy_ && charset_ == other.charset_ &&
           is_binary_collation_ == other.is_binary_collation_ && is_zero_fill_ == other.is_zero_fill_;
  }
  inline ObObjType get_obj_type() const
  {
    return meta_.get_type();
  }
  inline ObObjTypeClass get_type_class() const
  {
    return meta_.get_type_class();
  }
  inline ObLength get_length() const
  {
    return accuracy_.get_length();
  }
  inline ObPrecision get_precision() const
  {
    return accuracy_.get_precision();
  }
  inline ObLengthSemantics get_length_semantics() const
  {
    return accuracy_.get_length_semantics();
  }
  inline ObScale get_scale() const
  {
    return accuracy_.get_scale();
  }
  inline ObCharsetType get_charset_type() const
  {
    return charset_;
  }
  inline ObCollationType get_collation_type() const
  {
    return meta_.get_collation_type();
  }
  inline ObCollationLevel get_collation_level() const
  {
    return meta_.get_collation_level();
  }
  inline bool is_binary_collation() const
  {
    return is_binary_collation_;
  }
  inline bool is_zero_fill() const
  {
    return is_zero_fill_;
  }
  inline void set_obj_type(const ObObjType& type)
  {
    return meta_.set_type(type);
  }
  inline void set_length(const ObLength length)
  {
    accuracy_.set_length(length);
  }
  inline void set_precision(const ObPrecision precision)
  {
    accuracy_.set_precision(precision);
  }
  inline void set_length_semantics(const ObLengthSemantics length_semantics)
  {
    accuracy_.set_length_semantics(length_semantics);
  }
  inline void set_scale(const ObScale scale)
  {
    accuracy_.set_scale(scale);
  }
  inline void set_charset_type(const ObCharsetType charset_type)
  {
    charset_ = charset_type;
  }
  inline void set_collation_type(const ObCollationType coll_type)
  {
    meta_.set_collation_type(coll_type);
  }
  inline void set_collation_level(const ObCollationLevel coll_level)
  {
    meta_.set_collation_level(coll_level);
  }
  inline void set_binary_collation(const bool is_binary_collation)
  {
    is_binary_collation_ = is_binary_collation;
  }
  inline void set_zero_fill(const bool is_zero_fill)
  {
    is_zero_fill_ = is_zero_fill;
  }
  inline const ObObjMeta& get_meta_type() const
  {
    return meta_;
  }
  inline void set_meta_type(const ObObjMeta& meta_type)
  {
    meta_ = meta_type;
  }
  inline const ObAccuracy& get_accuracy() const
  {
    return accuracy_;
  }
  inline void set_accuracy(const ObAccuracy& accuracy)
  {
    accuracy_ = accuracy;
  }
  inline int64_t get_accuracy_value() const
  {
    return accuracy_.accuracy_;
  }
  inline void set_int()
  {
    meta_.set_int();
  }
  inline uint64_t get_udt_id() const
  {
    return accuracy_.get_accuracy();
  }
  inline void set_udt_id(uint64_t udt_id)
  {
    accuracy_.set_accuracy(udt_id);
  }
  ObObjMeta meta_;
  ObAccuracy accuracy_;
  ObCharsetType charset_;
  bool is_binary_collation_;
  bool is_zero_fill_;
};

OB_INLINE int64_t ObObj::get_deep_copy_size() const
{
  int64_t ret = 0;
  if (is_string_type() || is_raw() || ob_is_rowid_tc(get_type()) || is_lob_locator() || is_json()) {
    ret += val_len_;
  } else if (ob_is_number_tc(get_type())) {
    ret += (sizeof(uint32_t) * nmb_desc_.len_);
  }
  return ret;
}

typedef int (*ob_obj_print)(
    const ObObj& obj, char* buffer, int64_t length, int64_t& pos, const ObObjPrintParams& params);
typedef int64_t (*ob_obj_crc64)(const ObObj& obj, const int64_t current);
typedef void (*ob_obj_batch_checksum)(const ObObj& obj, ObBatchChecksum& bc);
typedef uint64_t (*ob_obj_hash)(const ObObj& obj, const uint64_t hash);
typedef int (*ob_obj_value_serialize)(const ObObj& obj, char* buf, const int64_t buf_len, int64_t& pos);
typedef int (*ob_obj_value_deserialize)(ObObj& obj, const char* buf, const int64_t data_len, int64_t& pos);
typedef int64_t (*ob_obj_value_get_serialize_size)(const ObObj& obj);
typedef uint64_t (*ob_obj_crc64_v3)(const ObObj& obj, const uint64_t hash);

class ObObjUtil {
public:
  static ob_obj_hash get_murmurhash_v3(ObObjType type);
  static ob_obj_hash get_murmurhash_v2(ObObjType type);
  static ob_obj_crc64_v3 get_crc64_v3(ObObjType type);
  static ob_obj_hash get_xxhash64(ObObjType type);
  static ob_obj_hash get_wyhash(ObObjType type);
};

class ObHexEscapeSqlStr {
public:
  ObHexEscapeSqlStr(const common::ObString &str) : str_(str), skip_escape_(false)
  {}
  ObHexEscapeSqlStr(const common::ObString &str, const bool skip_escape) : str_(str), skip_escape_(skip_escape)
  {}
  ObString str() const
  {
    return str_;
  }
  int64_t get_extra_length() const;
  DECLARE_TO_STRING;

private:
  ObString str_;
  bool skip_escape_;
};

}  // namespace common
}  // namespace oceanbase

#endif  //