ACE-3121: Workflow Admin Console: Cannot change priority for activiti

- Handled priority property for Task
   - Determine if DelegateTask also needs similar handling

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@88373 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/workflow/activiti/properties/ActivitiPriorityPropertyHandler.java

@@ -40,9 +40,32 @@ public class ActivitiPriorityPropertyHandler extends ActivitiTaskPropertyHandler
     
     @Override
     protected Object handleTaskProperty(Task task, TypeDefinition type, QName key, Serializable value)
+    {
+        int priority = -1;
+        // ACE-3121: According to bpmModel.xml, priority should be an int with allowed values {1,2,3}
+        // It could be a String that converts to an int, like when coming from WorkflowInterpreter.java
+        if (value instanceof String)
+        {
+            try
+            {
+                priority = Integer.parseInt((String) value);
+            }
+            catch (NumberFormatException e)
+            {
+                return DO_NOT_ADD;
+            }
+        }
+        else
         {
             checkType(key, value, Integer.class);
-        task.setPriority((Integer) value);
+            priority = (Integer) value;
+        }
+
+        if (1 <= priority && priority <= 3)
+        {
+            task.setPriority(priority);
+        }
+
         return DO_NOT_ADD;
     }