Index: drools-compiler/src/test/java/org/drools/ExpensiveCheese.java
===================================================================
--- drools-compiler/src/test/java/org/drools/ExpensiveCheese.java	(revision 16463)
+++ drools-compiler/src/test/java/org/drools/ExpensiveCheese.java	(working copy)
@@ -19,66 +19,39 @@
  * limitations under the License.
  */
 
-public class Cheese
-    implements
-    Serializable {
+public class ExpensiveCheese
+    extends
+    Cheese {
 
-    public static final String STILTON = "stilton";
+    private long              longPrice;
 
-    /**
-     *
-     */
-    private static final long serialVersionUID = 400L;
-    private String            type;
-    private int               price;
-    private int               oldPrice;
-    private Date              usedBy;
+    public ExpensiveCheese() {
 
-    public Cheese() {
-
     }
 
-    public Cheese(final String type,
-                  final int price) {
-        super();
-        this.type = type;
-        this.price = price;
+    public ExpensiveCheese(final String type,
+                  final long longPrice) {
+        super(type, (int) longPrice);
+        this.longPrice = longPrice;
     }
 
-    public Cheese(final String type,
-                  final int price,
-                  final int oldPrice ) {
-        super();
-        this.type = type;
-        this.price = price;
-        this.oldPrice = oldPrice;
+    public long getLongPrice() {
+        return longPrice;
     }
 
-    public int getPrice() {
-        return this.price;
+    public void setLongPrice(long longPrice) {
+        this.longPrice = longPrice;
     }
 
-    public String getType() {
-        return this.type;
-    }
-
-    public void setType(final String type) {
-        this.type = type;
-    }
-
-    public void setPrice(final int price) {
-        this.price = price;
-    }
-
     public String toString() {
-        return "Cheese( type='" + this.type + "', price=" + this.price + " )";
+        return super.toString() + "&( longPrice=" + this.longPrice + " )";
     }
 
     public int hashCode() {
         final int PRIME = 31;
         int result = 1;
-        result = PRIME * result + price;
-        result = PRIME * result + ((type == null) ? 0 : type.hashCode());
+        result = PRIME * result + super.hashCode();
+        result = PRIME * result + ((int) longPrice);
         return result;
     }
 
@@ -86,30 +59,10 @@
         if ( this == obj ) return true;
         if ( obj == null ) return false;
         if ( getClass() != obj.getClass() ) return false;
-        final Cheese other = (Cheese) obj;
-        if ( price != other.price ) return false;
-        if ( type == null ) {
-            if ( other.type != null ) return false;
-        } else if ( !type.equals( other.type ) ) return false;
+        final ExpensiveCheese other = (ExpensiveCheese) obj;
+        if (!super.equals(obj)) return false;
+        if ( longPrice != other.longPrice ) return false;
         return true;
     }
 
-    public int getOldPrice() {
-        return oldPrice;
-    }
-
-    public void setOldPrice(int oldPrice) {
-        this.oldPrice = oldPrice;
-    }
-
-    public Date getUsedBy() {
-        return usedBy;
-    }
-
-    public void setUsedBy(Date usedBy) {
-        this.usedBy = usedBy;
-    }
-
-
-
 }
\ No newline at end of file
Index: drools-compiler/src/test/java/org/drools/integrationtests/AccumulateTest.java
===================================================================
--- drools-compiler/src/test/java/org/drools/integrationtests/AccumulateTest.java	(revision 16463)
+++ drools-compiler/src/test/java/org/drools/integrationtests/AccumulateTest.java	(working copy)
@@ -8,9 +8,9 @@
 
 import junit.framework.Assert;
 import junit.framework.TestCase;
-
 import org.drools.Cheese;
 import org.drools.Cheesery;
+import org.drools.ExpensiveCheese;
 import org.drools.FactHandle;
 import org.drools.OuterClass;
 import org.drools.Person;
@@ -628,6 +628,10 @@
         execTestAccumulateSum( "test_AccumulateSum.drl" );
     }
 
+    public void testAccumulateSumLongJava() throws Exception {
+        execTestAccumulateSumLong( "test_AccumulateSumLong.drl" );
+    }
+
     public void testAccumulateSumMVEL() throws Exception {
         execTestAccumulateSum( "test_AccumulateSumMVEL.drl" );
     }
@@ -747,6 +751,38 @@
 
     }
 
+    public void execTestAccumulateSumLong(String fileName) throws Exception {
+        // read in the source
+        final Reader reader = new InputStreamReader( getClass().getResourceAsStream( fileName ) );
+        final RuleBase ruleBase = loadRuleBase( reader );
+
+        final WorkingMemory wm = ruleBase.newStatefulSession();
+        final List results = new ArrayList();
+
+        wm.setGlobal( "results",
+                      results );
+
+        long maxLongMinus3 = Long.MAX_VALUE - 4L;
+
+        final ExpensiveCheese[] cheese = new ExpensiveCheese[]{
+                new ExpensiveCheese( "stilton", 3L ),
+                new ExpensiveCheese( "stilton", maxLongMinus3 )
+        };
+
+        final FactHandle[] cheeseHandles = new FactHandle[cheese.length];
+        for ( int i = 0; i < cheese.length; i++ ) {
+            cheeseHandles[i] = wm.insert( cheese[i] );
+        }
+
+        // ---------------- 1st scenario
+        wm.fireAllRules();
+        Assert.assertEquals( 1,
+                             results.size() );
+        Assert.assertEquals( Long.MAX_VALUE - 1L,
+                             ((Number) results.get( results.size() - 1 )).longValue() );
+
+    }
+
     public void execTestAccumulateCount(String fileName) throws Exception {
         // read in the source
         final Reader reader = new InputStreamReader( getClass().getResourceAsStream( fileName ) );
Index: drools-compiler/src/test/resources/org/drools/integrationtests/test_AccumulateSumLong.drl
===================================================================
--- drools-compiler/src/test/resources/org/drools/integrationtests/test_AccumulateSumLong.drl	(revision 16463)
+++ drools-compiler/src/test/resources/org/drools/integrationtests/test_AccumulateSumLong.drl	(working copy)
@@ -1,17 +1,16 @@
 package org.drools.test;
 
-import org.drools.Cheese;
+import org.drools.ExpensiveCheese;
 import org.drools.Person;
 
 global java.util.List results;
 
-rule "Test sum" salience 80
+rule "Test sum with long" salience 80
     dialect "java"
     when
-        $person : Person( $likes : likes )
-    	$sum    : Number( doubleValue >= 10 ) 
-    	                       from accumulate( Cheese( type == $likes, $price : price  ),
-                                                sum( $price ) );
+    	$sum : Number()
+                from accumulate( ExpensiveCheese( $longPrice : longPrice  ),
+                                 sum( $longPrice ) );
     then
         results.add( $sum );
 end