/******************************************************************************* * Copyright 2011 Netflix * * 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.netflix.astyanax; import com.netflix.astyanax.connectionpool.OperationResult; import com.netflix.astyanax.connectionpool.exceptions.ConnectionException; import java.util.concurrent.Future; /** * Interface for an operation that can be executed on the cluster. * * @author elandau * * @param <R> */ public interface Execution<R> { /** * Block while executing the operations * * @return * @throws ConnectionException */ OperationResult<R> execute() throws ConnectionException; /** * Return a future to the operation. The operation will most likely be * executed in a separate thread where both the connection pool logic as * well as the actual operation will be executed. * * @return * @throws ConnectionException */ Future<OperationResult<R>> executeAsync() throws ConnectionException; }