com.datastax.driver.core.DataStaxClusterHelper Maven / Gradle / Ivy

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Type 4 JDBC driver for Apache Cassandra built on top of existing great libs like java driver from DataStax. It supports Cassandra 2.x and above with improved SQL compatibility.

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/*
 *
 * 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 com.datastax.driver.core;

public class DataStaxClusterHelper {
    /**
     * Check if given Cluster instance still contains live sessions.
     *
     * @param cluster cluster instance that may or may not be null
     * @return true the cluster contains live session(s); false otherwise
     */
    public static boolean hasLiveSessions(Cluster cluster) {
        return cluster == null ? false : (!cluster.manager.isClosed() && cluster.manager.sessions.size() <= 1);
    }
}