/** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF 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.apache.cassandra.service; import java.io.IOException; import java.util.Collection; import java.util.List; import org.apache.cassandra.db.Row; import org.apache.cassandra.net.Message; public interface IResponseResolver<T> { /* * This Method resolves the responses that are passed in . for example : if * its write response then all we get is true or false return values which * implies if the writes were successful but for reads its more complicated * you need to look at the responses and then based on differences schedule * repairs . Hence you need to derive a response resolver based on your * needs from this interface. */ public T resolve(Collection<Message> responses) throws DigestMismatchException, IOException; public boolean isDataPresent(Collection<Message> responses); public void preprocess(Message message); /** * @param response * @return * @throws IOException */ T resolve(Message response) throws IOException; }