saxmarshaller.java

这是一个基于计算网格的web service。它用java编写。一旦安装完成

//
// This file was generated by the JavaTM Architecture for XML Binding(JAXB) Reference Implementation, v1.0.4-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: 2005.07.17 at 02:33:01 EDT 
//

package jwsgrid.xsd.schedqueryresult.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.
     *