Mercurial > jdk8-mips64-public > jaxws / file revision

 /*

  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.  Oracle designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Oracle in the LICENSE file that accompanied this code.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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  */

 package com.sun.xml.internal.ws.util;

 import com.sun.istack.internal.NotNull;

 import com.sun.istack.internal.Nullable;

 import com.sun.xml.internal.ws.util.xml.XmlUtil;

 import org.w3c.dom.*;

 import javax.xml.XMLConstants;

 import javax.xml.namespace.NamespaceContext;

 import javax.xml.parsers.DocumentBuilder;

 import javax.xml.parsers.DocumentBuilderFactory;

 import javax.xml.parsers.FactoryConfigurationError;

 import javax.xml.parsers.ParserConfigurationException;

 import javax.xml.stream.XMLStreamException;

 import javax.xml.stream.XMLStreamWriter;

 import java.util.ArrayList;

 import java.util.Iterator;

 import java.util.List;

 /**

  * @author JAXWS Development Team

  */

 public class DOMUtil {

     private static DocumentBuilder db;

     /**

      * Creates a new DOM document.

      */

     public static Document createDom() {

         synchronized (DOMUtil.class) {

             if (db == null) {

                 try {

                     DocumentBuilderFactory dbf = XmlUtil.newDocumentBuilderFactory();

                     dbf.setNamespaceAware(true);

                     db = dbf.newDocumentBuilder();

                 } catch (ParserConfigurationException e) {

                     throw new FactoryConfigurationError(e);

                 }

             }

             return db.newDocument();

         }

     }

     /**

      * Traverses a DOM node and writes out on a streaming writer.

      *

      * @param node

      * @param writer

      */

     public static void serializeNode(Element node, XMLStreamWriter writer) throws XMLStreamException {

         writeTagWithAttributes(node, writer);

         if (node.hasChildNodes()) {

             NodeList children = node.getChildNodes();

             for (int i = 0; i < children.getLength(); i++) {

                 Node child = children.item(i);

                 switch (child.getNodeType()) {

                     case Node.PROCESSING_INSTRUCTION_NODE:

                         writer.writeProcessingInstruction(child.getNodeValue());

                         break;

                     case Node.DOCUMENT_TYPE_NODE:

                         break;

                     case Node.CDATA_SECTION_NODE:

                         writer.writeCData(child.getNodeValue());

                         break;

                     case Node.COMMENT_NODE:

                         writer.writeComment(child.getNodeValue());

                         break;

                     case Node.TEXT_NODE:

                         writer.writeCharacters(child.getNodeValue());

                         break;

                     case Node.ELEMENT_NODE:

                         serializeNode((Element) child, writer);

                         break;

                     default: break;

                 }

             }

         }

         writer.writeEndElement();

     }

     public static void writeTagWithAttributes(Element node, XMLStreamWriter writer) throws XMLStreamException {

         String nodePrefix = fixNull(node.getPrefix());

         String nodeNS = fixNull(node.getNamespaceURI());

         //fix to work with DOM level 1 nodes.

         String nodeLocalName = node.getLocalName()== null?node.getNodeName():node.getLocalName();

         // See if nodePrefix:nodeNS is declared in writer's NamespaceContext before writing start element

         // Writing start element puts nodeNS in NamespaceContext even though namespace declaration not written

         boolean prefixDecl = isPrefixDeclared(writer, nodeNS, nodePrefix);

         writer.writeStartElement(nodePrefix, nodeLocalName, nodeNS);

         if (node.hasAttributes()) {

             NamedNodeMap attrs = node.getAttributes();

             int numOfAttributes = attrs.getLength();

             // write namespace declarations first.

             // if we interleave this with attribue writing,

             // Zephyr will try to fix it and we end up getting inconsistent namespace bindings.

             for (int i = 0; i < numOfAttributes; i++) {

                 Node attr = attrs.item(i);

                 String nsUri = fixNull(attr.getNamespaceURI());

                 if (nsUri.equals(XMLConstants.XMLNS_ATTRIBUTE_NS_URI)) {

                     // handle default ns declarations

                     String local = attr.getLocalName().equals(XMLConstants.XMLNS_ATTRIBUTE) ? "" : attr.getLocalName();

                     if (local.equals(nodePrefix) && attr.getNodeValue().equals(nodeNS)) {

                         prefixDecl = true;

                     }

                     if (local.equals("")) {

                         writer.writeDefaultNamespace(attr.getNodeValue());

                     } else {

                         // this is a namespace declaration, not an attribute

                         writer.setPrefix(attr.getLocalName(), attr.getNodeValue());

                         writer.writeNamespace(attr.getLocalName(), attr.getNodeValue());

                     }

                 }

             }

         }

         // node's namespace is not declared as attribute, but declared on ancestor

         if (!prefixDecl) {

             writer.writeNamespace(nodePrefix, nodeNS);

         }

         // Write all other attributes which are not namespace decl.

         if (node.hasAttributes()) {

             NamedNodeMap attrs = node.getAttributes();

             int numOfAttributes = attrs.getLength();

             for (int i = 0; i < numOfAttributes; i++) {

                 Node attr = attrs.item(i);

                 String attrPrefix = fixNull(attr.getPrefix());

                 String attrNS = fixNull(attr.getNamespaceURI());

                 if (!attrNS.equals(XMLConstants.XMLNS_ATTRIBUTE_NS_URI)) {

                     String localName = attr.getLocalName();

                     if (localName == null) {

                         // TODO: this is really a bug in the caller for not creating proper DOM tree.

                         // will remove this workaround after plugfest

                         localName = attr.getNodeName();

                     }

                     boolean attrPrefixDecl = isPrefixDeclared(writer, attrNS, attrPrefix);

                     if (!attrPrefix.equals("") && !attrPrefixDecl) {

                         // attr has namespace but namespace decl is there in ancestor node

                         // So write the namespace decl before writing the attr

                         writer.setPrefix(attr.getLocalName(), attr.getNodeValue());

                         writer.writeNamespace(attrPrefix, attrNS);

                     }

                     writer.writeAttribute(attrPrefix, attrNS, localName, attr.getNodeValue());

                 }

             }

         }

     }

     private static boolean isPrefixDeclared(XMLStreamWriter writer, String nsUri, String prefix) {

         boolean prefixDecl = false;

         NamespaceContext nscontext = writer.getNamespaceContext();

         Iterator prefixItr = nscontext.getPrefixes(nsUri);

         while (prefixItr.hasNext()) {

             if (prefix.equals(prefixItr.next())) {

                 prefixDecl = true;

                 break;

             }

         }

         return prefixDecl;

     }

     /**

      * Gets the first child of the given name, or null.

      */

     public static Element getFirstChild(Element e, String nsUri, String local) {

         for (Node n = e.getFirstChild(); n != null; n = n.getNextSibling()) {

             if (n.getNodeType() == Node.ELEMENT_NODE) {

                 Element c = (Element) n;

                 if (c.getLocalName().equals(local) && c.getNamespaceURI().equals(nsUri)) {

                     return c;

                 }

             }

         }

         return null;

     }

     private static

     @NotNull

     String fixNull(@Nullable String s) {

         if (s == null) {

             return "";

         } else {

             return s;

         }

     }

     /**

      * Gets the first element child.

      */

     public static

     @Nullable

     Element getFirstElementChild(Node parent) {

         for (Node n = parent.getFirstChild(); n != null; n = n.getNextSibling()) {

             if (n.getNodeType() == Node.ELEMENT_NODE) {

                 return (Element) n;

             }

         }

         return null;

     }

     public static @NotNull

     List<Element> getChildElements(Node parent){

         List<Element> elements = new ArrayList<Element>();

         for (Node n = parent.getFirstChild(); n != null; n = n.getNextSibling()) {

             if (n.getNodeType() == Node.ELEMENT_NODE) {

                 elements.add((Element)n);

             }

         }

         return elements;

     }

 }