/*-------------------------------------------------------------------------
 *
 * nodeHash.h--
 *
 *
 *
 * Copyright (c) 1994, Regents of the University of California
 *
 * $Id: nodeHash.h,v 1.4 1997/09/08 02:36:23 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef NODEHASH_H
#define NODEHASH_H

extern TupleTableSlot *ExecHash(Hash * node);
extern bool ExecInitHash(Hash * node, EState * estate, Plan * parent);
extern int	ExecCountSlotsHash(Hash * node);
extern void ExecEndHash(Hash * node);
extern HashJoinTable ExecHashTableCreate(Hash * node);
extern void
ExecHashTableInsert(HashJoinTable hashtable, ExprContext * econtext,
					Var * hashkey, File * batches);
extern void ExecHashTableDestroy(HashJoinTable hashtable);
extern int
ExecHashGetBucket(HashJoinTable hashtable, ExprContext * econtext,
				  Var * hashkey);
extern		HeapTuple
ExecScanHashBucket(HashJoinState * hjstate, HashBucket bucket,
				   HeapTuple curtuple, List * hjclauses,
				   ExprContext * econtext);
extern void ExecHashTableReset(HashJoinTable hashtable, int ntuples);

#endif							/* NODEHASH_H */