Ejemplo n.º 1
0
ibool
dtuple_datas_are_ordering_equal(
/*============================*/
				/* out: TRUE if length and fieds are equal
				when compared with cmp_data_data:
				NOTE: in character type fields some letters
				are identified with others! (collation) */
	dtuple_t*	tuple1,	/* in: tuple 1 */
	dtuple_t*	tuple2)	/* in: tuple 2 */
{
	dfield_t*	field1;
	dfield_t*	field2;
	ulint		n_fields;
	ulint		i;

	ut_ad(tuple1 && tuple2);
	ut_ad(tuple1->magic_n == DATA_TUPLE_MAGIC_N);
	ut_ad(tuple2->magic_n == DATA_TUPLE_MAGIC_N);
	ut_ad(dtuple_check_typed(tuple1));
	ut_ad(dtuple_check_typed(tuple2));

	n_fields = dtuple_get_n_fields(tuple1);

	if (n_fields != dtuple_get_n_fields(tuple2)) {

		return(FALSE);
	}
	
	for (i = 0; i < n_fields; i++) {

		field1 = dtuple_get_nth_field(tuple1, i);
		field2 = dtuple_get_nth_field(tuple2, i);

		if (0 != cmp_dfield_dfield(field1, field2)) {
		
			return(FALSE);
		}			
	}
	
	return(TRUE);
}
Ejemplo n.º 2
0
/************************************************************//**
Compare two data tuples, respecting the collation of character fields.
@return 1, 0 , -1 if tuple1 is greater, equal, less, respectively,
than tuple2 */
UNIV_INTERN
int
dtuple_coll_cmp(
/*============*/
	const dtuple_t*	tuple1,	/*!< in: tuple 1 */
	const dtuple_t*	tuple2)	/*!< in: tuple 2 */
{
	ulint	n_fields;
	ulint	i;

	ut_ad(tuple1 && tuple2);
	ut_ad(tuple1->magic_n == DATA_TUPLE_MAGIC_N);
	ut_ad(tuple2->magic_n == DATA_TUPLE_MAGIC_N);
	ut_ad(dtuple_check_typed(tuple1));
	ut_ad(dtuple_check_typed(tuple2));

	n_fields = dtuple_get_n_fields(tuple1);

	if (n_fields != dtuple_get_n_fields(tuple2)) {

		return(n_fields < dtuple_get_n_fields(tuple2) ? -1 : 1);
	}

	for (i = 0; i < n_fields; i++) {
		int		cmp;
		const dfield_t*	field1	= dtuple_get_nth_field(tuple1, i);
		const dfield_t*	field2	= dtuple_get_nth_field(tuple2, i);

		cmp = cmp_dfield_dfield(field1, field2);

		if (cmp) {
			return(cmp);
		}
	}

	return(0);
}