lib/openwfe/workitem.rb in openwferu-0.9.7 vs lib/openwfe/workitem.rb in openwferu-0.9.8

@@ -48,10 +48,16 @@
 
 
 module OpenWFE
 
     #
+    # The convention for the result of some expressions is to store
+    # their result in a workitem field named "__result__".
+    #
+    FIELD_RESULT = "__result__"
+
+    #
     # WORKITEMS
     #
 
     #
     # The base class for all the workitems.
@@ -277,9 +283,41 @@
             wi = super
             wi.dispatch_time = h[:dispatch_time]
             wi.history = h[:history]
             wi.filter = h[:filter]
             wi
+        end
+
+        #
+        # Sets the '__result__' field of this workitem
+        #
+        def set_result (result)
+            @attributes[FIELD_RESULT] = result
+        end
+
+        #
+        # Makes sure the '__result__' field of this workitem is empty.
+        #
+        def unset_result
+            @attributes.delete FIELD_RESULT
+        end
+
+        #
+        # Just a shortcut (for consistency) of
+        #
+        #     workitem.attributes["__result__"]
+        #
+        def get_result
+            @attributes[FIELD_RESULT]
+        end
+
+        #
+        # Returns true or false.
+        #
+        def get_boolean_result
+            r = get_result
+            return false unless r
+            return (r == true or r == "true")
         end
     end
 
     #
     # When it needs to cancel a branch of a process instance, the engine