// Copyright 2006 The Apache Software Foundation | |
// | |
// Licensed under the Apache License, Version 2.0 (the "License"); | |
// you may not use this file except in compliance with the License. | |
// You may obtain a copy of the License at | |
// | |
// http://www.apache.org/licenses/LICENSE-2.0 | |
// | |
// Unless required by applicable law or agreed to in writing, software | |
// distributed under the License is distributed on an "AS IS" BASIS, | |
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
// See the License for the specific language governing permissions and | |
// limitations under the License. | |
package org.apache.tapestry5.services; | |
/** | |
* Represents a previously stored change to a persistent field, within the context of a particular page of the | |
* application. | |
*/ | |
public interface PersistentFieldChange | |
{ | |
/** | |
* Returns the nested id of the component, or the empty string for the page's root component. | |
*/ | |
String getComponentId(); | |
/** | |
* Returns the name of the field for which a change was recorded. | |
*/ | |
String getFieldName(); | |
/** | |
* Returns the new value for the field (which may be null). | |
*/ | |
Object getValue(); | |
} |