greenplumn tablefuncapi 源码
greenplumn tablefuncapi 代码
文件路径：/src/include/tablefuncapi.h
/*-------------------------------------------------------------------------
*
* tablefuncapi.h
* Declarations for Table Function API
*
* Portions Copyright (c) 2011, EMC corporation
* Portions Copyright (c) 2012-Present VMware, Inc. or its affiliates.
*
*
* IDENTIFICATION
* src/include/tablefuncapi.h
*
*-------------------------------------------------------------------------
*/
#ifndef TABLEFUNCAPI_H
#define TABLEFUNCAPI_H
#include "fmgr.h"
#include "access/tupdesc.h"
#include "access/htup.h"
typedef struct AnyTableData *AnyTable;
#define DatumGetAnyTable(d) ((AnyTable) DatumGetPointer(d))
#define AnyTableGetDatum(x) PointerGetDatum(x)
#define PG_GETARG_ANYTABLE(n) (DatumGetAnyTable(PG_GETARG_DATUM(n)))
#define TF_SET_USERDATA(userdata) tf_set_userdata_internal(fcinfo, userdata)
#define TF_GET_USERDATA() tf_get_userdata_internal(fcinfo)
extern TupleDesc AnyTable_GetTupleDesc(AnyTable);
extern HeapTuple AnyTable_GetNextTuple(AnyTable);
extern void tf_set_userdata_internal(FunctionCallInfo fcinfo, bytea *userdata);
extern bytea *tf_get_userdata_internal(FunctionCallInfo fcinfo);
#endif
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