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homework-jianmu/include/libs/function/functionMgt.h

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/*
* 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_FUNCTION_MGT_H_
#define _TD_FUNCTION_MGT_H_
#ifdef __cplusplus
extern "C" {
#endif
#include "function.h"
#include "querynodes.h"
#define FUNC_AGGREGATE_UDF_ID 5001
#define FUNC_SCALAR_UDF_ID 5002
typedef enum EFunctionType {
// aggregate function
FUNCTION_TYPE_APERCENTILE = 1,
FUNCTION_TYPE_AVG,
FUNCTION_TYPE_COUNT,
FUNCTION_TYPE_ELAPSED,
FUNCTION_TYPE_IRATE,
FUNCTION_TYPE_LAST_ROW,
FUNCTION_TYPE_MAX,
FUNCTION_TYPE_MIN,
FUNCTION_TYPE_MODE,
FUNCTION_TYPE_PERCENTILE,
FUNCTION_TYPE_SPREAD,
FUNCTION_TYPE_STDDEV,
FUNCTION_TYPE_LEASTSQUARES,
FUNCTION_TYPE_SUM,
FUNCTION_TYPE_TWA,
FUNCTION_TYPE_HISTOGRAM,
FUNCTION_TYPE_HYPERLOGLOG,
// nonstandard SQL function
FUNCTION_TYPE_BOTTOM = 500,
FUNCTION_TYPE_CSUM,
FUNCTION_TYPE_DERIVATIVE,
FUNCTION_TYPE_DIFF,
FUNCTION_TYPE_FIRST,
FUNCTION_TYPE_INTERP,
FUNCTION_TYPE_LAST,
FUNCTION_TYPE_MAVG,
FUNCTION_TYPE_SAMPLE,
FUNCTION_TYPE_TAIL,
FUNCTION_TYPE_TOP,
FUNCTION_TYPE_UNIQUE,
FUNCTION_TYPE_STATE_COUNT,
FUNCTION_TYPE_STATE_DURATION,
// math function
FUNCTION_TYPE_ABS = 1000,
FUNCTION_TYPE_LOG,
FUNCTION_TYPE_POW,
FUNCTION_TYPE_SQRT,
FUNCTION_TYPE_CEIL,
FUNCTION_TYPE_FLOOR,
FUNCTION_TYPE_ROUND,
FUNCTION_TYPE_SIN,
FUNCTION_TYPE_COS,
FUNCTION_TYPE_TAN,
FUNCTION_TYPE_ASIN,
FUNCTION_TYPE_ACOS,
FUNCTION_TYPE_ATAN,
// string function
FUNCTION_TYPE_LENGTH = 1500,
FUNCTION_TYPE_CHAR_LENGTH,
FUNCTION_TYPE_CONCAT,
FUNCTION_TYPE_CONCAT_WS,
FUNCTION_TYPE_LOWER,
FUNCTION_TYPE_UPPER,
FUNCTION_TYPE_LTRIM,
FUNCTION_TYPE_RTRIM,
FUNCTION_TYPE_SUBSTR,
// conversion function
FUNCTION_TYPE_CAST = 2000,
FUNCTION_TYPE_TO_ISO8601,
FUNCTION_TYPE_TO_UNIXTIMESTAMP,
FUNCTION_TYPE_TO_JSON,
// date and time function
FUNCTION_TYPE_NOW = 2500,
FUNCTION_TYPE_TIMEDIFF,
FUNCTION_TYPE_TIMETRUNCATE,
FUNCTION_TYPE_TIMEZONE,
FUNCTION_TYPE_TODAY,
// system function
FUNCTION_TYPE_DATABASE = 3000,
FUNCTION_TYPE_CLIENT_VERSION,
FUNCTION_TYPE_SERVER_VERSION,
FUNCTION_TYPE_SERVER_STATUS,
FUNCTION_TYPE_CURRENT_USER,
FUNCTION_TYPE_USER,
// pseudo column function
FUNCTION_TYPE_ROWTS = 3500,
FUNCTION_TYPE_TBNAME,
FUNCTION_TYPE_QSTART,
FUNCTION_TYPE_QEND,
FUNCTION_TYPE_QDURATION,
FUNCTION_TYPE_WSTART,
FUNCTION_TYPE_WEND,
FUNCTION_TYPE_WDURATION,
FUNCTION_TYPE_IROWTS,
FUNCTION_TYPE_ISFILLED,
FUNCTION_TYPE_TAGS,
FUNCTION_TYPE_TBUID,
FUNCTION_TYPE_VGID,
// internal function
FUNCTION_TYPE_SELECT_VALUE = 3750,
FUNCTION_TYPE_BLOCK_DIST, // block distribution aggregate function
FUNCTION_TYPE_BLOCK_DIST_INFO, // block distribution pseudo column function
FUNCTION_TYPE_TO_COLUMN,
FUNCTION_TYPE_GROUP_KEY,
FUNCTION_TYPE_CACHE_LAST_ROW,
FUNCTION_TYPE_CACHE_LAST,
FUNCTION_TYPE_TABLE_COUNT,
// distributed splitting functions
FUNCTION_TYPE_APERCENTILE_PARTIAL = 4000,
FUNCTION_TYPE_APERCENTILE_MERGE,
FUNCTION_TYPE_SPREAD_PARTIAL,
FUNCTION_TYPE_SPREAD_MERGE,
FUNCTION_TYPE_HISTOGRAM_PARTIAL,
FUNCTION_TYPE_HISTOGRAM_MERGE,
FUNCTION_TYPE_HYPERLOGLOG_PARTIAL,
FUNCTION_TYPE_HYPERLOGLOG_MERGE,
FUNCTION_TYPE_ELAPSED_PARTIAL,
FUNCTION_TYPE_ELAPSED_MERGE,
FUNCTION_TYPE_TOP_PARTIAL,
FUNCTION_TYPE_TOP_MERGE,
FUNCTION_TYPE_BOTTOM_PARTIAL,
FUNCTION_TYPE_BOTTOM_MERGE,
FUNCTION_TYPE_FIRST_PARTIAL,
FUNCTION_TYPE_FIRST_MERGE,
FUNCTION_TYPE_LAST_PARTIAL,
FUNCTION_TYPE_LAST_MERGE,
FUNCTION_TYPE_AVG_PARTIAL,
FUNCTION_TYPE_AVG_MERGE,
FUNCTION_TYPE_STDDEV_PARTIAL,
FUNCTION_TYPE_STDDEV_MERGE,
FUNCTION_TYPE_IRATE_PARTIAL,
FUNCTION_TYPE_IRATE_MERGE,
// geometry functions
FUNCTION_TYPE_GEOM_FROM_TEXT = 4250,
FUNCTION_TYPE_AS_TEXT,
FUNCTION_TYPE_MAKE_POINT,
FUNCTION_TYPE_INTERSECTS,
FUNCTION_TYPE_EQUALS,
FUNCTION_TYPE_TOUCHES,
FUNCTION_TYPE_COVERS,
FUNCTION_TYPE_CONTAINS,
FUNCTION_TYPE_CONTAINS_PROPERLY,
// user defined funcion
FUNCTION_TYPE_UDF = 10000
} EFunctionType;
typedef enum EFuncReturnRows {
FUNC_RETURN_ROWS_NORMAL = 1,
FUNC_RETURN_ROWS_INDEFINITE,
FUNC_RETURN_ROWS_N,
FUNC_RETURN_ROWS_N_MINUS_1
} EFuncReturnRows;
struct SqlFunctionCtx;
struct SResultRowEntryInfo;
struct STimeWindow;
int32_t fmFuncMgtInit();
void fmFuncMgtDestroy();
int32_t fmGetFuncInfo(SFunctionNode* pFunc, char* pMsg, int32_t msgLen);
EFuncReturnRows fmGetFuncReturnRows(SFunctionNode* pFunc);
bool fmIsBuiltinFunc(const char* pFunc);
EFunctionType fmGetFuncType(const char* pFunc);
bool fmIsAggFunc(int32_t funcId);
bool fmIsScalarFunc(int32_t funcId);
bool fmIsVectorFunc(int32_t funcId);
bool fmIsIndefiniteRowsFunc(int32_t funcId);
bool fmIsStringFunc(int32_t funcId);
bool fmIsDateTimeFunc(int32_t funcId);
bool fmIsSelectFunc(int32_t funcId);
bool fmIsTimelineFunc(int32_t funcId);
bool fmIsTimeorderFunc(int32_t funcId);
bool fmIsPseudoColumnFunc(int32_t funcId);
bool fmIsScanPseudoColumnFunc(int32_t funcId);
bool fmIsWindowPseudoColumnFunc(int32_t funcId);
bool fmIsWindowClauseFunc(int32_t funcId);
bool fmIsSpecialDataRequiredFunc(int32_t funcId);
bool fmIsDynamicScanOptimizedFunc(int32_t funcId);
bool fmIsMultiResFunc(int32_t funcId);
bool fmIsRepeatScanFunc(int32_t funcId);
bool fmIsUserDefinedFunc(int32_t funcId);
bool fmIsDistExecFunc(int32_t funcId);
bool fmIsForbidFillFunc(int32_t funcId);
bool fmIsForbidStreamFunc(int32_t funcId);
bool fmIsForbidSysTableFunc(int32_t funcId);
bool fmIsIntervalInterpoFunc(int32_t funcId);
bool fmIsInterpFunc(int32_t funcId);
bool fmIsLastRowFunc(int32_t funcId);
bool fmIsNotNullOutputFunc(int32_t funcId);
bool fmIsSelectValueFunc(int32_t funcId);
bool fmIsSystemInfoFunc(int32_t funcId);
bool fmIsImplicitTsFunc(int32_t funcId);
bool fmIsClientPseudoColumnFunc(int32_t funcId);
bool fmIsMultiRowsFunc(int32_t funcId);
bool fmIsKeepOrderFunc(int32_t funcId);
bool fmIsCumulativeFunc(int32_t funcId);
bool fmIsInterpPseudoColumnFunc(int32_t funcId);
bool fmIsGroupKeyFunc(int32_t funcId);
bool fmIsBlockDistFunc(int32_t funcId);
void getLastCacheDataType(SDataType* pType);
SFunctionNode* createFunction(const char* pName, SNodeList* pParameterList);
int32_t fmGetDistMethod(const SFunctionNode* pFunc, SFunctionNode** pPartialFunc, SFunctionNode** pMergeFunc);
typedef enum EFuncDataRequired {
FUNC_DATA_REQUIRED_DATA_LOAD = 1,
FUNC_DATA_REQUIRED_SMA_LOAD,
FUNC_DATA_REQUIRED_NOT_LOAD,
FUNC_DATA_REQUIRED_FILTEROUT,
FUNC_DATA_REQUIRED_ALL_FILTEROUT,
} EFuncDataRequired;
EFuncDataRequired fmFuncDataRequired(SFunctionNode* pFunc, STimeWindow* pTimeWindow);
EFuncDataRequired fmFuncDynDataRequired(int32_t funcId, void* pRes, STimeWindow* pTimeWindow);
int32_t fmGetFuncExecFuncs(int32_t funcId, SFuncExecFuncs* pFpSet);
int32_t fmGetScalarFuncExecFuncs(int32_t funcId, SScalarFuncExecFuncs* pFpSet);
int32_t fmGetUdafExecFuncs(int32_t funcId, SFuncExecFuncs* pFpSet);
int32_t fmSetInvertFunc(int32_t funcId, SFuncExecFuncs* pFpSet);
int32_t fmSetNormalFunc(int32_t funcId, SFuncExecFuncs* pFpSet);
bool fmIsInvertible(int32_t funcId);
char* fmGetFuncName(int32_t funcId);
#ifdef __cplusplus
}
#endif
#endif // _TD_FUNCTION_MGT_H_
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