org.apache.solr.common.cloud.ZkOperation Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of solr-solrj Show documentation

Apache Solr Solrj for jdk 1.5

The newest version!

/*
 *
 * 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.solr.common.cloud;

import java.io.IOException;

import org.apache.zookeeper.KeeperException;

/**
 * A callback object which can be used for implementing retry-able operations.
 *
 */
public abstract class ZkOperation {

    /**
     * Performs the operation - which may be involved multiple times if the connection
     * to ZooKeeper closes during this operation
     *
     * @return the result of the operation or null
     */
    public abstract Object execute() throws KeeperException, InterruptedException;
}