Examples of javax.naming.Reference

javax.naming.Reference
This class represents a reference to an object that is found outside of the naming/directory system.
Reference provides a way of recording address information about objects which themselves are not directly bound to the naming/directory system.
A Reference consists of an ordered list of addresses and class information about the object being referenced. Each address in the list identifies a communications endpoint for the same conceptual object. The "communications endpoint" is information that indicates how to contact the object. It could be, for example, a network address, a location in memory on the local machine, another process on the same machine, etc. The order of the addresses in the list may be of significance to object factories that interpret the reference.
Multiple addresses may arise for various reasons, such as replication or the object offering interfaces over more than one communication mechanism. The addresses are indexed starting with zero.
A Reference also contains information to assist in creating an instance of the object to which this Reference refers. It contains the class name of that object, and the class name and location of the factory to be used to create the object. The class factory location is a space-separated list of URLs representing the class path used to load the factory. When the factory class (or any class or resource upon which it depends) needs to be loaded, each URL is used (in order) to attempt to load the class.
A Reference instance is not synchronized against concurrent access by multiple threads. Threads that need to access a single Reference concurrently should synchronize amongst themselves and provide the necessary locking. @author Rosanna Lee @author Scott Seligman @see RefAddr @see StringRefAddr @see BinaryRefAddr @since 1.3

            if (MessageListener.class.equals(deployment.getMdbInterface())) {
                String name = "openejb/ejb/" + deployment.getDeploymentID().toString();


                String destinationId = deployment.getDestinationId();
                String jndiName = "java:openejb/Resource/" + destinationId;
                Reference reference = new IntraVmJndiReference(jndiName);


                bind(name, reference, bindings, beanInfo, MessageListener.class);
            }
        } catch (NamingException e) {
            throw new RuntimeException("Unable to bind mdb destination in jndi.", e);

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import javax.naming.spi.ObjectFactory;
import java.util.Hashtable;


public abstract class AbstractObjectFactory implements ObjectFactory {
    public Object getObjectInstance(Object object, Name name, Context context, Hashtable environment) throws Exception {
        Reference ref = (Reference) object;


        // the jndi context to use for the lookup (usually null which is the default context)
        String jndiProviderId = getProperty(ref, JNDI_PROVIDER_ID);


        // the jndi name

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        }


        // Binding a User Transaction reference
        if (container instanceof Context) {
            try {
                Reference ref = new TransactionRef();
                compCtx.bind("UserTransaction", ref);
                ContextTransaction transaction = namingResources.getTransaction();
                if (transaction != null) {
                    Iterator params = transaction.listProperties();
                    while (params.hasNext()) {
                        String paramName = (String) params.next();
                        String paramValue = (String) transaction.getProperty(paramName);
                        StringRefAddr refAddr = new StringRefAddr(paramName, paramValue);
                        ref.add(refAddr);
                    }
                }
            } catch (NameAlreadyBoundException e) {
                // Ignore because UserTransaction was obviously 
                // added via ResourceLink

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     * Set the specified EJBs in the naming context.
     */
    public void addEjb(ContextEjb ejb) {


        // Create a reference to the EJB.
        Reference ref = new EjbRef
            (ejb.getType(), ejb.getHome(), ejb.getRemote(), ejb.getLink());
        // Adding the additional parameters, if any
        Iterator params = ejb.listProperties();
        while (params.hasNext()) {
            String paramName = (String) params.next();
            String paramValue = (String) ejb.getProperty(paramName);
            StringRefAddr refAddr = new StringRefAddr(paramName, paramValue);
            ref.add(refAddr);
        }
        try {
            createSubcontexts(envCtx, ejb.getName());
            envCtx.bind(ejb.getName(), ref);
        } catch (NamingException e) {

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            else
                service.setJaxrpcmappingfile(jaxrpcURL.toString());
        }


        // Create a reference to the resource.
        Reference ref = new ServiceRef
            (service.getName(), service.getType(), service.getServiceqname(),
             service.getWsdlfile(), service.getJaxrpcmappingfile());
        // Adding the additional port-component-ref, if any
        Iterator portcomponent = service.getServiceendpoints();
        while (portcomponent.hasNext()) {
            String serviceendpoint = (String) portcomponent.next();
            StringRefAddr refAddr = new StringRefAddr(ServiceRef.SERVICEENDPOINTINTERFACE, serviceendpoint);
            ref.add(refAddr);
            String portlink = (String) service.getPortlink(serviceendpoint);
            refAddr = new StringRefAddr(ServiceRef.PORTCOMPONENTLINK, portlink);
            ref.add(refAddr);
        }
        // Adding the additional parameters, if any
        Iterator handlers = service.getHandlers();
        while (handlers.hasNext()) {
            String handlername = (String) handlers.next();

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     * Set the specified resources in the naming context.
     */
    public void addResource(ContextResource resource) {


        // Create a reference to the resource.
        Reference ref = new ResourceRef
            (resource.getType(), resource.getDescription(),
             resource.getScope(), resource.getAuth());
        // Adding the additional parameters, if any
        Iterator params = resource.listProperties();
        while (params.hasNext()) {
            String paramName = (String) params.next();
            String paramValue = (String) resource.getProperty(paramName);
            StringRefAddr refAddr = new StringRefAddr(paramName, paramValue);
            ref.add(refAddr);
        }
        try {
            if (logger.isDebugEnabled()) {
                logger.debug("  Adding resource ref " 
                             + resource.getName() + "  " + ref);
            }
            createSubcontexts(envCtx, resource.getName());
            envCtx.bind(resource.getName(), ref);
        } catch (NamingException e) {
            logger.error(sm.getString("naming.bindFailed", e));
        }


        if ("javax.sql.DataSource".equals(ref.getClassName())) {
            try {
                ObjectName on = createObjectName(resource);
                Object actualResource = envCtx.lookup(resource.getName());
                Registry.getRegistry(null, null).registerComponent(actualResource, on, null);
                objectNames.put(resource.getName(), on);

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     * Set the specified resources in the naming context.
     */
    public void addResourceEnvRef(ContextResourceEnvRef resourceEnvRef) {


        // Create a reference to the resource env.
        Reference ref = new ResourceEnvRef(resourceEnvRef.getType());
        // Adding the additional parameters, if any
        Iterator params = resourceEnvRef.listProperties();
        while (params.hasNext()) {
            String paramName = (String) params.next();
            String paramValue = (String) resourceEnvRef.getProperty(paramName);
            StringRefAddr refAddr = new StringRefAddr(paramName, paramValue);
            ref.add(refAddr);
        }
        try {
            if (logger.isDebugEnabled())
                log.debug("  Adding resource env ref " + resourceEnvRef.getName());
            createSubcontexts(envCtx, resourceEnvRef.getName());

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     * Set the specified resource link in the naming context.
     */
    public void addResourceLink(ContextResourceLink resourceLink) {


        // Create a reference to the resource.
        Reference ref = new ResourceLinkRef
            (resourceLink.getType(), resourceLink.getGlobal(),
             resourceLink.getFactory(),null);
        Iterator i = resourceLink.listProperties();
        while (i.hasNext()) {
            String key = i.next().toString();
            Object val = resourceLink.getProperty(key);
            if (val!=null) {
                StringRefAddr refAddr = new StringRefAddr(key, val.toString());
                ref.add(refAddr);
            }
        }


        javax.naming.Context ctx = 
            "UserTransaction".equals(resourceLink.getName())

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  @Override
  public Reference getReference() throws NamingException {
    //Expect Hibernate Core to use one StringRefAddr based address
    String uuid = String.valueOf( delegate.getReference().get( 0 ).getContent() );
    return new Reference(
        OgmSessionFactoryImpl.class.getName(),
        new StringRefAddr( "uuid", uuid ),
        OgmSessionFactoryObjectFactory.class.getName(),
        null
        );

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                    return null;
                }
                return parseEntry(prop, value);


            case ResponseCodes.JNDI_REFERENCE:
                Reference ref = (Reference)res.getResult();
                try {
                    return NamingManager.getObjectInstance(ref, getNameParser(name).parse(name), this, env);
                } catch (Exception e) {
                    throw (NamingException) new NamingException("Could not dereference " + ref).initCause(e);
                }

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