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Diffstat (limited to 'innobase/include/rem0cmp.ic')
-rw-r--r-- | innobase/include/rem0cmp.ic | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/innobase/include/rem0cmp.ic b/innobase/include/rem0cmp.ic new file mode 100644 index 00000000000..ebf513f538c --- /dev/null +++ b/innobase/include/rem0cmp.ic @@ -0,0 +1,84 @@ +/*********************************************************************** +Comparison services for records + +(c) 1994-1996 Innobase Oy + +Created 7/1/1994 Heikki Tuuri +************************************************************************/ + +/***************************************************************** +This function is used to compare two data fields for which we know the +data type. */ + +int +cmp_data_data_slow( +/*===============*/ + /* out: 1, 0, -1, if data1 is greater, equal, + less than data2, respectively */ + dtype_t* cur_type,/* in: data type of the fields */ + byte* data1, /* in: data field (== a pointer to a memory + buffer) */ + ulint len1, /* in: data field length or UNIV_SQL_NULL */ + byte* data2, /* in: data field (== a pointer to a memory + buffer) */ + ulint len2); /* in: data field length or UNIV_SQL_NULL */ + + +/***************************************************************** +This function is used to compare two data fields for which we know the +data type. */ +UNIV_INLINE +int +cmp_data_data( +/*==========*/ + /* out: 1, 0, -1, if data1 is greater, equal, + less than data2, respectively */ + dtype_t* cur_type,/* in: data type of the fields */ + byte* data1, /* in: data field (== a pointer to a memory + buffer) */ + ulint len1, /* in: data field length or UNIV_SQL_NULL */ + byte* data2, /* in: data field (== a pointer to a memory + buffer) */ + ulint len2) /* in: data field length or UNIV_SQL_NULL */ +{ + return(cmp_data_data_slow(cur_type, data1, len1, data2, len2)); +} + +/***************************************************************** +This function is used to compare two dfields where at least the first +has its data type field set. */ +UNIV_INLINE +int +cmp_dfield_dfield( +/*==============*/ + /* out: 1, 0, -1, if dfield1 is greater, equal, + less than dfield2, respectively */ + dfield_t* dfield1,/* in: data field; must have type field set */ + dfield_t* dfield2)/* in: data field */ +{ + ut_ad(dfield_check_typed(dfield1)); + + return(cmp_data_data(dfield_get_type(dfield1), + dfield_get_data(dfield1), dfield_get_len(dfield1), + dfield_get_data(dfield2), dfield_get_len(dfield2))); +} + +/***************************************************************** +This function is used to compare two physical records. Only the common +first fields are compared. */ +UNIV_INLINE +int +cmp_rec_rec( +/*========*/ + /* out: 1, 0 , -1 if rec1 is greater, equal, + less, respectively, than rec2; only the common + first fields are compared */ + rec_t* rec1, /* in: physical record */ + rec_t* rec2, /* in: physical record */ + dict_index_t* index) /* in: data dictionary index */ +{ + ulint match_f = 0; + ulint match_b = 0; + + return(cmp_rec_rec_with_match(rec1, rec2, index, &match_f, &match_b)); +} |