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

    
    public void endElement() throws SAXException {
        writePendingText();
        
        if(!acceptor.isAcceptState(null)) {
            // some required elements are missing
            // report error
            StringRef ref = new StringRef();
            acceptor.isAcceptState(ref);
            context.reportEvent(target,ref.str);
        }
        
        // pop the acceptor
        Acceptor child = acceptor;
        acceptor = (Acceptor)stack.pop();
        if(!acceptor.stepForward( child, null )) {
            // some required elements are missing.
            // report an error
            StringRef ref = new StringRef();
            acceptor.stepForward( child, ref );  // force recovery and obtain an error message.
            
            context.reportEvent(target,ref.str);
        }
        
        context.getNamespaceContext().endElement();
    }
    
    
    public void childAsAttributes( JAXBObject o, String fieldName ) throws SAXException {
        // do nothing
        
        // either the onMarshallableObjectInElement method
        // or the onMarshallableObjectInAttributeBody method will be 
        // called for every content tree objects.
        //
        // so we don't need to validate an object within this method.
    }

    public void childAsURIs( JAXBObject o, String fieldName ) throws SAXException {
        // ditto.
    }

    
    /** An empty <code>Attributes</code> object. */
    private static final AttributesImpl emptyAttributes = new AttributesImpl();
    
    /** namespace URI of dummy elements. TODO: allocate one namespace URI for this. */
    public static final String DUMMY_ELEMENT_NS =
        "http://java.sun.com/jaxb/xjc/dummy-elements";

    public void childAsBody( JAXBObject o, String fieldName ) throws SAXException {
        //final ValidatableObject vo = Util.toValidatableObject(o);
        final ValidatableObject vo =  jaxbContext.getGrammarInfo().castToValidatableObject(o);

        if(vo==null) {
            reportMissingObjectError(fieldName);
            return;
        }
        
        if( insideAttribute )   childAsAttributeBody(vo,fieldName);
        else                    childAsElementBody(o,vo);
    }
    
    private void childAsElementBody( Object o, ValidatableObject vo ) throws SAXException {
        String intfName = vo.getPrimaryInterface().getName();
        intfName = intfName.replace('$','.');
        
        // if the object implements the RIElement interface,
        // add a marker attribute to the dummy element.
        //
        // For example, if the object is org.acme.impl.FooImpl,
        // the dummy element will look like
        // <{DUMMY_ELEMENT_NS}org.acme.Foo
        //          {<URI of this element>}:<local name of this element>="" />
        // 
        // This extra attribute is used to validate wildcards.
//        AttributesImpl atts;
//        if(o instanceof RIElement) {
//            RIElement rie = (RIElement)o;
//            atts = new AttributesImpl();
//            atts.addAttribute(
//                rie.____jaxb_ri____getNamespaceURI(),
//                rie.____jaxb_ri____getLocalName(),
//                rie.____jaxb_ri____getLocalName(),  // use local name as qname
//                "CDATA",
//                "");    // we don't care about the attribute value
//        } else
//            atts = emptyAttributes;
            
        
        // feed a dummy element to the acceptor.
        StartTagInfo sti = new StartTagInfo(
            DUMMY_ELEMENT_NS,
            intfName,
            intfName/*just pass the local name as QName.*/,
            emptyAttributes,
            this );
        
            
        Acceptor child = acceptor.createChildAcceptor(sti,null);
        if(child==null) {
            // some required elements were missing. report errors
            StringRef ref = new StringRef();
            child = acceptor.createChildAcceptor(sti,ref);
            context.reportEvent(target,ref.str);
        }
        
        if(o instanceof RIElement) {
            RIElement rie = (RIElement)o;
            if(!child.onAttribute2(
                rie.____jaxb_ri____getNamespaceURI(),
                rie.____jaxb_ri____getLocalName(),
                rie.____jaxb_ri____getLocalName(),
                "",
                null, null, null ))
                
                // this object is not a valid member of the wildcard
                context.reportEvent(target,
                    Messages.format( Messages.INCORRECT_CHILD_FOR_WILDCARD,
                        rie.____jaxb_ri____getNamespaceURI(),
                        rie.____jaxb_ri____getLocalName() ));
        }
        
        child.onEndAttributes(sti,null);
        
        
        if(!acceptor.stepForward(child,null)) {
            // this can't be possible, as the dummy element was 
            // generated by XJC.
            throw new JAXBAssertionError();
        }

        
        // we need a separate validator instance to validate a child object
        context.validate(vo);
        
    }
    
    private void childAsAttributeBody( ValidatableObject vo, String fieldName ) throws SAXException {
        /*
        Dirty quick hack. When we split a schema into fragments, basically
        every chlid object needs a place holder in the fragment
        (so that the parent schema fragment can correctly validate that the
        child objects are at their supposed places.)
        
        For example, cconsider the following schema:
        
        imagine:
        <class>
          <attribute>
            <list>
              <oneOrMore>
                <ref name="bar"/>
              </oneOrMore>
            </list>
          </attribute>
        </class>
        
        In our algorithm, the corresponding schema fragment will be:
        
        <class>
          <attribute>
            <list>
              <oneOrMore>
                <value>\u0000full.class.name.of.BarImpl</value>
              </oneOrMore>
            </list>
          </attribute>
        </class>
        
        If we find a child object inside an attribute
        (that's why we are in this method BTW),
        we generate a class name (with a special marker \u0000).
        */
        
        // put a class name with a special marker \u0000. This char is an invalid
        // XML char, so sensible datatypes should reject this (although many
        // datatype implementations will accept it in actuality)
        text("\u0000"+vo.getPrimaryInterface().getName(),fieldName);

        // validate a child object
        context.validate(vo);
    }


    public void reportError( ValidationEvent e ) throws AbortSerializationException {
        context.reportEvent(target,e);
    }

//
//
// ID/IDREF validation
//
//
    public String onID( IdentifiableObject owner, String value ) throws SAXException {
        return context.onID(target,value);
    }
    public String onIDREF( IdentifiableObject value ) throws SAXException {
        return context.onIDREF(target,value.____jaxb____getId());
    }

//
//  
// ValidationContext implementation. Used by MSV to obtain
// contextual information related to validation.
//
//
    public String getBaseUri() { return null; }
    public boolean isUnparsedEntity( String entityName ) {
        // abandon the validation of ENTITY type.
        return true;
    }
    public boolean isNotation( String notation ) {
        // abandon the validation of NOTATION type.
        return true;
    }
    public void onID( Datatype dt, StringToken s ) {
        // ID/IDREF validation will be done by ourselves.
        // so we will not rely on the validator to perform this check.
        // because we will use multiple instances of validators, so 
        // they cannot check global consistency.
        
        // see onID/onIDREF of the ValidationContext.
    }
    public String resolveNamespacePrefix( String prefix ) {
        return context.getNamespaceContext().getNamespaceURI(prefix);
    }
    
}