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);
}
/************************************************************//**
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);
}
