1996-07-09 02:22:35 -04:00
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/*-------------------------------------------------------------------------
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*
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* nodeHash.h--
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*
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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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1996-08-28 03:27:54 -04:00
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* $Id: nodeHash.h,v 1.1 1996/08/28 07:22:18 scrappy Exp $
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1996-07-09 02:22:35 -04:00
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef NODEHASH_H
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#define NODEHASH_H
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extern TupleTableSlot *ExecHash(Hash *node);
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extern bool ExecInitHash(Hash *node, EState *estate, Plan *parent);
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extern int ExecCountSlotsHash(Hash *node);
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extern void ExecEndHash(Hash *node);
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extern RelativeAddr hashTableAlloc(int size, HashJoinTable hashtable);
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extern HashJoinTable ExecHashTableCreate(Hash *node);
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extern void ExecHashTableInsert(HashJoinTable hashtable, ExprContext *econtext,
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Var *hashkey, File *batches);
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extern void ExecHashTableDestroy(HashJoinTable hashtable);
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extern int ExecHashGetBucket(HashJoinTable hashtable, ExprContext *econtext,
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Var *hashkey);
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extern void ExecHashOverflowInsert(HashJoinTable hashtable, HashBucket bucket,
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HeapTuple heapTuple);
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extern HeapTuple ExecScanHashBucket(HashJoinState *hjstate, HashBucket bucket,
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HeapTuple curtuple, List *hjclauses,
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ExprContext *econtext);
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extern int ExecHashPartition(Hash *node);
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extern void ExecHashTableReset(HashJoinTable hashtable, int ntuples);
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#endif /* NODEHASH_H */
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