executorimpl.h

/*
 * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
 *
 * This program is free software: you can use, redistribute, and/or modify
 * it under the terms of the GNU Affero General Public License, version 3
 * or later ("AGPL"), as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
// clang-format off
#ifndef TDENGINE_EXECUTORIMPL_H
#define TDENGINE_EXECUTORIMPL_H

#ifdef __cplusplus
extern "C" {
#endif

#include "os.h"
#include "tcommon.h"
#include "tlosertree.h"
#include "tsort.h"
#include "ttszip.h"
#include "tvariant.h"

#include "dataSinkMgt.h"
#include "executil.h"
#include "executor.h"
#include "planner.h"
#include "scalar.h"
#include "taosdef.h"
#include "tarray.h"
#include "thash.h"
#include "tlockfree.h"
#include "tmsg.h"
#include "tpagedbuf.h"
#include "tstreamUpdate.h"
#include "tstream.h"

#include "vnode.h"
#include "executorInt.h"

typedef int32_t (*__block_search_fn_t)(char* data, int32_t num, int64_t key, int32_t order);

#define IS_QUERY_KILLED(_q)   ((_q)->code == TSDB_CODE_TSC_QUERY_CANCELLED)
#define Q_STATUS_EQUAL(p, s)  (((p) & (s)) != 0u)
#define QUERY_IS_ASC_QUERY(q) (GET_FORWARD_DIRECTION_FACTOR((q)->order.order) == QUERY_ASC_FORWARD_STEP)

#define NEEDTO_COMPRESS_QUERY(size) ((size) > tsCompressColData ? 1 : 0)

#define START_TS_COLUMN_INDEX       0
#define END_TS_COLUMN_INDEX         1
#define UID_COLUMN_INDEX            2
#define GROUPID_COLUMN_INDEX        UID_COLUMN_INDEX
#define DELETE_GROUPID_COLUMN_INDEX 2

enum {
  // when this task starts to execute, this status will set
  TASK_NOT_COMPLETED = 0x1u,

  /* Task is over
   * 1. this status is used in one row result query process, e.g., count/sum/first/last/ avg...etc.
   * 2. when all data within queried time window, it is also denoted as query_completed
   */
  TASK_COMPLETED = 0x2u,
};

/**
 * If the number of generated results is greater than this value,
 * query query will be halt and return results to client immediate.
 */
typedef struct SResultInfo {  // TODO refactor
  int64_t totalRows;          // total generated result size in rows
  int64_t totalBytes;         // total results in bytes.
  int32_t capacity;           // capacity of current result output buffer
  int32_t threshold;          // result size threshold in rows.
} SResultInfo;

typedef struct STableQueryInfo {
  TSKEY              lastKey;  // last check ts, todo remove it later
  SResultRowPosition pos;      // current active time window
} STableQueryInfo;

typedef struct SLimit {
  int64_t limit;
  int64_t offset;
} SLimit;

typedef struct STableScanAnalyzeInfo SFileBlockLoadRecorder;

typedef struct STaskCostInfo {
  int64_t  created;
  int64_t  start;
  uint64_t loadStatisTime;
  uint64_t loadFileBlockTime;
  uint64_t loadDataInCacheTime;
  uint64_t loadStatisSize;
  uint64_t loadFileBlockSize;
  uint64_t loadDataInCacheSize;

  uint64_t loadDataTime;

  SFileBlockLoadRecorder* pRecoder;
  uint64_t                elapsedTime;

  uint64_t firstStageMergeTime;
  uint64_t winInfoSize;
  uint64_t tableInfoSize;
  uint64_t hashSize;
  uint64_t numOfTimeWindows;

  SArray*   queryProfEvents;      // SArray<SQueryProfEvent>
  SHashObj* operatorProfResults;  // map<operator_type, SQueryProfEvent>
} STaskCostInfo;

typedef struct SOperatorCostInfo {
  double openCost;
  double totalCost;
} SOperatorCostInfo;

struct SOperatorInfo;

typedef int32_t (*__optr_encode_fn_t)(struct SOperatorInfo* pOperator, char** result, int32_t* length);
typedef int32_t (*__optr_decode_fn_t)(struct SOperatorInfo* pOperator, char* result);

typedef int32_t (*__optr_open_fn_t)(struct SOperatorInfo* pOptr);
typedef SSDataBlock* (*__optr_fn_t)(struct SOperatorInfo* pOptr);
typedef void (*__optr_close_fn_t)(void* param, int32_t num);
typedef int32_t (*__optr_explain_fn_t)(struct SOperatorInfo* pOptr, void** pOptrExplain, uint32_t* len);

typedef struct STaskIdInfo {
  uint64_t queryId;  // this is also a request id
  uint64_t subplanId;
  uint64_t templateId;
  char*    str;
} STaskIdInfo;

enum {
  STREAM_RECOVER_STEP__NONE = 0,
  STREAM_RECOVER_STEP__PREPARE,
  STREAM_RECOVER_STEP__SCAN,
};

typedef struct {
  //TODO remove prepareStatus
  STqOffsetVal   prepareStatus; // for tmq
  STqOffsetVal   lastStatus;    // for tmq
  void*          metaBlk;       // for tmq fetching meta
  SSDataBlock*   pullOverBlk;   // for streaming
  SWalFilterCond cond;
  int64_t        lastScanUid;
  int8_t         recoverStep;
  SQueryTableDataCond tableCond;
  int64_t recoverStartVer;
  int64_t recoverEndVer;
} SStreamTaskInfo;

typedef struct {
  char*           tablename;
  char*           dbname;
  int32_t         tversion;
  SSchemaWrapper* sw;
} SSchemaInfo;

typedef struct SExecTaskInfo {
  STaskIdInfo      id;
  uint32_t         status;
  STimeWindow      window;
  STaskCostInfo    cost;
  int64_t          owner;  // if it is in execution
  int32_t          code;

  SStreamTaskInfo  streamInfo;
  SSchemaInfo      schemaInfo;
  STableListInfo   tableqinfoList;  // this is a table list
  const char*      sql;             // query sql string
  jmp_buf          env;             // jump to this position when error happens.
  EOPTR_EXEC_MODEL execModel;       // operator execution model [batch model|stream model]
  SSubplan*        pSubplan;
  struct SOperatorInfo* pRoot;
} SExecTaskInfo;

enum {
  OP_NOT_OPENED    = 0x0,
  OP_OPENED        = 0x1,
  OP_RES_TO_RETURN = 0x5,
  OP_EXEC_DONE     = 0x9,
};

typedef struct SOperatorFpSet {
  __optr_open_fn_t    _openFn;  // DO NOT invoke this function directly
  __optr_fn_t         getNextFn;
  __optr_fn_t         getStreamResFn;  // execute the aggregate in the stream model, todo remove it
  __optr_fn_t         cleanupFn;       // call this function to release the allocated resources ASAP
  __optr_close_fn_t   closeFn;
  __optr_encode_fn_t  encodeResultRow;
  __optr_decode_fn_t  decodeResultRow;
  __optr_explain_fn_t getExplainFn;
} SOperatorFpSet;

typedef struct SExprSupp {
  SExprInfo*      pExprInfo;
  int32_t         numOfExprs;  // the number of scalar expression in group operator
  SqlFunctionCtx* pCtx;
  int32_t*        rowEntryInfoOffset;  // offset value for each row result cell info
} SExprSupp;

typedef struct SOperatorInfo {
  uint8_t                operatorType;
  bool                   blocking;  // block operator or not
  uint8_t                status;    // denote if current operator is completed
  char*                  name;      // name, for debug purpose
  void*                  info;      // extension attribution
  SExprSupp              exprSupp;
  SExecTaskInfo*         pTaskInfo;
  SOperatorCostInfo      cost;
  SResultInfo            resultInfo;
  struct SOperatorInfo** pDownstream;      // downstram pointer list
  int32_t                numOfDownstream;  // number of downstream. The value is always ONE expect for join operator
  SOperatorFpSet         fpSet;
} SOperatorInfo;

typedef enum {
  EX_SOURCE_DATA_NOT_READY = 0x1,
  EX_SOURCE_DATA_READY     = 0x2,
  EX_SOURCE_DATA_EXHAUSTED = 0x3,
} EX_SOURCE_STATUS;

#define COL_MATCH_FROM_COL_ID  0x1
#define COL_MATCH_FROM_SLOT_ID 0x2

typedef struct SSourceDataInfo {
  int32_t            index;
  SRetrieveTableRsp* pRsp;
  uint64_t           totalRows;
  int32_t            code;
  EX_SOURCE_STATUS   status;
  const char*        taskId;
} SSourceDataInfo;

typedef struct SLoadRemoteDataInfo {
  uint64_t totalSize;     // total load bytes from remote
  uint64_t totalRows;     // total number of rows
  uint64_t totalElapsed;  // total elapsed time
} SLoadRemoteDataInfo;

typedef struct SLimitInfo {
  SLimit              limit;
  SLimit              slimit;
  uint64_t            currentGroupId;
  int64_t             remainGroupOffset;
  int64_t             numOfOutputGroups;
  int64_t             remainOffset;
  int64_t             numOfOutputRows;
} SLimitInfo;

typedef struct SExchangeInfo {
  SArray*             pSources;
  SArray*             pSourceDataInfo;
  tsem_t              ready;
  void*               pTransporter;
  SSDataBlock*        pResult;
  bool                seqLoadData;  // sequential load data or not, false by default
  int32_t             current;
  SLoadRemoteDataInfo loadInfo;
  uint64_t            self;
  SLimitInfo          limitInfo;
} SExchangeInfo;

typedef struct SColMatchInfo {
  int32_t srcSlotId;     // source slot id
  int32_t colId;
  int32_t targetSlotId;
  bool    output;        // todo remove this?
  bool    reserved;
  int32_t matchType;     // determinate the source according to col id or slot id
} SColMatchInfo;

typedef struct SScanInfo {
  int32_t         numOfAsc;
  int32_t         numOfDesc;
} SScanInfo;

typedef struct SSampleExecInfo {
  double          sampleRatio;  // data block sample ratio, 1 by default
  uint32_t        seed;         // random seed value
} SSampleExecInfo;

enum {
  TABLE_SCAN__TABLE_ORDER = 1,
  TABLE_SCAN__BLOCK_ORDER = 2,
};

typedef struct STableScanInfo {
  STsdbReader*    dataReader;
  SReadHandle     readHandle;

  SFileBlockLoadRecorder readRecorder;
  SScanInfo       scanInfo;
  int32_t         scanTimes;
  SNode*          pFilterNode;  // filter info, which is push down by optimizer

  SSDataBlock*    pResBlock;
  SArray*         pColMatchInfo;
  SExprSupp       pseudoSup;
  SQueryTableDataCond cond;
  int32_t         scanFlag;     // table scan flag to denote if it is a repeat/reverse/main scan
  int32_t         dataBlockLoadFlag;
  SInterval       interval;     // if the upstream is an interval operator, the interval info is also kept here to get the time window to check if current data block needs to be loaded.
  SSampleExecInfo sample;       // sample execution info
  int32_t         currentGroupId;
  int32_t         currentTable;
  int8_t          scanMode;
  int8_t          noTable;
} STableScanInfo;

typedef struct STagScanInfo {
  SColumnInfo     *pCols;
  SSDataBlock     *pRes;
  SArray          *pColMatchInfo;
  int32_t          curPos;
  SReadHandle      readHandle;
  STableListInfo  *pTableList;
} STagScanInfo;

typedef struct SLastrowScanInfo {
  SSDataBlock    *pRes;
  SReadHandle     readHandle;
  void           *pLastrowReader;
  SArray         *pColMatchInfo;
  int32_t        *pSlotIds;
  SExprSupp       pseudoExprSup;
  int32_t         retrieveType;
  int32_t         currentGroupIndex;
  SSDataBlock    *pBufferredRes;
  SArray         *pUidList;
  int32_t         indexOfBufferedRes;
} SLastrowScanInfo;

typedef enum EStreamScanMode {
  STREAM_SCAN_FROM_READERHANDLE = 1,
  STREAM_SCAN_FROM_RES,
  STREAM_SCAN_FROM_UPDATERES,
  STREAM_SCAN_FROM_DATAREADER, // todo(liuyao) delete it
  STREAM_SCAN_FROM_DATAREADER_RETRIEVE,
  STREAM_SCAN_FROM_DATAREADER_RANGE,
} EStreamScanMode;

typedef struct SCatchSupporter {
  SHashObj*      pWindowHashTable;  // quick locate the window object for each window
  SDiskbasedBuf* pDataBuf;          // buffer based on blocked-wised disk file
  int32_t        keySize;
  int64_t*       pKeyBuf;
} SCatchSupporter;

typedef struct SStreamAggSupporter {
  SHashObj*      pResultRows;
  SArray*        pCurWins;
  int32_t        valueSize;
  int32_t        keySize;
  char*          pKeyBuf;              // window key buffer
  SDiskbasedBuf* pResultBuf;           // query result buffer based on blocked-wised disk file
  int32_t        resultRowSize;        // the result buffer size for each result row, with the meta data size for each row
  SArray*        pScanWindow;
} SStreamAggSupporter;

typedef struct SessionWindowSupporter {
  SStreamAggSupporter* pStreamAggSup;
  int64_t              gap;
  uint8_t              parentType;
} SessionWindowSupporter;

typedef struct STimeWindowSupp {
  int8_t           calTrigger;
  int64_t          waterMark;
  TSKEY            maxTs;
  SColumnInfoData  timeWindowData;     // query time window info for scalar function execution.
} STimeWindowAggSupp;

typedef struct SStreamScanInfo {
  uint64_t    tableUid;  // queried super table uid
  SExprInfo*  pPseudoExpr;
  int32_t     numOfPseudoExpr;
  int32_t     primaryTsIndex;  // primary time stamp slot id
  SReadHandle readHandle;
  SInterval   interval;       // if the upstream is an interval operator, the interval info is also kept here.
  SArray*     pColMatchInfo;  //
  SNode*      pCondition;

  SArray*      pBlockLists;  // multiple SSDatablock.
  SSDataBlock* pRes;         // result SSDataBlock
  SSDataBlock* pUpdateRes;   // update SSDataBlock
  int32_t      updateResIndex;
  int32_t      blockType;        // current block type
  int32_t      validBlockIndex;  // Is current data has returned?
  uint64_t     numOfExec;        // execution times
  STqReader*   tqReader;

  int32_t      tsArrayIndex;
  SArray*      tsArray;
  uint64_t     groupId;
  SUpdateInfo* pUpdateInfo;

  EStreamScanMode        scanMode;
  SOperatorInfo*         pStreamScanOp;
  SOperatorInfo*         pTableScanOp;
  SArray*                childIds;
  SessionWindowSupporter sessionSup;
  bool                   assignBlockUid;  // assign block uid to groupId, temporarily used for generating rollup SMA.
  int32_t                scanWinIndex;    // for state operator
  int32_t                pullDataResIndex;
  SSDataBlock*           pPullDataRes;    // pull data SSDataBlock
  SSDataBlock*           pDeleteDataRes;  // delete data SSDataBlock
  int32_t                deleteDataIndex;
  STimeWindow            updateWin;
  STimeWindowAggSupp     twAggSup;

  // status for tmq
  // SSchemaWrapper schema;
  STqOffset              offset;
  SNode*                 pTagCond;
  SNode*                 pTagIndexCond;
} SStreamScanInfo;

typedef struct SSysTableScanInfo {
  SRetrieveMetaTableRsp* pRsp;
  SRetrieveTableReq      req;
  SEpSet                 epSet;
  tsem_t                 ready;
  SReadHandle            readHandle;
  int32_t                accountId;
  const char*            pUser;
  bool                   showRewrite;
  SNode*                 pCondition;  // db_name filter condition, to discard data that are not in current database
  SMTbCursor*            pCur;        // cursor for iterate the local table meta store.
  SArray*                scanCols;    // SArray<int16_t> scan column id list
  SName                  name;
  SSDataBlock*           pRes;
  int64_t                numOfBlocks;  // extract basic running information.
  SLoadRemoteDataInfo    loadInfo;
} SSysTableScanInfo;

typedef struct SBlockDistInfo {
  SSDataBlock* pResBlock;
  void*        pHandle;
  SReadHandle  readHandle;
  uint64_t     uid;        // table uid
} SBlockDistInfo;

// todo remove this
typedef struct SOptrBasicInfo {
  SResultRowInfo  resultRowInfo;
  SSDataBlock*    pRes;
} SOptrBasicInfo;

typedef struct SAggSupporter {
  SHashObj*      pResultRowHashTable;  // quick locate the window object for each result
  char*          keyBuf;               // window key buffer
  SDiskbasedBuf* pResultBuf;           // query result buffer based on blocked-wised disk file
  int32_t        resultRowSize;        // the result buffer size for each result row, with the meta data size for each row
} SAggSupporter;

typedef struct SIntervalAggOperatorInfo {
  // SOptrBasicInfo should be first, SAggSupporter should be second for stream encode
  SOptrBasicInfo     binfo;              // basic info
  SAggSupporter      aggSup;             // aggregate supporter
  SExprSupp          scalarSupp;         // supporter for perform scalar function
  SGroupResInfo      groupResInfo;       // multiple results build supporter
  SInterval          interval;           // interval info
  int32_t            primaryTsIndex;     // primary time stamp slot id from result of downstream operator.
  STimeWindow        win;                // query time range
  bool               timeWindowInterpo;  // interpolation needed or not
  SArray*            pInterpCols;        // interpolation columns
  int32_t            order;              // current SSDataBlock scan order
  EOPTR_EXEC_MODEL   execModel;          // operator execution model [batch model|stream model]
  STimeWindowAggSupp twAggSup;
  bool               invertible;
  SArray*            pPrevValues;        //  SArray<SGroupKeys> used to keep the previous not null value for interpolation.
  bool               ignoreExpiredData;
  SArray*            pRecycledPages;
  SArray*            pDelWins;           // SWinRes
  int32_t            delIndex;
  SSDataBlock*       pDelRes;

  SNode *pCondition;
} SIntervalAggOperatorInfo;

typedef struct SMergeAlignedIntervalAggOperatorInfo {
  SIntervalAggOperatorInfo *intervalAggOperatorInfo;

  bool         hasGroupId;
  uint64_t     groupId;
  SSDataBlock* prefetchedBlock;
  bool         inputBlocksFinished;

  SNode*       pCondition;
} SMergeAlignedIntervalAggOperatorInfo;

typedef struct SStreamFinalIntervalOperatorInfo {
  // SOptrBasicInfo should be first, SAggSupporter should be second for stream encode
  SOptrBasicInfo     binfo;              // basic info
  SAggSupporter      aggSup;             // aggregate supporter
  SExprSupp          scalarSupp;         // supporter for perform scalar function
  SGroupResInfo      groupResInfo;       // multiple results build supporter
  SInterval          interval;           // interval info
  int32_t            primaryTsIndex;     // primary time stamp slot id from result of downstream operator.
  int32_t            order;              // current SSDataBlock scan order
  STimeWindowAggSupp twAggSup;
  SArray*            pChildren;
  SSDataBlock*       pUpdateRes;
  bool               returnUpdate;
  SPhysiNode*        pPhyNode;           // create new child
  bool               isFinal;
  SHashObj*          pPullDataMap;
  SArray*            pPullWins;          // SPullWindowInfo
  int32_t            pullIndex;
  SSDataBlock*       pPullDataRes;
  bool               ignoreExpiredData;
  SArray*            pRecycledPages;
  SArray*            pDelWins;           // SWinRes
  int32_t            delIndex;
  SSDataBlock*       pDelRes;
} SStreamFinalIntervalOperatorInfo;

typedef struct SAggOperatorInfo {
  // SOptrBasicInfo should be first, SAggSupporter should be second for stream encode
  SOptrBasicInfo     binfo;
  SAggSupporter      aggSup;

  STableQueryInfo   *current;
  uint64_t           groupId;
  SGroupResInfo      groupResInfo;
  SExprSupp          scalarExprSup;

  SNode             *pCondition;
} SAggOperatorInfo;

typedef struct SProjectOperatorInfo {
  // SOptrBasicInfo should be first, SAggSupporter should be second for stream encode
  SOptrBasicInfo     binfo;
  SAggSupporter      aggSup;
  SNode*             pFilterNode;  // filter info, which is push down by optimizer
  SSDataBlock*       existDataBlock;
  SArray*            pPseudoColInfo;
  SLimitInfo         limitInfo;
} SProjectOperatorInfo;

typedef struct SIndefOperatorInfo {
  SOptrBasicInfo     binfo;
  SAggSupporter      aggSup;
  SArray*            pPseudoColInfo;
  SExprSupp          scalarSup;
  SNode*             pCondition;
  uint64_t           groupId;

  SSDataBlock*       pNextGroupRes;
} SIndefOperatorInfo;

typedef struct SFillOperatorInfo {
  struct SFillInfo* pFillInfo;
  SSDataBlock*      pRes;
  int64_t           totalInputRows;
  void**            p;
  SSDataBlock*      existNewGroupBlock;
  bool              multigroupResult;
  STimeWindow       win;
  SNode*            pCondition;
  SArray*           pColMatchColInfo;
  int32_t           primaryTsCol;
  uint64_t          curGroupId;       // current handled group id
} SFillOperatorInfo;

typedef struct SGroupbyOperatorInfo {
  // SOptrBasicInfo should be first, SAggSupporter should be second for stream encode
  SOptrBasicInfo  binfo;
  SAggSupporter   aggSup;

  SArray*         pGroupCols;     // group by columns, SArray<SColumn>
  SArray*         pGroupColVals;  // current group column values, SArray<SGroupKeys>
  SNode*          pCondition;
  bool            isInit;       // denote if current val is initialized or not
  char*           keyBuf;       // group by keys for hash
  int32_t         groupKeyLen;  // total group by column width
  SGroupResInfo   groupResInfo;
  SExprSupp       scalarSup;
} SGroupbyOperatorInfo;

typedef struct SDataGroupInfo {
  uint64_t        groupId;
  int64_t         numOfRows;
  SArray*         pPageList;
} SDataGroupInfo;

// The sort in partition may be needed later.
typedef struct SPartitionOperatorInfo {
  SOptrBasicInfo binfo;
  SArray*        pGroupCols;
  SArray*        pGroupColVals;  // current group column values, SArray<SGroupKeys>
  char*          keyBuf;         // group by keys for hash
  int32_t        groupKeyLen;    // total group by column width
  SHashObj*      pGroupSet;      // quick locate the window object for each result

  SDiskbasedBuf* pBuf;          // query result buffer based on blocked-wised disk file
  int32_t        rowCapacity;   // maximum number of rows for each buffer page
  int32_t*       columnOffset;  // start position for each column data
  SArray*        sortedGroupArray;   // SDataGroupInfo sorted by group id
  int32_t        groupIndex;  // group index
  int32_t        pageIndex;   // page index of current group
  SSDataBlock*   pUpdateRes;
  SExprSupp      scalarSup;
} SPartitionOperatorInfo;

typedef struct SWindowRowsSup {
  STimeWindow win;
  TSKEY       prevTs;
  int32_t     startRowIndex;
  int32_t     numOfRows;
} SWindowRowsSup;

typedef struct SSessionAggOperatorInfo {
  // SOptrBasicInfo should be first, SAggSupporter should be second for stream encode
  SOptrBasicInfo     binfo;
  SAggSupporter      aggSup;

  SGroupResInfo      groupResInfo;
  SWindowRowsSup     winSup;
  bool               reptScan;        // next round scan
  int64_t            gap;             // session window gap
  int32_t            tsSlotId;        // primary timestamp slot id
  STimeWindowAggSupp twAggSup;
  const SNode* pCondition;
} SSessionAggOperatorInfo;

typedef struct SResultWindowInfo {
  SResultRowPosition pos;
  STimeWindow win;
  bool isOutput;
  bool isClosed;
} SResultWindowInfo;

typedef struct SStateWindowInfo {
  SResultWindowInfo winInfo;
  SStateKeys stateKey;
} SStateWindowInfo;

typedef struct SStreamSessionAggOperatorInfo {
  SOptrBasicInfo       binfo;
  SStreamAggSupporter  streamAggSup;
  SExprSupp            scalarSupp;         // supporter for perform scalar function
  SGroupResInfo        groupResInfo;
  int64_t              gap;             // session window gap
  int32_t              primaryTsIndex;  // primary timestamp slot id
  int32_t              endTsIndex;      // window end timestamp slot id
  int32_t              order;           // current SSDataBlock scan order
  STimeWindowAggSupp   twAggSup;
  SSDataBlock*         pWinBlock;       // window result
  SqlFunctionCtx*      pDummyCtx;       // for combine
  SSDataBlock*         pDelRes;         // delete result
  bool                 returnDelete;
  SSDataBlock*         pUpdateRes;      // update window
  SHashObj*            pStDeleted;
  void*                pDelIterator;
  SArray*              pChildren;       // cache for children's result; final stream operator
  SPhysiNode*          pPhyNode;           // create new child
  bool                 isFinal;
  bool                 ignoreExpiredData;
} SStreamSessionAggOperatorInfo;

typedef struct STimeSliceOperatorInfo {
  SSDataBlock*   pRes;
  STimeWindow    win;
  SInterval      interval;
  int64_t        current;
  SArray*        pPrevRow;      // SArray<SGroupValue>
  int32_t        fillType;      // fill type
  SColumn        tsCol;         // primary timestamp column
  SExprSupp      scalarSup;     // scalar calculation
  struct SFillColInfo*  pFillColInfo;  // fill column info
} STimeSliceOperatorInfo;

typedef struct SStateWindowOperatorInfo {
  // SOptrBasicInfo should be first, SAggSupporter should be second for stream encode
  SOptrBasicInfo     binfo;
  SAggSupporter      aggSup;

  SGroupResInfo      groupResInfo;
  SWindowRowsSup     winSup;
  SColumn            stateCol;  // start row index
  bool               hasKey;
  SStateKeys         stateKey;
  int32_t            tsSlotId;  // primary timestamp column slot id
  STimeWindowAggSupp twAggSup;
  //  bool             reptScan;
  const SNode* pCondition;
} SStateWindowOperatorInfo;

typedef struct SStreamStateAggOperatorInfo {
  SOptrBasicInfo       binfo;
  SStreamAggSupporter  streamAggSup;
  SExprSupp            scalarSupp;      // supporter for perform scalar function
  SGroupResInfo        groupResInfo;
  int32_t              primaryTsIndex;  // primary timestamp slot id
  int32_t              order;           // current SSDataBlock scan order
  STimeWindowAggSupp   twAggSup;
  SColumn              stateCol;
  SqlFunctionCtx*      pDummyCtx;       // for combine
  SSDataBlock*         pDelRes;
  SHashObj*            pSeDeleted;
  void*                pDelIterator;
  SArray*              pScanWindow;
  SArray*              pChildren;       // cache for children's result;
  bool                 ignoreExpiredData;
} SStreamStateAggOperatorInfo;

typedef struct SSortedMergeOperatorInfo {
  // SOptrBasicInfo should be first, SAggSupporter should be second for stream encode
  SOptrBasicInfo   binfo;
  SAggSupporter    aggSup;

  SArray*          pSortInfo;
  int32_t          numOfSources;
  SSortHandle     *pSortHandle;
  int32_t          bufPageSize;
  uint32_t         sortBufSize;  // max buffer size for in-memory sort
  int32_t          resultRowFactor;
  bool             hasGroupVal;
  SDiskbasedBuf   *pTupleStore;  // keep the final results
  int32_t          numOfResPerPage;
  char**           groupVal;
  SArray          *groupInfo;
} SSortedMergeOperatorInfo;

typedef struct SSortOperatorInfo {
  SOptrBasicInfo binfo;
  uint32_t     sortBufSize;    // max buffer size for in-memory sort
  SArray*      pSortInfo;
  SSortHandle* pSortHandle;
  SArray*      pColMatchInfo;  // for index map from table scan output
  int32_t      bufPageSize;

  int64_t      startTs;       // sort start time
  uint64_t     sortElapsed;   // sort elapsed time, time to flush to disk not included.

  SNode*      pCondition;
} SSortOperatorInfo;

typedef struct STagFilterOperatorInfo {
  SOptrBasicInfo binfo;
} STagFilterOperatorInfo;

typedef struct SJoinOperatorInfo {
  SSDataBlock       *pRes;
  int32_t            joinType;

  SSDataBlock       *pLeft;
  int32_t            leftPos;
  SColumnInfo        leftCol;

  SSDataBlock       *pRight;
  int32_t            rightPos;
  SColumnInfo        rightCol;
  SNode             *pCondAfterMerge;
} SJoinOperatorInfo;

#define OPTR_IS_OPENED(_optr)  (((_optr)->status & OP_OPENED) == OP_OPENED)
#define OPTR_SET_OPENED(_optr) ((_optr)->status |= OP_OPENED)

void doDestroyExchangeOperatorInfo(void* param);

SOperatorFpSet createOperatorFpSet(__optr_open_fn_t openFn, __optr_fn_t nextFn, __optr_fn_t streamFn,
    __optr_fn_t cleanup, __optr_close_fn_t closeFn, __optr_encode_fn_t encode,
    __optr_decode_fn_t decode, __optr_explain_fn_t explain);

int32_t operatorDummyOpenFn(SOperatorInfo* pOperator);
void    operatorDummyCloseFn(void* param, int32_t numOfCols);
int32_t appendDownstream(SOperatorInfo* p, SOperatorInfo** pDownstream, int32_t num);

void    initBasicInfo(SOptrBasicInfo* pInfo, SSDataBlock* pBlock);
void    cleanupBasicInfo(SOptrBasicInfo* pInfo);
int32_t initExprSupp(SExprSupp* pSup, SExprInfo* pExprInfo, int32_t numOfExpr);
void    cleanupExprSupp(SExprSupp* pSup);
int32_t initAggInfo(SExprSupp *pSup, SAggSupporter* pAggSup, SExprInfo* pExprInfo, int32_t numOfCols, size_t keyBufSize,
                    const char* pkey);
void    initResultSizeInfo(SOperatorInfo* pOperator, int32_t numOfRows);
void    doBuildResultDatablock(SOperatorInfo* pOperator, SOptrBasicInfo* pbInfo, SGroupResInfo* pGroupResInfo, SDiskbasedBuf* pBuf);
int32_t handleLimitOffset(SOperatorInfo *pOperator, SLimitInfo* pLimitInfo, SSDataBlock* pBlock, bool holdDataInBuf);
bool    hasLimitOffsetInfo(SLimitInfo* pLimitInfo);
void    initLimitInfo(const SNode* pLimit, const SNode* pSLimit, SLimitInfo* pLimitInfo);

void    doApplyFunctions(SExecTaskInfo* taskInfo, SqlFunctionCtx* pCtx, STimeWindow* pWin, SColumnInfoData* pTimeWindowData, int32_t offset,
                         int32_t forwardStep, TSKEY* tsCol, int32_t numOfTotal, int32_t numOfOutput, int32_t order);

int32_t extractDataBlockFromFetchRsp(SSDataBlock* pRes, SLoadRemoteDataInfo* pLoadInfo, int32_t numOfRows, char* pData,
                                  int32_t compLen, int32_t numOfOutput, int64_t startTs, uint64_t* total,
                                  SArray* pColList);
void    getAlignQueryTimeWindow(SInterval* pInterval, int32_t precision, int64_t key, STimeWindow* win);
STimeWindow getFirstQualifiedTimeWindow(int64_t ts, STimeWindow* pWindow, SInterval* pInterval, int32_t order);

int32_t getTableScanInfo(SOperatorInfo* pOperator, int32_t *order, int32_t* scanFlag);
int32_t getBufferPgSize(int32_t rowSize, uint32_t* defaultPgsz, uint32_t* defaultBufsz);

void    doSetOperatorCompleted(SOperatorInfo* pOperator);
void    doFilter(const SNode* pFilterNode, SSDataBlock* pBlock);
int32_t addTagPseudoColumnData(SReadHandle* pHandle, SExprInfo* pPseudoExpr, int32_t numOfPseudoExpr,
                               SSDataBlock* pBlock, const char* idStr);

void    cleanupAggSup(SAggSupporter* pAggSup);
void    destroyBasicOperatorInfo(void* param, int32_t numOfOutput);
void    appendOneRowToDataBlock(SSDataBlock* pBlock, STupleHandle* pTupleHandle);
void    setTbNameColData(void* pMeta, const SSDataBlock* pBlock, SColumnInfoData* pColInfoData, int32_t functionId);

int32_t doPrepareScan(SOperatorInfo* pOperator, uint64_t uid, int64_t ts);
int32_t doGetScanStatus(SOperatorInfo* pOperator, uint64_t* uid, int64_t* ts);

SSDataBlock* loadNextDataBlock(void* param);

void setResultRowInitCtx(SResultRow* pResult, SqlFunctionCtx* pCtx, int32_t numOfOutput, int32_t* rowEntryInfoOffset);

SResultRow* doSetResultOutBufByKey(SDiskbasedBuf* pResultBuf, SResultRowInfo* pResultRowInfo,
                                   char* pData, int16_t bytes, bool masterscan, uint64_t groupId,
                                   SExecTaskInfo* pTaskInfo, bool isIntervalQuery, SAggSupporter* pSup);

SOperatorInfo* createExchangeOperatorInfo(void* pTransporter, SExchangePhysiNode* pExNode, SExecTaskInfo* pTaskInfo);

SOperatorInfo* createTableScanOperatorInfo(STableScanPhysiNode* pTableScanNode, SReadHandle* pHandle, SExecTaskInfo* pTaskInfo);
SOperatorInfo* createTagScanOperatorInfo(SReadHandle* pReadHandle, STagScanPhysiNode* pPhyNode,
                                         STableListInfo* pTableListInfo, SExecTaskInfo* pTaskInfo);
SOperatorInfo* createSysTableScanOperatorInfo(void* readHandle, SSystemTableScanPhysiNode *pScanPhyNode, const char* pUser, SExecTaskInfo* pTaskInfo);

SOperatorInfo* createAggregateOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols, SSDataBlock* pResultBlock, SNode* pCondition, SExprInfo* pScalarExprInfo,
                                           int32_t numOfScalarExpr, SExecTaskInfo* pTaskInfo);

SOperatorInfo* createIndefinitOutputOperatorInfo(SOperatorInfo* downstream, SPhysiNode *pNode, SExecTaskInfo* pTaskInfo);
SOperatorInfo* createProjectOperatorInfo(SOperatorInfo* downstream, SProjectPhysiNode* pProjPhyNode, SExecTaskInfo* pTaskInfo);
SOperatorInfo* createSortOperatorInfo(SOperatorInfo* downstream, SSortPhysiNode* pSortNode, SExecTaskInfo* pTaskInfo);
SOperatorInfo* createMultiwayMergeOperatorInfo(SOperatorInfo** dowStreams, size_t numStreams, SMergePhysiNode* pMergePhysiNode, SExecTaskInfo* pTaskInfo);
SOperatorInfo* createSortedMergeOperatorInfo(SOperatorInfo** downstream, int32_t numOfDownstream, SExprInfo* pExprInfo, int32_t num, SArray* pSortInfo, SArray* pGroupInfo, SExecTaskInfo* pTaskInfo);
SOperatorInfo* createLastrowScanOperator(SLastRowScanPhysiNode* pTableScanNode, SReadHandle* readHandle, SExecTaskInfo* pTaskInfo);

SOperatorInfo* createIntervalOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols,
                                          SSDataBlock* pResBlock, SInterval* pInterval, int32_t primaryTsSlotId,
                                          STimeWindowAggSupp* pTwAggSupp, SIntervalPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo, bool isStream);

SOperatorInfo* createMergeIntervalOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols,
                                          SSDataBlock* pResBlock, SInterval* pInterval, int32_t primaryTsSlotId,
                                          SExecTaskInfo* pTaskInfo);

SOperatorInfo* createMergeAlignedIntervalOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols,
                                          SSDataBlock* pResBlock, SInterval* pInterval, int32_t primaryTsSlotId,
                                          SNode* pCondition, SExecTaskInfo* pTaskInfo);

SOperatorInfo* createStreamFinalIntervalOperatorInfo(SOperatorInfo* downstream,
    SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo, int32_t numOfChild);
SOperatorInfo* createStreamIntervalOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols,
                                                SSDataBlock* pResBlock, SInterval* pInterval, int32_t primaryTsSlotId,
                                                STimeWindowAggSupp *pTwAggSupp, SExecTaskInfo* pTaskInfo);
SOperatorInfo* createSessionAggOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols,
                                            SSDataBlock* pResBlock, int64_t gap, int32_t tsSlotId, STimeWindowAggSupp* pTwAggSupp,
                                            SNode* pCondition, SExecTaskInfo* pTaskInfo);
SOperatorInfo* createGroupOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExprInfo, int32_t numOfCols,
                                       SSDataBlock* pResultBlock, SArray* pGroupColList, SNode* pCondition,
                                       SExprInfo* pScalarExprInfo, int32_t numOfScalarExpr, SExecTaskInfo* pTaskInfo);
SOperatorInfo* createDataBlockInfoScanOperator(void* dataReader, SReadHandle* readHandle, uint64_t uid, SBlockDistScanPhysiNode* pBlockScanNode,
                                               SExecTaskInfo* pTaskInfo);

SOperatorInfo* createStreamScanOperatorInfo(SReadHandle* pHandle, STableScanPhysiNode* pTableScanNode, SNode* pTagCond,
                                            SExecTaskInfo* pTaskInfo, STimeWindowAggSupp* pTwSup);

SOperatorInfo* createFillOperatorInfo(SOperatorInfo* downstream, SFillPhysiNode* pPhyFillNode, SExecTaskInfo* pTaskInfo);

SOperatorInfo* createStatewindowOperatorInfo(SOperatorInfo* downstream, SExprInfo* pExpr, int32_t numOfCols,
                                             SSDataBlock* pResBlock, STimeWindowAggSupp *pTwAggSupp, int32_t tsSlotId,
                                             SColumn* pStateKeyCol, SNode* pCondition, SExecTaskInfo* pTaskInfo);

SOperatorInfo* createPartitionOperatorInfo(SOperatorInfo* downstream, SPartitionPhysiNode* pPartNode, SExecTaskInfo* pTaskInfo);

SOperatorInfo* createTimeSliceOperatorInfo(SOperatorInfo* downstream, SPhysiNode* pNode, /*SExprInfo* pExprInfo, int32_t numOfCols,
                                           SSDataBlock* pResultBlock, const SNodeListNode* pValNode, */SExecTaskInfo* pTaskInfo);

SOperatorInfo* createMergeJoinOperatorInfo(SOperatorInfo** pDownstream, int32_t numOfDownstream, SJoinPhysiNode* pJoinNode,
                                           SExecTaskInfo* pTaskInfo);

SOperatorInfo* createStreamSessionAggOperatorInfo(SOperatorInfo* downstream,
    SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo);
SOperatorInfo* createStreamFinalSessionAggOperatorInfo(SOperatorInfo* downstream,
    SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo, int32_t numOfChild);

SOperatorInfo* createStreamStateAggOperatorInfo(SOperatorInfo* downstream, SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo);

#if 0
SOperatorInfo* createTableSeqScanOperatorInfo(void* pTsdbReadHandle, STaskRuntimeEnv* pRuntimeEnv);
#endif

int32_t projectApplyFunctions(SExprInfo* pExpr, SSDataBlock* pResult, SSDataBlock* pSrcBlock, SqlFunctionCtx* pCtx,
                           int32_t numOfOutput, SArray* pPseudoList);

void setInputDataBlock(SOperatorInfo* pOperator, SqlFunctionCtx* pCtx, SSDataBlock* pBlock, int32_t order, int32_t scanFlag, bool createDummyCol);

bool    isTaskKilled(SExecTaskInfo* pTaskInfo);
int32_t checkForQueryBuf(size_t numOfTables);

void    setTaskKilled(SExecTaskInfo* pTaskInfo);
void    queryCostStatis(SExecTaskInfo* pTaskInfo);

void    doDestroyTask(SExecTaskInfo* pTaskInfo);
int32_t getMaximumIdleDurationSec();

/*
 * ops:     root operator
 * data:    *data save the result of encode, need to be freed by caller
 * length:  *length save the length of *data
 * nOptrWithVal: *nOptrWithVal save the number of optr with value
 * return:  result code, 0 means success
 */
int32_t encodeOperator(SOperatorInfo* ops, char** data, int32_t *length, int32_t *nOptrWithVal);

/*
 * ops:    root operator, created by caller
 * data:   save the result of decode
 * length: the length of data
 * return: result code, 0 means success
 */
int32_t decodeOperator(SOperatorInfo* ops, const char* data, int32_t length);

void    setTaskStatus(SExecTaskInfo* pTaskInfo, int8_t status);
int32_t createExecTaskInfoImpl(SSubplan* pPlan, SExecTaskInfo** pTaskInfo, SReadHandle* pHandle, uint64_t taskId,
                               const char* sql, EOPTR_EXEC_MODEL model);
int32_t createDataSinkParam(SDataSinkNode *pNode, void **pParam, qTaskInfo_t* pTaskInfo, SReadHandle* readHandle);                               
int32_t getOperatorExplainExecInfo(SOperatorInfo* operatorInfo, SExplainExecInfo** pRes, int32_t* capacity,
                                   int32_t* resNum);

int32_t aggDecodeResultRow(SOperatorInfo* pOperator, char* result);
int32_t aggEncodeResultRow(SOperatorInfo* pOperator, char** result, int32_t* length);

STimeWindow getActiveTimeWindow(SDiskbasedBuf* pBuf, SResultRowInfo* pResultRowInfo, int64_t ts, SInterval* pInterval,
                                int32_t order);
int32_t getNumOfRowsInTimeWindow(SDataBlockInfo* pDataBlockInfo, TSKEY* pPrimaryColumn, int32_t startPos, TSKEY ekey,
    __block_search_fn_t searchFn, STableQueryInfo* item, int32_t order);
int32_t binarySearchForKey(char* pValue, int num, TSKEY key, int order);
int32_t initStreamAggSupporter(SStreamAggSupporter* pSup, const char* pKey, SqlFunctionCtx* pCtx, int32_t numOfOutput,
    int32_t size);
SResultRow* getNewResultRow(SDiskbasedBuf* pResultBuf, int64_t tableGroupId, int32_t interBufSize);
SResultWindowInfo* getSessionTimeWindow(SStreamAggSupporter* pAggSup, TSKEY startTs,
    TSKEY endTs, uint64_t groupId, int64_t gap, int32_t* pIndex);
SResultWindowInfo* getCurSessionWindow(SStreamAggSupporter* pAggSup, TSKEY startTs,
    TSKEY endTs, uint64_t groupId, int64_t gap, int32_t* pIndex);
bool isInTimeWindow(STimeWindow* pWin, TSKEY ts, int64_t gap);
int32_t updateSessionWindowInfo(SResultWindowInfo* pWinInfo, TSKEY* pStartTs,
    TSKEY* pEndTs, int32_t rows, int32_t start, int64_t gap, SHashObj* pStDeleted);
bool functionNeedToExecute(SqlFunctionCtx* pCtx);
bool isCloseWindow(STimeWindow* pWin, STimeWindowAggSupp* pSup);

int32_t finalizeResultRowIntoResultDataBlock(SDiskbasedBuf* pBuf, SResultRowPosition* resultRowPosition,
                                       SqlFunctionCtx* pCtx, SExprInfo* pExprInfo, int32_t numOfExprs, const int32_t* rowCellOffset,
                                       SSDataBlock* pBlock, SExecTaskInfo* pTaskInfo);

int32_t createScanTableListInfo(SScanPhysiNode *pScanNode, SNodeList* pGroupTags, bool groupSort, SReadHandle* pHandle,
                                STableListInfo* pTableListInfo, SNode* pTagCond, SNode* pTagIndexCond, const char* idstr);

SOperatorInfo* createGroupSortOperatorInfo(SOperatorInfo* downstream, SGroupSortPhysiNode* pSortPhyNode,
                                           SExecTaskInfo* pTaskInfo);
SOperatorInfo* createTableMergeScanOperatorInfo(STableScanPhysiNode* pTableScanNode, STableListInfo *pTableListInfo,
                                                SReadHandle* readHandle, SExecTaskInfo* pTaskInfo);

void copyUpdateDataBlock(SSDataBlock* pDest, SSDataBlock* pSource, int32_t tsColIndex);

int32_t generateGroupIdMap(STableListInfo* pTableListInfo, SReadHandle* pHandle, SNodeList* groupKey);
SSDataBlock* createPullDataBlock();

#ifdef __cplusplus
}
#endif

#endif  // TDENGINE_EXECUTORIMPL_H