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Groovy example source code file (IteratorClosureAdapter.java)

This example Groovy source code file (IteratorClosureAdapter.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

arraylist, closure, iteratorclosureadapter, iteratorclosureadapter, list, list, metaclass, metaclass, object, object, util

The Groovy IteratorClosureAdapter.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 org.codehaus.groovy.runtime;

import groovy.lang.Closure;
import groovy.lang.MetaClass;

import java.util.ArrayList;
import java.util.List;

 * A closure which stores calls in a List so that method calls 
 * can be iterated over in a 'yield' style way
 * @author <a href="mailto:james@coredevelopers.net">James Strachan
 * @version $Revision: 18728 $
public class IteratorClosureAdapter<T> extends Closure {

    private final List<T> list = new ArrayList();
    private MetaClass metaClass = InvokerHelper.getMetaClass(getClass());
    public IteratorClosureAdapter(Object delegate) {

    public MetaClass getMetaClass() {
        return metaClass;

    public void setMetaClass(MetaClass metaClass) {
        this.metaClass = metaClass;
    public List<T> asList() {
        return list;

    protected Object doCall(T argument) {
        return null;

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