1996-07-09 08:22:35 +02:00
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/*-------------------------------------------------------------------------
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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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1996-10-31 10:51:30 +01:00
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* $Id: executor.h,v 1.2 1996/10/31 09:48:30 scrappy Exp $
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1996-07-09 08:22:35 +02:00
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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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/* ----------------------------------------------------------------
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* #includes
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* ----------------------------------------------------------------
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*/
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#include <stdio.h>
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#include <string.h>
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#include "nodes/pg_list.h"
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/* ----------------
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* executor debugging definitions are kept in a separate file
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* so people can customize what debugging they want to see and not
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* have this information clobbered every time a new version of
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* executor.h is checked in -cim 10/26/89
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* ----------------
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*/
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#include "executor/execdebug.h"
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#include "access/heapam.h"
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#include "access/htup.h"
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#include "access/istrat.h"
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#include "access/itup.h"
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#include "access/skey.h"
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#include "utils/tqual.h"
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#include "catalog/catname.h"
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#include "utils/syscache.h"
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#include "executor/execdefs.h"
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#include "executor/tuptable.h"
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#include "nodes/parsenodes.h"
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#include "storage/buf.h"
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#include "miscadmin.h"
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#include "fmgr.h"
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#include "utils/elog.h"
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#include "utils/mcxt.h"
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#include "utils/memutils.h"
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#include "utils/rel.h"
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#include "catalog/pg_index.h"
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#include "catalog/pg_proc.h"
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#include "catalog/pg_type.h"
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#include "catalog/pg_aggregate.h"
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#include "access/printtup.h"
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#include "nodes/primnodes.h"
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#include "nodes/plannodes.h"
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#include "nodes/execnodes.h"
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#include "tcop/dest.h"
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#include "storage/smgr.h"
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#include "access/genam.h"
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#include "executor/execdesc.h"
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/*
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* prototypes from functions in execAmi.c
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*/
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extern void ExecOpenScanR(Oid relOid, int nkeys, ScanKey skeys, bool isindex,
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ScanDirection dir, TimeQual timeRange,
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Relation *returnRelation, Pointer *returnScanDesc);
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extern Relation ExecOpenR(Oid relationOid, bool isindex);
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extern Pointer ExecBeginScan(Relation relation, int nkeys, ScanKey skeys,
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bool isindex, ScanDirection dir, TimeQual time_range);
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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 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 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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/*
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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 ExecExtractResult(TupleTableSlot *slot, AttrNumber attnum,
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bool *isNull);
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extern Datum ExecEvalVar(Var *variable, ExprContext *econtext, bool *isNull);
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extern Datum ExecEvalParam(Param *expression, ExprContext *econtext,
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bool *isNull);
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extern char *GetAttributeByNum(TupleTableSlot *slot, AttrNumber attrno,
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bool *isNull);
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extern char *att_by_num(TupleTableSlot *slot, AttrNumber attrno,
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bool *isNull);
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/* stop here */
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extern char *GetAttributeByName(TupleTableSlot *slot, char *attname,
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bool *isNull);
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extern char *att_by_name(TupleTableSlot *slot, char *attname, bool *isNull);
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extern void ExecEvalFuncArgs(FunctionCachePtr fcache, ExprContext *econtext,
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List *argList, Datum argV[], bool *argIsDone);
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extern Datum ExecMakeFunctionResult(Node *node, List *arguments,
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ExprContext *econtext, bool *isNull, bool *isDone);
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extern Datum ExecEvalOper(Expr *opClause, ExprContext *econtext,
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bool *isNull);
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extern Datum ExecEvalFunc(Expr *funcClause, ExprContext *econtext,
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bool *isNull, bool *isDone);
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extern Datum ExecEvalNot(Expr *notclause, ExprContext *econtext, bool *isNull);
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extern Datum ExecEvalOr(Expr *orExpr, ExprContext *econtext, bool *isNull);
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extern Datum ExecEvalAnd(Expr *andExpr, ExprContext *econtext, bool *isNull);
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extern Datum ExecEvalExpr(Node *expression, ExprContext *econtext, bool *isNull,
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bool *isDone);
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extern bool ExecQualClause(Node *clause, ExprContext *econtext);
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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* 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 ExecSlotPolicy(TupleTableSlot *slot);
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extern bool ExecSetSlotPolicy(TupleTableSlot *slot, bool shouldFree);
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extern TupleDesc 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 TupleDesc ExecSetNewSlotDescriptor(TupleTableSlot *slot,
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TupleDesc tupdesc);
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extern Buffer ExecSetSlotBuffer(TupleTableSlot *slot, Buffer b);
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extern void ExecIncrSlotBufferRefcnt(TupleTableSlot *slot);
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extern bool TupIsNull(TupleTableSlot* slot);
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extern bool ExecSlotDescriptorIsNew(TupleTableSlot *slot);
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extern void ExecInitResultTupleSlot(EState *estate, CommonState *commonstate);
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extern void 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 void ExecInitHashTupleSlot(EState *estate, HashJoinState *hashstate);
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extern TupleTableSlot *NodeGetResultTupleSlot(Plan *node);
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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();
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extern void DisplayTupleCount(FILE *statfp);
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extern void 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 ExecAssignResultType(CommonState *commonstate,
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TupleDesc tupDesc);
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extern void 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 ExecFreeResultType(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 ExecFreeScanType(CommonScanState *csstate);
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extern void ExecAssignScanType(CommonScanState *csstate,
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TupleDesc tupDesc);
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extern void ExecAssignScanTypeFromOuterPlan(Plan *node,
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CommonScanState *csstate);
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extern AttributeTupleForm ExecGetTypeInfo(Relation relDesc);
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extern void ExecGetIndexKeyInfo(IndexTupleForm indexTuple, int *numAttsOutP,
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AttrNumber **attsOutP, FuncIndexInfoPtr fInfoP);
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extern void ExecOpenIndices(Oid resultRelationOid,
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RelationInfo *resultRelationInfo);
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extern void ExecCloseIndices(RelationInfo *resultRelationInfo);
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extern IndexTuple ExecFormIndexTuple(HeapTuple heapTuple,
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Relation heapRelation, Relation indexRelation, IndexInfo *indexInfo);
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extern void ExecInsertIndexTuples(TupleTableSlot *slot, ItemPointer tupleid,
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EState *estate);
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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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