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<?php namespace Toolset\ChangeSet; /** * Interface Change * * Represents any change to be made to a Layer. A Change resides in a ChangeSet which is used by the SwfEngineClient to * loop around any potential changes and call isValid() on them before using getChanges() to create a valid request * * @package ChangeSet */ interface Change { /** * The object implementing this method has the responsibility of validating it's own data * * @return boolean */ public function isValid(); /** * Each change MUST have an id - if it doesn't, there's no way to keep track of unique changes * * @return mixed */ public function getId(); /** * This method must return an array of the strings to be sent in the request to the swf engine * * @return array */ public function getRequestFields(); /** * {@inheritdoc} * * Each change must return the name of itself in the case an exception needs to be thrown on an invalid state * * @return string */ public function __toString(); }