/*
* Copyright 2010 JBoss, a divison Red Hat, Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.errai.bus.server.io;
import org.jboss.errai.bus.client.api.Message;
import org.jboss.errai.bus.client.api.MessageCallback;
import org.jboss.errai.bus.client.api.ResourceProvider;
import org.jboss.errai.bus.client.api.base.MessageBuilder;
import org.jboss.errai.bus.client.api.base.MessageDeliveryFailure;
import org.jboss.errai.bus.client.api.base.Reply;
import org.jboss.errai.bus.client.framework.RequestDispatcher;
import org.jboss.errai.bus.client.protocols.MessageParts;
import java.lang.reflect.Method;
/**
* User: christopherbrock
* Date: 19-Jul-2010
* Time: 4:57:59 PM
*/
public class MethodEndpointDynamicParmCallback implements MessageCallback {
private final Object instance;
private final Method method;
private final String[] parms;
private final ParmType[] callPlan;
public MethodEndpointDynamicParmCallback(Object instance, Method method, String[] parms, Class[] parmTypes) {
this.instance = instance;
this.method = method;
this.parms = parms;
this.callPlan = new ParmType[parmTypes.length];
for (int i = 0; i < parmTypes.length; i++) {
if (Message.class.isAssignableFrom(parmTypes[i])) {
callPlan[i] = ParmType.Message;
}
else if (Reply.class.isAssignableFrom(parmTypes[i])) {
callPlan[i] = ParmType.Conversation;
}
else {
callPlan[i] = ParmType.Object;
}
}
}
public void callback(final Message message) {
try {
Object[] parmValues = new Object[parms.length];
for (int i = 0; i < parmValues.length; i++) {
switch (callPlan[i]) {
case Object:
parmValues[i] = message.get(Object.class, parms[i]);
break;
case Message:
parmValues[i] = message;
break;
case Conversation:
parmValues[i] = new Reply() {
final Message replyMessage = MessageBuilder.createConversation(message).getMessage();
public void setValue(Object value) {
replyMessage.set(MessageParts.Value, value);
}
public void set(String part, Object value) {
replyMessage.set(part, value);
}
public void set(Enum<?> part, Object value) {
replyMessage.set(part, value);
}
public void setProvidedPart(String part, ResourceProvider provider) {
replyMessage.setProvidedPart(part, provider);
}
public void setProvidedPart(Enum<?> part, ResourceProvider provider) {
replyMessage.setProvidedPart(part, provider);
}
public void reply() {
replyMessage.sendNowWith((RequestDispatcher) message.getResource(ResourceProvider.class,
RequestDispatcher.class.getName()).get());
}
};
break;
}
}
method.invoke(instance, parmValues);
}
catch (Exception e) {
throw new MessageDeliveryFailure(e);
}
}
enum ParmType {
Object,
Message,
Conversation
}
}