001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    package org.apache.hadoop.mapreduce;
019    
020    import java.io.DataInput;
021    import java.io.DataOutput;
022    import java.io.IOException;
023    
024    import org.apache.hadoop.classification.InterfaceAudience;
025    import org.apache.hadoop.classification.InterfaceStability;
026    import org.apache.hadoop.io.Text;
027    import org.apache.hadoop.io.Writable;
028    import org.apache.hadoop.io.WritableUtils;
029    
030    /**
031     *  Class to encapsulate Queue ACLs for a particular
032     *  user.
033     * 
034     */
035    @InterfaceAudience.Public
036    @InterfaceStability.Evolving
037    public class QueueAclsInfo implements Writable {
038    
039      private String queueName;
040      private String[] operations;
041      /**
042       * Default constructor for QueueAclsInfo.
043       * 
044       */
045      public QueueAclsInfo() {
046        
047      }
048    
049      /**
050       * Construct a new QueueAclsInfo object using the queue name and the
051       * queue operations array
052       * 
053       * @param queueName Name of the job queue
054       * @param operations
055       */
056      public QueueAclsInfo(String queueName, String[] operations) {
057        this.queueName = queueName;
058        this.operations = operations;    
059      }
060    
061      /**
062       * Get queue name.
063       * 
064       * @return name
065       */
066      public String getQueueName() {
067        return queueName;
068      }
069    
070      protected void setQueueName(String queueName) {
071        this.queueName = queueName;
072      }
073    
074      /**
075       * Get opearations allowed on queue.
076       * 
077       * @return array of String
078       */
079      public String[] getOperations() {
080        return operations;
081      }
082    
083      @Override
084      public void readFields(DataInput in) throws IOException {
085        queueName = Text.readString(in);
086        operations = WritableUtils.readStringArray(in);
087      }
088    
089      @Override
090      public void write(DataOutput out) throws IOException {
091        Text.writeString(out, queueName);
092        WritableUtils.writeStringArray(out, operations);
093      }
094    }