1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.chain.impl;
18
19
20 import org.apache.commons.chain.Chain;
21 import org.apache.commons.chain.Command;
22 import org.apache.commons.chain.Context;
23
24
25 /**
26 * <p>Implementation of {@link Command} that logs its identifier and
27 * and attempts to add a new {@link Command} to the {@link Chain}. This
28 * should cause an IllegalStateException if the {@link Chain} implementation
29 * subclasses <code>ChainBase</code>.</p>
30 *
31 * @author Craig R. McClanahan
32 * @version $Revision: 480477 $ $Date: 2006-11-29 08:34:52 +0000 (Wed, 29 Nov 2006) $
33 */
34
35 public class AddingCommand extends NonDelegatingCommand {
36
37
38 // ------------------------------------------------------------ Constructor
39
40
41 public AddingCommand() {
42 this("", null);
43 }
44
45 // Construct an instance that will log the specified identifier
46 public AddingCommand(String id, Chain parent) {
47 super(id);
48 this.parent = parent;
49 }
50
51
52 // The parent Chain
53 private Chain parent = null;
54
55
56 // -------------------------------------------------------- Command Methods
57
58
59 // Execution method for this Command
60 public boolean execute(Context context, Chain chain) throws Exception {
61
62 super.execute(context);
63 parent.addCommand(new NonDelegatingCommand("NEW")); // Should cause ISE
64 return (true);
65
66 }
67
68
69 }