diff options
Diffstat (limited to 'storage/myisammrg')
| -rw-r--r-- | storage/myisammrg/CMakeLists.txt | 6 | ||||
| -rw-r--r-- | storage/myisammrg/Makefile.am | 20 | ||||
| -rw-r--r-- | storage/myisammrg/ha_myisammrg.cc | 578 | ||||
| -rw-r--r-- | storage/myisammrg/ha_myisammrg.h | 88 | ||||
| -rw-r--r-- | storage/myisammrg/plug.in | 5 |
5 files changed, 694 insertions, 3 deletions
diff --git a/storage/myisammrg/CMakeLists.txt b/storage/myisammrg/CMakeLists.txt index 83168f6c60c..a86eff9d764 100644 --- a/storage/myisammrg/CMakeLists.txt +++ b/storage/myisammrg/CMakeLists.txt @@ -1,8 +1,12 @@ SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX") SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX") -INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/include) +INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/include ${CMAKE_SOURCE_DIR}/zlib + ${CMAKE_SOURCE_DIR}/sql + ${CMAKE_SOURCE_DIR}/regex + ${CMAKE_SOURCE_DIR}/extra/yassl/include) ADD_LIBRARY(myisammrg myrg_close.c myrg_create.c myrg_delete.c myrg_extra.c myrg_info.c + ha_myisammrg.cc myrg_locking.c myrg_open.c myrg_panic.c myrg_queue.c myrg_range.c myrg_rfirst.c myrg_rkey.c myrg_rlast.c myrg_rnext.c myrg_rnext_same.c myrg_rprev.c myrg_rrnd.c myrg_rsame.c myrg_static.c myrg_update.c diff --git a/storage/myisammrg/Makefile.am b/storage/myisammrg/Makefile.am index 0402f2730b9..08cd52c363f 100644 --- a/storage/myisammrg/Makefile.am +++ b/storage/myisammrg/Makefile.am @@ -14,15 +14,31 @@ # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -INCLUDES = -I$(top_builddir)/include -I$(top_srcdir)/include +MYSQLDATAdir = $(localstatedir) +MYSQLSHAREdir = $(pkgdatadir) +MYSQLBASEdir= $(prefix) +MYSQLLIBdir= $(pkglibdir) +INCLUDES = -I$(top_srcdir)/include -I$(top_builddir)/include \ + -I$(top_srcdir)/regex \ + -I$(top_srcdir)/sql \ + -I$(srcdir) +WRAPLIBS= + +LDADD = + +DEFS = @DEFS@ pkglib_LIBRARIES = libmyisammrg.a -noinst_HEADERS = myrg_def.h +noinst_HEADERS = myrg_def.h ha_myisammrg.h +noinst_LIBRARIES = libmyisammrg.a libmyisammrg_a_SOURCES = myrg_open.c myrg_extra.c myrg_info.c myrg_locking.c \ myrg_rrnd.c myrg_update.c myrg_delete.c myrg_rsame.c \ myrg_panic.c myrg_close.c myrg_create.c myrg_static.c \ myrg_rkey.c myrg_rfirst.c myrg_rlast.c myrg_rnext.c \ myrg_rprev.c myrg_queue.c myrg_write.c myrg_range.c \ + ha_myisammrg.cc \ myrg_rnext_same.c + + EXTRA_DIST = CMakeLists.txt # Don't update the files from bitkeeper diff --git a/storage/myisammrg/ha_myisammrg.cc b/storage/myisammrg/ha_myisammrg.cc new file mode 100644 index 00000000000..8c767e32b83 --- /dev/null +++ b/storage/myisammrg/ha_myisammrg.cc @@ -0,0 +1,578 @@ +/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB + + 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; either version 2 of the License, or + (at your option) any later version. + + 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 */ + + +#ifdef USE_PRAGMA_IMPLEMENTATION +#pragma implementation // gcc: Class implementation +#endif + +#define MYSQL_SERVER 1 +#include "mysql_priv.h" +#include <mysql/plugin.h> +#include <m_ctype.h> +#include "ha_myisammrg.h" +#include "myrg_def.h" + + +/***************************************************************************** +** MyISAM MERGE tables +*****************************************************************************/ + +static handler *myisammrg_create_handler(TABLE_SHARE *table, + MEM_ROOT *mem_root); + +/* MyISAM MERGE handlerton */ + +handlerton myisammrg_hton; + +static handler *myisammrg_create_handler(TABLE_SHARE *table, + MEM_ROOT *mem_root) +{ + return new (mem_root) ha_myisammrg(table); +} + + +ha_myisammrg::ha_myisammrg(TABLE_SHARE *table_arg) + :handler(&myisammrg_hton, table_arg), file(0) +{} + +static const char *ha_myisammrg_exts[] = { + ".MRG", + NullS +}; + +const char **ha_myisammrg::bas_ext() const +{ + return ha_myisammrg_exts; +} + + +const char *ha_myisammrg::index_type(uint key_number) +{ + return ((table->key_info[key_number].flags & HA_FULLTEXT) ? + "FULLTEXT" : + (table->key_info[key_number].flags & HA_SPATIAL) ? + "SPATIAL" : + (table->key_info[key_number].algorithm == HA_KEY_ALG_RTREE) ? + "RTREE" : + "BTREE"); +} + + +int ha_myisammrg::open(const char *name, int mode, uint test_if_locked) +{ + char name_buff[FN_REFLEN]; + + DBUG_PRINT("info", ("ha_myisammrg::open")); + if (!(file=myrg_open(fn_format(name_buff,name,"","", + MY_UNPACK_FILENAME|MY_APPEND_EXT), + mode, test_if_locked))) + { + DBUG_PRINT("info", ("ha_myisammrg::open exit %d", my_errno)); + return (my_errno ? my_errno : -1); + } + DBUG_PRINT("info", ("ha_myisammrg::open myrg_extrafunc...")); + myrg_extrafunc(file, query_cache_invalidate_by_MyISAM_filename_ref); + if (!(test_if_locked == HA_OPEN_WAIT_IF_LOCKED || + test_if_locked == HA_OPEN_ABORT_IF_LOCKED)) + myrg_extra(file,HA_EXTRA_NO_WAIT_LOCK,0); + info(HA_STATUS_NO_LOCK | HA_STATUS_VARIABLE | HA_STATUS_CONST); + if (!(test_if_locked & HA_OPEN_WAIT_IF_LOCKED)) + myrg_extra(file,HA_EXTRA_WAIT_LOCK,0); + + if (table->s->reclength != stats.mean_rec_length && stats.mean_rec_length) + { + DBUG_PRINT("error",("reclength: %d mean_rec_length: %d", + table->s->reclength, stats.mean_rec_length)); + goto err; + } +#if !defined(BIG_TABLES) || SIZEOF_OFF_T == 4 + /* Merge table has more than 2G rows */ + if (table->s->crashed) + goto err; +#endif + return (0); +err: + myrg_close(file); + file=0; + return (my_errno= HA_ERR_WRONG_MRG_TABLE_DEF); +} + +int ha_myisammrg::close(void) +{ + return myrg_close(file); +} + +int ha_myisammrg::write_row(byte * buf) +{ + statistic_increment(table->in_use->status_var.ha_write_count,&LOCK_status); + + if (file->merge_insert_method == MERGE_INSERT_DISABLED || !file->tables) + return (HA_ERR_TABLE_READONLY); + + if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_INSERT) + table->timestamp_field->set_time(); + if (table->next_number_field && buf == table->record[0]) + update_auto_increment(); + return myrg_write(file,buf); +} + +int ha_myisammrg::update_row(const byte * old_data, byte * new_data) +{ + statistic_increment(table->in_use->status_var.ha_update_count,&LOCK_status); + if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_UPDATE) + table->timestamp_field->set_time(); + return myrg_update(file,old_data,new_data); +} + +int ha_myisammrg::delete_row(const byte * buf) +{ + statistic_increment(table->in_use->status_var.ha_delete_count,&LOCK_status); + return myrg_delete(file,buf); +} + +int ha_myisammrg::index_read(byte * buf, const byte * key, + uint key_len, enum ha_rkey_function find_flag) +{ + statistic_increment(table->in_use->status_var.ha_read_key_count, + &LOCK_status); + int error=myrg_rkey(file,buf,active_index, key, key_len, find_flag); + table->status=error ? STATUS_NOT_FOUND: 0; + return error; +} + +int ha_myisammrg::index_read_idx(byte * buf, uint index, const byte * key, + uint key_len, enum ha_rkey_function find_flag) +{ + statistic_increment(table->in_use->status_var.ha_read_key_count, + &LOCK_status); + int error=myrg_rkey(file,buf,index, key, key_len, find_flag); + table->status=error ? STATUS_NOT_FOUND: 0; + return error; +} + +int ha_myisammrg::index_read_last(byte * buf, const byte * key, uint key_len) +{ + statistic_increment(table->in_use->status_var.ha_read_key_count, + &LOCK_status); + int error=myrg_rkey(file,buf,active_index, key, key_len, + HA_READ_PREFIX_LAST); + table->status=error ? STATUS_NOT_FOUND: 0; + return error; +} + +int ha_myisammrg::index_next(byte * buf) +{ + statistic_increment(table->in_use->status_var.ha_read_next_count, + &LOCK_status); + int error=myrg_rnext(file,buf,active_index); + table->status=error ? STATUS_NOT_FOUND: 0; + return error; +} + +int ha_myisammrg::index_prev(byte * buf) +{ + statistic_increment(table->in_use->status_var.ha_read_prev_count, + &LOCK_status); + int error=myrg_rprev(file,buf, active_index); + table->status=error ? STATUS_NOT_FOUND: 0; + return error; +} + +int ha_myisammrg::index_first(byte * buf) +{ + statistic_increment(table->in_use->status_var.ha_read_first_count, + &LOCK_status); + int error=myrg_rfirst(file, buf, active_index); + table->status=error ? STATUS_NOT_FOUND: 0; + return error; +} + +int ha_myisammrg::index_last(byte * buf) +{ + statistic_increment(table->in_use->status_var.ha_read_last_count, + &LOCK_status); + int error=myrg_rlast(file, buf, active_index); + table->status=error ? STATUS_NOT_FOUND: 0; + return error; +} + +int ha_myisammrg::index_next_same(byte * buf, + const byte *key __attribute__((unused)), + uint length __attribute__((unused))) +{ + statistic_increment(table->in_use->status_var.ha_read_next_count, + &LOCK_status); + int error=myrg_rnext_same(file,buf); + table->status=error ? STATUS_NOT_FOUND: 0; + return error; +} + + +int ha_myisammrg::rnd_init(bool scan) +{ + return myrg_reset(file); +} + + +int ha_myisammrg::rnd_next(byte *buf) +{ + statistic_increment(table->in_use->status_var.ha_read_rnd_next_count, + &LOCK_status); + int error=myrg_rrnd(file, buf, HA_OFFSET_ERROR); + table->status=error ? STATUS_NOT_FOUND: 0; + return error; +} + + +int ha_myisammrg::rnd_pos(byte * buf, byte *pos) +{ + statistic_increment(table->in_use->status_var.ha_read_rnd_count, + &LOCK_status); + int error=myrg_rrnd(file, buf, my_get_ptr(pos,ref_length)); + table->status=error ? STATUS_NOT_FOUND: 0; + return error; +} + +void ha_myisammrg::position(const byte *record) +{ + ulonglong position= myrg_position(file); + my_store_ptr(ref, ref_length, (my_off_t) position); +} + + +ha_rows ha_myisammrg::records_in_range(uint inx, key_range *min_key, + key_range *max_key) +{ + return (ha_rows) myrg_records_in_range(file, (int) inx, min_key, max_key); +} + + +void ha_myisammrg::info(uint flag) +{ + MYMERGE_INFO info; + (void) myrg_status(file,&info,flag); + /* + The following fails if one has not compiled MySQL with -DBIG_TABLES + and one has more than 2^32 rows in the merge tables. + */ + stats.records = (ha_rows) info.records; + stats.deleted = (ha_rows) info.deleted; +#if !defined(BIG_TABLES) || SIZEOF_OFF_T == 4 + if ((info.records >= (ulonglong) 1 << 32) || + (info.deleted >= (ulonglong) 1 << 32)) + table->s->crashed= 1; +#endif + stats.data_file_length=info.data_file_length; + errkey = info.errkey; + table->s->keys_in_use.set_prefix(table->s->keys); + table->s->db_options_in_use= info.options; + stats.mean_rec_length= info.reclength; + + /* + The handler::block_size is used all over the code in index scan cost + calculations. It is used to get number of disk seeks required to + retrieve a number of index tuples. + If the merge table has N underlying tables, then (assuming underlying + tables have equal size, the only "simple" approach we can use) + retrieving X index records from a merge table will require N times more + disk seeks compared to doing the same on a MyISAM table with equal + number of records. + In the edge case (file_tables > myisam_block_size) we'll get + block_size==0, and index calculation code will act as if we need one + disk seek to retrieve one index tuple. + + TODO: In 5.2 index scan cost calculation will be factored out into a + virtual function in class handler and we'll be able to remove this hack. + */ + stats.block_size= 0; + if (file->tables) + stats.block_size= myisam_block_size / file->tables; + + stats.update_time= 0; +#if SIZEOF_OFF_T > 4 + ref_length=6; // Should be big enough +#else + ref_length=4; // Can't be > than my_off_t +#endif + if (flag & HA_STATUS_CONST) + { + if (table->s->key_parts && info.rec_per_key) + memcpy((char*) table->key_info[0].rec_per_key, + (char*) info.rec_per_key, + sizeof(table->key_info[0].rec_per_key)*table->s->key_parts); + } +} + + +int ha_myisammrg::extra(enum ha_extra_function operation) +{ + /* As this is just a mapping, we don't have to force the underlying + tables to be closed */ + if (operation == HA_EXTRA_FORCE_REOPEN || + operation == HA_EXTRA_PREPARE_FOR_DELETE) + return 0; + return myrg_extra(file,operation,0); +} + +int ha_myisammrg::reset(void) +{ + return myrg_reset(file); +} + +/* To be used with WRITE_CACHE, EXTRA_CACHE and BULK_INSERT_BEGIN */ + +int ha_myisammrg::extra_opt(enum ha_extra_function operation, ulong cache_size) +{ + if ((specialflag & SPECIAL_SAFE_MODE) && operation == HA_EXTRA_WRITE_CACHE) + return 0; + return myrg_extra(file, operation, (void*) &cache_size); +} + +int ha_myisammrg::external_lock(THD *thd, int lock_type) +{ + return myrg_lock_database(file,lock_type); +} + +uint ha_myisammrg::lock_count(void) const +{ + return file->tables; +} + + +THR_LOCK_DATA **ha_myisammrg::store_lock(THD *thd, + THR_LOCK_DATA **to, + enum thr_lock_type lock_type) +{ + MYRG_TABLE *open_table; + + for (open_table=file->open_tables ; + open_table != file->end_table ; + open_table++) + { + *(to++)= &open_table->table->lock; + if (lock_type != TL_IGNORE && open_table->table->lock.type == TL_UNLOCK) + open_table->table->lock.type=lock_type; + } + return to; +} + + +/* Find out database name and table name from a filename */ + +static void split_file_name(const char *file_name, + LEX_STRING *db, LEX_STRING *name) +{ + uint dir_length, prefix_length; + char buff[FN_REFLEN]; + + db->length= 0; + strmake(buff, file_name, sizeof(buff)-1); + dir_length= dirname_length(buff); + if (dir_length > 1) + { + /* Get database */ + buff[dir_length-1]= 0; // Remove end '/' + prefix_length= dirname_length(buff); + db->str= (char*) file_name+ prefix_length; + db->length= dir_length - prefix_length -1; + } + name->str= (char*) file_name+ dir_length; + name->length= (uint) (fn_ext(name->str) - name->str); +} + + +void ha_myisammrg::update_create_info(HA_CREATE_INFO *create_info) +{ + DBUG_ENTER("ha_myisammrg::update_create_info"); + + if (!(create_info->used_fields & HA_CREATE_USED_UNION)) + { + MYRG_TABLE *open_table; + THD *thd=current_thd; + + create_info->merge_list.next= &create_info->merge_list.first; + create_info->merge_list.elements=0; + + for (open_table=file->open_tables ; + open_table != file->end_table ; + open_table++) + { + TABLE_LIST *ptr; + LEX_STRING db, name; + + if (!(ptr = (TABLE_LIST *) thd->calloc(sizeof(TABLE_LIST)))) + goto err; + split_file_name(open_table->table->filename, &db, &name); + if (!(ptr->table_name= thd->strmake(name.str, name.length))) + goto err; + if (db.length && !(ptr->db= thd->strmake(db.str, db.length))) + goto err; + + create_info->merge_list.elements++; + (*create_info->merge_list.next) = (byte*) ptr; + create_info->merge_list.next= (byte**) &ptr->next_local; + } + *create_info->merge_list.next=0; + } + if (!(create_info->used_fields & HA_CREATE_USED_INSERT_METHOD)) + { + create_info->merge_insert_method = file->merge_insert_method; + } + DBUG_VOID_RETURN; + +err: + create_info->merge_list.elements=0; + create_info->merge_list.first=0; + DBUG_VOID_RETURN; +} + + +int ha_myisammrg::create(const char *name, register TABLE *form, + HA_CREATE_INFO *create_info) +{ + char buff[FN_REFLEN]; + const char **table_names, **pos; + TABLE_LIST *tables= (TABLE_LIST*) create_info->merge_list.first; + THD *thd= current_thd; + uint dirlgt= dirname_length(name); + DBUG_ENTER("ha_myisammrg::create"); + + if (!(table_names= (const char**) + thd->alloc((create_info->merge_list.elements+1) * sizeof(char*)))) + DBUG_RETURN(HA_ERR_OUT_OF_MEM); + for (pos= table_names; tables; tables= tables->next_local) + { + const char *table_name; + TABLE *tbl= 0; + if (create_info->options & HA_LEX_CREATE_TMP_TABLE) + tbl= find_temporary_table(thd, tables); + if (!tbl) + { + /* + Construct the path to the MyISAM table. Try to meet two conditions: + 1.) Allow to include MyISAM tables from different databases, and + 2.) allow for moving DATADIR around in the file system. + The first means that we need paths in the .MRG file. The second + means that we should not have absolute paths in the .MRG file. + The best, we can do, is to use 'mysql_data_home', which is '.' + in mysqld and may be an absolute path in an embedded server. + This means that it might not be possible to move the DATADIR of + an embedded server without changing the paths in the .MRG file. + */ + uint length= build_table_filename(buff, sizeof(buff), + tables->db, tables->table_name, "", 0); + /* + If a MyISAM table is in the same directory as the MERGE table, + we use the table name without a path. This means that the + DATADIR can easily be moved even for an embedded server as long + as the MyISAM tables are from the same database as the MERGE table. + */ + if ((dirname_length(buff) == dirlgt) && ! memcmp(buff, name, dirlgt)) + table_name= tables->table_name; + else + if (! (table_name= thd->strmake(buff, length))) + DBUG_RETURN(HA_ERR_OUT_OF_MEM); + } + else + table_name= tbl->s->path.str; + *pos++= table_name; + } + *pos=0; + DBUG_RETURN(myrg_create(fn_format(buff,name,"","", + MY_RESOLVE_SYMLINKS| + MY_UNPACK_FILENAME|MY_APPEND_EXT), + table_names, + create_info->merge_insert_method, + (my_bool) 0)); +} + + +void ha_myisammrg::append_create_info(String *packet) +{ + const char *current_db; + uint db_length; + THD *thd= current_thd; + MYRG_TABLE *open_table, *first; + + if (file->merge_insert_method != MERGE_INSERT_DISABLED) + { + packet->append(STRING_WITH_LEN(" INSERT_METHOD=")); + packet->append(get_type(&merge_insert_method,file->merge_insert_method-1)); + } + packet->append(STRING_WITH_LEN(" UNION=(")); + + current_db= table->s->db.str; + db_length= table->s->db.length; + + for (first=open_table=file->open_tables ; + open_table != file->end_table ; + open_table++) + { + LEX_STRING db, name; + split_file_name(open_table->table->filename, &db, &name); + if (open_table != first) + packet->append(','); + /* Report database for mapped table if it isn't in current database */ + if (db.length && + (db_length != db.length || + strncmp(current_db, db.str, db.length))) + { + append_identifier(thd, packet, db.str, db.length); + packet->append('.'); + } + append_identifier(thd, packet, name.str, name.length); + } + packet->append(')'); +} + + +bool ha_myisammrg::check_if_incompatible_data(HA_CREATE_INFO *info, + uint table_changes) +{ + /* + For myisammrg, we should always re-generate the mapping file as this + is trivial to do + */ + return COMPATIBLE_DATA_NO; +} + +static int myisammrg_init() +{ + myisammrg_hton.state=have_merge_db; + myisammrg_hton.db_type=DB_TYPE_MRG_MYISAM; + myisammrg_hton.create=myisammrg_create_handler; + myisammrg_hton.panic=myrg_panic; + myisammrg_hton.flags= HTON_CAN_RECREATE; + return 0; +} + +struct st_mysql_storage_engine myisammrg_storage_engine= +{ MYSQL_HANDLERTON_INTERFACE_VERSION, &myisammrg_hton }; + +mysql_declare_plugin(myisammrg) +{ + MYSQL_STORAGE_ENGINE_PLUGIN, + &myisammrg_storage_engine, + "MRG_MYISAM", + "MySQL AB", + "Collection of identical MyISAM tables", + myisammrg_init, /* Plugin Init */ + NULL, /* Plugin Deinit */ + 0x0100, /* 1.0 */ + 0 +} +mysql_declare_plugin_end; diff --git a/storage/myisammrg/ha_myisammrg.h b/storage/myisammrg/ha_myisammrg.h new file mode 100644 index 00000000000..d58a3523c26 --- /dev/null +++ b/storage/myisammrg/ha_myisammrg.h @@ -0,0 +1,88 @@ +/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB + + 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; either version 2 of the License, or + (at your option) any later version. + + 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 */ + + +#ifdef USE_PRAGMA_INTERFACE +#pragma interface /* gcc class implementation */ +#endif + +/* class for the the myisam merge handler */ + +#include <myisammrg.h> + +class ha_myisammrg: public handler +{ + MYRG_INFO *file; + + public: + ha_myisammrg(TABLE_SHARE *table_arg); + ~ha_myisammrg() {} + const char *table_type() const { return "MRG_MyISAM"; } + const char **bas_ext() const; + const char *index_type(uint key_number); + ulonglong table_flags() const + { + return (HA_REC_NOT_IN_SEQ | HA_AUTO_PART_KEY | HA_NO_TRANSACTIONS | + HA_NULL_IN_KEY | HA_CAN_INDEX_BLOBS | HA_FILE_BASED | + HA_CAN_INSERT_DELAYED | HA_ANY_INDEX_MAY_BE_UNIQUE | + HA_CAN_BIT_FIELD | HA_NO_COPY_ON_ALTER); + } + ulong index_flags(uint inx, uint part, bool all_parts) const + { + return ((table_share->key_info[inx].algorithm == HA_KEY_ALG_FULLTEXT) ? + 0 : HA_READ_NEXT | HA_READ_PREV | HA_READ_RANGE | + HA_READ_ORDER | HA_KEYREAD_ONLY); + } + uint max_supported_keys() const { return MI_MAX_KEY; } + uint max_supported_key_length() const { return MI_MAX_KEY_LENGTH; } + uint max_supported_key_part_length() const { return MI_MAX_KEY_LENGTH; } + double scan_time() + { return ulonglong2double(stats.data_file_length) / IO_SIZE + file->tables; } + + int open(const char *name, int mode, uint test_if_locked); + int close(void); + int write_row(byte * buf); + int update_row(const byte * old_data, byte * new_data); + int delete_row(const byte * buf); + int index_read(byte * buf, const byte * key, + uint key_len, enum ha_rkey_function find_flag); + int index_read_idx(byte * buf, uint idx, const byte * key, + uint key_len, enum ha_rkey_function find_flag); + int index_read_last(byte * buf, const byte * key, uint key_len); + int index_next(byte * buf); + int index_prev(byte * buf); + int index_first(byte * buf); + int index_last(byte * buf); + int index_next_same(byte *buf, const byte *key, uint keylen); + int rnd_init(bool scan); + int rnd_next(byte *buf); + int rnd_pos(byte * buf, byte *pos); + void position(const byte *record); + ha_rows records_in_range(uint inx, key_range *min_key, key_range *max_key); + void info(uint); + int reset(void); + int extra(enum ha_extra_function operation); + int extra_opt(enum ha_extra_function operation, ulong cache_size); + int external_lock(THD *thd, int lock_type); + uint lock_count(void) const; + int create(const char *name, TABLE *form, HA_CREATE_INFO *create_info); + THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to, + enum thr_lock_type lock_type); + void update_create_info(HA_CREATE_INFO *create_info); + void append_create_info(String *packet); + MYRG_INFO *myrg_info() { return file; } + bool check_if_incompatible_data(HA_CREATE_INFO *info, uint table_changes); +}; diff --git a/storage/myisammrg/plug.in b/storage/myisammrg/plug.in new file mode 100644 index 00000000000..b4b2af8d984 --- /dev/null +++ b/storage/myisammrg/plug.in @@ -0,0 +1,5 @@ +MYSQL_STORAGE_ENGINE(myisammrg,no,[MyISAM MERGE Engine], + [Merge multiple MySQL tables into one]) +MYSQL_PLUGIN_DIRECTORY(myisammrg,[storage/myisammrg]) +MYSQL_PLUGIN_STATIC(myisammrg, [libmyisammrg.a]) +MYSQL_PLUGIN_MANDATORY(myisammrg) |