| 1 | /*
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| 2 | * Copyright 2001-2004 The Apache Software Foundation
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | *
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| 16 | */
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| 17 | package org.apache.tools.ant.taskdefs;
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| 18 |
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| 19 | import java.util.Enumeration;
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| 20 | import java.util.Vector;
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| 21 | import org.apache.tools.ant.BuildException;
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| 22 | import org.apache.tools.ant.Task;
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| 23 | import org.apache.tools.ant.TaskContainer;
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| 24 |
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| 25 |
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| 26 |
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| 27 | /**
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| 28 | * Sequential is a container task - it can contain other Ant tasks. The nested
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| 29 | * tasks are simply executed in sequence. Sequential's primary use is to support
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| 30 | * the sequential execution of a subset of tasks within the {@link Parallel Parallel Task}
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| 31 |
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| 32 | * <p>
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| 33 | * The sequential task has no attributes and does not support any nested
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| 34 | * elements apart from Ant tasks. Any valid Ant task may be embedded within the
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| 35 | * sequential task.</p>
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| 36 |
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| 37 | * @since Ant 1.4
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| 38 | * @ant.task category="control"
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| 39 | */
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| 40 | public class Sequential extends Task
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| 41 | implements TaskContainer {
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| 42 |
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| 43 | /** Optional Vector holding the nested tasks */
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| 44 | private Vector nestedTasks = new Vector();
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| 45 |
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| 46 | /**
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| 47 | * Add a nested task to Sequential.
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| 48 | * <p>
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| 49 | * @param nestedTask Nested task to execute Sequential
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| 50 | * <p>
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| 51 | */
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| 52 | public void addTask(Task nestedTask) {
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| 53 | nestedTasks.addElement(nestedTask);
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| 54 | }
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| 55 |
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| 56 | /**
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| 57 | * Execute all nestedTasks.
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| 58 | *
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| 59 | * @throws BuildException if one of the nested tasks fails.
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| 60 | */
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| 61 | public void execute() throws BuildException {
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| 62 | for (Enumeration e = nestedTasks.elements(); e.hasMoreElements();) {
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| 63 | Task nestedTask = (Task) e.nextElement();
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| 64 | nestedTask.perform();
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| 65 | }
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| 66 | }
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| 67 | }
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