function DatabaseSchema_sqlite::renameTable

Overrides DatabaseSchema::renameTable

File

includes/database/sqlite/schema.inc, line 233

Class

DatabaseSchema_sqlite

Code

public function renameTable($table, $new_name) {
    if (!$this->tableExists($table)) {
        throw new DatabaseSchemaObjectDoesNotExistException(t("Cannot rename @table to @table_new: table @table doesn't exist.", array(
            '@table' => $table,
            '@table_new' => $new_name,
        )));
    }
    if ($this->tableExists($new_name)) {
        throw new DatabaseSchemaObjectExistsException(t("Cannot rename @table to @table_new: table @table_new already exists.", array(
            '@table' => $table,
            '@table_new' => $new_name,
        )));
    }
    $schema = $this->introspectSchema($table);
    // SQLite doesn't allow you to rename tables outside of the current
    // database. So the syntax '...RENAME TO database.table' would fail.
    // So we must determine the full table name here rather than surrounding
    // the table with curly braces incase the db_prefix contains a reference
    // to a database outside of our existing database.
    $info = $this->getPrefixInfo($new_name);
    $this->connection
        ->query('ALTER TABLE {' . $table . '} RENAME TO ' . $info['table']);
    // Drop the indexes, there is no RENAME INDEX command in SQLite.
    if (!empty($schema['unique keys'])) {
        foreach ($schema['unique keys'] as $key => $fields) {
            $this->dropIndex($table, $key);
        }
    }
    if (!empty($schema['indexes'])) {
        foreach ($schema['indexes'] as $index => $fields) {
            $this->dropIndex($table, $index);
        }
    }
    // Recreate the indexes.
    $statements = $this->createIndexSql($new_name, $schema);
    foreach ($statements as $statement) {
        $this->connection
            ->query($statement);
    }
}