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-rw-r--r--storage/myisammrg/myrg_info.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/storage/myisammrg/myrg_info.c b/storage/myisammrg/myrg_info.c
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+++ b/storage/myisammrg/myrg_info.c
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+/* Copyright (c) 2000, 2001, 2005, 2006 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 02110-1335 USA */
+
+#include "myrg_def.h"
+
+ulonglong myrg_position(MYRG_INFO *info)
+{
+ MYRG_TABLE *current_table;
+
+ if (!(current_table = info->current_table) &&
+ info->open_tables != info->end_table)
+ current_table = info->open_tables;
+ return current_table ?
+ current_table->table->lastpos + current_table->file_offset :
+ ~(ulonglong) 0;
+}
+
+int myrg_status(MYRG_INFO *info,register MYMERGE_INFO *x,int flag)
+{
+ MYRG_TABLE *current_table;
+ DBUG_ENTER("myrg_status");
+
+ if (!(current_table = info->current_table) &&
+ info->open_tables != info->end_table)
+ current_table = info->open_tables;
+ x->recpos = info->current_table ?
+ info->current_table->table->lastpos + info->current_table->file_offset :
+ (ulong) -1L;
+ if (flag != HA_STATUS_POS)
+ {
+ MYRG_TABLE *file;
+
+ info->records=info->del=info->data_file_length=0;
+ for (file=info->open_tables ; file != info->end_table ; file++)
+ {
+ file->file_offset=info->data_file_length;
+ info->data_file_length+=file->table->s->state.state.data_file_length;
+ info->records+=file->table->s->state.state.records;
+ info->del+=file->table->s->state.state.del;
+ DBUG_PRINT("info2",("table: %s, offset: %lu",
+ file->table->filename,(ulong) file->file_offset));
+ }
+ x->records= info->records;
+ x->deleted= info->del;
+ x->data_file_length= info->data_file_length;
+ x->reclength= info->reclength;
+ x->options= info->options;
+ if (current_table)
+ {
+ /*
+ errkey is set to the index number of the myisam tables. But
+ since the MERGE table can have less keys than the MyISAM
+ tables, errkey cannot be be used as an index into the key_info
+ on the server. This value will be overwritten with MAX_KEY by
+ the MERGE engine.
+ */
+ x->errkey= current_table->table->errkey;
+ /*
+ Calculate the position of the duplicate key to be the sum of the
+ offset of the myisam file and the offset into the file at which
+ the duplicate key is located.
+ */
+ x->dupp_key_pos= current_table->file_offset + current_table->table->dupp_key_pos;
+ }
+ else
+ {
+ x->errkey= 0;
+ x->dupp_key_pos= 0;
+ }
+ x->rec_per_key = info->rec_per_key_part;
+ }
+ DBUG_RETURN(0);
+}