Stephan King

Hi,
I am just playing around with JBoss Remoting - I have managed to successfully call a ProviderInterfaces Methods.
However now I would like to use the provider interface to return different Services to the Client.

For this I have made a new Interface for the Service and the corresponding Implementation on the Server - MedicalProviderInterface + MedicalProviderImpl

The ServiceProvider has a method that generates a new MedicalProviderImpl
private MedicalProviderInterface medicalprovider = null; public MedicalProviderInterface getMedicalServices() { medicalprovider = new MedicalProviderImpl(); return this.medicalprovider; }

In the client I perform following code for the call, only knows about MedicalProviderInterface and not MedicalProviderImpl:
//Call remote method provider ProviderInterface providerProcessor = (ProviderInterface) TransporterClient.createTransporterClient(locatorURI, ProviderInterface.class); //Get MedicalProvider MedicalProviderInterface medicalProvider = (MedicalProviderInterface)providerProcessor.getMedicalServices();

This results in the following error code:
java.lang.ClassNotFoundException: com.xxx.bl.MedicalProviderImpl at org.jboss.remoting.serialization.ClassLoaderUtility.loadClass(ClassLoaderUtility.java:103) at org.jboss.remoting.loading.RemotingClassLoader.loadClass(RemotingClassLoader.java:86) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247)

I know it is complaing about not having imported MedicalProviderImpl - but I want to be able to make the calls to MedicalProviderImpl on the server via the Inteface without importing it to the client. Also I would like to be albe to get these services via my Profider so that I have a single access point.

Many thanks in advanced for your help. If you can see any major flaws in my approach I would also appreciate any pointers.

Stephan

Currently I do not have any xml - I assume you mean an *-server.xml similar to this one:
<?xml version="1.0" encoding="UTF-8"?> <server> <mbean code="com.knitelius.remote.server.Server" name="jboss.remoting:service=Connector,transport=Socket" display-name="Socket transport Connector"> <attribute name="Configuration"> <config> <invoker transport="socket"> <attribute name="dataType" isParam="true">invocation</attribute> <attribute name="marshaller" isParam="true"> com.knitelius.remote.server.Server </attribute> <attribute name="unmarshaller" isParam="true"> com.knitelius.remote.server.Server </attribute> <attribute name="loaderport" isParam="true">5401</attribute> </invoker> </config> </attribute> </mbean> </server>

My current Server class looks like this what would the -server.xml have to look like?

/* * JBoss, Home of Professional Open Source * Copyright 2005, JBoss Inc., and individual contributors as indicated * by the @authors tag. See the copyright.txt in the distribution for a * full listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package com.knitelius.remote.server; import com.knitelius.lib.interfaces.ProviderInterface; import com.knitelius.bl.ProviderInterfaceImpl; import org.jboss.remoting.transporter.TransporterServer; /** * @author <a href="mailto:tom.elrod@jboss.com">Tom Elrod</a> */ public class Server { public static String locatorURI = "socket://localhost:5401/?serializationtype=jboss"; private TransporterServer server = null; public void start() throws Exception { server = TransporterServer.createTransporterServer(getLocatorURI(), new ProviderInterfaceImpl(),ProviderInterface.class.getName(), true); } protected String getLocatorURI() { return locatorURI; } public void stop() { if(server != null) { server.stop(); } } public static void main(String[] args) { Server server = new Server(); try { server.start(); System.out.println("Started Server: " + locatorURI); Thread.currentThread().sleep(60000); } catch(Exception e) { e.printStackTrace(); } finally { System.out.println("Server Stopped"); server.stop(); } } }

hi,
I tried to work my way through the guide, and I have managed to get the above code working but only as standalone. What do I have to do to get it to run in the jboss as server?

I know I have to configure some xml files but I am really not sure where to place them or what exactly I have to write in them to get this to work.

Thanks in advanced.

Hi guys,

I was wondering whether any of you have found any deasent Open Source GUI editors for GWT. I have only come across GWT Builder witch obviously is not OpenSource.

Thanks in advanced.

I am a bit confused as to what the exact purpous of JBoss AS is when you can code a Java RMI Server just as easily.
I am sure there are pleanty of good reasons, just I couldn't identfy them myself yet.

Thanks

Thank you for your help - comes down to RTFM. Thanks for pointing me the right direction.

Sorry to barge in on this thread - haven't really used RMI - does RMI have a default port or how is that allocated in this particular code?

Jaikiran Pai wrote:

Stephan Knitelius wrote:So far I have simply put the code into Eclipse linked it to an JBoss AS Server and hit deploy.

Where did you get that example from? And any specific reason why you are trying out that example?

It comes with Jboss Remoting - http://www.jboss.org/jbossremoting/downloads.html (version 2.5.2)

I thought it would be a good approch to getting started with jboss as server to make calls via JBoss Remoting - or do you have a better suggestion?

I really just want to be able to preform Remote Method calls - with a good framework.

^[+-]{0,1}[\d\,]*n?\.{0,1}\d+n?

This seems to work

For starters this website is handy - I will also have a look whats up with your regex

http://www.regexplanet.com/simple/index.html

So far I have simply put the code into Eclipse linked it to an JBoss AS Server and hit deploy.

No - I proably havn't done that since I am don't know how to do that. Can you help me out with that? As I said I am a total newbie to setting up Jboss AS Servers and all the configurations are still dark magic to me.

Thank you in advanced

I keep getting the following error message saying that no connection could be established:
org.jboss.remoting.CannotConnectException: Can not get connection to server. Problem establishing socket connection for InvokerLocator [socket://localhost:5400/?serializationtype=jboss]

The server is running - and the code seems to have been deployed successfully (since I can find it in the servers deploy folder).

Servercode:
/* * JBoss, Home of Professional Open Source * Copyright 2005, JBoss Inc., and individual contributors as indicated * by the @authors tag. See the copyright.txt in the distribution for a * full listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package org.jboss.remoting.helloworld.serialization; import javax.management.MBeanServer; import org.jboss.remoting.InvocationRequest; import org.jboss.remoting.InvokerLocator; import org.jboss.remoting.ServerInvocationHandler; import org.jboss.remoting.ServerInvoker; import org.jboss.remoting.samples.simple.SimpleServer; import org.jboss.remoting.callback.InvokerCallbackHandler; import org.jboss.remoting.transport.Connector; import com.knitelius.dataobejects.HelloWorldDO; /** * Simple remoting server that uses JBoss Serialization instead of standard java serialization. * Will receive and return a non-serializable payload. Uses inner class SampleInvocationHandler * as the invocation target handler class. * <p><b> * NOTE: This requires jdk 1.5 * </b><p> * * @author <a href="mailto:telrod@e2technologies.net">Tom Elrod</a> */ public class SerializationServer { // Default locator values private static String transport = "socket"; private static String host = "localhost"; private static int port = 5400; // String to be returned from invocation handler upon client invocation calls. private static final HelloWorldDO RESPONSE_VALUE = new HelloWorldDO("droolsAS Server", null,"droolsAS Server greets you"); public void setupServer(String locatorURI) throws Exception { // create the InvokerLocator based on url string format // to indicate the transport, host, and port to use for the // server invoker. InvokerLocator locator = new InvokerLocator(locatorURI); System.out.println("Starting remoting server with locator uri of: " + locatorURI); Connector connector = new Connector(locator); // creates all the connector's needed resources, such as the server invoker connector.create(); // create the handler to receive the invocation request from the client for processing SampleInvocationHandler invocationHandler = new SampleInvocationHandler(); // first parameter is sub-system name. can be any String value. connector.addInvocationHandler("sample", invocationHandler); // start with a new non daemon thread so // server will wait for request and not exit connector.start(); } /** * Can pass transport and port to be used as parameters. * Valid transports are 'rmi' and 'socket'. * * @param args */ public static void main(String[] args) { if(args != null && args.length == 3) { transport = args[0]; host = args[1]; port = Integer.parseInt(args[2]); } // NOTE: HAVE TO HAVE SERIALIZATION TYPE SET TO JBOSS FOR THIS SAMPLE String locatorURI = transport + "://" + host + ":" + port + "/?serializationtype=jboss"; SerializationServer server = new SerializationServer(); try { server.setupServer(locatorURI); // wait forever, let the user kill us at any point (at which point, the client will detect we went down) while(true) { Thread.sleep(1000); } } catch(Exception e) { e.printStackTrace(); } } /** * Simple invocation handler implementation. * This is the code that will be called with the invocation payload from the client. */ public static class SampleInvocationHandler implements ServerInvocationHandler { /** * called to handle a specific invocation * * @param invocation * @return * @throws Throwable */ public Object invoke(InvocationRequest invocation) throws Throwable { // Print out the invocation request System.out.println("Invocation request is: " + invocation.getParameter()); System.out.println("Returning response of: " + RESPONSE_VALUE); // Just going to return static string as this is just simple example code. return RESPONSE_VALUE; } /** * Adds a callback handler that will listen for callbacks from * the server invoker handler. * * @param callbackHandler */ public void addListener(InvokerCallbackHandler callbackHandler) { // NO OP as do not handling callback listeners in this example } /** * Removes the callback handler that was listening for callbacks * from the server invoker handler. * * @param callbackHandler */ public void removeListener(InvokerCallbackHandler callbackHandler) { // NO OP as do not handling callback listeners in this example } /** * set the mbean server that the handler can reference * * @param server */ public void setMBeanServer(MBeanServer server) { // NO OP as do not need reference to MBeanServer for this handler } /** * set the invoker that owns this handler * * @param invoker */ public void setInvoker(ServerInvoker invoker) { // NO OP as do not need reference back to the server invoker } } }

Client code:
/* * JBoss, Home of Professional Open Source * Copyright 2005, JBoss Inc., and individual contributors as indicated * by the @authors tag. See the copyright.txt in the distribution for a * full listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package org.jboss.remoting.helloworld.serialization; import org.jboss.remoting.Client; import org.jboss.remoting.InvokerLocator; import com.knitelius.dataobejects.HelloWorldDO; /** * Simple test client to make an invocation on remoting server using JBoss Serialization * instead of standard java serialization (with a non-serializable payload). * <p><b> * NOTE: This requires jdk 1.5 * </b><p> * @author <a href="mailto:telrod@e2technologies.net">Tom Elrod</a> */ public class SerializationClient { // Default locator values private static String transport = "socket"; private static String host = "localhost"; private static int port = 5400; public void makeInvocation(String locatorURI) throws Throwable { // create InvokerLocator with the url type string // indicating the target remoting server to call upon. InvokerLocator locator = new InvokerLocator(locatorURI); System.out.println("Calling remoting server with locator uri of: " + locatorURI); Client remotingClient = new Client(locator); remotingClient.connect(); HelloWorldDO payload = new HelloWorldDO("Client", null,"Hello Server"); System.out.println("Invoking server with request of '" + payload + "'"); Object response = remotingClient.invoke(payload); System.out.println("Invocation response: " + response); } /** * Can pass transport and port to be used as parameters. * Valid transports are 'rmi' and 'socket'. * * @param args */ public static void main(String[] args) { if(args != null && args.length == 3) { transport = args[0]; host = args[1]; port = Integer.parseInt(args[2]); } // NOTE: HAVE TO HAVE SERIALIZATION TYPE SET TO JBOSS FOR THIS SAMPLE String locatorURI = transport + "://" + host + ":" + port + "/?serializationtype=jboss"; SerializationClient client = new SerializationClient(); try { client.makeInvocation(locatorURI); } catch(Throwable e) { e.printStackTrace(); } } }

Many thanks in advanced.