608 lines
22 KiB
C
608 lines
22 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* executor.h
|
|
* support for the POSTGRES executor module
|
|
*
|
|
*
|
|
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* src/include/executor/executor.h
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef EXECUTOR_H
|
|
#define EXECUTOR_H
|
|
|
|
#include "executor/execdesc.h"
|
|
#include "nodes/lockoptions.h"
|
|
#include "nodes/parsenodes.h"
|
|
#include "utils/memutils.h"
|
|
|
|
|
|
/*
|
|
* The "eflags" argument to ExecutorStart and the various ExecInitNode
|
|
* routines is a bitwise OR of the following flag bits, which tell the
|
|
* called plan node what to expect. Note that the flags will get modified
|
|
* as they are passed down the plan tree, since an upper node may require
|
|
* functionality in its subnode not demanded of the plan as a whole
|
|
* (example: MergeJoin requires mark/restore capability in its inner input),
|
|
* or an upper node may shield its input from some functionality requirement
|
|
* (example: Materialize shields its input from needing to do backward scan).
|
|
*
|
|
* EXPLAIN_ONLY indicates that the plan tree is being initialized just so
|
|
* EXPLAIN can print it out; it will not be run. Hence, no side-effects
|
|
* of startup should occur. However, error checks (such as permission checks)
|
|
* should be performed.
|
|
*
|
|
* REWIND indicates that the plan node should try to efficiently support
|
|
* rescans without parameter changes. (Nodes must support ExecReScan calls
|
|
* in any case, but if this flag was not given, they are at liberty to do it
|
|
* through complete recalculation. Note that a parameter change forces a
|
|
* full recalculation in any case.)
|
|
*
|
|
* BACKWARD indicates that the plan node must respect the es_direction flag.
|
|
* When this is not passed, the plan node will only be run forwards.
|
|
*
|
|
* MARK indicates that the plan node must support Mark/Restore calls.
|
|
* When this is not passed, no Mark/Restore will occur.
|
|
*
|
|
* SKIP_TRIGGERS tells ExecutorStart/ExecutorFinish to skip calling
|
|
* AfterTriggerBeginQuery/AfterTriggerEndQuery. This does not necessarily
|
|
* mean that the plan can't queue any AFTER triggers; just that the caller
|
|
* is responsible for there being a trigger context for them to be queued in.
|
|
*/
|
|
#define EXEC_FLAG_EXPLAIN_ONLY 0x0001 /* EXPLAIN, no ANALYZE */
|
|
#define EXEC_FLAG_REWIND 0x0002 /* need efficient rescan */
|
|
#define EXEC_FLAG_BACKWARD 0x0004 /* need backward scan */
|
|
#define EXEC_FLAG_MARK 0x0008 /* need mark/restore */
|
|
#define EXEC_FLAG_SKIP_TRIGGERS 0x0010 /* skip AfterTrigger calls */
|
|
#define EXEC_FLAG_WITH_NO_DATA 0x0020 /* rel scannability doesn't matter */
|
|
|
|
|
|
/* Hook for plugins to get control in ExecutorStart() */
|
|
typedef void (*ExecutorStart_hook_type) (QueryDesc *queryDesc, int eflags);
|
|
extern PGDLLIMPORT ExecutorStart_hook_type ExecutorStart_hook;
|
|
|
|
/* Hook for plugins to get control in ExecutorRun() */
|
|
typedef void (*ExecutorRun_hook_type) (QueryDesc *queryDesc,
|
|
ScanDirection direction,
|
|
uint64 count,
|
|
bool execute_once);
|
|
extern PGDLLIMPORT ExecutorRun_hook_type ExecutorRun_hook;
|
|
|
|
/* Hook for plugins to get control in ExecutorFinish() */
|
|
typedef void (*ExecutorFinish_hook_type) (QueryDesc *queryDesc);
|
|
extern PGDLLIMPORT ExecutorFinish_hook_type ExecutorFinish_hook;
|
|
|
|
/* Hook for plugins to get control in ExecutorEnd() */
|
|
typedef void (*ExecutorEnd_hook_type) (QueryDesc *queryDesc);
|
|
extern PGDLLIMPORT ExecutorEnd_hook_type ExecutorEnd_hook;
|
|
|
|
/* Hook for plugins to get control in ExecCheckRTPerms() */
|
|
typedef bool (*ExecutorCheckPerms_hook_type) (List *, bool);
|
|
extern PGDLLIMPORT ExecutorCheckPerms_hook_type ExecutorCheckPerms_hook;
|
|
|
|
|
|
/*
|
|
* prototypes from functions in execAmi.c
|
|
*/
|
|
struct Path; /* avoid including pathnodes.h here */
|
|
|
|
extern void ExecReScan(PlanState *node);
|
|
extern void ExecMarkPos(PlanState *node);
|
|
extern void ExecRestrPos(PlanState *node);
|
|
extern bool ExecSupportsMarkRestore(struct Path *pathnode);
|
|
extern bool ExecSupportsBackwardScan(Plan *node);
|
|
extern bool ExecMaterializesOutput(NodeTag plantype);
|
|
|
|
/*
|
|
* prototypes from functions in execCurrent.c
|
|
*/
|
|
extern bool execCurrentOf(CurrentOfExpr *cexpr,
|
|
ExprContext *econtext,
|
|
Oid table_oid,
|
|
ItemPointer current_tid);
|
|
|
|
/*
|
|
* prototypes from functions in execGrouping.c
|
|
*/
|
|
extern ExprState *execTuplesMatchPrepare(TupleDesc desc,
|
|
int numCols,
|
|
const AttrNumber *keyColIdx,
|
|
const Oid *eqOperators,
|
|
const Oid *collations,
|
|
PlanState *parent);
|
|
extern void execTuplesHashPrepare(int numCols,
|
|
const Oid *eqOperators,
|
|
Oid **eqFuncOids,
|
|
FmgrInfo **hashFunctions);
|
|
extern TupleHashTable BuildTupleHashTable(PlanState *parent,
|
|
TupleDesc inputDesc,
|
|
int numCols, AttrNumber *keyColIdx,
|
|
const Oid *eqfuncoids,
|
|
FmgrInfo *hashfunctions,
|
|
Oid *collations,
|
|
long nbuckets, Size additionalsize,
|
|
MemoryContext tablecxt,
|
|
MemoryContext tempcxt, bool use_variable_hash_iv);
|
|
extern TupleHashTable BuildTupleHashTableExt(PlanState *parent,
|
|
TupleDesc inputDesc,
|
|
int numCols, AttrNumber *keyColIdx,
|
|
const Oid *eqfuncoids,
|
|
FmgrInfo *hashfunctions,
|
|
Oid *collations,
|
|
long nbuckets, Size additionalsize,
|
|
MemoryContext metacxt,
|
|
MemoryContext tablecxt,
|
|
MemoryContext tempcxt, bool use_variable_hash_iv);
|
|
extern TupleHashEntry LookupTupleHashEntry(TupleHashTable hashtable,
|
|
TupleTableSlot *slot,
|
|
bool *isnew);
|
|
extern TupleHashEntry FindTupleHashEntry(TupleHashTable hashtable,
|
|
TupleTableSlot *slot,
|
|
ExprState *eqcomp,
|
|
FmgrInfo *hashfunctions);
|
|
extern void ResetTupleHashTable(TupleHashTable hashtable);
|
|
|
|
/*
|
|
* prototypes from functions in execJunk.c
|
|
*/
|
|
extern JunkFilter *ExecInitJunkFilter(List *targetList,
|
|
TupleTableSlot *slot);
|
|
extern JunkFilter *ExecInitJunkFilterConversion(List *targetList,
|
|
TupleDesc cleanTupType,
|
|
TupleTableSlot *slot);
|
|
extern AttrNumber ExecFindJunkAttribute(JunkFilter *junkfilter,
|
|
const char *attrName);
|
|
extern AttrNumber ExecFindJunkAttributeInTlist(List *targetlist,
|
|
const char *attrName);
|
|
extern Datum ExecGetJunkAttribute(TupleTableSlot *slot, AttrNumber attno,
|
|
bool *isNull);
|
|
extern TupleTableSlot *ExecFilterJunk(JunkFilter *junkfilter,
|
|
TupleTableSlot *slot);
|
|
|
|
|
|
/*
|
|
* prototypes from functions in execMain.c
|
|
*/
|
|
extern void ExecutorStart(QueryDesc *queryDesc, int eflags);
|
|
extern void standard_ExecutorStart(QueryDesc *queryDesc, int eflags);
|
|
extern void ExecutorRun(QueryDesc *queryDesc,
|
|
ScanDirection direction, uint64 count, bool execute_once);
|
|
extern void standard_ExecutorRun(QueryDesc *queryDesc,
|
|
ScanDirection direction, uint64 count, bool execute_once);
|
|
extern void ExecutorFinish(QueryDesc *queryDesc);
|
|
extern void standard_ExecutorFinish(QueryDesc *queryDesc);
|
|
extern void ExecutorEnd(QueryDesc *queryDesc);
|
|
extern void standard_ExecutorEnd(QueryDesc *queryDesc);
|
|
extern void ExecutorRewind(QueryDesc *queryDesc);
|
|
extern bool ExecCheckRTPerms(List *rangeTable, bool ereport_on_violation);
|
|
extern void CheckValidResultRel(ResultRelInfo *resultRelInfo, CmdType operation);
|
|
extern void InitResultRelInfo(ResultRelInfo *resultRelInfo,
|
|
Relation resultRelationDesc,
|
|
Index resultRelationIndex,
|
|
Relation partition_root,
|
|
int instrument_options);
|
|
extern ResultRelInfo *ExecGetTriggerResultRel(EState *estate, Oid relid);
|
|
extern void ExecCleanUpTriggerState(EState *estate);
|
|
extern void ExecConstraints(ResultRelInfo *resultRelInfo,
|
|
TupleTableSlot *slot, EState *estate);
|
|
extern bool ExecPartitionCheck(ResultRelInfo *resultRelInfo,
|
|
TupleTableSlot *slot, EState *estate, bool emitError);
|
|
extern void ExecPartitionCheckEmitError(ResultRelInfo *resultRelInfo,
|
|
TupleTableSlot *slot, EState *estate);
|
|
extern void ExecWithCheckOptions(WCOKind kind, ResultRelInfo *resultRelInfo,
|
|
TupleTableSlot *slot, EState *estate);
|
|
extern LockTupleMode ExecUpdateLockMode(EState *estate, ResultRelInfo *relinfo);
|
|
extern ExecRowMark *ExecFindRowMark(EState *estate, Index rti, bool missing_ok);
|
|
extern ExecAuxRowMark *ExecBuildAuxRowMark(ExecRowMark *erm, List *targetlist);
|
|
extern TupleTableSlot *EvalPlanQual(EState *estate, EPQState *epqstate,
|
|
Relation relation, Index rti, LockTupleMode lockmode,
|
|
ItemPointer tid, TransactionId priorXmax);
|
|
extern bool EvalPlanQualFetch(EState *estate, Relation relation,
|
|
LockTupleMode lockmode, LockWaitPolicy wait_policy,
|
|
ItemPointer tid, TransactionId priorXmax,
|
|
TupleTableSlot *slot);
|
|
extern void EvalPlanQualInit(EPQState *epqstate, EState *estate,
|
|
Plan *subplan, List *auxrowmarks, int epqParam);
|
|
extern void EvalPlanQualSetPlan(EPQState *epqstate,
|
|
Plan *subplan, List *auxrowmarks);
|
|
extern TupleTableSlot *EvalPlanQualSlot(EPQState *epqstate,
|
|
Relation relation, Index rti);
|
|
|
|
#define EvalPlanQualSetSlot(epqstate, slot) ((epqstate)->origslot = (slot))
|
|
extern void EvalPlanQualFetchRowMarks(EPQState *epqstate);
|
|
extern TupleTableSlot *EvalPlanQualNext(EPQState *epqstate);
|
|
extern void EvalPlanQualBegin(EPQState *epqstate, EState *parentestate);
|
|
extern void EvalPlanQualEnd(EPQState *epqstate);
|
|
|
|
/*
|
|
* functions in execProcnode.c
|
|
*/
|
|
extern PlanState *ExecInitNode(Plan *node, EState *estate, int eflags);
|
|
extern void ExecSetExecProcNode(PlanState *node, ExecProcNodeMtd function);
|
|
extern Node *MultiExecProcNode(PlanState *node);
|
|
extern void ExecEndNode(PlanState *node);
|
|
extern bool ExecShutdownNode(PlanState *node);
|
|
extern void ExecSetTupleBound(int64 tuples_needed, PlanState *child_node);
|
|
|
|
|
|
/* ----------------------------------------------------------------
|
|
* ExecProcNode
|
|
*
|
|
* Execute the given node to return a(nother) tuple.
|
|
* ----------------------------------------------------------------
|
|
*/
|
|
#ifndef FRONTEND
|
|
static inline TupleTableSlot *
|
|
ExecProcNode(PlanState *node)
|
|
{
|
|
if (node->chgParam != NULL) /* something changed? */
|
|
ExecReScan(node); /* let ReScan handle this */
|
|
|
|
return node->ExecProcNode(node);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* prototypes from functions in execExpr.c
|
|
*/
|
|
extern ExprState *ExecInitExpr(Expr *node, PlanState *parent);
|
|
extern ExprState *ExecInitExprWithParams(Expr *node, ParamListInfo ext_params);
|
|
extern ExprState *ExecInitQual(List *qual, PlanState *parent);
|
|
extern ExprState *ExecInitCheck(List *qual, PlanState *parent);
|
|
extern List *ExecInitExprList(List *nodes, PlanState *parent);
|
|
extern ExprState *ExecBuildAggTrans(AggState *aggstate, struct AggStatePerPhaseData *phase,
|
|
bool doSort, bool doHash);
|
|
extern ExprState *ExecBuildGroupingEqual(TupleDesc ldesc, TupleDesc rdesc,
|
|
const TupleTableSlotOps *lops, const TupleTableSlotOps *rops,
|
|
int numCols,
|
|
const AttrNumber *keyColIdx,
|
|
const Oid *eqfunctions,
|
|
const Oid *collations,
|
|
PlanState *parent);
|
|
extern ProjectionInfo *ExecBuildProjectionInfo(List *targetList,
|
|
ExprContext *econtext,
|
|
TupleTableSlot *slot,
|
|
PlanState *parent,
|
|
TupleDesc inputDesc);
|
|
extern ExprState *ExecPrepareExpr(Expr *node, EState *estate);
|
|
extern ExprState *ExecPrepareQual(List *qual, EState *estate);
|
|
extern ExprState *ExecPrepareCheck(List *qual, EState *estate);
|
|
extern List *ExecPrepareExprList(List *nodes, EState *estate);
|
|
|
|
/*
|
|
* ExecEvalExpr
|
|
*
|
|
* Evaluate expression identified by "state" in the execution context
|
|
* given by "econtext". *isNull is set to the is-null flag for the result,
|
|
* and the Datum value is the function result.
|
|
*
|
|
* The caller should already have switched into the temporary memory
|
|
* context econtext->ecxt_per_tuple_memory. The convenience entry point
|
|
* ExecEvalExprSwitchContext() is provided for callers who don't prefer to
|
|
* do the switch in an outer loop.
|
|
*/
|
|
#ifndef FRONTEND
|
|
static inline Datum
|
|
ExecEvalExpr(ExprState *state,
|
|
ExprContext *econtext,
|
|
bool *isNull)
|
|
{
|
|
return state->evalfunc(state, econtext, isNull);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* ExecEvalExprSwitchContext
|
|
*
|
|
* Same as ExecEvalExpr, but get into the right allocation context explicitly.
|
|
*/
|
|
#ifndef FRONTEND
|
|
static inline Datum
|
|
ExecEvalExprSwitchContext(ExprState *state,
|
|
ExprContext *econtext,
|
|
bool *isNull)
|
|
{
|
|
Datum retDatum;
|
|
MemoryContext oldContext;
|
|
|
|
oldContext = MemoryContextSwitchTo(econtext->ecxt_per_tuple_memory);
|
|
retDatum = state->evalfunc(state, econtext, isNull);
|
|
MemoryContextSwitchTo(oldContext);
|
|
return retDatum;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* ExecProject
|
|
*
|
|
* Projects a tuple based on projection info and stores it in the slot passed
|
|
* to ExecBuildProjectInfo().
|
|
*
|
|
* Note: the result is always a virtual tuple; therefore it may reference
|
|
* the contents of the exprContext's scan tuples and/or temporary results
|
|
* constructed in the exprContext. If the caller wishes the result to be
|
|
* valid longer than that data will be valid, he must call ExecMaterializeSlot
|
|
* on the result slot.
|
|
*/
|
|
#ifndef FRONTEND
|
|
static inline TupleTableSlot *
|
|
ExecProject(ProjectionInfo *projInfo)
|
|
{
|
|
ExprContext *econtext = projInfo->pi_exprContext;
|
|
ExprState *state = &projInfo->pi_state;
|
|
TupleTableSlot *slot = state->resultslot;
|
|
bool isnull;
|
|
|
|
/*
|
|
* Clear any former contents of the result slot. This makes it safe for
|
|
* us to use the slot's Datum/isnull arrays as workspace.
|
|
*/
|
|
ExecClearTuple(slot);
|
|
|
|
/* Run the expression, discarding scalar result from the last column. */
|
|
(void) ExecEvalExprSwitchContext(state, econtext, &isnull);
|
|
|
|
/*
|
|
* Successfully formed a result row. Mark the result slot as containing a
|
|
* valid virtual tuple (inlined version of ExecStoreVirtualTuple()).
|
|
*/
|
|
slot->tts_flags &= ~TTS_FLAG_EMPTY;
|
|
slot->tts_nvalid = slot->tts_tupleDescriptor->natts;
|
|
|
|
return slot;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* ExecQual - evaluate a qual prepared with ExecInitQual (possibly via
|
|
* ExecPrepareQual). Returns true if qual is satisfied, else false.
|
|
*
|
|
* Note: ExecQual used to have a third argument "resultForNull". The
|
|
* behavior of this function now corresponds to resultForNull == false.
|
|
* If you want the resultForNull == true behavior, see ExecCheck.
|
|
*/
|
|
#ifndef FRONTEND
|
|
static inline bool
|
|
ExecQual(ExprState *state, ExprContext *econtext)
|
|
{
|
|
Datum ret;
|
|
bool isnull;
|
|
|
|
/* short-circuit (here and in ExecInitQual) for empty restriction list */
|
|
if (state == NULL)
|
|
return true;
|
|
|
|
/* verify that expression was compiled using ExecInitQual */
|
|
Assert(state->flags & EEO_FLAG_IS_QUAL);
|
|
|
|
ret = ExecEvalExprSwitchContext(state, econtext, &isnull);
|
|
|
|
/* EEOP_QUAL should never return NULL */
|
|
Assert(!isnull);
|
|
|
|
return DatumGetBool(ret);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* ExecQualAndReset() - evaluate qual with ExecQual() and reset expression
|
|
* context.
|
|
*/
|
|
#ifndef FRONTEND
|
|
static inline bool
|
|
ExecQualAndReset(ExprState *state, ExprContext *econtext)
|
|
{
|
|
bool ret = ExecQual(state, econtext);
|
|
|
|
/* inline ResetExprContext, to avoid ordering issue in this file */
|
|
MemoryContextReset(econtext->ecxt_per_tuple_memory);
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
extern bool ExecCheck(ExprState *state, ExprContext *context);
|
|
|
|
/*
|
|
* prototypes from functions in execSRF.c
|
|
*/
|
|
extern SetExprState *ExecInitTableFunctionResult(Expr *expr,
|
|
ExprContext *econtext, PlanState *parent);
|
|
extern Tuplestorestate *ExecMakeTableFunctionResult(SetExprState *setexpr,
|
|
ExprContext *econtext,
|
|
MemoryContext argContext,
|
|
TupleDesc expectedDesc,
|
|
bool randomAccess);
|
|
extern SetExprState *ExecInitFunctionResultSet(Expr *expr,
|
|
ExprContext *econtext, PlanState *parent);
|
|
extern Datum ExecMakeFunctionResultSet(SetExprState *fcache,
|
|
ExprContext *econtext,
|
|
MemoryContext argContext,
|
|
bool *isNull,
|
|
ExprDoneCond *isDone);
|
|
|
|
/*
|
|
* prototypes from functions in execScan.c
|
|
*/
|
|
typedef TupleTableSlot *(*ExecScanAccessMtd) (ScanState *node);
|
|
typedef bool (*ExecScanRecheckMtd) (ScanState *node, TupleTableSlot *slot);
|
|
|
|
extern TupleTableSlot *ExecScan(ScanState *node, ExecScanAccessMtd accessMtd,
|
|
ExecScanRecheckMtd recheckMtd);
|
|
extern void ExecAssignScanProjectionInfo(ScanState *node);
|
|
extern void ExecAssignScanProjectionInfoWithVarno(ScanState *node, Index varno);
|
|
extern void ExecScanReScan(ScanState *node);
|
|
|
|
/*
|
|
* prototypes from functions in execTuples.c
|
|
*/
|
|
extern void ExecInitResultTypeTL(PlanState *planstate);
|
|
extern void ExecInitResultSlot(PlanState *planstate,
|
|
const TupleTableSlotOps *tts_ops);
|
|
extern void ExecInitResultTupleSlotTL(PlanState *planstate,
|
|
const TupleTableSlotOps *tts_ops);
|
|
extern void ExecInitScanTupleSlot(EState *estate, ScanState *scanstate,
|
|
TupleDesc tupleDesc,
|
|
const TupleTableSlotOps *tts_ops);
|
|
extern TupleTableSlot *ExecInitExtraTupleSlot(EState *estate,
|
|
TupleDesc tupledesc,
|
|
const TupleTableSlotOps *tts_ops);
|
|
extern TupleTableSlot *ExecInitNullTupleSlot(EState *estate, TupleDesc tupType,
|
|
const TupleTableSlotOps *tts_ops);
|
|
extern TupleDesc ExecTypeFromTL(List *targetList);
|
|
extern TupleDesc ExecCleanTypeFromTL(List *targetList);
|
|
extern TupleDesc ExecTypeFromExprList(List *exprList);
|
|
extern void ExecTypeSetColNames(TupleDesc typeInfo, List *namesList);
|
|
extern void UpdateChangedParamSet(PlanState *node, Bitmapset *newchg);
|
|
|
|
typedef struct TupOutputState
|
|
{
|
|
TupleTableSlot *slot;
|
|
DestReceiver *dest;
|
|
} TupOutputState;
|
|
|
|
extern TupOutputState *begin_tup_output_tupdesc(DestReceiver *dest,
|
|
TupleDesc tupdesc,
|
|
const TupleTableSlotOps *tts_ops);
|
|
extern void do_tup_output(TupOutputState *tstate, Datum *values, bool *isnull);
|
|
extern void do_text_output_multiline(TupOutputState *tstate, const char *txt);
|
|
extern void end_tup_output(TupOutputState *tstate);
|
|
|
|
/*
|
|
* Write a single line of text given as a C string.
|
|
*
|
|
* Should only be used with a single-TEXT-attribute tupdesc.
|
|
*/
|
|
#define do_text_output_oneline(tstate, str_to_emit) \
|
|
do { \
|
|
Datum values_[1]; \
|
|
bool isnull_[1]; \
|
|
values_[0] = PointerGetDatum(cstring_to_text(str_to_emit)); \
|
|
isnull_[0] = false; \
|
|
do_tup_output(tstate, values_, isnull_); \
|
|
pfree(DatumGetPointer(values_[0])); \
|
|
} while (0)
|
|
|
|
|
|
/*
|
|
* prototypes from functions in execUtils.c
|
|
*/
|
|
extern EState *CreateExecutorState(void);
|
|
extern void FreeExecutorState(EState *estate);
|
|
extern ExprContext *CreateExprContext(EState *estate);
|
|
extern ExprContext *CreateStandaloneExprContext(void);
|
|
extern void FreeExprContext(ExprContext *econtext, bool isCommit);
|
|
extern void ReScanExprContext(ExprContext *econtext);
|
|
|
|
#define ResetExprContext(econtext) \
|
|
MemoryContextReset((econtext)->ecxt_per_tuple_memory)
|
|
|
|
extern ExprContext *MakePerTupleExprContext(EState *estate);
|
|
|
|
/* Get an EState's per-output-tuple exprcontext, making it if first use */
|
|
#define GetPerTupleExprContext(estate) \
|
|
((estate)->es_per_tuple_exprcontext ? \
|
|
(estate)->es_per_tuple_exprcontext : \
|
|
MakePerTupleExprContext(estate))
|
|
|
|
#define GetPerTupleMemoryContext(estate) \
|
|
(GetPerTupleExprContext(estate)->ecxt_per_tuple_memory)
|
|
|
|
/* Reset an EState's per-output-tuple exprcontext, if one's been created */
|
|
#define ResetPerTupleExprContext(estate) \
|
|
do { \
|
|
if ((estate)->es_per_tuple_exprcontext) \
|
|
ResetExprContext((estate)->es_per_tuple_exprcontext); \
|
|
} while (0)
|
|
|
|
extern void ExecAssignExprContext(EState *estate, PlanState *planstate);
|
|
extern TupleDesc ExecGetResultType(PlanState *planstate);
|
|
extern TupleTableSlot ExecGetResultSlot(PlanState *planstate);
|
|
extern const TupleTableSlotOps *ExecGetResultSlotOps(PlanState *planstate,
|
|
bool *isfixed);
|
|
extern void ExecAssignProjectionInfo(PlanState *planstate,
|
|
TupleDesc inputDesc);
|
|
extern void ExecConditionalAssignProjectionInfo(PlanState *planstate,
|
|
TupleDesc inputDesc, Index varno);
|
|
extern void ExecFreeExprContext(PlanState *planstate);
|
|
extern void ExecAssignScanType(ScanState *scanstate, TupleDesc tupDesc);
|
|
extern void ExecCreateScanSlotFromOuterPlan(EState *estate,
|
|
ScanState *scanstate,
|
|
const TupleTableSlotOps *tts_ops);
|
|
|
|
extern bool ExecRelationIsTargetRelation(EState *estate, Index scanrelid);
|
|
|
|
extern Relation ExecOpenScanRelation(EState *estate, Index scanrelid, int eflags);
|
|
|
|
extern void ExecInitRangeTable(EState *estate, List *rangeTable);
|
|
|
|
static inline RangeTblEntry *
|
|
exec_rt_fetch(Index rti, EState *estate)
|
|
{
|
|
Assert(rti > 0 && rti <= estate->es_range_table_size);
|
|
return estate->es_range_table_array[rti - 1];
|
|
}
|
|
|
|
extern Relation ExecGetRangeTableRelation(EState *estate, Index rti);
|
|
|
|
extern int executor_errposition(EState *estate, int location);
|
|
|
|
extern void RegisterExprContextCallback(ExprContext *econtext,
|
|
ExprContextCallbackFunction function,
|
|
Datum arg);
|
|
extern void UnregisterExprContextCallback(ExprContext *econtext,
|
|
ExprContextCallbackFunction function,
|
|
Datum arg);
|
|
|
|
extern Datum GetAttributeByName(HeapTupleHeader tuple, const char *attname,
|
|
bool *isNull);
|
|
extern Datum GetAttributeByNum(HeapTupleHeader tuple, AttrNumber attrno,
|
|
bool *isNull);
|
|
|
|
extern int ExecTargetListLength(List *targetlist);
|
|
extern int ExecCleanTargetListLength(List *targetlist);
|
|
|
|
extern TupleTableSlot *ExecGetTriggerOldSlot(EState *estate, ResultRelInfo *relInfo);
|
|
extern TupleTableSlot *ExecGetTriggerNewSlot(EState *estate, ResultRelInfo *relInfo);
|
|
extern TupleTableSlot *ExecGetReturningSlot(EState *estate, ResultRelInfo *relInfo);
|
|
|
|
/*
|
|
* prototypes from functions in execIndexing.c
|
|
*/
|
|
extern void ExecOpenIndices(ResultRelInfo *resultRelInfo, bool speculative);
|
|
extern void ExecCloseIndices(ResultRelInfo *resultRelInfo);
|
|
extern List *ExecInsertIndexTuples(TupleTableSlot *slot, ItemPointer tupleid,
|
|
EState *estate, bool noDupErr, bool *specConflict,
|
|
List *arbiterIndexes);
|
|
extern bool ExecCheckIndexConstraints(TupleTableSlot *slot, EState *estate,
|
|
ItemPointer conflictTid, List *arbiterIndexes);
|
|
extern void check_exclusion_constraint(Relation heap, Relation index,
|
|
IndexInfo *indexInfo,
|
|
ItemPointer tupleid,
|
|
Datum *values, bool *isnull,
|
|
EState *estate, bool newIndex);
|
|
|
|
/*
|
|
* prototypes from functions in execReplication.c
|
|
*/
|
|
extern bool RelationFindReplTupleByIndex(Relation rel, Oid idxoid,
|
|
LockTupleMode lockmode,
|
|
TupleTableSlot *searchslot,
|
|
TupleTableSlot *outslot);
|
|
extern bool RelationFindReplTupleSeq(Relation rel, LockTupleMode lockmode,
|
|
TupleTableSlot *searchslot, TupleTableSlot *outslot);
|
|
|
|
extern void ExecSimpleRelationInsert(EState *estate, TupleTableSlot *slot);
|
|
extern void ExecSimpleRelationUpdate(EState *estate, EPQState *epqstate,
|
|
TupleTableSlot *searchslot, TupleTableSlot *slot);
|
|
extern void ExecSimpleRelationDelete(EState *estate, EPQState *epqstate,
|
|
TupleTableSlot *searchslot);
|
|
extern void CheckCmdReplicaIdentity(Relation rel, CmdType cmd);
|
|
|
|
extern void CheckSubscriptionRelkind(char relkind, const char *nspname,
|
|
const char *relname);
|
|
|
|
#endif /* EXECUTOR_H */
|