gov/nasa/worldwind/cache/BasicDataFileCache.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.cache;
   8
   9 import gov.nasa.worldwind.Configuration;
  10 import gov.nasa.worldwind.avlist.AVKey;
  11 import gov.nasa.worldwind.util.Logging;
  12
  13 import java.io.*;
  14
  15 /**
  16  * @author Tom Gaskins
  17  * @version $Id: BasicDataFileCache.java 3335 2007-10-19 04:05:22Z tgaskins $
  18  */
  19 public class BasicDataFileCache extends AbstractFileCache
  20 {
  21     public BasicDataFileCache()
  22     {
  23         String cachePathName = Configuration.getStringValue(AVKey.DATA_FILE_CACHE_CONFIGURATION_FILE_NAME);
  24         if (cachePathName == null)
  25         {
  26             String message = Logging.getMessage("FileCache.NoConfiguration");
  27             Logging.logger().severe(message);
  28             throw new IllegalStateException(message);
  29         }
  30
  31         java.io.InputStream is = null;
  32         File file = new File(cachePathName);
  33         if (file.exists())
  34         {
  35             try
  36             {
  37                 is = new FileInputStream(file);
  38             }
  39             catch (FileNotFoundException e)
  40             {
  41                 String message = Logging.getMessage("FileCache.LocalConfigFileNotFound", cachePathName);
  42                 Logging.logger().finest(message);
  43             }
  44         }
  45
  46         if (is == null)
  47         {
  48             is = this.getClass().getClassLoader().getResourceAsStream(cachePathName);
  49         }
  50
  51         if (is == null)
  52         {
  53             String message = Logging.getMessage("FileCache.ConfigurationNotFound", cachePathName);
  54             Logging.logger().severe(message);
  55             throw new IllegalStateException(message);
  56         }
  57
  58         this.initialize(is);
  59     }
  60 }