parser.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/>.
 */

#ifndef _TD_PARSER_H_
#define _TD_PARSER_H_

#ifdef __cplusplus
extern "C" {
#endif

#include "query.h"
#include "querynodes.h"

struct SCatalogReq;
struct SMetaData;

typedef struct SStmtCallback {
  TAOS_STMT* pStmt;
  int32_t (*getTbNameFn)(TAOS_STMT*, char**);
  int32_t (*setInfoFn)(TAOS_STMT*, STableMeta*, void*, char*, bool, SHashObj*, SHashObj*);
  int32_t (*getExecInfoFn)(TAOS_STMT*, SHashObj**, SHashObj**);
} SStmtCallback;

typedef struct SParseContext {
  uint64_t         requestId;
  int64_t          requestRid;
  int32_t          acctId;
  const char*      db;
  bool             topicQuery;
  void*            pTransporter;
  SEpSet           mgmtEpSet;
  const char*      pSql;    // sql string
  size_t           sqlLen;  // length of the sql string
  char*            pMsg;    // extended error message if exists to help identifying the problem in sql statement.
  int32_t          msgLen;  // max length of the msg
  struct SCatalog* pCatalog;
  SStmtCallback*   pStmtCb;
  const char*      pUser;
  bool             isSuperUser;
  bool             async;
  int8_t           schemalessType;
  const char*      svrVer;
  bool             nodeOffline;
} SParseContext;

int32_t qParseSql(SParseContext* pCxt, SQuery** pQuery);
bool    qIsInsertValuesSql(const char* pStr, size_t length);

// for async mode
int32_t qParseSqlSyntax(SParseContext* pCxt, SQuery** pQuery, struct SCatalogReq* pCatalogReq);
int32_t qAnalyseSqlSemantic(SParseContext* pCxt, const struct SCatalogReq* pCatalogReq,
                            const struct SMetaData* pMetaData, SQuery* pQuery);

void qDestroyQuery(SQuery* pQueryNode);

int32_t qExtractResultSchema(const SNode* pRoot, int32_t* numOfCols, SSchema** pSchema);
int32_t qSetSTableIdForRsma(SNode* pStmt, int64_t uid);
void    qCleanupKeywordsTable();

int32_t     qBuildStmtOutput(SQuery* pQuery, SHashObj* pVgHash, SHashObj* pBlockHash);
int32_t     qResetStmtDataBlock(void* block, bool keepBuf);
int32_t     qCloneStmtDataBlock(void** pDst, void* pSrc);
void        qFreeStmtDataBlock(void* pDataBlock);
int32_t     qRebuildStmtDataBlock(void** pDst, void* pSrc, uint64_t uid, int32_t vgId);
void        qDestroyStmtDataBlock(void* pBlock);
STableMeta* qGetTableMetaInDataBlock(void* pDataBlock);

int32_t qStmtBindParams(SQuery* pQuery, TAOS_MULTI_BIND* pParams, int32_t colIdx);
int32_t qStmtParseQuerySql(SParseContext* pCxt, SQuery* pQuery);
int32_t qBindStmtColsValue(void* pBlock, TAOS_MULTI_BIND* bind, char* msgBuf, int32_t msgBufLen);
int32_t qBindStmtSingleColValue(void* pBlock, TAOS_MULTI_BIND* bind, char* msgBuf, int32_t msgBufLen, int32_t colIdx,
                                int32_t rowNum);
int32_t qBuildStmtColFields(void* pDataBlock, int32_t* fieldNum, TAOS_FIELD_E** fields);
int32_t qBuildStmtTagFields(void* pBlock, void* boundTags, int32_t* fieldNum, TAOS_FIELD_E** fields);
int32_t qBindStmtTagsValue(void* pBlock, void* boundTags, int64_t suid, char* tName, TAOS_MULTI_BIND* bind,
                           char* msgBuf, int32_t msgBufLen);
void    destroyBoundColumnInfo(void* pBoundInfo);
int32_t qCreateSName(SName* pName, const char* pTableName, int32_t acctId, char* dbName, char* msgBuf,
                     int32_t msgBufLen);

void*   smlInitHandle(SQuery* pQuery);
void    smlDestroyHandle(void* pHandle);
int32_t smlBindData(void* handle, SArray* tags, SArray* colsSchema, SArray* cols, bool format, STableMeta* pTableMeta,
                    char* tableName, char* msgBuf, int16_t msgBufLen);
int32_t smlBuildOutput(void* handle, SHashObj* pVgHash);

#ifdef __cplusplus
}
#endif

#endif /*_TD_PARSER_H_*/