topic Re: Unable to connect Activiti with drools in Alfresco Archive

Unable to connect Activiti with drools

deepakchoudhary — Thu, 30 May 2013 15:26:35 GMT

I want to integrate drools rules with activiti and on deploying my .BAR file (which contains .drl file also) I get an error message Deployment xxxx does not contain rules.I am new to java, activiti and drools.I have followed the steps on the thread http://forums.activiti.org/content/businessruletask

Re: Unable to connect Activiti with drools

jbarrez — Fri, 31 May 2013 12:18:33 GMT

It's very hard to see with this info what went wrong. You need to have the .drl in the .bar. You need to deploy the bar to the engine. You need to reference the correct rule in your process … did you do all that?

By the way, the code of the book is freely available at http://www.bpmnwithactiviti.org/book_sourcecode.html
You can always check there

Re: Unable to connect Activiti with drools

deepakchoudhary — Mon, 03 Jun 2013 18:10:07 GMT

jBarrez Thanks for the link but I couldn't make much out of it.(I actually already had seen the link and had the source code for the book activiti in action.)
This code in the book as well as other threads contain info only for old versions of activiti.
I want to do the integration on activiti 5.12.1 with drools.
Here is the link to my eclipse project
https://github.com/deepakchoudhary/activiti-drools/tree/master/eclipse_project/Calculator
It contains POJO as the input and output object.
As mentioned I have added these four :drools-api, drools-compiler, drools-core and mvel2 jar
to /path/to/tomcat/webapps/activiti-explorer/WEB-INF/lib &
/path/to/tomcat/webapps/activiti-rest/WEB-INF/lib
& I have done no other configurations other than this on server side.
It would be great if you could tell the steps of point towards the steps to do the integration.
(My current problem is still after deploying I still get the error: Deployment xxxx does not contain any rules)

Re: Unable to connect Activiti with drools

trademak — Tue, 04 Jun 2013 08:28:23 GMT

And does it deploy the process definition successfully?
I tried to extract you BAR file, but I get error messages in every extraction tool I have installed.
So I can't validate if the BAR file is correct.

Best regards,

Re: Unable to connect Activiti with drools

deepakchoudhary — Tue, 04 Jun 2013 10:44:35 GMT

Trademak thanks for your fast reply.
If you click on this the proper bar file will be downloaded if that's what you are trying.
https://github.com/deepakchoudhary/activiti-drools/blob/master/eclipse_project/Calculator/deployment/Calculator_flow.bar?raw=true
I tried downloading this and then using actviti-explorer(5.12.1) I deployed the file and it showed three files.
Calculator_flow.bpmn20.xml
Calculator_flow.myProcess.png
rules.drl
And the name of my Process Definition is myProcess and yes it deploys fine and I only get the error(Deployment xxxx does not contain any rules) when the user tries to submit the user task form which leads to the next step, a business task. I have referenced the rule name as rule1 in business task.
(You'll also need to add the four jar files to activiti-explorer and activiti-rest [otherwise it shows org/runtime/drools/rule/agendaFilter] but I believe you already know that)

Re: Unable to connect Activiti with drools

trademak — Tue, 04 Jun 2013 11:37:24 GMT

You need to make sure that the drl is correct. You have an additional "end" statement in the file, so it doesn't parse it correctly.
The Tomcat log file should show that as well.

Best regards,

Re: Unable to connect Activiti with drools

deepakchoudhary — Tue, 04 Jun 2013 13:33:50 GMT

Hi Trademak thanks again for the fast reply..
I have corrected it and now you can download the bar file on the same link(The error is still the same)

Re: Unable to connect Activiti with drools

frederikherema1 — Tue, 04 Jun 2013 14:56:58 GMT

Do you see any additional logging when the user tries to start the task for the same time? This could shed light on what's wrong with your .drl-file. Since the error-message states "deployment XX doesn't contain rules" is shown, the rules-deployer kicks in…

Re: Unable to connect Activiti with drools

deepakchoudhary — Fri, 07 Jun 2013 11:24:36 GMT

Hi Frederik,
Attached is my catalina log, the last thing I tried to say was to start the process and submit the form where I got the same error which I keep on saying.
Just to clarify I am deploying directly from activiti explorer and I I get a red box showing the error when I try to submit. No other error can be seen on the screen as such.

related to this matter I have 3 questions:-
1) I have not used any code relating to some knowledge base. Do I have to write anything related to it?
2) Do I need to make any changes in my activiti.cfg.xml which is by default in the eclipse activiti project.
<code>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd">

<bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration">
<property name="databaseSchemaUpdate" value="true"/>

   <property name="customPostDeployers">
         <list>
           <bean class="org.activiti.engine.impl.rules.RulesDeployer" />
         </list>
      </property>
</bean>

</beans>

</code>
3) Do i need to make change the applicationContext.xml in /path/to/tomcat/webapps/activiti-explorer/WEB-INF/
<code>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jee="http://www.springframework.org/schema/jee"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
       http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd">

<import resource="activiti-standalone-context.xml" />
<import resource="activiti-ui-context.xml" />

</beans>

</code>

Re: Unable to connect Activiti with drools

trademak — Mon, 10 Jun 2013 14:45:38 GMT

Hi,

I just gave your new BAR and JAR a try and now I get this error message:

04:43:04,698 [http-bio-8080-exec-4] INFO org.activiti.engine.impl.rules.RulesDeployer - Processing resource rules.drl
Rule Compilation error : [Rule name='rule1']
org/activiti/demo/rules/Rule_rule1_5c9dfae5adbd472590f0c2368a81dabc.java (9:497) : The method setResult(int) in the type RuleOutput is not applicable for the arguments (String)

Are you using the Activiti Explorer to deploy your process? You should get an error message there when the rule parsing fails.

Best regards,

Re: Unable to connect Activiti with drools

deepakchoudhary — Tue, 25 Jun 2013 18:58:02 GMT

Hi trademak,
I regret for my late reply. I was trying to solve the problem. I did the below thing to start the rules deployer.
I have added new versions of drools libraries and I added
<code>
<property name="customPostDeployers">
         <list>
           <bean class="org.activiti.engine.impl.rules.RulesDeployer" />
         </list>
</property>
</code>
To the activiti-standalone-context.xml and it has started taking rules into consideration. But I am facing an error which I cannot resolve.
The link to my project is https://github.com/deepakchoudhary/activiti-drools.git

I am trying to deploy the bar file on activiti-explorer and it shows the error Could not initialize class org.drools.RuleBaseConfiguration
I have these versions of drool jars:
drools-compiler-5.5.0.Final.jar
drools-core-5.5.0.Final.jar(I added these versions because lower than 5.4.0 versions java 1.7 was not supported and it showed errors for the same)

catalina log:

Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.drools.RuleBaseConfiguration
at org.drools.common.AbstractRuleBase.<init>(AbstractRuleBase.java:155)
at org.drools.reteoo.ReteooRuleBase.<init>(ReteooRuleBase.java:151)
at org.drools.reteoo.ReteooRuleBase.<init>(ReteooRuleBase.java:128)
at org.drools.RuleBaseFactory.newRuleBase(RuleBaseFactory.java:86)
at org.drools.RuleBaseFactory.newRuleBase(RuleBaseFactory.java:74)
at org.drools.RuleBaseFactory.newRuleBase(RuleBaseFactory.java:37)
at org.drools.impl.KnowledgeBaseFactoryServiceImpl.newKnowledgeBase(KnowledgeBaseFactoryServiceImpl.java:49)
at org.drools.KnowledgeBaseFactory.newKnowledgeBase(KnowledgeBaseFactory.java:63)
at org.drools.builder.impl.KnowledgeBuilderImpl.newKnowledgeBase(KnowledgeBuilderImpl.java:81)
at org.activiti.engine.impl.rules.RulesDeployer.deploy(RulesDeployer.java:62)
at org.activiti.engine.impl.persistence.deploy.DeploymentManager.deploy(DeploymentManager.java:42)
at org.activiti.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:68)
at org.activiti.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:33)
at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)
at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:61)
at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:42)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:40)
at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:31)
at org.activiti.engine.impl.RepositoryServiceImpl.deploy(RepositoryServiceImpl.java:70)
at org.activiti.engine.impl.repository.DeploymentBuilderImpl.deploy(DeploymentBuilderImpl.java:134)
at org.activiti.explorer.ui.management.deployment.DeploymentUploadReceiver.deployUploadedFile(DeploymentUploadReceiver.java:96)
at org.activiti.explorer.ui.management.deployment.DeploymentUploadReceiver.uploadFinished(DeploymentUploadReceiver.java:71)
at org.activiti.explorer.ui.custom.UploadComponent.uploadFinished(UploadComponent.java:173)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
… 30 more

Also I have attached the full catalina log.

Re: Unable to connect Activiti with drools

trademak — Thu, 27 Jun 2013 13:48:52 GMT

Where did you add these Drools libraries? Because this class is part of drools-core-5.5.0.Final.jar

Best regards,

Re: Unable to connect Activiti with drools

deepakchoudhary — Thu, 27 Jun 2013 21:09:46 GMT

Hi trademak,
Thanks for the fast response
I had the libraries(jars) in tomcat/activiti-explorer/WEB-INF/lib/
(If I remove the jar files from here then it shows a different error)

I tried 5.5.0.FINAL version of drools-compiler, drools-core and knowledge-api (but a dclass not found occured)(The class was present)
Then I tried all three 5.4.0.FINAL, then a different class not found occured(the class was actually not there).
Then I tried all three 5.3.0.FINAL, and this time the BAR file deployed successfully, but the business rule task is always following the default path. I updated a different workflow but the same thing happened and it always follows the default path irrespective of the value I have entered for it in the form.
(Link to Project BAR File: https://github.com/deepakchoudhary/activiti-drools/blob/master/eclipse_project/Calculator/deployment/MyProcess.bar )

Re: Unable to connect Activiti with drools

trademak — Mon, 01 Jul 2013 09:09:40 GMT

Please make sure that you first test your rule thoroughly in a unit test. Because, again, there's an error in your rule implementation:

11:04:08,920 [http-bio-8080-exec-8] INFO org.activiti.engine.impl.bpmn.deployer.BpmnDeployer - Processing resource MyProcess.bpmn20.xml
11:04:08,973 [http-bio-8080-exec-8] INFO org.activiti.engine.impl.bpmn.deployer.BpmnDeployer - Processing resource rules.drl
11:04:08,973 [http-bio-8080-exec-8] INFO org.activiti.engine.impl.rules.RulesDeployer - Processing resource MyProcess.bpmn20.xml
11:04:08,973 [http-bio-8080-exec-8] INFO org.activiti.engine.impl.rules.RulesDeployer - Processing resource rules.drl
11:04:08,995 [http-bio-8080-exec-8] ERROR org.drools.builder.impl.KnowledgeBuilderImpl - Rule Compilation error : [Rule name='rule1']
org/activiti/demo/rules/Rule_rule1_9252ca46dbfa42829dccfab13db0d3b4.java (9:497) : The method setResult(String) in the type RuleOutput is not applicable for the arguments (int)

The following JARs have to be on the classpath for Drools 5.5.0.Final:

- drools-core-5.5.0.Final.jar
- drools-compiler-5.5.0.Final.jar
- knowledge-api-5.5.0.Final.jar
- knowledge-internal-api-5.5.0.Final.jar
- mvel2-2.1.3.Final.jar
- antlr-3.3.jar
- antlr-runtime-3.3.jar

Best regards,

Re: Unable to connect Activiti with drools

deepakchoudhary — Wed, 03 Jul 2013 18:25:52 GMT

Thanks Trademak,
I added the jars and a few modifications to the rules file.
Its working fine now.

Re: Unable to connect Activiti with drools

golden_boy_t — Sun, 25 May 2014 12:08:35 GMT

Hi Deepak
I have the same problem like your problem
and here is my jar files:
antlr-3.5.jar
antlr-runtime-3.5.jar
drools-compiler-6.0.1.Final.jar
drools-core-6.0.1.Final.jar
knowledge-api-6.0.1.Final.jar
knowledge-internal-api-5.5.0.Final.jar
mvel2-2.1.8.Final.jar

so can you plz tell me where is my problem?

Re: Unable to connect Activiti with drools

trademak — Sun, 25 May 2014 20:08:07 GMT

Hi,

I would expect that the knowledge-internal-api JAR version is the same of the knowledge-api JAR version.

Best regards,

Re: Unable to connect Activiti with drools

nurliyanamuty — Wed, 18 Jun 2014 09:06:43 GMT

Hi, Im new to Activiti and Drools. I have a problem, my .bpmn file cannot be upload to the Activiti explorer. The red warning sign will appear "org/drools/runtime/rule/AgendaFilter".I have followed the thread and put all the dependency. I want to know, what is my problem? Here I uploaded the pom.xml.

This is my rule

package org.activiti.book;
import com.book.activiti.LaptopOrder;

rule “paymentType”
when
lapOrder : LaptopOrder(paymentMode == “creditCard”)
then
lapOrder.setAmtToBePaid((lapOrder.getLaptopAmount()*lapOrder.getLaptopQuantity())-((lapOrder.getLaptopAmount()*lapOrder.getLaptopQuantity())*5/100));
end

Thank You

Re: Unable to connect Activiti with drools

trademak — Thu, 19 Jun 2014 19:09:29 GMT

Our unit tests work against 5.5.0.Final so could you give it a try with that version instead?

Best regards,

Re: Unable to connect Activiti with drools

nurliyanamuty — Wed, 20 Aug 2014 01:23:54 GMT

Hi..Thanks trademak for the response

Sorry for late response. I have use the 5.5.0 Final. I want to integrate drools rules with activiti and on deploying my .BAR file (which contains .drl file also) I get an error message Deployment xxxx does not contain rules.
I have follow all the steps from book Activiti In Action Chapter 12.
I also use the example from ActivitiInAction source code in chapter 12.

But when i try to change the activiti engine configuration in webapps/activiti-explorer/WEBINF/applicationContext.xml with the RulesDeployer, the Tom Cat show the status 404 not found.

I wan to know what is my problem, or is there any step that i miss?

Thank You