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/* Copyright (c) 2006, 2010, Oracle and/or its affiliates. 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ #ifndef KEY_INCLUDED #define KEY_INCLUDED class Field; class String; struct TABLE; typedef struct st_bitmap MY_BITMAP; typedef struct st_key KEY; typedef struct st_key_part_info KEY_PART_INFO; int find_ref_key(KEY *key, uint key_count, uchar *record, Field *field, uint *key_length, uint *keypart); void key_copy(uchar *to_key, const uchar *from_record, const KEY *key_info, uint key_length, bool with_zerofill= FALSE); void key_restore(uchar *to_record, const uchar *from_key, KEY *key_info, uint key_length); bool key_cmp_if_same(TABLE *form,const uchar *key,uint index,uint key_length); void key_unpack(String *to, TABLE *table, KEY *key); void field_unpack(String *to, Field *field, const uchar *rec, uint max_length, bool prefix_key); bool is_key_used(TABLE *table, uint idx, const MY_BITMAP *fields); int key_cmp(KEY_PART_INFO *key_part, const uchar *key, uint key_length); ulong key_hashnr(KEY *key_info, uint used_key_parts, const uchar *key); bool key_buf_cmp(KEY *key_info, uint used_key_parts, const uchar *key1, const uchar *key2); extern "C" int key_rec_cmp(void *key_info, uchar *a, uchar *b); int key_tuple_cmp(KEY_PART_INFO *part, uchar *key1, uchar *key2, uint tuple_length); #endif /* KEY_INCLUDED */