/**
* Copyright 2013 ArcBees 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 com.gwtplatform.dispatch.rpc.client;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.gwtplatform.common.client.IndirectProvider;
import com.gwtplatform.dispatch.client.DelegatingDispatchRequest;
import com.gwtplatform.dispatch.client.DispatchCall;
import com.gwtplatform.dispatch.client.ExceptionHandler;
import com.gwtplatform.dispatch.client.GwtHttpDispatchRequest;
import com.gwtplatform.dispatch.client.OldDelegatingAsyncCallback;
import com.gwtplatform.dispatch.client.actionhandler.ClientActionHandler;
import com.gwtplatform.dispatch.client.actionhandler.ClientActionHandlerRegistry;
import com.gwtplatform.dispatch.rpc.client.interceptor.RpcInterceptedAsyncCallback;
import com.gwtplatform.dispatch.rpc.client.interceptor.RpcInterceptor;
import com.gwtplatform.dispatch.rpc.client.interceptor.RpcInterceptorRegistry;
import com.gwtplatform.dispatch.rpc.shared.Action;
import com.gwtplatform.dispatch.rpc.shared.DispatchServiceAsync;
import com.gwtplatform.dispatch.rpc.shared.Result;
import com.gwtplatform.dispatch.shared.DispatchRequest;
import com.gwtplatform.dispatch.shared.SecurityCookieAccessor;
/**
* A class representing an execute call to be sent to the server using RPC.
*
* @param <A> the {@link Action} type.
* @param <R> the {@link Result} type for this action.
*/
public class RpcDispatchExecuteCall<A extends Action<R>, R extends Result> extends DispatchCall<A, R> {
private final DispatchServiceAsync dispatchService;
private final RpcDispatchHooks dispatchHooks;
private final RpcInterceptorRegistry interceptorRegistry;
private final ClientActionHandlerRegistry clientActionHandlerRegistry;
RpcDispatchExecuteCall(
DispatchServiceAsync dispatchService,
ExceptionHandler exceptionHandler,
ClientActionHandlerRegistry clientActionHandlerRegistry,
RpcInterceptorRegistry interceptorRegistry,
SecurityCookieAccessor securityCookieAccessor,
RpcDispatchHooks dispatchHooks,
A action,
AsyncCallback<R> callback) {
super(exceptionHandler, securityCookieAccessor, action, callback);
this.dispatchService = dispatchService;
this.dispatchHooks = dispatchHooks;
this.interceptorRegistry = interceptorRegistry;
this.clientActionHandlerRegistry = clientActionHandlerRegistry;
}
@Override
public DispatchRequest execute() {
A action = getAction();
dispatchHooks.onExecute(action, false);
IndirectProvider<RpcInterceptor<?, ?>> interceptorIndirectProvider = interceptorRegistry.find(action);
if (interceptorIndirectProvider != null) {
DelegatingDispatchRequest dispatchRequest = new DelegatingDispatchRequest();
RpcInterceptedAsyncCallback<A, R> delegatingCallback = new RpcInterceptedAsyncCallback<A, R>(
this, action, getCallback(), dispatchRequest);
interceptorIndirectProvider.get(delegatingCallback);
return dispatchRequest;
} else {
// Maintaining support for client action handlers
DispatchRequest dispatchRequest = findClientActionHandlerRequest();
if (dispatchRequest == null) {
return processCall();
} else {
return dispatchRequest;
}
}
}
@Override
protected DispatchRequest processCall() {
return new GwtHttpDispatchRequest(dispatchService.execute(getSecurityCookie(), getAction(),
new AsyncCallback<R>() {
public void onFailure(Throwable caught) {
RpcDispatchExecuteCall.this.onExecuteFailure(caught);
dispatchHooks.onFailure(getAction(), caught, false);
}
public void onSuccess(R result) {
RpcDispatchExecuteCall.this.onExecuteSuccess(result);
dispatchHooks.onSuccess(getAction(), result, false);
}
}
));
}
@Deprecated
private DispatchRequest findClientActionHandlerRequest() {
DispatchRequest request = null;
A action = getAction();
IndirectProvider<ClientActionHandler<?, ?>> clientActionHandlerProvider =
clientActionHandlerRegistry.find(action.getClass());
if (clientActionHandlerProvider != null) {
DelegatingDispatchRequest dispatchRequest = new DelegatingDispatchRequest();
OldDelegatingAsyncCallback<A, R> delegatingCallback =
new OldDelegatingAsyncCallback<A, R>(this, action, getCallback(), dispatchRequest);
clientActionHandlerProvider.get(delegatingCallback);
request = dispatchRequest;
}
return request;
}
}