[jbosscache-commits] JBoss Cache SVN: r7015 - core/trunk/src/main/java/org/jboss/cache.

[jbosscache-commits at lists.jboss.org]

Author: manik.surtani at jboss.com
Date: 2008-10-26 17:31:15 -0400 (Sun, 26 Oct 2008)
New Revision: 7015

Modified:
   core/trunk/src/main/java/org/jboss/cache/RegionImpl.java
Log:
Backward compatibility hack for a deprecated method that *really* should not be used!

Modified: core/trunk/src/main/java/org/jboss/cache/RegionImpl.java
===================================================================
--- core/trunk/src/main/java/org/jboss/cache/RegionImpl.java	2008-10-25 23:50:03 UTC (rev 7014)
+++ core/trunk/src/main/java/org/jboss/cache/RegionImpl.java	2008-10-26 21:31:15 UTC (rev 7015)
@@ -28,13 +28,11 @@
 import org.jboss.cache.config.EvictionAlgorithmConfig;
 import org.jboss.cache.config.EvictionPolicyConfig;
 import org.jboss.cache.config.EvictionRegionConfig;
-import org.jboss.cache.eviction.EvictedEventNode;
-import org.jboss.cache.eviction.EvictionActionPolicy;
-import org.jboss.cache.eviction.EvictionAlgorithm;
-import org.jboss.cache.eviction.EvictionEvent;
-import org.jboss.cache.eviction.EvictionPolicy;
+import org.jboss.cache.eviction.*;
 import org.jboss.cache.util.Util;
 
+import java.util.HashMap;
+import java.util.Map;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.TimeUnit;
@@ -321,10 +319,68 @@
    @SuppressWarnings("deprecation")
    public void setEvictionPolicy(EvictionPolicyConfig evictionPolicyConfig)
    {
-      //TODO: Autogenerated.  Implement me properly
+      try
+      {
+         // need to create an EvictionRegionConfig from this.
+         EvictionRegionConfig erc = new EvictionRegionConfig(getFqn());
+         String epClassName = evictionPolicyConfig.getEvictionPolicyClass();
+         EvictionAlgorithmConfig eac = getEvictionAlgorithmConfig(epClassName);
+         erc.setEvictionAlgorithmConfig(eac);
+         if (!erc.isDefaultRegion())
+         {
+            erc.setDefaults(regionManager.getConfiguration().getEvictionConfig().getDefaultEvictionRegionConfig());
+         }
+         setEvictionRegionConfig(erc);
+      }
+      catch (Exception e)
+      {
+         throw new CacheException(e);
+      }
    }
 
+   /**
+    * This is to provide backward compatibility and is not guaranteed to work for every type of eviction policy out
+    * there, particularly custom ones.
+    *
+    * @param evictionPolicyClass
+    * @return An eviction algorithm config.
+    */
    @Deprecated
+   private EvictionAlgorithmConfig getEvictionAlgorithmConfig(String evictionPolicyClass) throws Exception
+   {
+      Map<String, Class<? extends EvictionAlgorithmConfig>> legacyConfigMap = new HashMap<String, Class<? extends EvictionAlgorithmConfig>>();
+      legacyConfigMap.put(FIFOPolicy.class.getName(), FIFOAlgorithmConfig.class);
+      legacyConfigMap.put(LRUPolicy.class.getName(), LRUAlgorithmConfig.class);
+      legacyConfigMap.put(LFUPolicy.class.getName(), LFUAlgorithmConfig.class);
+      legacyConfigMap.put(MRUPolicy.class.getName(), MRUAlgorithmConfig.class);
+      legacyConfigMap.put(ExpirationPolicy.class.getName(), ExpirationAlgorithmConfig.class);
+      legacyConfigMap.put(ElementSizePolicy.class.getName(), ElementSizeAlgorithmConfig.class);
+      legacyConfigMap.put(NullEvictionPolicy.class.getName(), NullEvictionAlgorithmConfig.class);
+
+      Class<? extends EvictionAlgorithmConfig> c = legacyConfigMap.get(evictionPolicyClass);
+      if (c != null)
+      {
+         // this is one of our "shipped" policies.  Easy mapping!
+         return Util.getInstance(c);
+      }
+      else
+      {
+         // tougher.  This is a custom policy.
+         // lets default to LRUPolicy first...
+         final EvictionPolicy ep = (EvictionPolicy) Util.getInstance(evictionPolicyClass);
+         ep.getEvictionAlgorithm();
+         return new LRUAlgorithmConfig()
+         {
+            @Override
+            public String getEvictionAlgorithmClassName()
+            {
+               return ep.getEvictionAlgorithm().getClass().getName();
+            }
+         };
+      }
+   }
+
+   @Deprecated
    @Compat
    @SuppressWarnings("deprecation")
    public EvictionPolicyConfig getEvictionPolicyConfig()