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myisammrg.h
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/* Copyright (c) 2000-2002, 2004, 2006-2008 MySQL AB, 2009 Sun Microsystems, Inc. Use is subject to license terms. 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 02110-1301 USA */ /* This file should be included when using merge_isam_funktions */ #ifndef _myisammrg_h #define _myisammrg_h #ifdef __cplusplus extern "C" { #endif #ifndef _my_base_h #include <my_base.h> #endif #ifndef _myisam_h #include <myisam.h> #endif #include <queues.h> #define MYRG_NAME_EXT ".MRG" #define MYRG_NAME_TMPEXT ".MRG_TMP" /* In which table to INSERT rows */ #define MERGE_INSERT_DISABLED 0 #define MERGE_INSERT_TO_FIRST 1 #define MERGE_INSERT_TO_LAST 2 extern TYPELIB merge_insert_method; /* Param to/from myrg_info */ typedef struct st_mymerge_info /* Struct from h_info */ { ulonglong records; /* Records in database */ ulonglong deleted; /* Deleted records in database */ ulonglong recpos; /* Pos for last used record */ ulonglong data_file_length; ulonglong dupp_key_pos; /* Offset of the Duplicate key in the merge table */ uint reclength; /* Recordlength */ int errkey; /* With key was dupplicated on err */ uint options; /* HA_OPTION_... used */ ulong *rec_per_key; /* for sql optimizing */ } MYMERGE_INFO; typedef struct st_myrg_table_info { struct st_myisam_info *table; ulonglong file_offset; } MYRG_TABLE; typedef struct st_myrg_info { MYRG_TABLE *open_tables,*current_table,*end_table,*last_used_table; ulonglong records; /* records in tables */ ulonglong del; /* Removed records */ ulonglong data_file_length; ulong cache_size; uint merge_insert_method; uint tables,options,reclength,keys; my_bool cache_in_use; /* If MERGE children attached to parent. See top comment in ha_myisammrg.cc */ my_bool children_attached; LIST open_list; QUEUE by_key; ulong *rec_per_key_part; /* for sql optimizing */ mysql_mutex_t mutex; } MYRG_INFO; /* Prototypes for merge-functions */ extern int myrg_close(MYRG_INFO *file); extern int myrg_delete(MYRG_INFO *file,const uchar *buff); extern MYRG_INFO *myrg_open(const char *name,int mode,int wait_if_locked); extern MYRG_INFO *myrg_parent_open(const char *parent_name, int (*callback)(void*, const char*), void *callback_param); extern int myrg_attach_children(MYRG_INFO *m_info, int handle_locking, MI_INFO *(*callback)(void*), void *callback_param, my_bool *need_compat_check); extern int myrg_detach_children(MYRG_INFO *m_info); extern int myrg_panic(enum ha_panic_function function); extern int myrg_rfirst(MYRG_INFO *file,uchar *buf,int inx); extern int myrg_rlast(MYRG_INFO *file,uchar *buf,int inx); extern int myrg_rnext(MYRG_INFO *file,uchar *buf,int inx); extern int myrg_rprev(MYRG_INFO *file,uchar *buf,int inx); extern int myrg_rnext_same(MYRG_INFO *file,uchar *buf); extern int myrg_rkey(MYRG_INFO *info,uchar *buf,int inx, const uchar *key, key_part_map keypart_map, enum ha_rkey_function search_flag); extern int myrg_rrnd(MYRG_INFO *file,uchar *buf,ulonglong pos); extern int myrg_rsame(MYRG_INFO *file,uchar *record,int inx); extern int myrg_update(MYRG_INFO *file,const uchar *old,uchar *new_rec); extern int myrg_write(MYRG_INFO *info,uchar *rec); extern int myrg_status(MYRG_INFO *file,MYMERGE_INFO *x,int flag); extern int myrg_lock_database(MYRG_INFO *file,int lock_type); extern int myrg_create(const char *name, const char **table_names, uint insert_method, my_bool fix_names); extern int myrg_extra(MYRG_INFO *file,enum ha_extra_function function, void *extra_arg); extern int myrg_reset(MYRG_INFO *info); extern void myrg_extrafunc(MYRG_INFO *info,invalidator_by_filename inv); extern ha_rows myrg_records_in_range(MYRG_INFO *info, int inx, key_range *min_key, key_range *max_key); extern ha_rows myrg_records(MYRG_INFO *info); extern ulonglong myrg_position(MYRG_INFO *info); #ifdef __cplusplus } #endif #endif