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/*
 * 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.xerces.dom;

import org.apache.xerces.impl.dv.xs.XSSimpleTypeDecl;
import org.apache.xerces.impl.xs.XSComplexTypeDecl;
import org.apache.xerces.xni.NamespaceContext;
import org.apache.xerces.xs.XSTypeDefinition;
import org.w3c.dom.Attr;
import org.w3c.dom.DOMException;



/**
 * ElementNSImpl inherits from ElementImpl and adds namespace support.
 * 

* The qualified name is the node name, and we store localName which is also * used in all queries. On the other hand we recompute the prefix when * necessary. * * @xerces.internal * * @author Elena litani, IBM * @author Neeraj Bajaj, Sun Microsystems * @version $Id: ElementNSImpl.java 924245 2010-03-17 11:58:14Z mrglavas $ */ public class ElementNSImpl extends ElementImpl { // // Constants // /** Serialization version. */ static final long serialVersionUID = -9142310625494392642L; static final String xmlURI = "http://www.w3.org/XML/1998/namespace"; // // Data // /** DOM2: Namespace URI. */ protected String namespaceURI; /** DOM2: localName. */ protected String localName; /** DOM3: type information */ // REVISIT: we are losing the type information in DOM during serialization transient XSTypeDefinition type; protected ElementNSImpl() { super(); } /** * DOM2: Constructor for Namespace implementation. */ protected ElementNSImpl(CoreDocumentImpl ownerDocument, String namespaceURI, String qualifiedName) throws DOMException { super(ownerDocument, qualifiedName); setName(namespaceURI, qualifiedName); } private void setName(String namespaceURI, String qname) { String prefix; // DOM Level 3: namespace URI is never empty string. this.namespaceURI = namespaceURI; if (namespaceURI != null) { //convert the empty string to 'null' this.namespaceURI = (namespaceURI.length() == 0) ? null : namespaceURI; } int colon1, colon2 ; //NAMESPACE_ERR: //1. if the qualified name is 'null' it is malformed. //2. or if the qualifiedName is null and the namespaceURI is different from null, // We dont need to check for namespaceURI != null, if qualified name is null throw DOMException. if(qname == null){ String msg = DOMMessageFormatter.formatMessage( DOMMessageFormatter.DOM_DOMAIN, "NAMESPACE_ERR", null); throw new DOMException(DOMException.NAMESPACE_ERR, msg); } else{ colon1 = qname.indexOf(':'); colon2 = qname.lastIndexOf(':'); } ownerDocument.checkNamespaceWF(qname, colon1, colon2); if (colon1 < 0) { // there is no prefix localName = qname; if (ownerDocument.errorChecking) { ownerDocument.checkQName(null, localName); if (qname.equals("xmlns") && (namespaceURI == null || !namespaceURI.equals(NamespaceContext.XMLNS_URI)) || (namespaceURI!=null && namespaceURI.equals(NamespaceContext.XMLNS_URI) && !qname.equals("xmlns"))) { String msg = DOMMessageFormatter.formatMessage( DOMMessageFormatter.DOM_DOMAIN, "NAMESPACE_ERR", null); throw new DOMException(DOMException.NAMESPACE_ERR, msg); } } }//there is a prefix else { prefix = qname.substring(0, colon1); localName = qname.substring(colon2 + 1); //NAMESPACE_ERR: //1. if the qualifiedName has a prefix and the namespaceURI is null, //2. or if the qualifiedName has a prefix that is "xml" and the namespaceURI //is different from " http://www.w3.org/XML/1998/namespace" if (ownerDocument.errorChecking) { if( namespaceURI == null || ( prefix.equals("xml") && !namespaceURI.equals(NamespaceContext.XML_URI) )){ String msg = DOMMessageFormatter.formatMessage( DOMMessageFormatter.DOM_DOMAIN, "NAMESPACE_ERR", null); throw new DOMException(DOMException.NAMESPACE_ERR, msg); } ownerDocument.checkQName(prefix, localName); ownerDocument.checkDOMNSErr(prefix, namespaceURI); } } } // when local name is known protected ElementNSImpl(CoreDocumentImpl ownerDocument, String namespaceURI, String qualifiedName, String localName) throws DOMException { super(ownerDocument, qualifiedName); this.localName = localName; this.namespaceURI = namespaceURI; } // for DeferredElementImpl protected ElementNSImpl(CoreDocumentImpl ownerDocument, String value) { super(ownerDocument, value); } // Support for DOM Level 3 renameNode method. // Note: This only deals with part of the pb. CoreDocumentImpl // does all the work. void rename(String namespaceURI, String qualifiedName) { if (needsSyncData()) { synchronizeData(); } this.name = qualifiedName; setName(namespaceURI, qualifiedName); reconcileDefaultAttributes(); } // // Node methods // // //DOM2: Namespace methods. // /** * Introduced in DOM Level 2.

* * The namespace URI of this node, or null if it is unspecified.

* * This is not a computed value that is the result of a namespace lookup based on * an examination of the namespace declarations in scope. It is merely the * namespace URI given at creation time.

* * For nodes created with a DOM Level 1 method, such as createElement * from the Document interface, this is null. * @since WD-DOM-Level-2-19990923 */ public String getNamespaceURI() { if (needsSyncData()) { synchronizeData(); } return namespaceURI; } /** * Introduced in DOM Level 2.

* * The namespace prefix of this node, or null if it is unspecified.

* * For nodes created with a DOM Level 1 method, such as createElement * from the Document interface, this is null.

* * @since WD-DOM-Level-2-19990923 */ public String getPrefix() { if (needsSyncData()) { synchronizeData(); } int index = name.indexOf(':'); return index < 0 ? null : name.substring(0, index); } /** * Introduced in DOM Level 2.

* * Note that setting this attribute changes the nodeName attribute, which holds the * qualified name, as well as the tagName and name attributes of the Element * and Attr interfaces, when applicable.

* * @param prefix The namespace prefix of this node, or null(empty string) if it is unspecified. * * @exception INVALID_CHARACTER_ERR * Raised if the specified * prefix contains an invalid character. * @exception DOMException * @since WD-DOM-Level-2-19990923 */ public void setPrefix(String prefix) throws DOMException { if (needsSyncData()) { synchronizeData(); } if (ownerDocument.errorChecking) { if (isReadOnly()) { String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null); throw new DOMException( DOMException.NO_MODIFICATION_ALLOWED_ERR, msg); } if (prefix != null && prefix.length() != 0) { if (!CoreDocumentImpl.isXMLName(prefix,ownerDocument.isXML11Version())) { String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_CHARACTER_ERR", null); throw new DOMException(DOMException.INVALID_CHARACTER_ERR, msg); } if (namespaceURI == null || prefix.indexOf(':') >=0) { String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NAMESPACE_ERR", null); throw new DOMException(DOMException.NAMESPACE_ERR, msg); } else if (prefix.equals("xml")) { if (!namespaceURI.equals(xmlURI)) { String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NAMESPACE_ERR", null); throw new DOMException(DOMException.NAMESPACE_ERR, msg); } } } } // update node name with new qualifiedName if (prefix !=null && prefix.length() != 0) { name = prefix + ":" + localName; } else { name = localName; } } /** * Introduced in DOM Level 2.

* * Returns the local part of the qualified name of this node. * @since WD-DOM-Level-2-19990923 */ public String getLocalName() { if (needsSyncData()) { synchronizeData(); } return localName; } /** * NON-DOM * Returns the xml:base attribute. */ protected Attr getXMLBaseAttribute() { return (Attr) attributes.getNamedItemNS("http://www.w3.org/XML/1998/namespace", "base"); } // getXMLBaseAttribute():Attr /** * @see org.w3c.dom.TypeInfo#getTypeName() */ public String getTypeName() { if (type !=null){ if (type instanceof XSSimpleTypeDecl) { return ((XSSimpleTypeDecl) type).getTypeName(); } else if (type instanceof XSComplexTypeDecl) { return ((XSComplexTypeDecl) type).getTypeName(); } } return null; } /** * @see org.w3c.dom.TypeInfo#getTypeNamespace() */ public String getTypeNamespace() { if (type !=null){ return type.getNamespace(); } return null; } /** * Introduced in DOM Level 2.

* Checks if a type is derived from another by restriction. See: * http://www.w3.org/TR/DOM-Level-3-Core/core.html#TypeInfo-isDerivedFrom * * @param typeNamespaceArg * The namspace of the ancestor type declaration * @param typeNameArg * The name of the ancestor type declaration * @param derivationMethod * The derivation method * * @return boolean True if the type is derived by restriciton for the * reference type */ public boolean isDerivedFrom(String typeNamespaceArg, String typeNameArg, int derivationMethod) { if(needsSyncData()) { synchronizeData(); } if (type != null) { if (type instanceof XSSimpleTypeDecl) { return ((XSSimpleTypeDecl) type).isDOMDerivedFrom( typeNamespaceArg, typeNameArg, derivationMethod); } else if (type instanceof XSComplexTypeDecl) { return ((XSComplexTypeDecl) type).isDOMDerivedFrom( typeNamespaceArg, typeNameArg, derivationMethod); } } return false; } /** * NON-DOM: setting type used by the DOM parser * @see NodeImpl#setReadOnly */ public void setType(XSTypeDefinition type) { this.type = type; } }





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