DatabaseSchema_sqlite::addPrimaryKey

Add a primary key.

@throws DatabaseSchemaObjectExistsException If the specified table already has a primary key.

Parameters

$table: The table to be altered.

$fields: Fields for the primary key.

Overrides DatabaseSchema::addPrimaryKey

Throws

DatabaseSchemaObjectDoesNotExistException If the specified table doesn't exist.

File

includes/database/sqlite/schema.inc, line 618

Database schema code for SQLite databases.

Code

public function addPrimaryKey($table, $fields) {
  if (!$this->tableExists($table)) {
    throw new DatabaseSchemaObjectDoesNotExistException(t("Cannot add primary key to table %table: table doesn't exist.", array('%table' => $table)));
  }

  $old_schema = $this->introspectSchema($table);
  $new_schema = $old_schema;

  if (!empty($new_schema['primary key'])) {
    throw new DatabaseSchemaObjectExistsException(t("Cannot add primary key to table %table: primary key already exists.", array('%table' => $table)));
  }

  $new_schema['primary key'] = $fields;
  $this->alterTable($table, $old_schema, $new_schema);
}