/* * 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.samples.http; import java.util.Map; import javax.management.MBeanServer; import org.jboss.remoting.InvocationRequest; import org.jboss.remoting.ServerInvocationHandler; import org.jboss.remoting.ServerInvoker; import org.jboss.remoting.transport.http.HTTPMetadataConstants; import org.jboss.remoting.callback.InvokerCallbackHandler; /** * Remoting handler implementation for http invocations to * show how to return different data to client. * * @author Tom Elrod */ public class WebInvocationHandler implements ServerInvocationHandler { // Pre-defined returns to be sent back to client based on type of request. public static final String RESPONSE_VALUE = "This is the return to simple text based http invocation."; public static final ComplexObject OBJECT_RESPONSE_VALUE = new ComplexObject(5, "dub", false); public static final String HTML_PAGE_RESPONSE = "Test HTML page" + "

HTTP/Servlet Test HTML page

This is a simple page served for test." + "

Should show up in browser or via invoker client"; // Different request types that client may make public static final String NULL_RETURN_PARAM = "return_null"; public static final String OBJECT_RETURN_PARAM = "return_object"; public static final String STRING_RETURN_PARAM = "return_string"; /** * 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 from client is: " + invocation.getParameter()); if(NULL_RETURN_PARAM.equals(invocation.getParameter())) { return null; } else if(invocation.getParameter() instanceof ComplexObject) { return OBJECT_RESPONSE_VALUE; } else if(STRING_RETURN_PARAM.equals(invocation.getParameter())) { Map responseMetadata = invocation.getReturnPayload(); responseMetadata.put(HTTPMetadataConstants.RESPONSE_CODE, new Integer(207)); responseMetadata.put(HTTPMetadataConstants.RESPONSE_CODE_MESSAGE, "Custom response code and message from remoting server"); // Just going to return static string as this is just simple example code. return RESPONSE_VALUE; } else { return HTML_PAGE_RESPONSE; } } /** * 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 } }