1 /* Copyright (c) 2006, 2014, Oracle and/or its affiliates. All rights reserved. 2 3 This program is free software; you can redistribute it and/or modify 4 it under the terms of the GNU General Public License, version 2.0, 5 as published by the Free Software Foundation. 6 7 This program is also distributed with certain software (including 8 but not limited to OpenSSL) that is licensed under separate terms, 9 as designated in a particular file or component or in included license 10 documentation. The authors of MySQL hereby grant you an additional 11 permission to link the program and your derivative works with the 12 separately licensed software that they have included with MySQL. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License, version 2.0, for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software 21 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ 22 23 #ifndef KEY_INCLUDED 24 #define KEY_INCLUDED 25 26 #include "my_global.h" /* uchar */ 27 28 class Field; 29 class String; 30 struct TABLE; 31 typedef struct st_bitmap MY_BITMAP; 32 typedef struct st_key KEY; 33 class KEY_PART_INFO; 34 35 int find_ref_key(KEY *key, uint key_count, uchar *record, Field *field, 36 uint *key_length, uint *keypart); 37 void key_copy(uchar *to_key, uchar *from_record, KEY *key_info, uint key_length); 38 void key_restore(uchar *to_record, uchar *from_key, KEY *key_info, 39 uint key_length); 40 bool key_cmp_if_same(TABLE *form,const uchar *key,uint index,uint key_length); 41 void key_unpack(String *to, TABLE *table, KEY *key); 42 void field_unpack(String *to, Field *field, const uchar *rec, uint max_length, 43 bool prefix_key); 44 bool is_key_used(TABLE *table, uint idx, const MY_BITMAP *fields); 45 int key_cmp(KEY_PART_INFO *key_part, const uchar *key, uint key_length); 46 int key_cmp2(KEY_PART_INFO *key_part, 47 const uchar *key1, uint key1_length, 48 const uchar *key2, uint key2_length); 49 extern "C" int key_rec_cmp(void *key_info, uchar *a, uchar *b); 50 51 #endif /* KEY_INCLUDED */ 52