1 /* 2 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 /** 27 * 28 * @author SAAJ RI Development Team 29 */ 30 package com.sun.xml.internal.messaging.saaj.util; 31 32 import java.util.Iterator; 33 import java.util.NoSuchElementException; 34 35 import org.w3c.dom.*; 36 37 public class NamespaceContextIterator implements Iterator { 38 Node context; 39 NamedNodeMap attributes = null; 40 int attributesLength; 41 int attributeIndex; 42 Attr next = null; 43 Attr last = null; 44 boolean traverseStack = true; 45 46 public NamespaceContextIterator(Node context) { 47 this.context = context; 48 findContextAttributes(); 49 } 50 51 public NamespaceContextIterator(Node context, boolean traverseStack) { 52 this(context); 53 this.traverseStack = traverseStack; 54 } 55 56 protected void findContextAttributes() { 57 while (context != null) { 58 int type = context.getNodeType(); 59 if (type == Node.ELEMENT_NODE) { 60 attributes = context.getAttributes(); 61 attributesLength = attributes.getLength(); 62 attributeIndex = 0; 63 return; 64 } else { 65 context = null; 66 } 67 } 68 } 69 70 protected void findNext() { 71 while (next == null && context != null) { 72 for (; attributeIndex < attributesLength; ++attributeIndex) { 73 Node currentAttribute = attributes.item(attributeIndex); 74 String attributeName = currentAttribute.getNodeName(); 75 if (attributeName.startsWith("xmlns") 76 && (attributeName.length() == 5 77 || attributeName.charAt(5) == ':')) { 78 next = (Attr) currentAttribute; 79 ++attributeIndex; 80 return; 81 } 82 } 83 if (traverseStack) { 84 context = context.getParentNode(); 85 findContextAttributes(); 86 } else { 87 context = null; 88 } 89 } 90 } 91 92 @Override 93 public boolean hasNext() { 94 findNext(); 95 return next != null; 96 } 97 98 @Override 99 public Object next() { 100 return getNext(); 101 } 102 103 public Attr nextNamespaceAttr() { 104 return getNext(); 105 } 106 107 protected Attr getNext() { 108 findNext(); 109 if (next == null) { 110 throw new NoSuchElementException(); 111 } 112 last = next; 113 next = null; 114 return last; 115 } 116 117 @Override 118 public void remove() { 119 if (last == null) { 120 throw new IllegalStateException(); 121 } 122 ((Element) context).removeAttributeNode(last); 123 } 124 125 }