47 lines
1.0 KiB
C
47 lines
1.0 KiB
C
#ifndef __QUERY_UTIL_H__
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#define __QUERY_UTIL_H__
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#include "postgres.h"
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#include "utils/memutils.h"
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#include "query.h"
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typedef struct QTNode
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{
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ITEM *valnode;
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uint32 flags;
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int4 nchild;
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char *word;
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uint32 sign;
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struct QTNode **child;
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} QTNode;
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#define QTN_NEEDFREE 0x01
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#define QTN_NOCHANGE 0x02
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#define QTN_WORDFREE 0x04
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typedef enum
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{
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PlainMemory,
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SPIMemory,
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AggMemory
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} MemoryType;
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QTNode *QT2QTN(ITEM * in, char *operand);
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QUERYTYPE *QTN2QT(QTNode * in, MemoryType memtype);
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void QTNFree(QTNode * in);
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void QTNSort(QTNode * in);
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void QTNTernary(QTNode * in);
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void QTNBinary(QTNode * in);
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int QTNodeCompare(QTNode * an, QTNode * bn);
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QTNode *QTNCopy(QTNode * in, MemoryType memtype);
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bool QTNEq(QTNode * a, QTNode * b);
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extern MemoryContext AggregateContext;
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#define MEMALLOC(us, s) ( ((us)==SPIMemory) ? SPI_palloc(s) : ( ( (us)==PlainMemory ) ? palloc(s) : MemoryContextAlloc(AggregateContext, (s)) ) )
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#define MEMFREE(us, p) ( ((us)==SPIMemory) ? SPI_pfree(p) : pfree(p) )
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#endif
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