Re: [rules-users] KnowledgeAgent Changeset problems
Thank you every body for your answer, unfortunately I was't able to reply to
you until now because other stuff overwhelmed me literally at work.
Anyway I was going ahead using KnowledgeAgent, following your comments and
other suggestion. Now I am able to load rules applying change set with
KnowledgeAgent (thank you!!!), but honestly this is a poor success because,
even if when I change the rule KnowledgeAgent says "incremental build of
KnowledgeBase finished and in use" nothing changes.
It seems that changes at rules have no effect and it is pretty weird. I made
a maven project with eclipse to explain you better my problem. Is a simple
main. I am working for a better junit test. Anyway if you change the rule in
the folder knowledge you can test the problem by yourself.
Briefly I will explain the project:
Here the code:
_l.warn("START");
String xml = "";
xml += "<change-set
xmlns='http://drools.org/drools-5.0/change-set'";
xml += "
xmlns:xs='http://www.w3.org/2001/XMLSchema-instance'";
xml += "
xs:schemaLocation='http://drools.org/drools-5.0/change-set
drools-change-set-5.0.xsd' >";
xml += " <add> ";
xml += " <resource
source='Z:/EXP/drools-test/knowledge/test.drl'
type='DRL' />";
xml += " </add> ";
xml += "</change-set>";
FileManager fileManager = new FileManager();
File fxml = fileManager.newFile("changeset.xml");
Writer output = new BufferedWriter(new FileWriter(fxml));
output.write(xml);
output.close();
// build a KnowledgeAgent
ResourceFactory.getResourceChangeNotifierService()
.start();
ResourceFactory.getResourceChangeScannerService()
.start();
final ResourceChangeScannerConfiguration sconf =
ResourceFactory.getResourceChangeScannerService()
.newResourceChangeScannerConfiguration();
sconf.setProperty("drools.resource.scanner.interval", "2");
ResourceFactory.getResourceChangeScannerService()
.configure(sconf);
final KnowledgeAgentConfiguration aconf =
KnowledgeAgentFactory.newKnowledgeAgentConfiguration();
aconf.setProperty("drools.agent.scanDirectories", "true");
aconf.setProperty("drools.agent.scanResources", "true");
/*
* important newInstance has to be false in order to update the
* knowledge base and not rebuild a new one
*/
aconf.setProperty("drools.agent.newInstance", "false");
final KnowledgeAgent agent =
KnowledgeAgentFactory.newKnowledgeAgent("pch.sel.knowledge.agent", aconf);
// if (_l.isDebugEnabled()) {
/* we need some log every time */
agent.setSystemEventListener(new PrintStreamSystemEventListener());
agent.applyChangeSet(ResourceFactory.newClassPathResource("pch.sel.kwset.xml"));
// fire rules
StatefulKnowledgeSession session =
agent.getKnowledgeBase().newStatefulKnowledgeSession();
session.fireAllRules();
_l.warn("END");
and here the rule
package it.ipiu.drools.KnowledgeAgent.test
rule "test rule" timer(int: 0s 2s)
when
eval(true);
then
System.out.println("ciao");
end
If I try to change timer from 2s to 2m nothing changes even if
KnowledgeAgent seems to reload all.
*Please help!!! I googled the problem everywhere without solution!!!*
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