KnowledgeBaseEvent on KnowledgeAgent
by Mohamed BEN AYED
Hi,
I have 2 questions:
1) I used KnowledgeAgent as following
KnowledgeBase kbase=KnowledgeBaseFactory.newKnowledgeBase();
KnowledgeAgent agent =
KnowledgeAgentFactory.newKnowledgeAgent("myagent",kbase,aconf);
when I do, StatefulKnowledgeSession session
=kbase.newStatefulKnowledgeSession();
session.firAllRules();
nothing is happening! ==> so I should add kbase=agent.getKnowledgeBAse();
what's the meaning of "kbase" in KnowledgeAgent parameters??
2) I am trying to use KnowledgeBaseEventListener. I add this line,
kbase.addKnwledgeBaseEventListener(new .....) but I didn't have any result
why?
Regards
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16 years, 1 month
StatelessKnowledgeSessionImpl.execute does not call dispose() method
by Σάββας Τριανταφύλλου
Hi,
I have noticed that StatelessKnowledgeSessionImpl.execute (5.1.0.M1) methods do not call dispose()
method in contrary to the documentation (http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/drools-expert/ht...)
3.3.7. StatelessKnowledgeSession
The StatelessKnowledgeSession wraps the StatefulKnowledgeSession, instead of extending it. Its main focus is on decision service type scenarios. It avoids the need to call dispose(). Stateless sessions do not support iterative insertions and the method call fireAllRules() from Java code; the act of calling execute() is a single-shot method that will internally instantiate a StatefulKnowledgeSession, add all the user data and execute user commands, call fireAllRules(), and then call dispose().
Is this a bug or has something changed between version 5.0.1 and 5.1.0 ?
BR,
Savvas Triantafyllou
16 years, 1 month
Re: [rules-dev] Append the Logs For the events Fired
by mamadou.ensi
public class LogDrools(){
public Logger mylogger = Logger.getLogger("file.log");
public void logInfo(String message, Object[] object){
String m ="";
m.append(message);
for(int i=0;i<object.size();i++){
m.append(":--:",objeci[i].toString());
}
mylogger.info(m);
}
/*you have mylogger.error, ...*/
}
public class AgendaListenerImpl implements AgendaEventListener{
LogDrools log =new LogDrools();
@Override
public void afterActivationFired(AfterActivationFiredEvent arg0) {
log.logInfo("After Activation fired event", new
Object[]{arg0.getActivation().getRule().getPackageName();});
}
/*same thing for other methods
*/
}
I am ready to give you more details if you need
Regards
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16 years, 1 month
Re: [rules-dev] Append the Logs For the events Fired
by mamadou.ensi
I didn't work with WorkingMemoryFileLogger because it's incomplete class
I imlement all interfaces (AgendaEventListener,
WorkingMemoryEventListener,...) and I used log4j to log all events (it's
more clear)
and everytime I have a session to create I add all listener:
exemple
public class AgendaEventListenerImpl implements AgendaEventListener{
/*I initialize a log4j and implement all methods*/
}
in main class:
session.addEventListener(new AgendaEventListenerImpl());
session.fireAllRules();
keep me in informed
Regards
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16 years, 1 month
Guvnor on Weblogic 11g AS
by mamadou.ensi
Hi,
Today, I will explain how to get Guvnor worked on Weblogic application
server
Lets start
1/ Install Weblogic AS
2/ create a new domain (quick start)
http://n3.nabble.com/file/n831111/image1.png
3/ click "Getting started with Weblogic ..."
http://n3.nabble.com/file/n831111/image2.png
4/ Click next -> next -> and give the domain name as guvnor
http://n3.nabble.com/file/n831111/image3.png
5/ click next -> next-> and finally create
6/go to start menu -> Oracle Weblogic -> User Projects -> guvnor -> start
admin server for weblogic server domain
7/ open http://localhost:7001/console
http://n3.nabble.com/file/n831111/image4.png
8/ give the password that you had specified on the domain creation
9/ click "Deployments" (on the left)
10/ click "Install"
http://n3.nabble.com/file/n831111/image6.png
11/ give the path of drools-guvnor directory (extract drools-guvnor on a
directory)
12/ click next->next->...->finish
13/ now choose save
14/ click "Deployments" yand you will see drools-guvnor
http://n3.nabble.com/file/n831111/image7.png
15/ click "Start" -> "Servicing all requests"
but you will see some problem and the service couldn't be started :(
don't worry, we will fixe this in a moment
16/ Stop the server
17 go to %WEBLOGIC_HOME%\user_projects\domains\guvnor\lib and add the
following JARs
- commons-beanutils-1.7.0.jar
- commons-codec-1.3.jar
- commons-collections-3.2.jar
- commons-digester-1.8.jar
- commons-discovery-0.4.jar
- commons-logging-1.1.1.jar
- myfaces-api-1.2.8.jar
- myfaces-impl-1.2.8.jar
18/ open drools-guvnor\WEB-INF/lib and add the followin JARs
- asm.jar
- cglib.jar
- commons-logging-1.1.1.jar
- hibernate3.jar
- hibernate-annotations.jar
- hibernate-commons-annotations-3.1.0.GA.jar
- hibernate-entitymanager.jar
- log4j.jar
19/ open the file drools-guvnor\WEB-INF \components.xml and replace
<core:init transaction-management-enabled="false"/>
<transaction:no-transaction/>
with : <core:init debug="true" jndi-pattern="\#{ejbName}/local" />
20/ In <component name="repositoryConfiguration"> add:
<property name="homeDirectory">E:/GuvnorRepo/</property>
don't forget to create a "GuvnorRepo" directory on E:\
21/ start the server and enjoy with Guvnor on http//localhost
:7001/drools-guvnor/
I hope I was clear
for any information please contact me
Regards
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16 years, 1 month
Guvnor JAAS authentification with Tomcat
by mamadou.ensi
Hi,
I will explain how to configure JAAS authentification for Guvnor using
Tomcat
Lets start,
1/ We should have a JAAS LoginModule implemented that connect to a database
and test if the user exists in the database.
for example:
public class JaasGuvnor implements LoginModule {
public String userName;
public String password;
public boolean login(){
return true if user exist and false if not
}
/*other methods to implement*/
}
2/ open %TOMCAT_HOME%/conf/context.xml and you should configure your
database, here I use Oracle
<Resource name="jdbc/URDroolsDS"
auth="Container"
type="javax.sql.DataSource"
driverClassName="oracle.jdbc.OracleDriver"
url="jdbc:oracle:thin:@mamadou:1522:guvnor"
username="drools"
password="drools"
maxActive="20"
maxIdle="10"
maxWait="-1"/>
<Realm className="org.apache.catalina.realm.JAASRealm"
appName="drools-guvnor"
userClassNames="com.test.User"
roleClassNames="com.test.Role"
useContextClassLoader="false"/>
3/ add a file jaas.config on %TOMCAT_HOME%/conf
drools-guvnor{
com.test.JaasGuvnor required debug=true;
};
4/ Before lunching Tomcat we add “set JAVA_OPTS=-Xmx256m
-Djava.security.auth.login.config=%CATALINA_HOME%/conf/jaas.config”
For more information contact me: mohamed.ensi(a)gmail.com
Regards
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16 years, 1 month
Re: [rules-dev] Append the Logs For the events Fired
by mamadou.ensi
Hi,
You have different way to do this,
example:
you add a new class
public class DroolsLogger {
public static KnowledgeRuntimeLogger fileLogger =null;
public static void verifyLogger (StatefulKnowledgeSession ksession){
if(fileLogger==null)
fileLogger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession,
"drools/logs");
}
public static void closeLogger(){
if(fileLogger!=null)
fileLogger.close();
}
}
In your main class:
DroolsLogger.verifyLogger(session)
session.fireAllRules();
DroolsLogger.closeLogger();
I hope I was clear
Regards
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16 years, 1 month
Drools 5.0 webservice via glassfish
by Philip de Lang
I am investigating how to expose a drools application via a webservice. I
already managed to convert the java classes into an xsd, so I can send an
xml message, run the drools app and receive an xml back. When I try to
deploy the drools application to a glassfish server, it does not work, I
appears, I cannot get the drools system libraries to work with glassfish.
Does anyone have any experience with this or with deploying drools apps as
webservices in common?
Thanks in advance,
Philip.
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16 years, 1 month
