ValidateCompareToTag

[MT3 MTCube]

We have used the <s:validateCompareTo> with the "comparator" attribute, we have inserted a value binding (like comparator=#{bean.myComparator}) in the attribute but we have received this exception:

java.lang.ClassCastException: comparator must be type interface java.util.Comparator but is type class java.lang.String
    at org.apache.myfaces.custom.comparetovalidator.CompareToValidator.createComparator(CompareToValidator.java:347)
    at org.apache.myfaces.custom.comparetovalidator.CompareToValidator.validate(CompareToValidator.java:292)

even if we get a java.util.Comparator from the bean.
We have solved the problem with this patch:

Index: C:/current/tomahawk/sandbox/core/src/main/java/org/apache/myfaces/custom/comparetovalidator/ValidateCompareToTag.java
===================================================================
--- C:/current/tomahawk/sandbox/core/src/main/java/org/apache/myfaces/custom/comparetovalidator/ValidateCompareToTag.java    (revision 425405)
+++ C:/current/tomahawk/sandbox/core/src/main/java/org/apache/myfaces/custom/comparetovalidator/ValidateCompareToTag.java    (working copy)
@@ -71,7 +71,7 @@
         if (_comparator != null)
         {
             ValueBinding vb = facesContext.getApplication().createValueBinding(_comparator);
-            validator.setComparator(vb.getValue(facesContext).toString());
+            validator.setComparator(vb.getValue(facesContext));
         }
        
         if (_foreignComponentName != null)


with this correction the "comparator" property receives the object instead at first it receives a String (the cause of the later exception).
Is it correct or we have used the comparator attribute in a wrong way?

Thanks to all,
Mt3