Coverage report

  %line %branch
org.apache.jcs.auxiliary.disk.indexed.IndexedDiskElementDescriptor
72% 
95% 

 1   
 package org.apache.jcs.auxiliary.disk.indexed;
 2   
 
 3   
 /*
 4   
  * Licensed to the Apache Software Foundation (ASF) under one
 5   
  * or more contributor license agreements.  See the NOTICE file
 6   
  * distributed with this work for additional information
 7   
  * regarding copyright ownership.  The ASF licenses this file
 8   
  * to you under the Apache License, Version 2.0 (the
 9   
  * "License"); you may not use this file except in compliance
 10   
  * with the License.  You may obtain a copy of the License at
 11   
  *
 12   
  *   http://www.apache.org/licenses/LICENSE-2.0
 13   
  *
 14   
  * Unless required by applicable law or agreed to in writing,
 15   
  * software distributed under the License is distributed on an
 16   
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 17   
  * KIND, either express or implied.  See the License for the
 18   
  * specific language governing permissions and limitations
 19   
  * under the License.
 20   
  */
 21   
 
 22   
 import java.io.Serializable;
 23   
 
 24   
 /**
 25   
  * Disk objects are located by descriptor entries. These are saved on shutdown and loaded into
 26   
  * memory on startup.
 27   
  */
 28   
 public class IndexedDiskElementDescriptor
 29   
     implements Serializable, Comparable
 30   
 {
 31   
     private static final long serialVersionUID = -3029163572847659450L;
 32   
 
 33   
     /** Position of the cache data entry on disk. */
 34   
     long pos;
 35   
 
 36   
     /** Number of bytes the serialized form of the cache data takes. */
 37   
     public int len;
 38   
 
 39   
     /**
 40   
      * Set the offset (i.e. position, and the size of the element)
 41   
      * <p>
 42   
      * @param pos
 43   
      * @param data
 44   
      */
 45   
     public void init( long pos, byte[] data )
 46   
     {
 47  0 
         this.pos = pos;
 48  0 
         this.len = data.length;
 49  0 
     }
 50   
 
 51   
     /** Constructor for the DiskElementDescriptor object */
 52   
     public IndexedDiskElementDescriptor()
 53   
     {
 54  0 
         super();
 55  0 
     }
 56   
 
 57   
     /**
 58   
      * Constructs a usable disk element descriptor.
 59   
      * <p>
 60   
      * @param pos
 61   
      * @param len
 62   
      */
 63   
     public IndexedDiskElementDescriptor( long pos, int len )
 64  245151 
     {
 65  245156 
         this.pos = pos;
 66  245124 
         this.len = len;
 67  245168 
     }
 68   
 
 69   
     public String toString()
 70   
     {
 71  8 
         StringBuffer buf = new StringBuffer();
 72  8 
         buf.append( "[DED: " );
 73  8 
         buf.append( " pos = " + pos );
 74  8 
         buf.append( " len = " + len );
 75  8 
         buf.append( "]" );
 76  8 
         return buf.toString();
 77   
     }
 78   
 
 79   
     /**
 80   
      * Compares based on length.
 81   
      * <p>
 82   
      * @param o Object
 83   
      * @return int
 84   
      */
 85   
     public int compareTo( Object o )
 86   
     {
 87  1068700 
         if ( o == null )
 88   
         {
 89  0 
             return 1;
 90   
         }
 91   
 
 92  1069281 
         int oLen = ( (IndexedDiskElementDescriptor) o ).len;
 93  1069323 
         if ( oLen == len )
 94   
         {
 95  268141 
             return 0;
 96   
         }
 97  801066 
         else if ( oLen > len )
 98   
         {
 99  264132 
             return -1;
 100   
         }
 101  536619 
         else if ( oLen < len )
 102   
         {
 103  536937 
             return 1;
 104   
         }
 105  0 
         return 0;
 106   
     }
 107   
 }

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