/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2009 Sun Microsystems, Inc.
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*/
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package org.opends.sdk;
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import java.util.Collection;
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import java.util.concurrent.TimeUnit;
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import org.opends.sdk.requests.BindRequest;
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import org.opends.sdk.requests.SearchRequest;
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import com.sun.opends.sdk.util.Validator;
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/**
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* This class contains methods for creating and manipulating connection
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* factories and connections.
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*/
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public final class Connections
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{
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/**
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* Creates a new authenticated connection factory which will obtain
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* connections using the provided connection factory and immediately
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* perform the provided Bind request.
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* <p>
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* The connections returned by an authenticated connection factory
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* support all operations with the exception of Bind requests.
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* Attempts to perform a Bind will result in an {@code
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* UnsupportedOperationException}.
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* <p>
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* If the Bind request fails for some reason (e.g. invalid
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* credentials), then the connection attempt will fail and an {@code
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* ErrorResultException} will be thrown.
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*
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* @param factory
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* The connection factory to use for connecting to the
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* Directory Server.
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* @param request
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* The Bind request to use for authentication.
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* @return The new connection pool.
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* @throws NullPointerException
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* If {@code factory} or {@code request} was {@code null}.
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*/
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public static ConnectionFactory newAuthenticatedConnectionFactory(
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ConnectionFactory factory, BindRequest request)
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throws NullPointerException
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{
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Validator.ensureNotNull(factory, request);
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return new AuthenticatedConnectionFactory(factory, request);
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}
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/**
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* Creates a new connection pool which will maintain {@code poolSize}
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* connections created using the provided connection factory.
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*
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* @param factory
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* The connection factory to use for creating new
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* connections.
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* @param poolSize
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* The maximum size of the connection pool.
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* @return The new connection pool.
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* @throws IllegalArgumentException
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* If {@code poolSize} is negative.
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* @throws NullPointerException
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* If {@code factory} was {@code null}.
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*/
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public static ConnectionFactory newConnectionPool(
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ConnectionFactory factory, int poolSize)
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throws IllegalArgumentException, NullPointerException
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{
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Validator.ensureNotNull(factory);
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Validator.ensureTrue(poolSize >= 0, "negative pool size");
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return new ConnectionPool(factory, poolSize);
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}
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/**
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* Creates a new connection factory providing fault tolerance across
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* multiple underlying connection factories.
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* <p>
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* The returned fail-over connection factory forwards connection
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* requests to one of the provided connection factories. If the
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* request fails for some reason (for example, due to network
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* failure), then the fail-over connection factory switches to another
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* connection faction, repeating the process until the connection
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* request succeeds, or until all the connection factories are
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* determined to be unavailable, in which case the connection request
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* will fail.
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* <p>
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* The implementation periodically attempts to connect to failed
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* connection factories in order to determine if they have become
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* available again.
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*
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* @param factories
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* The connection factories which will be used for fail-over.
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* @return The new fail-over connection factory.
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* @throws NullPointerException
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* If {@code factories} was {@code null}.
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*/
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public static ConnectionFactory newFailoverConnectionFactory(
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Collection<ConnectionFactory> factories)
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throws NullPointerException
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{
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FailoverLoadBalancingAlgorithm algorithm = new FailoverLoadBalancingAlgorithm(
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factories);
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return new LoadBalancingConnectionFactory(algorithm);
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}
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/**
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* Creates a new connection factory providing fault tolerance across
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* multiple underlying connection factories.
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* <p>
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* The returned fail-over connection factory forwards connection
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* requests to one of the provided connection factories. If the
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* request fails for some reason (for example, due to network
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* failure), then the fail-over connection factory switches to another
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* connection faction, repeating the process until the connection
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* request succeeds, or until all the connection factories are
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* determined to be unavailable, in which case the connection request
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* will fail.
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* <p>
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* The implementation periodically attempts to connect to failed
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* connection factories in order to determine if they have become
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* available again.
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*
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* @param factories
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* The connection factories which will be used for fail-over.
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* @return The new fail-over connection factory.
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* @throws NullPointerException
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* If {@code factories} was {@code null}.
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*/
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public static ConnectionFactory newFailoverConnectionFactory(
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ConnectionFactory... factories) throws NullPointerException
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{
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FailoverLoadBalancingAlgorithm algorithm = new FailoverLoadBalancingAlgorithm(
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factories);
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return new LoadBalancingConnectionFactory(algorithm);
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}
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/**
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* Creates a new connection factory which will create connections
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* using the provided connection factory and periodically probe any
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* created connections in order to detect that they are still alive.
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*
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* @param factory
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* The connection factory to use for creating connections.
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* @param timeout
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* The time to wait between keep-alive probes.
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* @param unit
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* The time unit of the timeout argument.
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* @return The new heart-beat connection factory.
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* @throws IllegalArgumentException
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* If {@code timeout} was negative.
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* @throws NullPointerException
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* If {@code factory} or {@code unit} was {@code null}.
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*/
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public static ConnectionFactory newHeartBeatConnectionFactory(
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ConnectionFactory factory, long timeout, TimeUnit unit)
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throws IllegalArgumentException, NullPointerException
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{
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Validator.ensureNotNull(factory, unit);
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Validator.ensureTrue(timeout >= 0, "negative timeout");
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return new HeartBeatConnectionFactory(factory, timeout, unit);
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}
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/**
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* Creates a new connection factory which will create connections
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* using the provided connection factory and periodically probe any
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* created connections using the specified search request in order to
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* detect that they are still alive.
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*
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* @param factory
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* The connection factory to use for creating connections.
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* @param timeout
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* The time to wait between keep-alive probes.
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* @param unit
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* The time unit of the timeout argument.
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* @param heartBeat
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* The search request to use when pinging connections.
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* @return The new heart-beat connection factory.
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* @throws IllegalArgumentException
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* If {@code timeout} was negative.
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* @throws NullPointerException
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* If {@code factory}, {@code unit}, or {@code heartBeat}
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* was {@code null}.
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*/
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public static ConnectionFactory newHeartBeatConnectionFactory(
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ConnectionFactory factory, long timeout, TimeUnit unit,
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SearchRequest heartBeat) throws IllegalArgumentException,
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NullPointerException
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{
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Validator.ensureNotNull(factory, unit, heartBeat);
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Validator.ensureTrue(timeout >= 0, "negative timeout");
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return new HeartBeatConnectionFactory(factory, timeout, unit,
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heartBeat);
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}
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// Prevent instantiation.
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private Connections()
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{
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// Do nothing.
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}
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}
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