|
- /*-------------------------------------------------------------------------
- *
- * tupconvert.h
- * Tuple conversion support.
- *
- *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- * src/include/access/tupconvert.h
- *
- *-------------------------------------------------------------------------
- */
- #ifndef TUPCONVERT_H
- #define TUPCONVERT_H
-
- #include "access/htup.h"
- #include "access/tupdesc.h"
- #include "executor/tuptable.h"
-
-
- typedef struct TupleConversionMap
- {
- TupleDesc indesc; /* tupdesc for source rowtype */
- TupleDesc outdesc; /* tupdesc for result rowtype */
- AttrNumber *attrMap; /* indexes of input fields, or 0 for null */
- Datum *invalues; /* workspace for deconstructing source */
- bool *inisnull;
- Datum *outvalues; /* workspace for constructing result */
- bool *outisnull;
- } TupleConversionMap;
-
-
- extern TupleConversionMap *convert_tuples_by_position(TupleDesc indesc,
- TupleDesc outdesc,
- const char *msg);
-
- extern TupleConversionMap *convert_tuples_by_name(TupleDesc indesc,
- TupleDesc outdesc,
- const char *msg);
-
- extern AttrNumber *convert_tuples_by_name_map(TupleDesc indesc,
- TupleDesc outdesc,
- const char *msg);
- extern AttrNumber *convert_tuples_by_name_map_if_req(TupleDesc indesc,
- TupleDesc outdesc,
- const char *msg);
-
- extern HeapTuple execute_attr_map_tuple(HeapTuple tuple, TupleConversionMap *map);
- extern TupleTableSlot *execute_attr_map_slot(AttrNumber *attrMap,
- TupleTableSlot *in_slot, TupleTableSlot *out_slot);
-
- extern void free_conversion_map(TupleConversionMap *map);
-
- #endif /* TUPCONVERT_H */
|
