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/* |
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* The Apache Software License, Version 1.1 |
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* |
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* Copyright (c) 1999-2001 The Apache Software Foundation. All rights |
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* reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, if |
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* any, must include the following acknowlegement: |
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* "This product includes software developed by the |
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* Apache Software Foundation (http://www.apache.org/)." |
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* Alternately, this acknowlegement may appear in the software itself, |
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* if and wherever such third-party acknowlegements normally appear. |
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* |
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* 4. The names "The Jakarta Project", "Ant", and "Apache Software |
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* Foundation" must not be used to endorse or promote products derived |
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* from this software without prior written permission. For written |
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* permission, please contact apache@apache.org. |
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* |
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* 5. Products derived from this software may not be called "Apache" |
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* nor may "Apache" appear in their names without prior written |
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* permission of the Apache Group. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of the Apache Software Foundation. For more |
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* information on the Apache Software Foundation, please see |
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* <http://www.apache.org/>. |
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*/ |
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package org.apache.tools.ant.taskdefs; |
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import org.apache.tools.ant.*; |
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import org.apache.tools.ant.types.*; |
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/** |
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* Base class for Taskdef and Typedef - does all the classpath |
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* handling and and class loading. |
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* |
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* @author costin@dnt.ro |
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* @author <a href="stefan.bodewig@epost.de">Stefan Bodewig</a> |
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*/ |
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public abstract class Definer extends Task { |
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private String name; |
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private String value; |
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private Path classpath; |
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public void setClasspath(Path classpath) { |
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if (this.classpath == null) { |
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this.classpath = classpath; |
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} else { |
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this.classpath.append(classpath); |
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} |
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} |
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public Path createClasspath() { |
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if (this.classpath == null) { |
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this.classpath = new Path(project); |
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} |
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return this.classpath.createPath(); |
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} |
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public void setClasspathRef(Reference r) { |
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createClasspath().setRefid(r); |
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} |
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public void execute() throws BuildException { |
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if (name==null || value==null ) { |
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String msg = "name or classname attributes of " |
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+ getTaskName() + " element " |
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+ "are undefined"; |
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throw new BuildException(msg); |
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} |
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try { |
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ClassLoader loader = null; |
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if (classpath != null) { |
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AntClassLoader al = new AntClassLoader(project, classpath, |
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false); |
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// need to load Task via system classloader or the new |
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// task we want to define will never be a Task but always |
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// be wrapped into a TaskAdapter. |
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al.addSystemPackageRoot("org.apache.tools.ant"); |
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loader = al; |
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} else { |
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loader = this.getClass().getClassLoader(); |
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} |
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Class c = null; |
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if (loader != null) { |
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c = loader.loadClass(value); |
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AntClassLoader.initializeClass(c); |
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} else { |
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c = Class.forName(value); |
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} |
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addDefinition(name, c); |
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} catch (ClassNotFoundException cnfe) { |
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String msg = getTaskName()+" class " + value + |
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" cannot be found"; |
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throw new BuildException(msg, cnfe, location); |
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} catch (NoClassDefFoundError ncdfe) { |
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String msg = getTaskName()+" class " + value + |
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" cannot be found"; |
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throw new BuildException(msg, ncdfe, location); |
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} |
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} |
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public void setName( String name) { |
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this.name = name; |
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} |
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public String getClassname() { |
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return value; |
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} |
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public void setClassname(String v) { |
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value = v; |
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} |
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protected abstract void addDefinition(String name, Class c); |
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} |
Stefan Bodewig