diff --git a/proposal/embed/src/java/org/apache/tools/ant/helper/TaskAdapter2.java b/proposal/embed/src/java/org/apache/tools/ant/helper/TaskAdapter2.java
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+/*
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2000-2002 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
+ * .
+ */
+
+package org.apache.tools.ant.helper;
+
+import java.lang.reflect.Method;
+import org.apache.tools.ant.*;
+
+/**
+ * Uses introspection to "adapt" an arbitrary Bean which doesn't
+ * itself extend Task, but still contains an execute method and optionally
+ * a setProject method.
+ *
+ * The adapter can also be used to wrap tasks that are loaded in a different class loader
+ * by ant, when used in programatic mode.
+ *
+ * @author Costin Manolache
+ */
+public class TaskAdapter2 extends Task {
+
+ /** Object to act as a proxy for. */
+ private Object proxy;
+ private String methodName="execute";
+
+ /**
+ * Checks whether or not a class is suitable to be adapted by TaskAdapter.
+ *
+ * This only checks conditions which are additionally required for
+ * tasks adapted by TaskAdapter. Thus, this method should be called by
+ * Project.checkTaskClass.
+ *
+ * Throws a BuildException and logs as Project.MSG_ERR for
+ * conditions that will cause the task execution to fail.
+ * Logs other suspicious conditions with Project.MSG_WARN.
+ *
+ * @param taskClass Class to test for suitability.
+ * Must not be null
.
+ * @param project Project to log warnings/errors to.
+ * Must not be null
.
+ *
+ * @see Project#checkTaskClass(Class)
+ */
+ public static void checkTaskClass(final Class taskClass, final Project project) {
+ // Any task can be used via adapter. If it doesn't have any execute()
+ // method, no problem - it will do nothing, but still get an 'id'
+ // and be registered in the project reference table and useable by other
+ // tasks.
+
+ if( true )
+ return;
+
+ // don't have to check for interface, since then
+ // taskClass would be abstract too.
+ try {
+ final Method executeM = taskClass.getMethod( "execute", null );
+ // don't have to check for public, since
+ // getMethod finds public method only.
+ // don't have to check for abstract, since then
+ // taskClass would be abstract too.
+ if(!Void.TYPE.equals(executeM.getReturnType())) {
+ final String message =
+ "return type of execute() should be void but was \""+
+ executeM.getReturnType()+"\" in " + taskClass;
+ project.log(message, Project.MSG_WARN);
+ }
+ } catch(NoSuchMethodException e) {
+ final String message = "No public execute() in " + taskClass;
+ project.log(message, Project.MSG_ERR);
+ throw new BuildException(message);
+ }
+ }
+
+ private IntrospectionHelper ih;
+
+ void setIntrospectionHelper( IntrospectionHelper ih ) {
+ this.ih=ih;
+ }
+
+ IntrospectionHelper getIntrospectionHelper() {
+ if( ih==null ) {
+ ih = IntrospectionHelper.getHelper(target.getClass());
+ }
+ return ih;
+ }
+
+ /** Experimental, non-public method for better 'adaptation'
+ *
+ */
+ void setAttribute( String name, String value )
+ throws BuildException
+ {
+ try {
+ ih.setAttribute( project, proxy, name, value );
+ } catch( BuildException ex ) {
+ if( "do".equals( name ) ) {
+ setDo( value );
+ } else {
+ throw ex;
+ }
+ }
+ }
+
+ /** Set the 'action' method. This allow beans implementing multiple
+ * actions or using methods other than 'execute()' to be used in ant
+ * without any modification.
+ *
+ * @ant:experimental
+ */
+ public void setDo(String methodName ) {
+ this.methodName=methodName;
+ }
+
+ /**
+ * Executes the proxied task.
+ */
+ public void execute() throws BuildException {
+ Method setProjectM = null;
+ try {
+ Class c = proxy.getClass();
+ setProjectM =
+ c.getMethod( "setProject", new Class[] {Project.class});
+ if(setProjectM != null) {
+ setProjectM.invoke(proxy, new Object[] {project});
+ }
+ } catch (NoSuchMethodException e) {
+ // ignore this if the class being used as a task does not have
+ // a set project method.
+ } catch( Exception ex ) {
+ log("Error setting project in " + proxy.getClass(),
+ Project.MSG_ERR);
+ throw new BuildException( ex );
+ }
+
+
+ Method executeM=null;
+ try {
+ Class c=proxy.getClass();
+ executeM=c.getMethod( methodName, new Class[0] );
+ if( executeM == null ) {
+ log("No public " + methodName + "() in " + proxy.getClass(), Project.MSG_ERR);
+ throw new BuildException("No public " + methodName +"() in " + proxy.getClass());
+ }
+ executeM.invoke(proxy, null);
+ return;
+ } catch (java.lang.reflect.InvocationTargetException ie) {
+ log("Error in " + proxy.getClass(), Project.MSG_ERR);
+ Throwable t = ie.getTargetException();
+ if (t instanceof BuildException) {
+ throw ((BuildException) t);
+ } else {
+ throw new BuildException(t);
+ }
+ } catch( Exception ex ) {
+ log("Error in " + proxy.getClass(), Project.MSG_ERR);
+ throw new BuildException( ex );
+ }
+
+ }
+
+ /**
+ * Sets the target object to proxy for.
+ *
+ * @param o The target object. Must not be null
.
+ */
+ public void setProxy(Object o) {
+ this.proxy = o;
+ }
+
+ /**
+ * Returns the target object being proxied.
+ *
+ * @return the target proxy object
+ */
+ public Object getProxy() {
+ return this.proxy ;
+ }
+
+}