/*

  * #%L

  * IsMaster.java - mongodb-async-driver - Allanbank Consulting, Inc.

  * %%

  * Copyright (C) 2011 - 2014 Allanbank Consulting, Inc.

  * %%

  * Licensed 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.

  * #L%

  */

 package com.allanbank.mongodb.client.message;

 import com.allanbank.mongodb.bson.Document;

 import com.allanbank.mongodb.bson.builder.BuilderFactory;

 import com.allanbank.mongodb.bson.builder.DocumentBuilder;

 import com.allanbank.mongodb.bson.impl.ImmutableDocument;

 /**

  * Provides a convenient mechanism for creating a <a href=

  * "http://docs.mongodb.org/manual/reference/command/isMaster/" >ismaster</a>

  * command.

  * <p>

  * This is a helper class for retrieving the status of replica sets. The results

  * of this command will look like:

  * </p>

  * <blockquote>

  * 

  * <pre>

  * <code>

  * {

  *         "ismaster" : false,

  *         "secondary" : true,

  *         "hosts" : [

  *                 "ny1.acme.com",

  *                 "ny2.acme.com",

  *                 "sf1.acme.com"

  *         ],

  *         "passives" : [

  *              "ny3.acme.com",

  *              "sf3.acme.com"

  *         ],

  *         "arbiters" : [

  *             "sf2.acme.com",

  *         ]

  *         "primary" : "ny2.acme.com",

  *         "ok" : true

  * }

  * </code>

  * </pre>

  * 

  * </blockquote>

  * 

  * 

  * @api.no This class is <b>NOT</b> part of the drivers API. This class may be

  *         mutated in incompatible ways between any two releases of the driver.

  * @copyright 2011-2013, Allanbank Consulting, Inc., All Rights Reserved

  */

 public class IsMaster extends AdminCommand {

     /** The ismaster "query" document. */

     public static final Document IS_MASTER;

     static {

         final DocumentBuilder builder = BuilderFactory.start();

         builder.addInteger("isMaster", 1);

         IS_MASTER = new ImmutableDocument(builder);

     }

     /**

      * Create a new IsMaster command.

      */

     public IsMaster() {

         super(IS_MASTER);

     }

 }