msvvalidator.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 02:32:55 EDT 
//

package jwsgrid.xsd.jobhostdynamicinfo.impl.runtime;

import javax.xml.bind.ValidationEvent;

import org.relaxng.datatype.Datatype;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;

import com.sun.msv.grammar.IDContextProvider2;
import com.sun.msv.util.LightStack;
import com.sun.msv.util.StartTagInfo;
import com.sun.msv.util.StringRef;
import com.sun.msv.verifier.Acceptor;
import com.sun.msv.verifier.regexp.StringToken;
import com.sun.xml.bind.JAXBAssertionError;
import com.sun.xml.bind.JAXBObject;
import com.sun.xml.bind.RIElement;
import com.sun.xml.bind.marshaller.IdentifiableObject;
import com.sun.xml.bind.serializer.AbortSerializationException;
import com.sun.xml.bind.serializer.Util;
import com.sun.xml.bind.validator.Messages;

/**
 * XMLSerializer that calls the native interface of MSV and performs validation.
 * Used in a pair with a ValidationContext.
 * 
 * @author  Kohsuke Kawaguchi
 */
public class MSVValidator implements XMLSerializer, IDContextProvider2
{
    /** Current acceptor in use. */
    private Acceptor acceptor;
    
    /** Context object that coordinates the entire validation effort. */
    private final ValidationContext context;
    
    /** The object which we are validating. */
    private final ValidatableObject target;
    
    final DefaultJAXBContextImpl jaxbContext;
    
    /**
     * Acceptor stack. Whenever an element is found, the current acceptor is
     * pushed to the stack and new one is created.
     * 
     * LightStack is a light-weight stack implementation
     */
    private final LightStack stack = new LightStack();

    public NamespaceContext2 getNamespaceContext() {
        return context.getNamespaceContext();
    }
    
    /**
     * To use this class, call the static validate method.
     */
    private MSVValidator( DefaultJAXBContextImpl _jaxbCtx, ValidationContext _ctxt, ValidatableObject vo ) {
        jaxbContext = _jaxbCtx;
        acceptor = vo.createRawValidator().createAcceptor();
        context = _ctxt;
        target = vo;
    }
    
    /**
     * Validates the specified object and reports any error to the context.
     */
    public static void validate( DefaultJAXBContextImpl jaxbCtx, ValidationContext context, ValidatableObject vo )
            throws SAXException {
        try {
            new MSVValidator(jaxbCtx,context,vo)._validate();
        } catch( RuntimeException e ) {
            // sometimes when a conversion between Java object and
            // lexical value fails, it may throw an exception like
            // NullPointerException or NumberFormatException.
            //
            // catch them and report them as an error.
            context.reportEvent(vo,e);
        }
    }
    
    /** performs the validation to the object specified in the constructor. */
    private void _validate() throws SAXException {
        context.getNamespaceContext().startElement();
        
        // validate attributes
        target.serializeURIs(this);
        
        endNamespaceDecls();
        
        target.serializeAttributes(this);
        
        endAttributes();
        
        // validate content model
        target.serializeBody(this);
        writePendingText();
        
        context.getNamespaceContext().endElement();
        
        if(!acceptor.isAcceptState(null)) {
            // some elements are missing
            // report error
            StringRef ref = new StringRef();
            acceptor.isAcceptState(ref);
            context.reportEvent(target,ref.str);
        }
    }
    
    public void endNamespaceDecls() throws SAXException {
        context.getNamespaceContext().endNamespaceDecls();
    }
    
    public void endAttributes() throws SAXException {
        if(!acceptor.onEndAttributes( null, null )) {
            // some required attributes are missing.
            // report a validation error
            // Note that we don't know which property of this object
            // causes this error.
            StringRef ref = new StringRef();
            StartTagInfo sti = new StartTagInfo(
                currentElementUri,currentElementLocalName,currentElementLocalName,
                emptyAttributes,this);
            acceptor.onEndAttributes( sti, ref );
            context.reportEvent(target,ref.str);
        }
    }
    
    /** stores text reported by the text method. */
    private StringBuffer buf = new StringBuffer();
        
    public final void text( String text, String fieldName ) throws SAXException {
        if(text==null) {
            reportMissingObjectError(fieldName);
            return;
        }
        
        if(buf.length()!=0)
            buf.append(' ');
        buf.append(text);
    }
    
    public void reportMissingObjectError(String fieldName) throws SAXException {
        reportError(Util.createMissingObjectError(target,fieldName));
    }
    

    // used to keep attribute names until the endAttribute method is called.
    private String attNamespaceUri;
    private String attLocalName;
    private boolean insideAttribute;

    public void startAttribute( String uri, String local ) {
        // we will do the processing at the end element
        this.attNamespaceUri = uri;
        this.attLocalName = local;
        insideAttribute = true;
    }
    
    public void endAttribute() throws SAXException {
        insideAttribute = false;
        if(!acceptor.onAttribute2( attNamespaceUri, attLocalName,
            attLocalName /* we don't have QName, so just use the local name */,
            buf.toString(),
            this, null, null )) {
            
            // either the name was incorrect (which is quite unlikely),
            // or the value was wrong.
            // report an error
            StringRef ref = new StringRef();
            acceptor.onAttribute2( attNamespaceUri, attLocalName, attLocalName,
            buf.toString(), this, ref, null );
            
            context.reportEvent(target,ref.str);
        }
        
        buf = new StringBuffer();
    }
    
    private void writePendingText() throws SAXException {
        // assert(textBuf!=null);
        if(!acceptor.onText2( buf.toString(), this, null, null )) {
            // this text is invalid.
            // report an error
            StringRef ref = new StringRef();
            acceptor.onText2( buf.toString(), this, ref, null );
            context.reportEvent(target,ref.str);
        }
        
        if(buf.length()>1024)
            buf = new StringBuffer();
        else
            buf.setLength(0);
    }
    
    private String currentElementUri;
    private String currentElementLocalName;
    
    public void startElement( String uri, String local ) throws SAXException {
        writePendingText();
        
        context.getNamespaceContext().startElement();
        
        stack.push(acceptor);
        
        StartTagInfo sti = new StartTagInfo(uri,local,local,emptyAttributes,this);
        
        // we pass in an empty attributes, as there is just no way for us to
        // properly re-construct attributes. Fortunately, I know MSV is not using
        // attribute values, so this would work, but nevertheless this code is
        // ugly. This is one of the problems of the "middle" approach.
        Acceptor child = acceptor.createChildAcceptor( sti, null );
        if( child==null ) {
            // this element is invalid. probably, so this object is invalid
            // report an error
            StringRef ref = new StringRef();
            child = acceptor.createChildAcceptor( sti, ref );
            context.reportEvent(target,ref.str);
        }
        
        this.currentElementUri = uri;
        this.currentElementLocalName = local;
        
        acceptor = child;
    }