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.flow;
20
21 import javax.faces.flow.FlowNode;
22
23 /**
24 *
25 * @since 2.2
26 * @author Leonardo Uribe
27 */
28 public class FlowNodeImpl extends FlowNode implements Freezable
29 {
30 private String _id;
31
32 private boolean _initialized;
33
34 public FlowNodeImpl(String id)
35 {
36 this._id = id;
37 }
38
39 @Override
40 public String getId()
41 {
42 return _id;
43 }
44
45 public void setId(String id)
46 {
47 checkInitialized();
48 this._id = id;
49 }
50
51 public void freeze()
52 {
53 _initialized = true;
54 }
55
56 private void checkInitialized() throws IllegalStateException
57 {
58 if (_initialized)
59 {
60 throw new IllegalStateException("Flow is inmutable once initialized");
61 }
62 }
63 }