Added method to delete multiple child contexts for unique property contexts

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@16441 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/domain/propval/PropertyValueDAO.java

@@ -279,6 +279,13 @@ public interface PropertyValueDAO
      * @see #createPropertyUniqueContext(Serializable, Serializable, Serializable)
      */
     void deletePropertyUniqueContext(Long id);
+    /**
+     * Delete sets of unique contexts based on one, two or three context values.
+     * 
+     * @param values            a combination of one to three values in order
+     * @return                  Returns the number of unique contexts deleted
+     */
+    int deletePropertyUniqueContext(Serializable ... values);
 
     //================================
     // Utility methods