diff options
Diffstat (limited to 'sql/ha_myisam.cc')
| -rw-r--r-- | sql/ha_myisam.cc | 49 |
1 files changed, 30 insertions, 19 deletions
diff --git a/sql/ha_myisam.cc b/sql/ha_myisam.cc index 77d541bfdfb..78ac9f3b309 100644 --- a/sql/ha_myisam.cc +++ b/sql/ha_myisam.cc @@ -777,6 +777,14 @@ int ha_myisam::index_read_idx(byte * buf, uint index, const byte * key, return error; } +int ha_myisam::index_read_last(byte * buf, const byte * key, uint key_len) +{ + statistic_increment(ha_read_key_count,&LOCK_status); + int error=mi_rkey(file,buf,active_index, key, key_len, HA_READ_PREFIX_LAST); + table->status=error ? STATUS_NOT_FOUND: 0; + return error; +} + int ha_myisam::index_next(byte * buf) { statistic_increment(ha_read_next_count,&LOCK_status); @@ -973,7 +981,7 @@ void ha_myisam::update_create_info(HA_CREATE_INFO *create_info) } -int ha_myisam::create(const char *name, register TABLE *form, +int ha_myisam::create(const char *name, register TABLE *table, HA_CREATE_INFO *info) { int error; @@ -985,20 +993,20 @@ int ha_myisam::create(const char *name, register TABLE *form, MI_KEYDEF *keydef; MI_COLUMNDEF *recinfo,*recinfo_pos; MI_KEYSEG *keyseg; - uint options=form->db_options_in_use; + uint options=table->db_options_in_use; DBUG_ENTER("ha_myisam::create"); type=HA_KEYTYPE_BINARY; // Keep compiler happy if (!(my_multi_malloc(MYF(MY_WME), - &recinfo,(form->fields*2+2)*sizeof(MI_COLUMNDEF), - &keydef, form->keys*sizeof(MI_KEYDEF), + &recinfo,(table->fields*2+2)*sizeof(MI_COLUMNDEF), + &keydef, table->keys*sizeof(MI_KEYDEF), &keyseg, - ((form->key_parts + form->keys) * sizeof(MI_KEYSEG)), + ((table->key_parts + table->keys) * sizeof(MI_KEYSEG)), 0))) DBUG_RETURN(1); - pos=form->key_info; - for (i=0; i < form->keys ; i++, pos++) + pos=table->key_info; + for (i=0; i < table->keys ; i++, pos++) { keydef[i].flag= (pos->flags & (HA_NOSAME | HA_FULLTEXT)); keydef[i].seg=keyseg; @@ -1041,7 +1049,7 @@ int ha_myisam::create(const char *name, register TABLE *form, { keydef[i].seg[j].null_bit=field->null_bit; keydef[i].seg[j].null_pos= (uint) (field->null_ptr- - (uchar*) form->record[0]); + (uchar*) table->record[0]); } else { @@ -1059,19 +1067,19 @@ int ha_myisam::create(const char *name, register TABLE *form, keydef[i].seg[j].flag|=HA_BLOB_PART; /* save number of bytes used to pack length */ keydef[i].seg[j].bit_start= (uint) (field->pack_length() - - form->blob_ptr_size); + table->blob_ptr_size); } } keyseg+=pos->key_parts; } recpos=0; recinfo_pos=recinfo; - while (recpos < (uint) form->reclength) + while (recpos < (uint) table->reclength) { Field **field,*found=0; - minpos=form->reclength; length=0; + minpos=table->reclength; length=0; - for (field=form->field ; *field ; field++) + for (field=table->field ; *field ; field++) { if ((fieldpos=(*field)->offset()) >= recpos && fieldpos <= minpos) @@ -1117,7 +1125,7 @@ int ha_myisam::create(const char *name, register TABLE *form, { recinfo_pos->null_bit=found->null_bit; recinfo_pos->null_pos= (uint) (found->null_ptr- - (uchar*) form->record[0]); + (uchar*) table->record[0]); } else { @@ -1132,20 +1140,23 @@ int ha_myisam::create(const char *name, register TABLE *form, } MI_CREATE_INFO create_info; bzero((char*) &create_info,sizeof(create_info)); - create_info.max_rows=form->max_rows; - create_info.reloc_rows=form->min_rows; + create_info.max_rows=table->max_rows; + create_info.reloc_rows=table->min_rows; create_info.auto_increment=(info->auto_increment_value ? info->auto_increment_value -1 : (ulonglong) 0); - create_info.data_file_length=(ulonglong) form->max_rows*form->avg_row_length; + create_info.data_file_length= ((ulonglong) table->max_rows * + table->avg_row_length); create_info.raid_type=info->raid_type; - create_info.raid_chunks=info->raid_chunks ? info->raid_chunks : RAID_DEFAULT_CHUNKS; - create_info.raid_chunksize=info->raid_chunksize ? info->raid_chunksize : RAID_DEFAULT_CHUNKSIZE; + create_info.raid_chunks= (info->raid_chunks ? info->raid_chunks : + RAID_DEFAULT_CHUNKS); + create_info.raid_chunksize=(info->raid_chunksize ? info->raid_chunksize : + RAID_DEFAULT_CHUNKSIZE); create_info.data_file_name= info->data_file_name; create_info.index_file_name=info->index_file_name; error=mi_create(fn_format(buff,name,"","",2+4), - form->keys,keydef, + table->keys,keydef, (uint) (recinfo_pos-recinfo), recinfo, 0, (MI_UNIQUEDEF*) 0, &create_info, |