diff options
Diffstat (limited to 'src/interfaces/odbc/windev/tuple.h')
| -rw-r--r-- | src/interfaces/odbc/windev/tuple.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/interfaces/odbc/windev/tuple.h b/src/interfaces/odbc/windev/tuple.h new file mode 100644 index 00000000000..fdc1a5f9eaa --- /dev/null +++ b/src/interfaces/odbc/windev/tuple.h @@ -0,0 +1,46 @@ +/* File: tuple.h + * + * Description: See "tuple.c" + * + * Important NOTE: The TupleField structure is used both to hold backend data and + * manual result set data. The "set_" functions and the TupleNode + * structure are only used for manual result sets by info routines. + * + * Comments: See "notice.txt" for copyright and license information. + * + */ + +#ifndef __TUPLE_H__ +#define __TUPLE_H__ + +#include "psqlodbc.h" + +/* Used by backend data AND manual result sets */ +struct TupleField_ +{ + Int4 len; /* length of the current Tuple */ + void *value; /* an array representing the value */ +}; + +/* Used ONLY for manual result sets */ +struct TupleNode_ +{ + struct TupleNode_ *prev, + *next; + TupleField tuple[1]; +}; + +/* These macros are wrappers for the corresponding set_tuplefield functions + but these handle automatic NULL determination and call set_tuplefield_null() + if appropriate for the datatype (used by SQLGetTypeInfo). +*/ +#define set_nullfield_string(FLD, VAL) ((VAL) ? set_tuplefield_string(FLD, (VAL)) : set_tuplefield_null(FLD)) +#define set_nullfield_int2(FLD, VAL) ((VAL) != -1 ? set_tuplefield_int2(FLD, (VAL)) : set_tuplefield_null(FLD)) +#define set_nullfield_int4(FLD, VAL) ((VAL) != -1 ? set_tuplefield_int4(FLD, (VAL)) : set_tuplefield_null(FLD)) + +void set_tuplefield_null(TupleField *tuple_field); +void set_tuplefield_string(TupleField *tuple_field, char *string); +void set_tuplefield_int2(TupleField *tuple_field, Int2 value); +void set_tuplefield_int4(TupleField *tuple_field, Int4 value); + +#endif |