| /* |
| * 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. |
| */ |
| |
| package org.apache.axiom.om.impl.common; |
| |
| import org.apache.axiom.om.OMContainer; |
| import org.apache.axiom.om.OMNode; |
| import org.apache.axiom.om.OMSerializable; |
| |
| /** |
| * Iterator that iterates over all descendants in document order. |
| */ |
| public class OMDescendantsIterator extends OMAbstractIterator { |
| private int level; |
| |
| public OMDescendantsIterator(OMContainer container, boolean includeSelf) { |
| super(includeSelf ? (OMSerializable)container : (OMSerializable)container.getFirstOMChild()); |
| level = includeSelf ? 0 : 1; |
| } |
| |
| protected OMSerializable getNextNode(OMSerializable currentNode) { |
| if (currentNode instanceof OMContainer) { |
| OMNode firstChild = ((OMContainer)currentNode).getFirstOMChild(); |
| if (firstChild != null) { |
| level++; |
| return firstChild; |
| } |
| } |
| OMSerializable node = currentNode; |
| while (true) { |
| if (level == 0) { |
| return null; |
| } |
| OMNode nextSibling = ((OMNode)node).getNextOMSibling(); |
| if (nextSibling != null) { |
| return nextSibling; |
| } else { |
| node = ((OMNode)node).getParent(); |
| level--; |
| } |
| } |
| } |
| } |