CollectionChildNodeIterator.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE
 * file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file
 * to You 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, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */
/*******************************************************************************
 * Copyright (c) 2010 BestSolution.at and others. All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is
 * available at http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors: Tom Schindl <tom.schindl@bestsolution.at> - adjustment to EObject
 ******************************************************************************/
package org.eclipse.e4.emf.internal.xpath;

import org.apache.commons.jxpath.ri.compiler.NodeTest;
import org.apache.commons.jxpath.ri.model.NodeIterator;
import org.apache.commons.jxpath.ri.model.NodePointer;

/**
 * Combines child node iterators of all elements of a collection into one aggregate child node iterator.
 * 
 */
public class CollectionChildNodeIterator extends CollectionNodeIterator {

	private NodeTest test;

	/**
	 * Create a new CollectionChildNodeIterator.
	 * 
	 * @param pointer
	 *            CollectionPointer
	 * @param test
	 *            child test
	 * @param reverse
	 *            iteration order
	 * @param startWith
	 *            starting pointer
	 */
	public CollectionChildNodeIterator(CollectionPointer pointer, NodeTest test, boolean reverse, NodePointer startWith) {
		super(pointer, reverse, startWith);
		this.test = test;
	}

	@Override
	protected NodeIterator getElementNodeIterator(NodePointer elementPointer) {
		return elementPointer.childIterator(test, false, null);
	}
}