The information about definstance can be found in "2.7.4. Definstance facts" in the Jess manual chapter "The Jess Language". Here is the page that has that section http://herzberg.ca.sandia.gov/jess/docs/61/language.html.
--jason
On Mar 29, 2004, at 3:57 PM, Michael Knapik wrote:
Folks,
�
I successfully compiled the example Java DynamicDimmerSwitch code on pp 92-93 of Jess In Action.
�
The next step (and the last item in the chapter)�was to hook up Jess to the new switch��JavaBean (I previously successfully did so with the DimmerSwitch example)
�
Here is the outcome (yes the import is in the java code, yes I have the latest JDK etc.)
�
Jess> (defclass dimmer DimmerSwitchDynamic)
�
DimmerSwitchDynamic
Jess> (bind ?ds (new DimmerSwitchDynamic))
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<External-Address:DimmerSwitchDynamic>
Jess> (definstance dimmer ?ds)
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Jess reported an error in routine DefinstanceList.definstance
�while executing (definstance dimmer ?ds).
� Message: Obj doesn't accept PropertyChangeListeners.
� Program text: ( definstance dimmer ?ds )� at line 213.
Nested exception is:
DimmerSwitchDynamic.addPropertyChangeListener(java.beans.PropertyChange Listener)
java.lang.NoSuchMethodException: DimmerSwitchDynamic.addPropertyChangeListener(java.beans.PropertyChange Listener)
�at java.lang.Class.getMethod(Unknown Source)
�at jess.d7.a(Unknown Source)
�at jess.Rete.definstance(Unknown Source)
�at jess.a3.call(Unknown Source)
�at jess.ep.a(Unknown Source)
�at jess.Funcall.execute(Unknown Source)
�at jess.Jesp.a(Unknown Source)
�at jess.Jesp.for(Unknown Source)
�at jess.Jesp.parse(Unknown Source)
�at jess.Jesp.parse(Unknown Source)
�at jess.Main.execute(Unknown Source)
�at JessWin.jessExecute(JessWin.java:1115)
�at JessWin$63.run(JessWin.java:1062)
�at java.lang.Thread.run(Unknown Source)
Jess>
�
Thoughts?
�
(PS; for one person on this list�with initials JM�- no item in the rest of the book addresses THIS question)
�
Mke
