gov/nasa/worldwind/retrieve/RetrieveToFilePostProcessor.java

   1 /*
   2 Copyright (C) 2001, 2006 United States Government
   3 as represented by the Administrator of the
   4 National Aeronautics and Space Administration.
   5 All Rights Reserved.
   6 */
   7 package gov.nasa.worldwind.retrieve;
   8
   9 import gov.nasa.worldwind.exception.WWRuntimeException;
  10 import gov.nasa.worldwind.util.Logging;
  11
  12 import java.util.logging.Level;
  13
  14 /**
  15  * @author Tom Gaskins
  16  * @version $Id: RetrieveToFilePostProcessor.java 2471 2007-07-31 21:50:57Z tgaskins $
  17  */
  18 public final class RetrieveToFilePostProcessor implements RetrievalPostProcessor
  19 {
  20     java.io.File destination;
  21
  22     /**
  23      * @param destination
  24      * @throws IllegalArgumentException if <code>destination</code> is null
  25      */
  26     public RetrieveToFilePostProcessor(java.io.File destination)
  27     {
  28         if (destination == null)
  29         {
  30             String message = Logging.getMessage("nullValue.DestNull");
  31             Logging.logger().severe(message);
  32             throw new IllegalArgumentException(message);
  33         }
  34
  35         this.destination = destination;
  36     }
  37
  38     /**
  39      * @param retriever
  40      * @return
  41      * @throws IllegalArgumentException if <code>retriever</code> is null
  42      */
  43     public java.nio.ByteBuffer run(Retriever retriever)
  44     {
  45         if (retriever == null)
  46         {
  47             String message = Logging.getMessage("nullValue.RetrieverIsNull");
  48             Logging.logger().severe(message);
  49             throw new IllegalArgumentException(message);
  50         }
  51
  52         try
  53         {
  54             java.nio.ByteBuffer buffer = retriever.getBuffer();
  55             if (buffer == null)
  56             {
  57                 Logging.logger().log(Level.SEVERE, "RetrieveToFilePostProcessor.NullBufferPostprocessing",
  58                     retriever.getName());
  59                 return null;
  60             }
  61
  62             java.io.FileOutputStream fos = null;
  63             try
  64             {
  65                 fos = new java.io.FileOutputStream(this.destination);
  66                 fos.getChannel().write(buffer);
  67                 return null;
  68             }
  69             catch (java.io.IOException e)
  70             {
  71                 throw e;
  72             }
  73             finally
  74             {
  75                 if (fos != null)
  76                     fos.close();
  77             }
  78         }
  79         catch (java.io.IOException e)
  80         {
  81             String message = Logging.getMessage("RetrieveToFilePostProcessor.ErrorPostprocessing", retriever.getName());
  82             Logging.logger().severe(message);
  83             throw new WWRuntimeException(message, e);
  84         }
  85     }
  86 }