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173 lines
5.8 KiB
C
173 lines
5.8 KiB
C
/*-------------------------------------------------------------------------
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*
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* executor.h--
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* support for the POSTGRES executor module
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*
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: executor.h,v 1.15 1997/11/20 23:23:39 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef EXECUTOR_H
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#define EXECUTOR_H
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#include <catalog/pg_index.h>
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#include <access/itup.h>
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#include <stdio.h>
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#include <executor/execdesc.h>
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/* ----------------------------------------------------------------
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* ----------------------------------------------------------------
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*/
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/*
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* prototypes from functions in execAmi.c
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*/
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extern void
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ExecOpenScanR(Oid relOid, int nkeys, ScanKey skeys, bool isindex,
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ScanDirection dir, Relation *returnRelation,
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Pointer *returnScanDesc);
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extern void ExecCloseR(Plan *node);
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extern void ExecReScan(Plan *node, ExprContext *exprCtxt, Plan *parent);
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extern HeapScanDesc
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ExecReScanR(Relation relDesc, HeapScanDesc scanDesc,
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ScanDirection direction, int nkeys, ScanKey skeys);
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extern void ExecMarkPos(Plan *node);
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extern void ExecRestrPos(Plan *node);
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extern Relation ExecCreatR(TupleDesc tupType, Oid relationOid);
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/*
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* prototypes from functions in execJunk.c
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*/
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extern JunkFilter *ExecInitJunkFilter(List *targetList);
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extern bool
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ExecGetJunkAttribute(JunkFilter *junkfilter, TupleTableSlot *slot,
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char *attrName, Datum *value, bool *isNull);
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extern HeapTuple ExecRemoveJunk(JunkFilter *junkfilter, TupleTableSlot *slot);
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/*
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* prototypes from functions in execMain.c
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*/
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extern TupleDesc ExecutorStart(QueryDesc *queryDesc, EState *estate);
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extern TupleTableSlot *ExecutorRun(QueryDesc *queryDesc, EState *estate, int feature, int count);
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extern void ExecutorEnd(QueryDesc *queryDesc, EState *estate);
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extern HeapTuple ExecConstraints(char *caller, Relation rel, HeapTuple tuple);
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/*
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* prototypes from functions in execProcnode.c
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*/
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extern bool ExecInitNode(Plan *node, EState *estate, Plan *parent);
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extern TupleTableSlot *ExecProcNode(Plan *node, Plan *parent);
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extern int ExecCountSlotsNode(Plan *node);
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extern void ExecEndNode(Plan *node, Plan *parent);
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/*
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* prototypes from functions in execQual.c
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*/
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extern bool execConstByVal;
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extern int execConstLen;
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extern Datum
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ExecExtractResult(TupleTableSlot *slot, AttrNumber attnum,
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bool *isNull);
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extern Datum
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ExecEvalParam(Param *expression, ExprContext *econtext,
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bool *isNull);
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/* stop here */
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extern char *
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GetAttributeByNum(TupleTableSlot *slot, AttrNumber attrno, bool *isNull);
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extern char *
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GetAttributeByName(TupleTableSlot *slot, char *attname, bool *isNull);
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extern Datum
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ExecEvalExpr(Node *expression, ExprContext *econtext, bool *isNull,
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bool *isDone);
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extern bool ExecQual(List *qual, ExprContext *econtext);
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extern int ExecTargetListLength(List *targetlist);
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extern TupleTableSlot *ExecProject(ProjectionInfo *projInfo, bool *isDone);
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/*
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* prototypes from functions in execScan.c
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*/
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extern TupleTableSlot *ExecScan(Scan *node, TupleTableSlot *(*accessMtd) ());
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/*
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* prototypes from functions in execTuples.c
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*/
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extern TupleTable ExecCreateTupleTable(int initialSize);
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extern void ExecDestroyTupleTable(TupleTable table, bool shouldFree);
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extern TupleTableSlot *ExecAllocTableSlot(TupleTable table);
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extern TupleTableSlot *
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ExecStoreTuple(HeapTuple tuple,
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TupleTableSlot *slot,
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Buffer buffer,
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bool shouldFree);
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extern TupleTableSlot *ExecClearTuple(TupleTableSlot *slot);
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extern bool ExecSetSlotPolicy(TupleTableSlot *slot, bool shouldFree);
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extern TupleDesc
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ExecSetSlotDescriptor(TupleTableSlot *slot,
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TupleDesc tupdesc);
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extern void ExecSetSlotDescriptorIsNew(TupleTableSlot *slot, bool isNew);
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extern void ExecIncrSlotBufferRefcnt(TupleTableSlot *slot);
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extern bool TupIsNull(TupleTableSlot *slot);
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extern void ExecInitResultTupleSlot(EState *estate, CommonState *commonstate);
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extern void
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ExecInitScanTupleSlot(EState *estate,
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CommonScanState *commonscanstate);
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extern void ExecInitMarkedTupleSlot(EState *estate, MergeJoinState *mergestate);
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extern void ExecInitOuterTupleSlot(EState *estate, HashJoinState *hashstate);
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extern TupleDesc ExecGetTupType(Plan *node);
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extern TupleDesc ExecTypeFromTL(List *targetList);
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/*
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* prototypes from functions in execTuples.c
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*/
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extern void ResetTupleCount(void);
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extern void
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ExecAssignNodeBaseInfo(EState *estate, CommonState *basenode,
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Plan *parent);
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extern void ExecAssignExprContext(EState *estate, CommonState *commonstate);
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extern void
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ExecAssignResultType(CommonState *commonstate,
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TupleDesc tupDesc);
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extern void
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ExecAssignResultTypeFromOuterPlan(Plan *node,
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CommonState *commonstate);
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extern void ExecAssignResultTypeFromTL(Plan *node, CommonState *commonstate);
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extern TupleDesc ExecGetResultType(CommonState *commonstate);
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extern void ExecAssignProjectionInfo(Plan *node, CommonState *commonstate);
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extern void ExecFreeProjectionInfo(CommonState *commonstate);
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extern TupleDesc ExecGetScanType(CommonScanState *csstate);
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extern void
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ExecAssignScanType(CommonScanState *csstate,
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TupleDesc tupDesc);
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extern void
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ExecAssignScanTypeFromOuterPlan(Plan *node,
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CommonScanState *csstate);
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extern AttributeTupleForm ExecGetTypeInfo(Relation relDesc);
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extern void
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ExecOpenIndices(Oid resultRelationOid,
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RelationInfo *resultRelationInfo);
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extern void ExecCloseIndices(RelationInfo *resultRelationInfo);
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extern void
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ExecInsertIndexTuples(TupleTableSlot *slot, ItemPointer tupleid,
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EState *estate, bool is_update);
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extern void resetVarAttrLenForCreateTable(TupleDesc tupType);
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extern void
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setVarAttrLenForCreateTable(TupleDesc tupType,
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List *targetList, List *rangeTable);
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/* ----------------------------------------------------------------
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* the end
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* ----------------------------------------------------------------
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*/
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#endif /* EXECUTOR_H */
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