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Merge dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.0-opt

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into  dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.1-opt
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gkodinov@dl145s.mysql.com
2006-10-19 16:43:46 +02:00
parent ea8ba03556 c77fae407b
commit aaed398254
39 changed files with 1022 additions and 167 deletions
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198
sql/sql_rename.cc
View File

@ -125,96 +125,142 @@ static TABLE_LIST *reverse_table_list(TABLE_LIST *table_list)
}
/*
Rename a single table or a view
SYNPOSIS
do_rename()
thd Thread handle
ren_table A table/view to be renamed
new_db The database to which the table to be moved to
new_table_name The new table/view name
new_table_alias The new table/view alias
skip_error Whether to skip error
DESCRIPTION
Rename a single table or a view.
RETURN
false Ok
true rename failed
*/
bool
do_rename(THD *thd, TABLE_LIST *ren_table, char *new_db, char *new_table_name,
char *new_table_alias, bool skip_error)
{
int rc= 1;
char name[FN_REFLEN];
const char *new_alias, *old_alias;
frm_type_enum frm_type;
enum legacy_db_type table_type;
DBUG_ENTER("do_rename");
if (lower_case_table_names == 2)
{
old_alias= ren_table->alias;
new_alias= new_table_alias;
}
else
{
old_alias= ren_table->table_name;
new_alias= new_table_table_name;
}
build_table_filename(name, sizeof(name),
new_db, new_alias, reg_ext, 0);
if (!access(name,F_OK))
{
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), new_alias);
DBUG_RETURN(1); // This can't be skipped
}
build_table_filename(name, sizeof(name),
ren_table->db, old_alias, reg_ext, 0);
frm_type= mysql_frm_type(thd, name, &table_type);
switch (frm_type)
{
case FRMTYPE_TABLE:
{
if (!(rc= mysql_rename_table(table_type, ren_table->db, old_alias,
new_db, new_alias)))
{
if ((rc= Table_triggers_list::change_table_name(thd, ren_table->db,
old_alias,
new_db,
new_alias)))
{
/*
We've succeeded in renaming table's .frm and in updating
corresponding handler data, but have failed to update table's
triggers appropriately. So let us revert operations on .frm
and handler's data and report about failure to rename table.
*/
(void) mysql_rename_table(ha_resolve_by_legacy_type(thd,
table_type),
new_db, new_alias,
ren_table->db, old_alias, 0);
}
}
}
break;
}
case FRMTYPE_VIEW:
/* change of schema is not allowed */
if (strcmp(ren_table->db, new_db))
my_error(ER_FORBID_SCHEMA_CHANGE, MYF(0), ren_table->db,
new_db);
else
rc= mysql_rename_view(thd, new_alias, ren_table);
break;
default:
DBUG_ASSERT(0); // should never happen
case FRMTYPE_ERROR:
my_error(ER_FILE_NOT_FOUND, MYF(0), name, my_errno);
break;
}
if (rc && !skip_error)
DBUG_RETURN(1);
DBUG_RETURN(0);
}
/*
Rename all tables in list; Return pointer to wrong entry if something goes
wrong. Note that the table_list may be empty!
*/
/*
Rename tables/views in the list
SYNPOSIS
rename_tables()
thd Thread handle
table_list List of tables to rename
skip_error Whether to skip errors
DESCRIPTION
Take a table/view name from and odd list element and rename it to a
the name taken from list element+1. Note that the table_list may be
empty.
RETURN
false Ok
true rename failed
*/
static TABLE_LIST *
rename_tables(THD *thd, TABLE_LIST *table_list, bool skip_error)
{
TABLE_LIST *ren_table,*new_table;
frm_type_enum frm_type;
enum legacy_db_type table_type;
TABLE_LIST *ren_table,*new_table, *tmp_table;
DBUG_ENTER("rename_tables");
for (ren_table= table_list; ren_table; ren_table= new_table->next_local)
{
int rc= 1;
char name[FN_REFLEN];
const char *new_alias, *old_alias;
new_table= ren_table->next_local;
if (lower_case_table_names == 2)
{
old_alias= ren_table->alias;
new_alias= new_table->alias;
}
else
{
old_alias= ren_table->table_name;
new_alias= new_table->table_name;
}
build_table_filename(name, sizeof(name),
new_table->db, new_alias, reg_ext, 0);
if (!access(name,F_OK))
{
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), new_alias);
DBUG_RETURN(ren_table); // This can't be skipped
}
build_table_filename(name, sizeof(name),
ren_table->db, old_alias, reg_ext, 0);
frm_type= mysql_frm_type(thd, name, &table_type);
switch (frm_type)
{
case FRMTYPE_TABLE:
{
if (table_type == DB_TYPE_UNKNOWN)
my_error(ER_FILE_NOT_FOUND, MYF(0), name, my_errno);
else
{
if (!(rc= mysql_rename_table(ha_resolve_by_legacy_type(thd,
table_type),
ren_table->db, old_alias,
new_table->db, new_alias, 0)))
{
if ((rc= Table_triggers_list::change_table_name(thd, ren_table->db,
old_alias,
new_table->db,
new_alias)))
{
/*
We've succeeded in renaming table's .frm and in updating
corresponding handler data, but have failed to update table's
triggers appropriately. So let us revert operations on .frm
and handler's data and report about failure to rename table.
*/
(void) mysql_rename_table(ha_resolve_by_legacy_type(thd,
table_type),
new_table->db, new_alias,
ren_table->db, old_alias, 0);
}
}
}
break;
}
case FRMTYPE_VIEW:
/* change of schema is not allowed */
if (strcmp(ren_table->db, new_table->db))
my_error(ER_FORBID_SCHEMA_CHANGE, MYF(0), ren_table->db,
new_table->db);
else
rc= mysql_rename_view(thd, new_alias, ren_table);
break;
default:
DBUG_ASSERT(0); // should never happen
case FRMTYPE_ERROR:
my_error(ER_FILE_NOT_FOUND, MYF(0), name, my_errno);
break;
}
if (rc && !skip_error)
if (do_rename(thd, ren_table, new_table->db, new_table->table_name,
new_table->alias, skip_error))
DBUG_RETURN(ren_table);
}
DBUG_RETURN(0);