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/**
* Licensed to jclouds, Inc. (jclouds) under one or more
* contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. jclouds licenses this file
* to you 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.jclouds.http;
import java.util.concurrent.ExecutionException;
import com.google.common.util.concurrent.ListenableFuture;
/**
* Command that utilizes RESTFul apis and extracts <code>T</code> from the HttpResponse.
*
* @author Adrian Cole
*/
public interface TransformingHttpCommand<T> extends HttpCommand {
/**
* invoke and transform the response {@code <R>} into value type {@code <T>}
*
* @return future containing the expected value
*
* @throws ExecutionException
* if there is a fatal error preventing the command from invoking
*/
ListenableFuture<T> execute() throws ExecutionException;
}