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Groovy example source code file (GroovyObjectSupport.java)

This example Groovy source code file (GroovyObjectSupport.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

groovyobject, groovyobject, groovyobjectsupport, groovyobjectsupport, metaclass, metaclass, object, object

The Groovy GroovyObjectSupport.java source code

 * Copyright 2003-2007 the original author or authors.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *     http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package groovy.lang;

import org.codehaus.groovy.runtime.InvokerHelper;

 * A useful base class for Java objects wishing to be Groovy objects
 * @author <a href="mailto:james@coredevelopers.net">James Strachan
 * @version $Revision: 20587 $
public abstract class GroovyObjectSupport implements GroovyObject {

    // never persist the MetaClass
    private transient MetaClass metaClass;

    public GroovyObjectSupport() {
        this.metaClass = InvokerHelper.getMetaClass(this.getClass());

    public Object getProperty(String property) {
        return getMetaClass().getProperty(this, property);

    public void setProperty(String property, Object newValue) {
        getMetaClass().setProperty(this, property, newValue);

    public Object invokeMethod(String name, Object args) {
        return getMetaClass().invokeMethod(this, name, args);

    public MetaClass getMetaClass() {
        if (metaClass == null) {
            metaClass = InvokerHelper.getMetaClass(getClass());
        return metaClass;

    public void setMetaClass(MetaClass metaClass) {
        this.metaClass = metaClass;

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