/*
* Copyright (C) 2013 Red Hat, Inc. and/or its affiliates.
*
* 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.common.client.api;
/**
* An interface that can be used as the injection point for a (probably
* generated) proxy that invokes remote methods and gives their return values to
* the supplied callbacks.
*
* @author Mike Brock
*/
public interface Caller<T> {
/**
* Returns an instance of the proxy that can invoke service methods on the
* service described by {@code T}.
*
* @return an instance of the proxy that can invoke service methods on the
* service described by {@code T}.
*/
public T call();
/**
* Returns an instance of the proxy that can invoke service methods on the
* service described by {@code T}.
*
* @param callback
* the callback to be invoked when the remote call has completed in
* success. In the case of an error, a default error callback will be
* notified. Which one depends on the proxy implementation.
* <p>
* The provided callback must not be null.
* @return an instance of the proxy that can invoke service methods on the
* service described by {@code T}.
*/
public T call(RemoteCallback<?> callback);
/**
* Returns an instance of the proxy that can invoke service methods on the
* service described by {@code T}.
*
* @param callback
* the callback to be invoked when the remote call has completed in
* success. In the case of an error, a default error callback will be
* notified. Which one depends on the proxy implementation.
* <p>
* The callback must not be null.
* @param errorCallback
* the callback to be invoked when the remote call has completed
* in failure. No callback is invoked in the case of success.
* <p>
* The provided callback must not be null.
* @return an instance of the proxy that can invoke service methods on the
* service described by {@code T}.
*/
public T call(RemoteCallback<?> callback, ErrorCallback<?> errorCallback);
}