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/*
* Copyright (c) 2009-2010 jMonkeyEngine
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.network.rmi;
import com.jme3.network.HostedConnection;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashMap;
/**
* Contains various meta-data about an RMI interface.
*
* @author Kirill Vainer
*/
public class RemoteObject implements InvocationHandler {
/**
* Object ID
*/
short objectId;
/**
* Contains {@link MethodDef method definitions} for all exposed
* RMI methods in the remote RMI interface.
*/
MethodDef[] methodDefs;
/**
* Maps from methods locally retrieved from the RMI interface to
* a method ID.
*/
HashMap<Method, Integer> methodMap = new HashMap<Method, Integer>();
/**
* The {@link ObjectStore} which stores this RMI interface.
*/
ObjectStore store;
/**
* The client who exposed the RMI interface, or null if the server
* exposed it.
*/
HostedConnection client;
public RemoteObject(ObjectStore store, HostedConnection client){
this.store = store;
this.client = client;
}
private boolean methodEquals(MethodDef methodDef, Method method){
Class<?>[] interfaceTypes = method.getParameterTypes();
Class<?>[] defTypes = methodDef.paramTypes;
if (interfaceTypes.length == defTypes.length){
for (int i = 0; i < interfaceTypes.length; i++){
if (!defTypes[i].isAssignableFrom(interfaceTypes[i])){
return false;
}
}
return true;
}
return false;
}
/**
* Generates mappings from the given interface into the remote RMI
* interface's implementation.
*
* @param interfaceClass The interface class to use.
*/
public void loadMethods(Class<?> interfaceClass){
HashMap<String, ArrayList<Method>> nameToMethods
= new HashMap<String, ArrayList<Method>>();
for (Method method : interfaceClass.getDeclaredMethods()){
ArrayList<Method> list = nameToMethods.get(method.getName());
if (list == null){
list = new ArrayList<Method>();
nameToMethods.put(method.getName(), list);
}
list.add(method);
}
mapping_search: for (int i = 0; i < methodDefs.length; i++){
MethodDef methodDef = methodDefs[i];
ArrayList<Method> methods = nameToMethods.get(methodDef.name);
if (methods == null)
continue;
for (Method method : methods){
if (methodEquals(methodDef, method)){
methodMap.put(method, i);
continue mapping_search;
}
}
}
}
/**
* Callback from InvocationHandler.
*/
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
return store.invokeRemoteMethod(this, method, args);
}
}
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