//
   // This file was generated by the JavaTM Architecture for XML Binding(JAXB) Reference Implementation, v1.0.3-b18-fcs 
   // See <a href="http://java.sun.com/xml/jaxb">http://java.sun.com/xml/jaxb</a> 
   // Any modifications to this file will be lost upon recompilation of the source schema. 
   // Generated on: 2004.12.16 at 07:09:42 EST 
   //
   
   package net.sf.jour.config.impl.runtime;
   
  import java.util.HashSet;
  import java.util.Iterator;
  import java.util.Set;
  
  import javax.xml.bind.JAXBException;
  import javax.xml.bind.ValidationEvent;
  import javax.xml.bind.ValidationEventHandler;
  import javax.xml.bind.helpers.NotIdentifiableEventImpl;
  import javax.xml.bind.helpers.ValidationEventLocatorImpl;
  
  import org.xml.sax.ContentHandler;
  import org.xml.sax.SAXException;
  import org.xml.sax.helpers.AttributesImpl;
  
  import com.sun.xml.bind.JAXBAssertionError;
  import com.sun.xml.bind.JAXBObject;
  import com.sun.xml.bind.marshaller.IdentifiableObject;
  import com.sun.xml.bind.marshaller.Messages;
  import com.sun.xml.bind.marshaller.NamespacePrefixMapper;
  import com.sun.xml.bind.serializer.AbortSerializationException;
  import com.sun.xml.bind.serializer.Util;
  
  /***
   * XMLSerializer that produces SAX2 events.
   * 
   * To marshal an object, create an instance of SAXMarshaller
   * and call the serializeElements method of the XMLSerializable
   * object that you want to marshal.
   * 
   * @author  Kohsuke Kawaguchi
   */
  public class SAXMarshaller implements XMLSerializer
  {
      /***
       * "Attributes" object that is passed to the startElement event.
       * One object is reused throughout the marshalling.
       */
      private final AttributesImpl attributes = new AttributesImpl();
   
      /*** This object receives SAX2 events generated from the marshaller. */
      private final ContentHandler writer;
      
      /*** Marshaller object to which this object belongs. */
      private final MarshallerImpl owner;
      
      /*** Objects referenced through IDREF. */
      private final Set idReferencedObjects = new HashSet();
      
      /*** Objects with ID. */
      private final Set objectsWithId = new HashSet();
      
      /*** Object currently marshalling itself. */
      private JAXBObject currentTarget;
      
      /***
       * Creates a marshalling context by designating the ContentHandler
       * that receives generated SAX2 events.
       */
      public SAXMarshaller( ContentHandler _writer, NamespacePrefixMapper prefixMapper, MarshallerImpl _owner ) {
          this.writer = _writer;
          this.owner = _owner;
          this.nsContext = new NamespaceContextImpl(
              prefixMapper!=null?prefixMapper:defaultNamespacePrefixMapper);
      }
      
      /*** namespace context. */
      private final NamespaceContextImpl nsContext;
      
      public NamespaceContext2 getNamespaceContext() { return nsContext; }
      
      //
      //
      // name stack
      //
      //
      
      /*** Element name stack implemented as an array of (uri,local) pairs. */
      private String[] elementStack = new String[16];;
      private int elementLen=0;
      
      
      
      private void pushElement( String uri, String local ) {
          if(elementStack.length==elementLen) {
              // reallocate buffer
              String[] buf = new String[elementStack.length*2];
              System.arraycopy( elementStack, 0, buf, 0, elementStack.length );
              elementStack = buf;
          }
          elementStack[elementLen++] = uri;
         elementStack[elementLen++] = local;
     }
     
     private void popElement() { elementLen-=2;  }
     
     private String getCurrentElementUri()   { return elementStack[elementLen-2]; }
     private String getCurrentElementLocal() { return elementStack[elementLen-1]; }
     
     
     
     
     
     /***
      * Starts marshalling of an element.
      * Calling this method will push the internal state into the
      * internal stack.
      */
     public void startElement( String uri, String local ) throws SAXException {
         boolean isRoot = false;
         String suggestion = null;
         if( elementLen==0 ) {
             isRoot = true;
             // this is the root element. suggest this as the default namespace
             suggestion = "";
         }
         
         writePendingText();
         nsContext.startElement();
         pushElement(uri,local); // memorize element name
                 
         // declare this uri
         nsContext.declareNamespace(uri,suggestion,false);
         
         // if this is the root element, declare user-specified namespace URIs.
         if( isRoot ) {
             // work defensively. we are calling an user-defined method.
             String[] uris = nsContext.getNamespacePrefixMapper().getPreDeclaredNamespaceUris();
             if( uris!=null ) {
                 for( int i=0; i<uris.length; i++ ) {
                     if( uris[i]!=null )
                         nsContext.declareNamespace(uris[i],null,false);
                 }
             }
         }
     }
     
     
     private final PrefixCallback startPrefixCallback = new PrefixCallback() {
         public void onPrefixMapping( String prefix, String nsUri ) throws SAXException {
             writer.startPrefixMapping(prefix,nsUri);
         }
     };
     private final PrefixCallback endPrefixCallback = new PrefixCallback() {
         public void onPrefixMapping( String prefix, String nsUri ) throws SAXException {
             writer.endPrefixMapping(prefix);
         }
     };
     
     public void endNamespaceDecls() throws SAXException {
         nsContext.endNamespaceDecls();
     }
     
     /***
      * Switches to the "marshal child texts/elements" mode.
      * This method has to be called after the 1st pass is completed.
      */
     public void endAttributes() throws SAXException {
         // calculate QName of the element
         String uri = getCurrentElementUri();
         String local = getCurrentElementLocal();
         
         String prefix = nsContext.getPrefix(uri);
         _assert(prefix!=null);  // since we've declared it, it should be available
         
         String qname;
         if(prefix.length()!=0 ) 
             qname = prefix+':'+local;
         else
             qname = local;
 
         // fire startPrefixMapping events
         nsContext.iterateDeclaredPrefixes(startPrefixCallback);
         
         // fire the startElement event
         writer.startElement( uri, local, qname, attributes );
         
         
         // reset attributes
         attributes.clear();
         
         // prepare to collect texts
         textBuf.setLength(0);
     }
     
     /***
      * Ends marshalling of an element.
      * Pops the internal stack.
      */
     public void endElement() throws SAXException {
         writePendingText();
         
         String uri = getCurrentElementUri();
         String local = getCurrentElementLocal();
         
         String prefix = nsContext.getPrefix(uri);
         _assert(prefix!=null);      // we've declared it earlier.
         
         String qname;
         if(prefix.length()!=0)
             qname = prefix+':'+local;
         else
             qname = local;
         
         writer.endElement( uri, local, qname );
 
         // pop namespace bindings and
         // fire endPrefixMapping events
         nsContext.iterateDeclaredPrefixes(endPrefixCallback);
         
         popElement();
         
         // prepare to collect texts
         textBuf.setLength(0);
         
         nsContext.endElement();
     }
     
     
     /*** Buffer for collecting characters. */
     private final StringBuffer textBuf = new StringBuffer();
     
     /***
      * Marshalls text.
      * 
      * <p>
      * This method can be called (i) after the startAttribute method
      * and (ii) before the endAttribute method, to marshal attribute values.
      * If the method is called more than once, those texts are considered
      * as separated by whitespaces. For example,
      * 
      * <pre>
      * c.startAttribute();
      * c.text("abc");
      * c.text("def");
      * c.endAttribute("","foo");
      * </pre>
      * 
      * will generate foo="abc def".
      * 
      * <p>
      * Similarly, this method can be called after the endAttributes
      * method to marshal texts inside elements. The same rule about
      * multiple invokations apply to this case, too. For example,
      * 
      * <pre>
      * c.startElement("","foo");
      * c.endAttributes();
      * c.text("abc");
      * c.text("def");
      *   c.startElement("","bar");
      *   c.endAttributes();
      *   c.endElement();
      * c.text("ghi");
      * c.endElement();
      * </pre>
      * 
      * will generate <code>&lt;foo>abc def&lt;bar/>ghi&lt;/foo></code>.
      */
     public void text( String text, String fieldName ) throws SAXException {
         // If the assertion fails, it must be a bug of xjc.
         // right now, we are not expecting the text method to be called.
         if(text==null) {
             reportError(Util.createMissingObjectError(currentTarget,fieldName));
             return;
         }
     
         if(textBuf.length()!=0)
             textBuf.append(' ');
         textBuf.append(text);
     }
     
     /***
      * Writes pending text (characters inside elements) to the writer.
      * This method is called from startElement and endElement.
      */
     private void writePendingText() throws SAXException {
         // assert(textBuf!=null);
         int len = textBuf.length();
         
         if(len!=0)
             writer.characters( textBuf.toString().toCharArray(), 0, len );
     }
     
     /***
      * Starts marshalling of an attribute.
      * 
      * The marshalling of an attribute will be done by
      * <ol>
      *  <li>call the startAttribute method
      *  <li>call the text method (several times if necessary)
      *  <li>call the endAttribute method
      * </ol>
      * 
      * No two attributes can be marshalled at the same time.
      * Note that the whole attribute marshalling must be happened
      * after the startElement method and before the endAttributes method.
      */
     public void startAttribute( String uri, String local ) {
         // initialize the buffer to collect attribute value
         textBuf.setLength(0);
         
         // remember the attribute name. We'll use this value later.
         this.attNamespaceUri = uri;
         this.attLocalName = local;
     }
     
     // used to keep attribute names until the endAttribute method is called.
     private String attNamespaceUri;
     private String attLocalName;
 
     public void endAttribute() {
         // use CDATA as the attribute type. This preserves
         // successive processors to collapse whitespaces.
         // (we cannot prevent characters like #xD to be replaced to
         // #x20, though).
         //
         // strictly speaking, attribute value normalization should be
         // provessed by XML parser, so it's unclear whether XML writer
         // uses this type value.
         //
         // in any way, CDATA type is the safest choice here.
         
         String qname;
         if(attNamespaceUri.length()==0) {
             // default namespace. don't need prefix
             qname = attLocalName;
         } else {
             qname = nsContext.declareNamespace(attNamespaceUri,null,true)+':'+attLocalName;
         }
 
         attributes.addAttribute(attNamespaceUri,attLocalName,qname,"CDATA",textBuf.toString());
     }
     
     public String onID( IdentifiableObject owner, String value ) throws SAXException {
         objectsWithId.add(owner);
         return value;
     }
     public String onIDREF( IdentifiableObject obj ) throws SAXException {
         idReferencedObjects.add(obj);
         String id = obj.____jaxb____getId();
         if(id==null) {
             reportError( new NotIdentifiableEventImpl(
                 ValidationEvent.ERROR,
                 Messages.format(Messages.ERR_NOT_IDENTIFIABLE),
                 new ValidationEventLocatorImpl(obj) ) );
         }
         return id;
     }
     
     void reconcileID() throws AbortSerializationException {
         // find objects that were not a part of the object graph 
         idReferencedObjects.removeAll(objectsWithId);
         
         for( Iterator itr=idReferencedObjects.iterator(); itr.hasNext(); ) {
             IdentifiableObject o = (IdentifiableObject)itr.next();
             reportError( new NotIdentifiableEventImpl(
                 ValidationEvent.ERROR,
                 Messages.format(Messages.ERR_DANGLING_IDREF,o.____jaxb____getId()),
                 new ValidationEventLocatorImpl(o) ) );
         }
         
         // clear the garbage
         idReferencedObjects.clear();
         objectsWithId.clear();
     }
 
 
 
     public void childAsBody( JAXBObject o, String fieldName ) throws SAXException {
         if(o==null) {
             // if null is passed, it usually means that the content tree object
             // doesn't have some of its required property.
             reportMissingObjectError(fieldName);
             // as a marshaller, we should be generous, so we'll continue to marshal
             // this document by skipping this missing object.
             return;
         }
         
         JAXBObject oldTarget = currentTarget;
         currentTarget = o;
         
         owner.context.getGrammarInfo().castToXMLSerializable(o).serializeBody(this);
         
         currentTarget = oldTarget;
     }
     
     public void childAsAttributes( JAXBObject o, String fieldName ) throws SAXException {
         if(o==null) {
             reportMissingObjectError(fieldName);
             return;
         }
 
         JAXBObject oldTarget = currentTarget;
         currentTarget = o;
         
         owner.context.getGrammarInfo().castToXMLSerializable(o).serializeAttributes(this);
         
         currentTarget = oldTarget;
     }
     
     public void childAsURIs( JAXBObject o, String fieldName ) throws SAXException {
         if(o==null) {
             reportMissingObjectError(fieldName);
             return;
         }
         
         JAXBObject oldTarget = currentTarget;
         currentTarget = o;
         
         owner.context.getGrammarInfo().castToXMLSerializable(o).serializeURIs(this);
         
         currentTarget = oldTarget;
     }
     
 
     public void reportError( ValidationEvent ve ) throws AbortSerializationException {
         ValidationEventHandler handler;
         
         try {
             handler = owner.getEventHandler();
         } catch( JAXBException e ) {
             throw new AbortSerializationException(e);
         }
         
         if(!handler.handleEvent(ve)) {
             if(ve.getLinkedException() instanceof Exception)
                 throw new AbortSerializationException((Exception)ve.getLinkedException());
             else
                 throw new AbortSerializationException(ve.getMessage());
         }
     }
     
     
     public void reportMissingObjectError(String fieldName) throws SAXException {
         reportError(Util.createMissingObjectError(currentTarget,fieldName));
     }
     
     
     private static void _assert( boolean b ) {
         if(!b)
             throw new JAXBAssertionError();
     }
     
     /***
      * Default {@link NamespacePrefixMapper} implementation used when
      * it is not specified by the user.
      */
     private static NamespacePrefixMapper defaultNamespacePrefixMapper = new NamespacePrefixMapper() {
         public String getPreferredPrefix(String namespaceUri, String suggestion, boolean requirePrefix) {
             if( namespaceUri.equals("http://www.w3.org/2001/XMLSchema-instance") )
                 return "xsi";
             return suggestion;
         }
     };
 }