/***************************************************************************** Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *****************************************************************************/ /*******************************************************************//** @file include/rem0cmp.ic Comparison services for records Created 7/1/1994 Heikki Tuuri ************************************************************************/ /*************************************************************//** This function is used to compare two data fields for which we know the data type. @return 1, 0, -1, if data1 is greater, equal, less than data2, respectively */ UNIV_INLINE int cmp_data_data( /*==========*/ ulint mtype, /*!< in: main type */ ulint prtype, /*!< in: precise type */ const byte* data1, /*!< in: data field (== a pointer to a memory buffer) */ ulint len1, /*!< in: data field length or UNIV_SQL_NULL */ const 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(mtype, prtype, data1, len1, data2, len2)); } /*************************************************************//** This function is used to compare two dfields where at least the first has its data type field set. @return 1, 0, -1, if dfield1 is greater, equal, less than dfield2, respectively */ UNIV_INLINE int cmp_dfield_dfield( /*==============*/ const dfield_t* dfield1,/*!< in: data field; must have type field set */ const dfield_t* dfield2)/*!< in: data field */ { const dtype_t* type; ut_ad(dfield_check_typed(dfield1)); type = dfield_get_type(dfield1); return(cmp_data_data(type->mtype, type->prtype, (const byte*) dfield_get_data(dfield1), dfield_get_len(dfield1), (const byte*) dfield_get_data(dfield2), dfield_get_len(dfield2))); } /*************************************************************//** This function is used to compare two physical records. Only the common first fields are compared. @return 1, 0 , -1 if rec1 is greater, equal, less, respectively, than rec2; only the common first fields are compared */ UNIV_INLINE int cmp_rec_rec( /*========*/ const rec_t* rec1, /*!< in: physical record */ const rec_t* rec2, /*!< in: physical record */ const ulint* offsets1,/*!< in: rec_get_offsets(rec1, index) */ const ulint* offsets2,/*!< in: rec_get_offsets(rec2, index) */ dict_index_t* index) /*!< in: data dictionary index */ { ulint match_f = 0; ulint match_b = 0; return(cmp_rec_rec_with_match(rec1, rec2, offsets1, offsets2, index, &match_f, &match_b, 0)); }