| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2000 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowlegement: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowlegement may appear in the software itself, |
| * if and wherever such third-party acknowlegements normally appear. |
| * |
| * 4. The names "The Jakarta Project", "Ant", and "Apache Software |
| * Foundation" must not be used to endorse or promote products derived |
| * from this software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache" |
| * nor may "Apache" appear in their names without prior written |
| * permission of the Apache Group. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| package org.apache.tools.ant; |
| |
| import java.util.Vector; |
| |
| /** |
| * Wrapper class that holds all information necessary to create a task |
| * that did not exist when Ant started. |
| * |
| * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a> |
| */ |
| public class UnknownElement extends Task { |
| |
| private String elementName; |
| private Task realTask; |
| private Vector children = new Vector(); |
| |
| public UnknownElement (String elementName) { |
| this.elementName = elementName; |
| } |
| |
| /** |
| * return the corresponding XML tag. |
| */ |
| public String getTag() { |
| return elementName; |
| } |
| |
| public void maybeConfigure() throws BuildException { |
| realTask = makeTask(this, wrapper); |
| |
| wrapper.setProxy(realTask); |
| realTask.setRuntimeConfigurableWrapper(wrapper); |
| |
| handleChildren(realTask, wrapper); |
| |
| realTask.maybeConfigure(); |
| target.replaceTask(this, realTask); |
| } |
| |
| /** |
| * Called when the real task has been configured for the first time. |
| */ |
| public void execute() { |
| if (realTask == null) { |
| // plain impossible to get here, maybeConfigure should |
| // have thrown an exception. |
| throw new BuildException("Could not create task of type: " |
| + elementName, location); |
| } |
| realTask.execute(); |
| } |
| |
| public void addChild(UnknownElement child) { |
| children.addElement(child); |
| } |
| |
| protected void handleChildren(Object parent, |
| RuntimeConfigurable parentWrapper) |
| throws BuildException { |
| |
| if (parent instanceof TaskAdapter) { |
| parent = ((TaskAdapter) parent).getProxy(); |
| } |
| |
| Class parentClass = parent.getClass(); |
| IntrospectionHelper ih = IntrospectionHelper.getHelper(parentClass); |
| |
| for (int i=0; i<children.size(); i++) { |
| RuntimeConfigurable childWrapper = parentWrapper.getChild(i); |
| UnknownElement child = (UnknownElement) children.elementAt(i); |
| Object realChild = null; |
| if (parent instanceof TaskContainer) { |
| realChild = makeTask(child, childWrapper); |
| ((TaskContainer) parent).addTask((Task) realChild); |
| } else { |
| realChild = ih.createElement(project, parent, child.getTag()); |
| } |
| |
| childWrapper.setProxy(realChild); |
| if (realChild instanceof Task) { |
| ((Task) realChild).setRuntimeConfigurableWrapper(childWrapper); |
| } |
| child.handleChildren(realChild, childWrapper); |
| if (realChild instanceof Task) { |
| ((Task) realChild).maybeConfigure(); |
| } |
| } |
| } |
| |
| /** |
| * Create a named task and configure it up to the init() stage. |
| */ |
| protected Task makeTask(UnknownElement ue, RuntimeConfigurable w) { |
| Task task = project.createTask(ue.getTag()); |
| if (task == null) { |
| log("Could not create task of type: " + elementName + " Common solutions" + |
| " are adding the task to defaults.properties and executing bin/bootstrap", |
| Project.MSG_DEBUG); |
| throw new BuildException("Could not create task of type: " + elementName + |
| ". Common solutions are to use taskdef to declare" + |
| " your task, or, if this is an optional task," + |
| " to put the optional.jar in the lib directory of" + |
| " your ant installation (ANT_HOME).", location); |
| } |
| |
| task.setLocation(getLocation()); |
| String id = w.getAttributes().getValue("id"); |
| if (id != null) { |
| project.addReference(id, task); |
| } |
| // UnknownElement always has an associated target |
| task.setOwningTarget(target); |
| |
| task.init(); |
| return task; |
| } |
| |
| /** |
| * Get the name to use in logging messages. |
| * |
| * @return the name to use in logging messages. |
| */ |
| public String getTaskName() { |
| return realTask == null ? super.getTaskName() : realTask.getTaskName(); |
| } |
| |
| }// UnknownElement |