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

 /*

  * Copyright (c) 1997, 2011, 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

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  */

 package com.sun.xml.internal.bind.v2.runtime.unmarshaller;

 import javax.xml.bind.JAXBException;

 import javax.xml.bind.UnmarshallerHandler;

 import com.sun.xml.internal.bind.WhiteSpaceProcessor;

 import com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl;

 import org.xml.sax.Attributes;

 import org.xml.sax.Locator;

 import org.xml.sax.SAXException;

 /**

  * Receives SAX events and convert them to our internal events.

  *

  * @author Kohsuke Kawaguchi

  */

 public final class SAXConnector implements UnmarshallerHandler {

     private LocatorEx loc;

     /**

      * SAX may fire consecutive characters event, but we don't allow it.

      * so use this buffer to perform buffering.

      */

     private final StringBuilder buffer = new StringBuilder();

     private final XmlVisitor next;

     private final UnmarshallingContext context;

     private final XmlVisitor.TextPredictor predictor;

     private static final class TagNameImpl extends TagName {

         String qname;

         public String getQname() {

             return qname;

         }

     }

     private final TagNameImpl tagName = new TagNameImpl();

     /**

      * @param externalLocator

      *      If the caller is producing SAX events from sources other than Unicode and angle brackets,

      *      the caller can override the default SAX {@link Locator} object by this object

      *      to provide better location information.

      */

     public SAXConnector(XmlVisitor next, LocatorEx externalLocator ) {

         this.next = next;

         this.context = next.getContext();

         this.predictor = next.getPredictor();

         this.loc = externalLocator;

     }

     public Object getResult() throws JAXBException, IllegalStateException {

         return context.getResult();

     }

     public UnmarshallingContext getContext() {

         return context;

     }

     public void setDocumentLocator(final Locator locator) {

         if(loc!=null)

             return; // we already have an external locator. ignore.

         this.loc = new LocatorExWrapper(locator);

     }

     public void startDocument() throws SAXException {

         next.startDocument(loc,null);

     }

     public void endDocument() throws SAXException {

         next.endDocument();

     }

     public void startPrefixMapping(String prefix, String uri) throws SAXException {

         next.startPrefixMapping(prefix,uri);

     }

     public void endPrefixMapping(String prefix) throws SAXException {

         next.endPrefixMapping(prefix);

     }

     public void startElement(String uri, String local, String qname, Attributes atts) throws SAXException {

         // work gracefully with misconfigured parsers that don't support namespaces

         if( uri==null || uri.length()==0 )

             uri="";

         if( local==null || local.length()==0 )

             local=qname;

         if( qname==null || qname.length()==0 )

             qname=local;

         boolean ignorable = true;

         StructureLoader sl;

         // not null only if element content is processed (StructureLoader is used)

         // ugly

         if((sl = this.context.getStructureLoader()) != null) {

             ignorable = ((ClassBeanInfoImpl)sl.getBeanInfo()).hasElementOnlyContentModel();

         }

         processText(ignorable);

         tagName.uri = uri;

         tagName.local = local;

         tagName.qname = qname;

         tagName.atts = atts;

         next.startElement(tagName);

     }

     public void endElement(String uri, String localName, String qName) throws SAXException {

         processText(false);

         tagName.uri = uri;

         tagName.local = localName;

         tagName.qname = qName;

         next.endElement(tagName);

     }

     public final void characters( char[] buf, int start, int len ) {

         if( predictor.expectText() )

             buffer.append(buf,start,len);

     }

     public final void ignorableWhitespace( char[] buf, int start, int len ) {

         characters(buf,start,len);

     }

     public void processingInstruction(String target, String data) {

         // nop

     }

     public void skippedEntity(String name) {

         // nop

     }

     private void processText( boolean ignorable ) throws SAXException {

         if( predictor.expectText() && (!ignorable || !WhiteSpaceProcessor.isWhiteSpace(buffer)))

             next.text(buffer);

         buffer.setLength(0);

     }

 }