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1: /* DomNsNode.java -- 2: Copyright (C) 1999,2000,2001,2004 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: package gnu.xml.dom; 39: 40: import javax.xml.XMLConstants; 41: import org.w3c.dom.DOMException; 42: 43: /** 44: * <p> Abstract implemention of namespace support. This facilitates 45: * sharing code for attribute and element nodes. 46: * 47: * @author David Brownell 48: * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> 49: */ 50: public abstract class DomNsNode 51: extends DomNode 52: { 53: 54: private String name; 55: private String namespace; 56: private String prefix; 57: String localName; 58: 59: /** 60: * Constructs a node associated with the specified document, and 61: * with the specified namespace information. 62: * 63: * @param owner The document with which this entity is associated 64: * @param namespaceURI Combined with the local part of the name, 65: * this identifies a type of element or attribute; may be null. 66: * If this is the empty string, it is reassigned as null so that 67: * applications only need to test that case. 68: * @param name Name of this node, which may include a prefix 69: */ 70: // package private 71: DomNsNode(short nodeType, DomDocument owner, String namespaceURI, String name) 72: { 73: super(nodeType, owner); 74: setNodeName(name); 75: setNamespaceURI(namespaceURI); 76: } 77: 78: /** 79: * <b>DOM L1</b> 80: * Returns the node's name, including any namespace prefix. 81: */ 82: public final String getNodeName() 83: { 84: return name; 85: } 86: 87: final void setNodeName(String name) 88: { 89: this.name = name.intern(); 90: int index = name.indexOf(':'); 91: if (index == -1) 92: { 93: prefix = null; 94: localName = this.name; 95: } 96: else 97: { 98: prefix = name.substring(0, index).intern(); 99: localName = name.substring(index + 1).intern(); 100: } 101: } 102: 103: /** 104: * <b>DOM L2</b> 105: * Returns the node's namespace URI 106: * <em>or null</em> if the node name is not namespace scoped. 107: */ 108: public final String getNamespaceURI() 109: { 110: return namespace; 111: } 112: 113: final void setNamespaceURI(String namespaceURI) 114: { 115: if ("".equals(namespaceURI)) 116: { 117: namespaceURI = null; 118: } 119: namespace = (namespaceURI == null) ? null : namespaceURI.intern(); 120: } 121: 122: /** 123: * <b>DOM L2</b> 124: * Returns any prefix part of the node's name (before any colon). 125: */ 126: public final String getPrefix() 127: { 128: return prefix; 129: } 130: 131: /** 132: * <b>DOM L2</b> 133: * Assigns the prefix part of the node's name (before any colon). 134: */ 135: public final void setPrefix(String prefix) 136: { 137: if (readonly) 138: { 139: throw new DomDOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR); 140: } 141: 142: if (prefix == null) 143: { 144: name = localName; 145: return; 146: } 147: else if (namespace == null) 148: { 149: throw new DomDOMException(DOMException.NAMESPACE_ERR, 150: "can't set prefix, node has no namespace URI", 151: this, 0); 152: } 153: 154: DomDocument.checkName(prefix, "1.1".equals(owner.getXmlVersion())); 155: if (prefix.indexOf (':') != -1) 156: { 157: throw new DomDOMException(DOMException.NAMESPACE_ERR, 158: "illegal prefix " + prefix, this, 0); 159: } 160: 161: if (XMLConstants.XML_NS_PREFIX.equals(prefix) 162: && !XMLConstants.XML_NS_URI.equals(namespace)) 163: { 164: throw new DomDOMException(DOMException.NAMESPACE_ERR, 165: "xml namespace is always " + 166: XMLConstants.XML_NS_URI, this, 0); 167: } 168: 169: if (XMLConstants.XMLNS_ATTRIBUTE.equals(prefix)) 170: { 171: if (namespace != null || getNodeType() != ATTRIBUTE_NODE) 172: { 173: throw new DomDOMException(DOMException.NAMESPACE_ERR, 174: "xmlns attribute prefix is reserved", 175: this, 0); 176: } 177: } 178: else if (getNodeType () == ATTRIBUTE_NODE 179: && (XMLConstants.XMLNS_ATTRIBUTE.equals(name) || 180: name.startsWith("xmlns:"))) 181: { 182: throw new DomDOMException(DOMException.NAMESPACE_ERR, 183: "namespace declarations can't change names", 184: this, 0); 185: } 186: 187: this.prefix = prefix.intern(); 188: } 189: 190: /** 191: * <b>DOM L2</b> 192: * Returns the local part of the node's name (after any colon). 193: */ 194: public final String getLocalName() 195: { 196: return localName; 197: } 198: 199: }