external/storm-cassandra/src/main/java/org/apache/storm/cassandra/executor/AsyncResultSetHandler.java

/**
 * 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.storm.cassandra.executor;

import com.datastax.driver.core.ResultSet;
import java.io.Serializable;

/**
 * Default handler for batch asynchronous execution.
 */
public interface AsyncResultSetHandler<T> extends Serializable {

    public static final AsyncResultSetHandler NO_OP_HANDLER = new AsyncResultSetHandler() {
        @Override
        public void failure(Throwable t, Object inputs) {
            /** no-operation **/
        }

        @Override
        public void success(Object inputs, ResultSet resultSet) {
            /** no-operation **/
        }

    };

    /**
     * This method is responsible for failing specified inputs.
     *
     * @param t The cause the failure.
     * @param inputs The input tuple proceed.
     */
    void failure(Throwable t, T inputs);

    /**
     * This method is responsible for acknowledging specified inputs.
     *
     * @param inputs The input tuple proceed.
     */
    void success(T inputs, ResultSet resultSet);

}