com.gwtplatform.dispatch.client.DispatchService Maven / Gradle / Ivy
/**
* Copyright 2010 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.client;
import com.google.gwt.user.client.rpc.RemoteService;
import com.gwtplatform.dispatch.shared.Action;
import com.gwtplatform.dispatch.shared.ActionException;
import com.gwtplatform.dispatch.shared.Result;
import com.gwtplatform.dispatch.shared.ServiceException;
/**
* The base class of the synchronous dispatcher service. The server-side
* implementation is {@link com.gwtplatform.dispatch.server.guice.DispatchServiceImpl}
* and the async client-side version is {@link DispatchServiceAsync}.
*
* This class is closely related to
* {@link com.gwtplatform.dispatch.server.Dispatch}, in theory the latter
* wouldn't be needed, but we use it to workaround a GWT limitation described in
* {@link com.gwtplatform.dispatch.client.DispatchAsync}.
*
* @see com.gwtplatform.dispatch.client.DispatchAsync
* @see com.gwtplatform.dispatch.server.Dispatch
* @see com.gwtplatform.dispatch.server.guice.DispatchImpl
* @see com.gwtplatform.dispatch.client.DispatchService
* @see com.gwtplatform.dispatch.client.DispatchServiceAsync
* @see com.gwtplatform.dispatch.server.guice.DispatchServiceImpl
*
* @author Philippe Beaudoin
*/
public interface DispatchService extends RemoteService {
/**
* This method is called server-side whenever a new action is dispatched.
*
* @see DispatchServiceAsync#execute
*
* @param cookieSentByRPC This is the content of the security cookie accessed
* on the client (in javascript), its goal is to prevent XSRF
* attacks. See {@link SecurityCookieAccessor} for more details.
* @param action The {@link Action} to execute.
* @return The {@link Result} of the action.
* @throws ActionException Thrown if the action could not be executed for
* application-specific reasons. User handlers should always throw
* {@link ActionException} or derived classes.
* @throws ServiceException Thrown if the action could not be executed because
* of a service error.
*/
Result execute(String cookieSentByRPC, Action action)
throws ActionException, ServiceException;
/**
* This method is called server-side whenever a previously executed action
* needs to be undone.
*
* @see DispatchServiceAsync#undo
*
* @param cookieSentByRPC This is the content of the security cookie accessed
* on the client (in javascript), its goal is to prevent XSRF
* attacks. See {@link SecurityCookieAccessor} for more details.
* @param action The {@link Action} to execute.
* @param result The {@link Result} of this action when it was executed.
* @throws ActionException Thrown if the action could not be undone for
* application-specific reasons. User handlers should always throw
* {@link ActionException} or derived classes.
* @throws ServiceException Thrown if the action could not be undone because
* of a service error.
*/
void undo(String cookieSentByRPC, Action action, Result result)
throws ActionException, ServiceException;
}