No, that is not the case.
I tried this:
jel.assertString("(qwe)");
jel.retractString("(qwe)");
jel.assertString("(qwe)");
and it still doesn't work. I only get the retract event.
There must be something else going on in the bsaved file. Any clue?
Henrique
Ernest Friedman-Hill wrote:
> One explanation consistent with your observations is that the bsaved
> file already contains (qwe) and (asd) facts. If you attempt to assert
> a fact that already exists in working memory, the assert method
> returns FALSE and no event is sent.
>
>
> On Jul 5, 2007, at 5:47 AM, Henrique Lopes Cardoso wrote:
>
>> I just extended Rete to make the example simpler. I also tried it with
>> an independent JessListener implementing class, but the problem is
>> the same.
>>
>> I tried to do Rete.addJessListener() after bload, just as you suggested,
>> but the problem remains.
>>
>> So, I ask again: what could be wrong in my bsaved file that prevents
>> some JessEvents from being notified?
>>
>> Henrique
>>
>>
>> Jonathan Sewall wrote:
>>> I didn't extend Rete just to create a JessListener, but I did find
>>> that I needed to reregister my listeners after bload.
>>> Henrique Lopes Cardoso wrote:
>>>> I am stumbling for some time now with the use of a JessListener. After
>>>> many tries, I figured out that the listener does not work properly
>>>> when
>>>> I bload() certain files.
>>>>
>>>> Since the Rete class implements JessListener, for ease of testing I
>>>> extended it and got to the class below.
>>>> From my experiences, if the bsave file is empty, it works fine. If
>>>> I use
>>>> another bsaved file that I have, I get problems. Only the retracted
>>>> facts are being notified.
>>>>
>>>> Is this a bug? What should I look for in my bsaved file?
>>>>
>>>> Thanks.
>>>>
>>>> Henrique
>>>>
>>>> //---------------------------------------------
>>>> public class JEL extends Rete {
>>>> public JEL() {
>>>> super();
>>>> // set event mask
>>>> setEventMask(JessEvent.FACT);
>>>> // load file
>>>> try {
>>>> FileInputStream fis = new
>>>> FileInputStream("somefile.bsave");
>>>> bload(fis);
>>>> fis.close();
>>>> } catch (ClassNotFoundException cnfe) {
>>>> cnfe.printStackTrace();
>>>> } catch (IOException ioe) {
>>>> ioe.printStackTrace();
>>>> }
>>>> }
>>>> public void eventHappened(JessEvent jev) {
>>>> System.out.println("EVENT:" +
>>>> JessEvent.getEventName(jev.getType()));
>>>> switch(jev.getType()) {
>>>> case JessEvent.FACT | JessEvent.REMOVED: // retraction
>>>> Fact whatWasRetracted = (Fact) jev.getObject();
>>>> < System.out.println("- - -" + whatWasRetracted);
>>>> break;
>>>> case JessEvent.FACT: // assertion
>>>> Fact whatWasAsserted = (Fact) jev.getObject();
>>>> System.out.println("+ + +" + whatWasAsserted);
>>>> break;
>>>> }
>>>> }
>>>> public static void main(String args[]) {
>>>> JEL jel = new JEL();
>>>> try {
>>>> jel.assertString("(qwe)");
>>>> jel.retractString("(qwe)");
>>>> jel.assertString("(asd)");
>>>> } catch(JessException je) {
>>>> je.printStackTrace();
>>>> }
>>>> }
>>>> }
>>>> //----------------------------------------------
>>>>
>>>>
>>>>
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>>
>> --
>> ----- - - - - - - - - - - - -
>> Henrique Lopes Cardoso
>> DEEC/FEUP
>> Rua Dr. Roberto Frias | 4200-465 Porto
>> PORTUGAL
>> (+351)225081400 ext.1315
>> [EMAIL PROTECTED] | www.fe.up.pt/~hlc
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>
> ---------------------------------------------------------
> Ernest Friedman-Hill
> Advanced Software Research Phone: (925) 294-2154
> Sandia National Labs FAX: (925) 294-2234
> PO Box 969, MS 9012 [EMAIL PROTECTED]
> Livermore, CA 94550 http://www.jessrules.com
>
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--
----- - - - - - - - - - - - -
Henrique Lopes Cardoso
DEEC/FEUP
Rua Dr. Roberto Frias | 4200-465 Porto
PORTUGAL
(+351)225081400 ext.1315
[EMAIL PROTECTED] | www.fe.up.pt/~hlc
----- - - - - - - - - - - - -
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