/** * alter an existing table * * @param string $name name of the table that is intended to be changed. * @param array $changes associative array that contains the details of each type * of change that is intended to be performed. The types of * changes that are currently supported are defined as follows: * * name * * New name for the table. * * add * * Associative array with the names of fields to be added as * indexes of the array. The value of each entry of the array * should be set to another associative array with the properties * of the fields to be added. The properties of the fields should * be the same as defined by the Metabase parser. * * * remove * * Associative array with the names of fields to be removed as indexes * of the array. Currently the values assigned to each entry are ignored. * An empty array should be used for future compatibility. * * rename * * Associative array with the names of fields to be renamed as indexes * of the array. The value of each entry of the array should be set to * another associative array with the entry named name with the new * field name and the entry named Declaration that is expected to contain * the portion of the field declaration already in DBMS specific SQL code * as it is used in the CREATE TABLE statement. * * change * * Associative array with the names of the fields to be changed as indexes * of the array. Keep in mind that if it is intended to change either the * name of a field and any other properties, the change array entries * should have the new names of the fields as array indexes. * * The value of each entry of the array should be set to another associative * array with the properties of the fields to that are meant to be changed as * array entries. These entries should be assigned to the new values of the * respective properties. The properties of the fields should be the same * as defined by the Metabase parser. * * Example * array( * 'name' => 'userlist', * 'add' => array( * 'quota' => array( * 'type' => 'integer', * 'unsigned' => 1 * ) * ), * 'remove' => array( * 'file_limit' => array(), * 'time_limit' => array() * ), * 'change' => array( * 'name' => array( * 'length' => '20', * 'definition' => array( * 'type' => 'text', * 'length' => 20, * ), * ) * ), * 'rename' => array( * 'sex' => array( * 'name' => 'gender', * 'definition' => array( * 'type' => 'text', * 'length' => 1, * 'default' => 'M', * ), * ) * ) * ) * * @param boolean $check indicates whether the function should just check if the DBMS driver * can perform the requested table alterations if the value is true or * actually perform them otherwise. * @return void */ public function alterTable($name, array $changes, $check = false) { foreach ($changes as $changeName => $change) { switch ($changeName) { case 'add': break; case 'remove': break; case 'name': case 'rename': case 'change': default: throw \Doctrine\Common\DoctrineException::alterTableChangeNotSupported($changeName); } } $query = ''; if (!empty($changes['add']) && is_array($changes['add'])) { foreach ($changes['add'] as $fieldName => $field) { if ($query) { $query .= ', '; } $query .= 'ADD ' . $this->getDeclaration($fieldName, $field); } } if (!empty($changes['remove']) && is_array($changes['remove'])) { foreach ($changes['remove'] as $fieldName => $field) { if ($query) { $query .= ', '; } $query .= 'DROP COLUMN ' . $fieldName; } } if (!$query) { return false; } return $this->conn->exec('ALTER TABLE ' . $name . ' ' . $query); }