001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041:
042: package org.netbeans.modules.xml.xdm.nodes;
043:
044: import java.util.ArrayList;
045: import java.util.HashMap;
046: import java.util.List;
047: import java.util.Map;
048: import org.netbeans.modules.xml.spi.dom.ROException;
049: import org.w3c.dom.NamedNodeMap;
050: import org.w3c.dom.Node;
051:
052: /**
053: * Read-only implementation of NamedNodeMap delegating to a Java <code>Map</code>.
054: * The underlaying map must use {@link #createKey} as its keys. Also keeps
055: * fidelity of the attribute order.
056: *
057: * @author Ayub Khan
058: */
059: public final class NamedNodeMapImpl implements NamedNodeMap {
060:
061: private List<Attribute> attributes;
062:
063: /** Read-only empty map. */
064: public static final NamedNodeMap EMPTY = new NamedNodeMapImpl(
065: new ArrayList(0));
066:
067: /**
068: * Creates new NamedNodeMapImpl
069: * @param peer a map to delegate to. It must not be modified after this contructor call!
070: */
071: public NamedNodeMapImpl(List<Attribute> attributes) {
072: if (attributes == null)
073: throw new NullPointerException();
074: this .attributes = new ArrayList(attributes);
075: }
076:
077: public int getLength() {
078: return attributes.size();
079: }
080:
081: public org.w3c.dom.Node removeNamedItem(String str)
082: throws org.w3c.dom.DOMException {
083: throw new ROException();
084: }
085:
086: public org.w3c.dom.Node setNamedItemNS(org.w3c.dom.Node node)
087: throws org.w3c.dom.DOMException {
088: throw new ROException();
089: }
090:
091: public org.w3c.dom.Node setNamedItem(org.w3c.dom.Node node)
092: throws org.w3c.dom.DOMException {
093: throw new ROException();
094: }
095:
096: public org.w3c.dom.Node getNamedItemNS(String uri, String local) {
097: String key = (String) createKey(uri, local);
098: if (key == null)
099: return null;
100: return getNode(key);
101: }
102:
103: public org.w3c.dom.Node item(int param) {
104: if (param < attributes.size())
105: return (org.w3c.dom.Node) attributes.get(param);
106: return null;
107: }
108:
109: public org.w3c.dom.Node getNamedItem(String str) {
110: String key = (String) createKey(str);
111: if (key == null)
112: return null;
113: return getNode(key);
114: }
115:
116: public org.w3c.dom.Node removeNamedItemNS(String str, String str1)
117: throws org.w3c.dom.DOMException {
118: throw new ROException();
119: }
120:
121: private Node getNode(String key) {
122: assert (key != null);
123: for (Attribute attr : attributes) {
124: if (key.equals(attr.getName())) {
125: return attr;
126: }
127: }
128: return null;
129: }
130:
131: /**
132: * Create proper key for map entry
133: */
134: public static Object createKey(String qname) {
135: return qname;
136: }
137:
138: /**
139: * Create proper key for map entry
140: */
141: public static Object createKey(String uri, String local) {
142: return uri + ":" + local; // NOI18N
143: }
144:
145: }
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