[Jboss-svn-commits] JBL Code SVN: r3744 - labs/jbossrules/trunk/drools-core/src/main/java/org/drools/conflict

[<jbo...@li...>]

Author: tirelli
Date: 2006-04-17 14:04:18 -0400 (Mon, 17 Apr 2006)
New Revision: 3744

Added:
   labs/jbossrules/trunk/drools-core/src/main/java/org/drools/conflict/TotalRecencyConflictResolver.java
Modified:
   labs/jbossrules/trunk/drools-core/src/main/java/org/drools/conflict/DefaultConflictResolver.java
Log:
Adding TotalRecencyConflictResolver

Modified: labs/jbossrules/trunk/drools-core/src/main/java/org/drools/conflict/DefaultConflictResolver.java
===================================================================
--- labs/jbossrules/trunk/drools-core/src/main/java/org/drools/conflict/DefaultConflictResolver.java	2006-04-17 17:09:58 UTC (rev 3743)
+++ labs/jbossrules/trunk/drools-core/src/main/java/org/drools/conflict/DefaultConflictResolver.java	2006-04-17 18:04:18 UTC (rev 3744)
@@ -64,7 +64,7 @@
     // Class members
     // ----------------------------------------------------------------------
 
-     private static final ConflictResolver[] CONFLICT_RESOLVERS = new ConflictResolver[]{SalienceConflictResolver.getInstance(), LifoConflictResolver.getInstance(), RecencyConflictResolver.getInstance(), LoadOrderConflictResolver.getInstance() };
+     private static final ConflictResolver[] CONFLICT_RESOLVERS = new ConflictResolver[]{SalienceConflictResolver.getInstance(), LifoConflictResolver.getInstance(), TotalRecencyConflictResolver.getInstance(), LoadOrderConflictResolver.getInstance() };
 
     /** Singleton instance. */
     private static final DefaultConflictResolver INSTANCE           = new DefaultConflictResolver();

Added: labs/jbossrules/trunk/drools-core/src/main/java/org/drools/conflict/TotalRecencyConflictResolver.java
===================================================================
--- labs/jbossrules/trunk/drools-core/src/main/java/org/drools/conflict/TotalRecencyConflictResolver.java	2006-04-17 17:09:58 UTC (rev 3743)
+++ labs/jbossrules/trunk/drools-core/src/main/java/org/drools/conflict/TotalRecencyConflictResolver.java	2006-04-17 18:04:18 UTC (rev 3744)
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2005 JBoss Inc
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.drools.conflict;
+
+import org.drools.WorkingMemory;
+import org.drools.reteoo.ReteTuple;
+import org.drools.spi.Activation;
+import org.drools.spi.ConflictResolver;
+
+/**
+ * A conflict resolver that compares the total recency of a tuple when 
+ * determining firing order.
+ * 
+ * @author <a href="mailto:ti...@po...">Edson Tirelli</a>
+ * 
+ * @version $Id$
+ */
+public class TotalRecencyConflictResolver extends AbstractConflictResolver {
+    // ----------------------------------------------------------------------
+    // Class members
+    // ----------------------------------------------------------------------
+
+    /** Singleton instance. */
+    private static final TotalRecencyConflictResolver INSTANCE = new TotalRecencyConflictResolver();
+
+    // ----------------------------------------------------------------------
+    // Class methods
+    // ----------------------------------------------------------------------
+
+    /**
+     * Retrieve the singleton instance.
+     * 
+     * @return The singleton instance.
+     */
+    public static ConflictResolver getInstance() {
+        return TotalRecencyConflictResolver.INSTANCE;
+    }
+
+    // ----------------------------------------------------------------------
+    // Constructors
+    // ----------------------------------------------------------------------
+
+    /**
+     * Construct.
+     */
+    public TotalRecencyConflictResolver() {
+        // intentionally left blank
+    }
+
+    // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+    /**
+     * @see ConflictResolver
+     */
+    public int compare(Activation lhs,
+                       Activation rhs) {
+        long leftRecency = 0;
+        long rightRecency = 0;
+        if(lhs.getTuple() instanceof ReteTuple) {
+            leftRecency = ((ReteTuple) lhs.getTuple()).getRecency();
+        }
+        if(rhs.getTuple() instanceof ReteTuple) {
+            rightRecency = ((ReteTuple) rhs.getTuple()).getRecency();
+        }
+        return (rightRecency > leftRecency) ? 1  :
+               (rightRecency < leftRecency) ? -1 :
+               0;
+    }
+
+}


Property changes on: labs/jbossrules/trunk/drools-core/src/main/java/org/drools/conflict/TotalRecencyConflictResolver.java
___________________________________________________________________
Name: svn:executable
   + *
Name: svn:keywords
   + id author date revision
Name: svn:eol-style
   + native