38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
/* -------------------------------------------------------------------------
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*
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* tupconvert.h
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* Tuple conversion support.
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*
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*
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* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/access/tupconvert.h
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef TUPCONVERT_H
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#define TUPCONVERT_H
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#include "access/htup.h"
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typedef struct TupleConversionMap {
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TupleDesc indesc; /* tupdesc for source rowtype */
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TupleDesc outdesc; /* tupdesc for result rowtype */
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AttrNumber* attrMap; /* indexes of input fields, or 0 for null */
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Datum* invalues; /* workspace for deconstructing source */
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bool* inisnull;
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Datum* outvalues; /* workspace for constructing result */
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bool* outisnull;
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} TupleConversionMap;
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extern TupleConversionMap* convert_tuples_by_position(TupleDesc indesc, TupleDesc outdesc, const char* msg);
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extern TupleConversionMap* convert_tuples_by_name(TupleDesc indesc, TupleDesc outdesc, const char* msg);
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extern HeapTuple do_convert_tuple(HeapTuple tuple, TupleConversionMap* map);
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extern void free_conversion_map(TupleConversionMap* map);
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#endif /* TUPCONVERT_H */
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