antliscence/src/main/org/apache/tools/ant/TaskAdapter.java

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 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", "Tomcat", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
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 * 5. Products derived from this software may not be called "Apache"
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 *
 * 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
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * 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.lang.reflect.*;
import java.util.*;

/**
 *  Use introspection to "adapt" an arbitrary Bean ( not extending Task, but with similar
 *  patterns).
 *
 * @author costin@dnt.ro
 */
public class TaskAdapter extends Task {

    Object proxy;
    
    /**
     * Do the execution.
     */
    public void execute() throws BuildException {
	Method executeM=null;
	try {
	    Class c=proxy.getClass();
	    executeM=c.getMethod( "execute", new Class[0] );
	    if( executeM == null ) {
		log("No execute in " + proxy.getClass(), Project.MSG_ERR);
		throw new BuildException("No execute in " + proxy.getClass());
	    }
	    executeM.invoke(proxy, null);
	    return; 
	} catch( Exception ex ) {
	    log("Error in " + proxy.getClass(), Project.MSG_ERR);
	    throw new BuildException( ex );
	}

    }
    
    /**
     * Set the target object class
     */
    public void setProxy(Object o) {
        this.proxy = o;
    }

    public Object getProxy() {
        return this.proxy ;
    }

}