1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.myfaces.trinidad.model;
20
21 /**
22 * Listener for RowKeyChangeEvent.
23 */
24 public interface RowKeyChangeListener
25 {
26 /**
27 * Called by CollectionModel to inform a RowKeyChangeListener that a RowKey has changed
28 * The old row key or the new row key can be null, it is expected that listener implementation
29 * to handle these situations with best efforts, for example, clear and rebuild component
30 * state cache to recover.
31 */
32 public void onRowKeyChange(RowKeyChangeEvent event);
33 }