01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * 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: */
18: package org.apache.tools.ant.taskdefs;
19:
20: import java.util.Iterator;
21: import java.util.Vector;
22: import org.apache.tools.ant.BuildException;
23: import org.apache.tools.ant.Task;
24: import org.apache.tools.ant.TaskContainer;
25:
26: /**
27: * Sequential is a container task - it can contain other Ant tasks. The nested
28: * tasks are simply executed in sequence. Sequential's primary use is to support
29: * the sequential execution of a subset of tasks within the {@link Parallel Parallel Task}
30:
31: * <p>
32: * The sequential task has no attributes and does not support any nested
33: * elements apart from Ant tasks. Any valid Ant task may be embedded within the
34: * sequential task.</p>
35: *
36: * @since Ant 1.4
37: * @ant.task category="control"
38: */
39: public class Sequential extends Task implements TaskContainer {
40:
41: /** Optional Vector holding the nested tasks */
42: private Vector nestedTasks = new Vector();
43:
44: /**
45: * Add a nested task to Sequential.
46: * <p>
47: * @param nestedTask Nested task to execute Sequential
48: * <p>
49: */
50: public void addTask(Task nestedTask) {
51: nestedTasks.addElement(nestedTask);
52: }
53:
54: /**
55: * Execute all nestedTasks.
56: *
57: * @throws BuildException if one of the nested tasks fails.
58: */
59: public void execute() throws BuildException {
60: for (Iterator i = nestedTasks.iterator(); i.hasNext();) {
61: Task nestedTask = (Task) i.next();
62: nestedTask.perform();
63: }
64: }
65: }
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