74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/* File: tuple.h
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*
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* Description: See "tuple.c"
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*
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* Important NOTE: The TupleField structure is used both to hold backend
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data and manual result set data. The "set_" functions
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are only used for manual result sets by info routines.
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*
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* Comments: See "readme.txt" for copyright and license information.
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*
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*/
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#ifndef __TUPLE_H__
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#define __TUPLE_H__
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#include "psqlodbc.h"
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/* Used by backend data AND manual result sets */
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struct TupleField_
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{
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Int4 len; /* PG length of the current Tuple */
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void *value; /* an array representing the value */
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};
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/* keyset(TID + OID) info */
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struct KeySet_
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{
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UWORD status;
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UInt2 offset;
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UInt4 blocknum;
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OID oid;
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};
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/* Rollback(index + original TID) info */
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struct Rollback_
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{
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SQLLEN index;
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UInt4 blocknum;
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UInt2 offset;
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OID oid;
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UWORD option;
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};
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#define KEYSET_INFO_PUBLIC 0x07
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#define CURS_SELF_ADDING (1L << 3)
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#define CURS_SELF_DELETING (1L << 4)
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#define CURS_SELF_UPDATING (1L << 5)
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#define CURS_SELF_ADDED (1L << 6)
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#define CURS_SELF_DELETED (1L << 7)
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#define CURS_SELF_UPDATED (1L << 8)
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#define CURS_NEEDS_REREAD (1L << 9)
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#define CURS_IN_ROWSET (1L << 10)
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#define CURS_OTHER_DELETED (1L << 11)
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/* These macros are wrappers for the corresponding set_tuplefield functions
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but these handle automatic NULL determination and call set_tuplefield_null()
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if appropriate for the datatype (used by SQLGetTypeInfo).
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*/
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#define set_nullfield_string(FLD, VAL) ((VAL) ? set_tuplefield_string(FLD, (VAL)) : set_tuplefield_null(FLD))
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#define set_nullfield_int2(FLD, VAL) ((VAL) != -1 ? set_tuplefield_int2(FLD, (VAL)) : set_tuplefield_null(FLD))
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#define set_nullfield_int4(FLD, VAL) ((VAL) != -1 ? set_tuplefield_int4(FLD, (VAL)) : set_tuplefield_null(FLD))
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void set_tuplefield_null(TupleField *tuple_field);
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void set_tuplefield_string(TupleField *tuple_field, const char *string);
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void set_tuplefield_int2(TupleField *tuple_field, Int2 value);
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void set_tuplefield_int4(TupleField *tuple_field, Int4 value);
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SQLLEN ClearCachedRows(TupleField *tuple, int num_fields, SQLLEN num_rows);
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SQLLEN ReplaceCachedRows(TupleField *otuple, const TupleField *ituple, int num_fields, SQLLEN num_rows);
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typedef struct _PG_BM_ {
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Int4 index;
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KeySet keys;
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} PG_BM;
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#endif
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