Examples of javax.xml.bind.JAXBContext

javax.xml.bind.JAXBContext
The JAXBContext provides the JAXB users anchor to the implmentation and hos generated classes. A JAXBContext is used to obtain instances of {@link javax.xml.bind.Marshaller}, {@link javax.xml.bind.Unmarshaller}, and {@link javax.xml.bind.Validator}. To obtain a JAXBContext, the application invokes
```
 JAXBContext context = JAXBContext.newInstance("com.mycompany:com.mycompany.xml"); 
```
The list of colon separated package names matches the list in the schemas used to generate classes. In other words: If you have a schema using package name "com.mycompany.xml", then this package name has to be part of the list.

The JAXBContext class will scan the given list of packages for a file called jaxb.properties. This file contains the name of an instantiation class in the property {@link #JAXB_CONTEXT_FACTORY}. (See {@link #newInstance(String)} fordetails on how the class name is obtained.) Once such a file is found, the given class is loaded via {@link ClassLoader#loadClass(java.lang.String)}. The JAXBContext class demands, that the created object has a method
```
 public static JAXBContext createContext(String pPath, ClassLoader pClassLoader) throws JAXBException; 
```
This method is invoked with the same path and {@link ClassLoader} thanabove. See {@link #newInstance(String,ClassLoader)}} for details on the choice of the {@link ClassLoader}.

The created context will scan the same package path for implementation specific configuration details (in the case of the JaxMe application a file called Configuration.xml in any of the packages) and do whatever else is required to initialize the runtime. In particular it will invoke {@link DatatypeConverter#setDatatypeConverter(DatatypeConverterInterface)}.
@author JSR-31 @since JAXB1.0 @see Marshaller @see Unmarshaller @see Validator

            LOG.fine("unmarshalling: element namespaceURI: " + data.getNamespaceURI() + "\n" 
                     + "                       localName: " + data.getLocalName() + "\n"
                     + "             type: " + type  + "\n"
                     + "             type schema package name: " + packageName);            
        }
        JAXBContext context = null;
        Object obj = null;


        context = JAXBContext.newInstance(packageName, getClass().getClassLoader());
        Unmarshaller u = context.createUnmarshaller();
        if (doValidate) {
            u.setSchema(schema);
        }
        obj = u.unmarshal(data);
        if (obj instanceof JAXBElement<?>) {

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                try {
                    Boolean outbound = (Boolean)ctx.get(MessageContext.MESSAGE_OUTBOUND_PROPERTY); 
                    if (outbound) {
                        LogicalMessage msg = ctx.getMessage();
                        assertNotNull("logical message is null", msg);
                        JAXBContext jaxbCtx = JAXBContext.newInstance(GreetMe.class.getPackage().getName());
                        PingResponse resp = new PingResponse();
                        resp.getHandlersInfo().add(clientHandlerMessage);


                        msg.setPayload(resp, jaxbCtx);
                    }

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        super(name);
    }
    
    public void testRpcLit() throws Exception {
        Class<?> cls = GreeterRPCLit.class;
        JAXBContext ctx = JAXBEncoderDecoder.createJAXBContextForClass(cls);
        
        URL url = getClass().getResource("/wsdl/hello_world_rpc_lit.wsdl");
        assertNotNull("Could not find wsdl /wsdl/hello_world_rpc_lit.wsdl", url);

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    }
    */
    
    public void testDocLitBare() throws Exception {
        Class<?> cls = PutLastTradedPricePortType.class;
        JAXBContext ctx = JAXBEncoderDecoder.createJAXBContextForClass(cls);
        
        URL url = getClass().getResource("/wsdl/doc_lit_bare.wsdl");
        assertNotNull("Could not find wsdl /wsdl/doc_lit_bare.wsdl", url);

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    public static void addExtensions(ExtensionRegistry registry,
                                     Class<?> parentType,
                                     Class<? extends TExtensibilityElementImpl> cls) throws JAXBException {
        
        JAXBContext context = JAXBContext.newInstance(cls.getPackage().getName(), cls.getClassLoader());
        JAXBExtensionHelper helper = new JAXBExtensionHelper(context, cls);
        
        try {
            Class<?> objectFactory = Class.forName(cls.getPackage().getName() + ".ObjectFactory");
            Method methods[] = objectFactory.getDeclaredMethods();

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        Class cls[] = new Class[] {
            ObjectFactory.class,
            org.objectweb.celtix.ws.addressing.wsdl.ObjectFactory.class
        };
        JAXBContext context = JAXBContext.newInstance(cls);
        Unmarshaller u = context.createUnmarshaller();


        EndpointReferenceType ref = (EndpointReferenceType) 
                                    ((JAXBElement<?>)u.unmarshal(
                                        getClass().getResource("resources/reference2.xml"))).getValue();

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        checkSource("TestSOAPInputMessage", obj);        
    }
    
    public void testJAXBObjectRead() throws Exception {
        
        JAXBContext jc = JAXBContext.newInstance("org.objectweb.hello_world_soap_http.types"); 
        TestDynamicDataBindingCallback callback =  
            new TestDynamicDataBindingCallback(jc, Mode.PAYLOAD);        
        SOAPBodyDataReader<SOAPBody> soapBodyDataReader = new SOAPBodyDataReader<SOAPBody>(callback);
        Object obj = soapBodyDataReader.read(0, soapMsg.getSOAPBody());
        assertNotNull(obj);

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    }
    
    public void testJAXBObjectWrite() throws Exception {
        
        JAXBContext jc = JAXBContext.newInstance("org.objectweb.hello_world_soap_http.types");  
        TestDynamicDataBindingCallback callback =  
            new TestDynamicDataBindingCallback(jc, Mode.PAYLOAD);        
        TestSOAPBodyDataWriter<SOAPBody> soapBodyDataWriter = new TestSOAPBodyDataWriter<SOAPBody>(callback);
        GreetMe greetMe = new GreetMe();
        greetMe.setRequestType("DIPLO");

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   private static final Class[] CTX_CLASS = {ManagedConnectionFactoryDeploymentGroup.class};
   
   public static String marshalResourceAsString(ManagedConnectionFactoryDeploymentGroup group) throws Exception
   {
      Class[] classes = {ManagedConnectionFactoryDeploymentGroup.class, ManagedConnectionFactoryDeploymentMetaData.class, LocalDataSourceDeploymentMetaData.class, NonXADataSourceDeploymentMetaData.class, DataSourceDeploymentMetaData.class};      
      JAXBContext context = JAXBContext.newInstance(classes);      
      Marshaller m = context.createMarshaller();      
      JAXBElement element = new JAXBElement(new QName("", "datasources"), group.getClass(), group);
      StringWriter w = new StringWriter();
      m.marshal(element, w);      
      return w.toString();      
   }

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      return w.toString();      
   }
   
   public static ManagedConnectionFactoryDeploymentGroup unmarshalSource(String content) throws Exception
   {
      JAXBContext ctx = JAXBContext.newInstance(CTX_CLASS);
      Unmarshaller um = ctx.createUnmarshaller();
      StringReader r = new StringReader(content);
      InputSource is = new InputSource(r);
      Source s = new SAXSource(is);
      JAXBElement<ManagedConnectionFactoryDeploymentGroup> elem = um.unmarshal(s, ManagedConnectionFactoryDeploymentGroup.class);
      ManagedConnectionFactoryDeploymentGroup group = elem.getValue();

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