OSGi version of Drools
by Flavius Vespasianus
Hello,
is there anywhere a OSGi bundle with Drools 4.0.7? I know about
com.springsource.org.drools.* but these had a lot of additional
dependencies and I wasn't able to get them work.
My problem is that I need to have three projects: one is the basic
library which uses Drools very intensively. The second project is editor
- an Eclipse plugin (that's why I need the OSGi bundle) using some
classes from the basic library. It doesn't use Drools, but there is a
dependency. The third project is classic Java application, also using
the basic library.
The basic library was originally created using standard Drools project
wizard (I have downloaded the Eclipse Drools plugin -
org.drools.eclipse). But when I tried to deploy it as an Eclipse plugin,
it couldn't find the Drools classes.
I found a little workaround - I have compiled the binaries (drools-core,
drools-compiler and from libs the mvel, antlr3 and eclipse-jdt-core)
into separate plugin using "Create a plugin from existing jars" wizard.
But if I add this dependency to the basic library, I get a
NullPointerException error on every dslr file and I cannot run the
application properly). At least the second project (editor) can be compiled.
What am I doing wrong? Or can I find somewhere the binaries compiled
correctly into OSGi bundle?
Thanks a lot!
Flavius
12 years, 4 months
Drools Expert 5 OSGi
by jflamy
I want to manage Drools Expert rules with Drools Guvnor. My understanding is
that requires the use of Drools Expert version 5.
I also need to use an OSGi-packaged version of Drools Expert.
I saw a forum posting in 2010 alluding to such a beast, but the springsource
forums only provide 4.0.7.
Is there a ready-made OSGi bundle for drools expert 5, or alternately
specific instructions for building one ?
Jean-François Lamy
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12 years, 4 months
Drools Server 5.1.1 - can't run test.jsp
by OlliSee
Hi there.
I was trying to setup the Drools Server. As I understand, this is not a
server per se, its just the usual Drools with some framework plumbing. But I
appreciate not having to do that myself. But I can't get it to work.
I imported the .war file into my Eclipse and tried to deploy it to a few
application servers, but it didn't work.
I tried Tomcat 6/7, JBoss AS 4.2.2/4.2.3/5.0.1/5.1.0 (I know, they are just
using Tomcat, but I gave it a shot anyway...).
The .war deploys right I guess. But as soon as I try to run the test.jsp, I
get a lot of errors.
The log below is from Tomcat 6,...
31.01.2011 10:51:00 org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal
performance in production environments was not found on the
java.library.path:
C:\Programme\Java\jdk1.6.0_22\bin;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:/Programme/Java/jre6/bin/client;C:/Programme/Java/jre6/bin;C:/Programme/Java/jre6/lib/i386;C:\Programme\ActiveState
Komodo Edit 6\;C:\Programme\Mendeley
Desktop\wordPlugin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;%JAVA_HOME%\bin;C:\Programme\QuickTime\QTSystem\;C:\derby\bin
31.01.2011 10:51:00 org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNUNG: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting
property 'source' to 'org.eclipse.jst.jee.server:drools-5.1.1-server' did
not find a matching property.
31.01.2011 10:51:00 org.apache.coyote.AbstractProtocolHandler init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
31.01.2011 10:51:00 org.apache.coyote.AbstractProtocolHandler init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
31.01.2011 10:51:00 org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 616 ms
31.01.2011 10:51:00 org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
31.01.2011 10:51:00 org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.6
31.01.2011 10:51:01 org.apache.catalina.loader.WebappClassLoader
validateJarFile
INFO: validateJarFile(C:\Dokumente und Einstellungen\o.roess\Eigene
Dateien\Drools Server
Workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\drools-5.1.1-server\WEB-INF\lib\servlet-api-2.3.jar)
- jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class:
javax/servlet/Servlet.class
31.01.2011 10:51:11 org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext
log4j:WARN No appenders could be found for logger
(org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
31.01.2011 10:51:18 org.apache.cxf.endpoint.ServerImpl initDestination
INFO: Setting the server's publish address to be /kservice/rest
31.01.2011 10:51:18 org.apache.cxf.transport.servlet.CXFServlet
updateContext
INFO: Load the bus with application context
31.01.2011 10:51:19 org.apache.cxf.transport.servlet.AbstractCXFServlet
replaceDestinationFactory
INFO: Servlet transport factory already registered
31.01.2011 10:51:19 org.apache.coyote.AbstractProtocolHandler start
INFO: Starting ProtocolHandler ["http-bio-8080"]
31.01.2011 10:51:19 org.apache.coyote.AbstractProtocolHandler start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
31.01.2011 10:51:19 org.apache.catalina.startup.Catalina start
INFO: Server startup in 18193 ms
Maybe there is already something wrong?
Ok then, this happens when I try to navigate to the test.jsp in my browser
31.01.2011 10:55:00 org.apache.cxf.phase.PhaseInterceptorChain
doDefaultLogging
WARNUNG: Interceptor for
{http://localhost:8080/drools-server-app/kservice/rest}WebClient has thrown
exception, unwinding now
org.apache.cxf.interceptor.Fault: Could not send Message.
at
org.apache.cxf.interceptor.MessageSenderInterceptor$MessageSenderEndingInterceptor.handleMessage(MessageSenderInterceptor.java:64)
at
org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:243)
at
org.apache.cxf.jaxrs.client.WebClient.doChainedInvocation(WebClient.java:615)
at
org.apache.cxf.jaxrs.client.WebClient.doInvoke(WebClient.java:596)
at org.apache.cxf.jaxrs.client.WebClient.invoke(WebClient.java:241)
at
org.apache.camel.component.cxf.jaxrs.CxfRsProducer.invokeHttpClient(CxfRsProducer.java:129)
at
org.apache.camel.component.cxf.jaxrs.CxfRsProducer.process(CxfRsProducer.java:71)
at
org.apache.camel.impl.converter.AsyncProcessorTypeConverter$ProcessorToAsyncProcessorBridge.process(AsyncProcessorTypeConverter.java:50)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
at
org.apache.camel.processor.SendProcessor$2.doInAsyncProducer(SendProcessor.java:104)
at
org.apache.camel.impl.ProducerCache.doInAsyncProducer(ProducerCache.java:272)
at
org.apache.camel.processor.SendProcessor.process(SendProcessor.java:98)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)
at
org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:99)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
at
org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:290)
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:202)
at
org.apache.camel.processor.DefaultChannel.process(DefaultChannel.java:256)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:143)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:78)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)
at
org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:99)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
at
org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:290)
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:202)
at
org.apache.camel.processor.DefaultChannel.process(DefaultChannel.java:256)
at
org.apache.camel.processor.UnitOfWorkProcessor.process(UnitOfWorkProcessor.java:113)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:68)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
at
org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:61)
at
org.apache.camel.processor.UnitOfWorkProcessor.process(UnitOfWorkProcessor.java:99)
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:91)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:85)
at
org.apache.camel.processor.UnitOfWorkProducer.process(UnitOfWorkProducer.java:63)
at
org.apache.camel.impl.ProducerCache$1.doInProducer(ProducerCache.java:333)
at
org.apache.camel.impl.ProducerCache$1.doInProducer(ProducerCache.java:304)
at
org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:208)
at
org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:303)
at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:171)
at
org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:114)
at
org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:118)
at
org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:135)
at
org.apache.camel.impl.DefaultProducerTemplate.requestBody(DefaultProducerTemplate.java:283)
at
org.apache.camel.impl.DefaultProducerTemplate.requestBody(DefaultProducerTemplate.java:313)
at org.drools.server.Test.execute(Test.java:68)
at org.drools.server.Test.send(Test.java:60)
at org.apache.jsp.test_jsp._jspService(test_jsp.java:77)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:417)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:550)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:380)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166)
at
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:288)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.io.IOException: IOException invoking
http://localhost:8080/drools-server-app/kservice/rest/execute: HTTP response
'404: Not Found'
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at
org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.mapException(HTTPConduit.java:2058)
at
org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.close(HTTPConduit.java:2043)
at
org.apache.cxf.transport.AbstractConduit.close(AbstractConduit.java:66)
at
org.apache.cxf.transport.http.HTTPConduit.close(HTTPConduit.java:639)
at
org.apache.cxf.interceptor.MessageSenderInterceptor$MessageSenderEndingInterceptor.handleMessage(MessageSenderInterceptor.java:62)
... 79 more
Caused by: java.io.IOException: HTTP response '404: Not Found'
at
org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponseInternal(HTTPConduit.java:2194)
at
org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponse(HTTPConduit.java:2134)
at
org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.close(HTTPConduit.java:1988)
... 82 more
Anyone got an idea?
Thanks!
Kind regards
Oliver
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12 years, 4 months
'else' in rule
by snehils
Hi All,
I want to take action when the condition in WHEN fails. Something like as
follows:
WHEN
<Condition>
THEN
<Action>
/ELSE
<Action when Condition fails>/
Is it possible to have else part in rule? Or I have to make another rule for
failed condition?
I am using Drools 5.1.0 version.
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12 years, 4 months
MVEL expression
by Femke De Backere
Hi,
The following expression keeps returning the error [112,32]: [ERR 103]
Line 112:32 no viable alternative at input '+' in rule "RuleFlow-Split-
masterproef.ruleflows.shortsedation-18-22" in pattern Patient:
Patient(sedation.ultiva+0.02 > 0.1)
with sedation.ultiva returning a double
What am I doing wrong?
Thx,
Femke
12 years, 4 months
CDI Integration
by Robert Morse
I was asking the Seam 3 guys about Drools support, and Shane Bryzak replied:
"We need to update that page - Seam will not be providing a Drools module, rather the Drools team will be providing native CDI integration instead."
Any idea when there will be CDI support?
The human mind is an iterative processor, it never does anything right the first time. What it does well is to make improvements on every iteration (deMarco)
12 years, 4 months
Re: [rules-users] Firing Mulitple packages
by Esteban Aliverti
Could you post the way you are using to add kassets to kbase?
El ago 13, 2010 12:20 p.m., "Vignesh" <viki.ccc(a)gmail.com> escribió:
Hi Esteban,
I have tried the same logic by adding all the packages in my application in
to the kbase and executed the same, but only the drl file got loaded in it,
other kassets like dsl, ruleflow present in it were not added to the same.
Do we need to add everything separetly?
Kindly let me know whether im missing something here.
Thanks,
Vignesh
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____________________________________...
12 years, 4 months
RuleFlow WorkItem check for abort
by cherokee
Hello,
I am newbie to using drools and using version 5.1.1 for my ruleflow test
case.
Testcase:
In the workItemHandler for a workitem, whenever exception occurs I catch the
exception and
set manager.abortWorkItem(workItem.getId());
I have 2 questions:
1) Is there a way in the onExit of workItem i can check the state to
determine if it has been aborted or completed succesfully?
2) When does the "abortWorkItem" method on workItemHandler get called?
Appreciate your time in replying to my queries.
Thanks!
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12 years, 5 months
How to handle generics in Drools?
by Martin A
Hello,
In my rules file I'd like to set something like this:
rule "mayThrowDice"
when
$user : User($gp : gameplay)
$gameplay(this == $gp)
then
exists List<Boost>() {
..... some business logic
}
end
But it looks like there is no generics support. How can I make sure there is
a List of type Boost inserted into the session?
Thank you,
Martin
12 years, 5 months
