src/org/vamsas/client/simpleclient/LockFactory.java

   1 package org.vamsas.client.simpleclient;
   2
   3 import org.apache.commons.logging.Log;
   4 import org.apache.commons.logging.LogFactory;
   5
   6 public class LockFactory {
   7   protected static Log log = LogFactory.getLog(LockFactory.class);
   8   public static int locktype=0; // use file lock by default
   9   public static String[] locktypes = {"file","native"};
  10   {
  11     String lockt = System.getProperty("vamsas.locktype");
  12     if (lockt!=null) {
  13       int i,j;
  14       for (i=0, j=locktypes.length; i<j && locktypes[i].equalsIgnoreCase(lockt); i++)
  15         ;
  16       if (i>=j) {
  17         String lt = "'"+locktypes[0]+"'";
  18         for (i=1; i<j; i++)
  19           lt += ",'"+locktypes[i]+"'";
  20         log.warn("System property vamsas.locktype takes one of "+lt);
  21         log.warn("Defaulting to Locktype of "+locktypes[locktype]);
  22       }
  23     }
  24   }
  25
  26   public static Lock getLock(java.io.File target) {
  27     if (locktype==0)
  28       return new FileLock(target);
  29     if (locktype==1)
  30       return new NativeLock(target);
  31     log.fatal("Implementation Error! No valid Locktype value");
  32     return null;
  33   }
  34 }