94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
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/* Copyright (C) 2000 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/* This file should be included when using merge_isam_funktions */
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/* Author: Michael Widenius */
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#ifndef _merge_h
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#define _merge_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef _my_base_h
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#include <my_base.h>
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#endif
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#ifndef _nisam_h
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#include <nisam.h>
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#endif
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#define MRG_NAME_EXT ".MRG"
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/* Param to/from mrg_info */
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typedef struct st_mrg_info /* Struct from h_info */
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{
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ulonglong records; /* Records in database */
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ulonglong deleted; /* Deleted records in database */
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ulonglong recpos; /* Pos for last used record */
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ulonglong data_file_length;
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uint reclength; /* Recordlength */
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int errkey; /* With key was dupplicated on err */
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uint options; /* HA_OPTION_... used */
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} MERGE_INFO;
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typedef struct st_mrg_table_info
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{
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N_INFO *table;
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ulonglong file_offset;
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} MRG_TABLE;
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typedef struct st_merge
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{
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MRG_TABLE *open_tables,*current_table,*end_table,*last_used_table;
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ulonglong records; /* records in tables */
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ulonglong del; /* Removed records */
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ulonglong data_file_length;
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uint tables,options,reclength;
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my_bool cache_in_use;
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LIST open_list;
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} MRG_INFO;
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typedef ulong mrg_off_t;
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/* Prototypes for merge-functions */
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extern int mrg_close(MRG_INFO *file);
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extern int mrg_delete(MRG_INFO *file,const byte *buff);
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extern MRG_INFO *mrg_open(const char *name,int mode,int wait_if_locked);
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extern int mrg_panic(enum ha_panic_function function);
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extern int mrg_rfirst(MRG_INFO *file,byte *buf,int inx);
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extern int mrg_rkey(MRG_INFO *file,byte *buf,int inx,const byte *key,
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uint key_len, enum ha_rkey_function search_flag);
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extern int mrg_rrnd(MRG_INFO *file,byte *buf, mrg_off_t pos);
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extern int mrg_rsame(MRG_INFO *file,byte *record,int inx);
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extern int mrg_update(MRG_INFO *file,const byte *old,const byte *new_rec);
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extern int mrg_info(MRG_INFO *file,MERGE_INFO *x,int flag);
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extern int mrg_lock_database(MRG_INFO *file,int lock_type);
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extern int mrg_create(const char *name,const char **table_names);
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extern int mrg_extra(MRG_INFO *file,enum ha_extra_function function);
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extern ha_rows mrg_records_in_range(MRG_INFO *info,int inx,
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const byte *start_key,uint start_key_len,
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enum ha_rkey_function start_search_flag,
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const byte *end_key,uint end_key_len,
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enum ha_rkey_function end_search_flag);
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extern mrg_off_t mrg_position(MRG_INFO *info);
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#ifdef __cplusplus
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}
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#endif
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#endif
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