/*
* Copyright 2000-2014 Vaadin Ltd.
*
* 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 com.vaadin.client.communication;
import com.vaadin.client.ServerConnector;
import com.vaadin.client.metadata.InvokationHandler;
import com.vaadin.client.metadata.Method;
import com.vaadin.client.metadata.NoDataException;
import com.vaadin.client.metadata.TypeData;
import com.vaadin.shared.communication.MethodInvocation;
import com.vaadin.shared.communication.ServerRpc;
/**
* Class for creating proxy instances for Client to Server RPC.
*
* @since 7.0
*/
public class RpcProxy {
public static <T extends ServerRpc> T create(Class<T> rpcInterface,
ServerConnector connector) {
try {
return (T) TypeData.getType(rpcInterface).createProxy(
new RpcInvokationHandler(rpcInterface, connector));
} catch (NoDataException e) {
throw new IllegalStateException("There is no information about "
+ rpcInterface
+ ". Did you forget to compile the widgetset?");
}
}
private static final class RpcInvokationHandler implements
InvokationHandler {
private final Class<?> rpcInterface;
private final ServerConnector connector;
private RpcInvokationHandler(Class<?> rpcInterface,
ServerConnector connector) {
this.rpcInterface = rpcInterface;
this.connector = connector;
}
@Override
public Object invoke(Object target, Method method, Object[] params) {
MethodInvocation invocation = new MethodInvocation(
connector.getConnectorId(), rpcInterface.getName(),
method.getName(), params);
connector.getConnection().addMethodInvocationToQueue(invocation,
method.isDelayed(), method.isLastOnly());
// No RPC iface should have a return value
return null;
}
}
}