function DatabaseSchema_sqlite::addUniqueKey

Overrides DatabaseSchema::addUniqueKey

File

includes/database/sqlite/schema.inc, line 592

Class

DatabaseSchema_sqlite

Code

public function addUniqueKey($table, $name, $fields) {
    if (!$this->tableExists($table)) {
        throw new DatabaseSchemaObjectDoesNotExistException(t("Cannot add unique key @name to table @table: table doesn't exist.", array(
            '@table' => $table,
            '@name' => $name,
        )));
    }
    if ($this->indexExists($table, $name)) {
        throw new DatabaseSchemaObjectExistsException(t("Cannot add unique key @name to table @table: unique key already exists.", array(
            '@table' => $table,
            '@name' => $name,
        )));
    }
    $schema['unique keys'][$name] = $fields;
    $statements = $this->createIndexSql($table, $schema);
    foreach ($statements as $statement) {
        $this->connection
            ->query($statement);
    }
}