topic Re: Integrate Activiti with Drools in Alfresco Archive

Integrate Activiti with Drools

ridottiastozze — Thu, 19 Jan 2012 00:17:03 GMT

Hi,I have to integrate Activiti with the Drools Engine for my thesis but I have some problems. I have inserted in the Activiti Explorer the .bar file, that contains the .bpmn20.xml process and the .drl file. Looking in one previus post I notice that you gave some advices: 1. The drools-api, drool

Re: Integrate Activiti with Drools

trademak — Thu, 19 Jan 2012 07:38:23 GMT

Hi,

That's right. The Activiti Explorer has its own process engine and doesn't use the Activiti REST module.
So the JARs you added to the Activiti REST web app classpath should be in the Activiti Explorer web app classpath.

Best regards,

Re: Integrate Activiti with Drools

ridottiastozze — Thu, 19 Jan 2012 16:01:32 GMT

I have inserterted the activiti-cfg.jar , drools-api-5.1.1.jar, drools-compiler-5.3.0.Final.jar, drools-core-5.3.0.Final.jar and mvel2-2.1.0.drools4.jar , in C:\activiti-5.8\apps\apache-tomcat-6.0.32\webapps\activiti-explorer\WEB-INF\lib but Activiti Explorer gives me the same exception:

com.vaadin.event.ListenerMethod$MethodException
Cause: com.vaadin.event.ListenerMethod$MethodException
Cause: org.activiti.engine.ActivitiException: couldn't find type for RuleInput [salary=1000, age=15, employee=kermit] (I get this values from the form)

I have tested the rule and it is ok. You have tested the code I have attached or it seems to be correct? I am not able to understand if it is a code problem or a configuration problem.
Thank you. matteo

Re: Integrate Activiti with Drools

trademak — Fri, 20 Jan 2012 09:04:43 GMT

Hi,

Did you also create a JAR containing the RuleInput class?
The RuleInput class should also be added to the Activiti Explorer classpath.

Best regards,

Re: Integrate Activiti with Drools

ridottiastozze — Fri, 20 Jan 2012 11:07:15 GMT

The .jar is correct. In fact if I use only a serviceTask to recuper data form I have any problems.

RuleInput ruleInput = new RuleInput();
     ruleInput.setEmployee((String) execution.getVariable("employeeName"));
     Long salario, age;
     salario = (Long)execution.getVariable("salary");
     age = (Long)execution.getVariable("age");
     ruleInput.setSalary(salario.intValue());
     ruleInput.setAge(age.intValue());
    System.out.println("Setting ruleInput " + ruleInput);

The problem is the link with the rule.
If I try to change the code inserting only an Object instead of a ruleInput object:

Object ruleInput = new Object();
execution.setVariable("ruleInput", ruleInput);

and to delete the condition of the rule:
rule "salarycheck"
when
then
    System.out.println("testing");
    RuleOutput o = new RuleOutput();
    o.setResult("rule fired");
    insert(o);
end

<serviceTask id="servicetask1" name="Service Task" activiti:class="org.activiti.demo.rules.CreateRuleObjectDelegate"></serviceTask>
    <businessRuleTask id="businessruletask1" name="Business rule task" activiti:rules="salarycheck"

I have a similar exception:

com.vaadin.event.ListenerMethod$MethodException
Cause: org.activiti.engine.ActivitiException: couldn't find type for java.lang.Object@598a5d

Probably it is a configuration problem.
Best regards,

Re: Integrate Activiti with Drools

trademak — Fri, 20 Jan 2012 15:34:09 GMT

Hi,

The problem is the rulesProcess.jar file. The folder structure is wrong.
Did you create this JAR with the Activiti Designer on Windows? There's a bug that prevents the JAR from being created correctly.

Best regards,

Re: Integrate Activiti with Drools

ridottiastozze — Sat, 21 Jan 2012 19:19:39 GMT

Hi,
I have inserted in the directories …\apache-tomcat-6.0.32\lib and …\activiti-explorer\WEB-INF\lib the .jar that I have created using the Export function of Eclipse. I don't use the .jar that eclipse creates with the createdeploymentartifact function. I attach the image of the structure of the .jar.
There is an other way to create the .jar?

best regards,

Re: Integrate Activiti with Drools

ridottiastozze — Sun, 22 Jan 2012 21:29:59 GMT

I have tryed to call a java dependencies (serviceTask) and to print the data form and it works. When I add to the process a businessRulTask tomcat gives me now this exception:

<businessRuleTask id="businessruletask1" name="Business rule task" activiti:rules="salarycheck" activiti:ruleVariablesInput="${ruleInput}" activiti:exclude="false" activiti:resultVariableName="ruleOutput"></businessRuleTask>

Excaption:
com.vaadin.event.ListenerMethod$MethodException
Cause: com.vaadin.event.ListenerMethod$MethodException
Cause: java.lang.NoSuchMethodError: org.drools.util.CompositeClassLoader.clone()Lorg/drools/util/CompositeClassLoader;
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)
at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1193)
at com.vaadin.ui.Button.fireClick(Button.java:539)

I'm doing many attempts, but I am not able to solve this problem. Help
Best regards,

Re: Integrate Activiti with Drools

ridottiastozze — Wed, 25 Jan 2012 10:51:08 GMT

Do you have any suggestion? I need to solve this problem for my thesis. Thank you.
best regards,

Re: Integrate Activiti with Drools

trademak — Thu, 26 Jan 2012 07:57:28 GMT

Hi,

I've deployed the SalaryProject example that you included in your first post and it works fine with me.
So it must be the steps you performed to get it installed on the Activiti Engine.
In the Activiti in Action book I've written a whole chapter about the Drools and Activiti integration, maybe it's a good idea to work with that chapter to get it working.

Best regards,

Re: Integrate Activiti with Drools

ridottiastozze — Thu, 09 Feb 2012 16:55:47 GMT

Hi,
I have solved the problem editing the webapps/activiti-explorer/WEB-INF/applicationContext.xml. I have added the code:

<bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
    <!– Database configurations –>
    <property name="databaseSchemaUpdate" value="true" />
    <property name="jdbcUrl" value="jdbc:h2:tcp://localhost/activiti" />
    <property name="jdbcDriver" value="org.h2.Driver" />
    <property name="jdbcUsername" value="sa" />
    <property name="jdbcPassword" value="" />
    <property name="jobExecutorActivate" value="true" />
    <property name="dbCycleUsed" value="true" />

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

best regards,

Re: Integrate Activiti with Drools

balu — Tue, 22 Oct 2013 07:08:49 GMT

hi,
I am trying to integrate activiti with drools
i got one sample from activiti forum and followed all the steps correctly
deployed project into activiti explorer its ok, but at the time of starting the process in the explorer its giving the below exception.

pls help me to solve this exception.

com.vaadin.event.ListenerMethod$MethodException: Invocation of method buttonClick in org.activiti.explorer.ui.form.FormPropertiesForm$1 failed.
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:530)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)
at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1219)
at com.vaadin.ui.Button.fireClick(Button.java:567)
at com.vaadin.ui.Button.changeVariables(Button.java:223)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.changeVariables(AbstractCommunicationManager.java:1460)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariableBurst(AbstractCommunicationManager.java:1404)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.java:1329)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleUidlRequest(AbstractCommunicationManager.java:761)
at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:325)
at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:501)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.activiti.explorer.filter.ExplorerFilter.doFilter(ExplorerFilter.java:44)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:724)
Caused by: com.vaadin.event.ListenerMethod$MethodException: Invocation of method componentEvent in org.activiti.explorer.ui.process.ProcessDefinitionDetailPanel$1 failed.
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:530)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)
at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1219)
at org.activiti.explorer.ui.form.FormPropertiesForm.access$000(FormPropertiesForm.java:45)
at org.activiti.explorer.ui.form.FormPropertiesForm$1.buttonClick(FormPropertiesForm.java:139)
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:606)
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
… 26 more
Caused by: java.lang.NullPointerException
at org.activiti.demo.rules.CreateRuleObjectDelegate.execute(CreateRuleObjectDelegate.java:12)
at org.activiti.engine.impl.delegate.JavaDelegateInvocation.invoke(JavaDelegateInvocation.java:34)
at org.activiti.engine.impl.delegate.DelegateInvocation.proceed(DelegateInvocation.java:37)
at org.activiti.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocation(DefaultDelegateInterceptor.java:25)
at org.activiti.engine.impl.bpmn.behavior.ServiceTaskJavaDelegateActivityBehavior.execute(ServiceTaskJavaDelegateActivityBehavior.java:49)

thanks in advance.

bestregards,
balu

Re: Integrate Activiti with Drools

trademak — Wed, 23 Oct 2013 14:30:10 GMT

I really have no idea without any information about what you are doing.

Best regards,

Re: Integrate Activiti with Drools

balu — Fri, 25 Oct 2013 13:34:31 GMT

Hai,
I am trying to integrate activiti with drools

I have inserterted the activiti-cfg.jar , drools-api-5.5.0.jar, drools-compiler-5.5.0.Final.jar, drools-core-5.5.0.Final.jar and mvel2-2.1.3.Final.jar , in activiti-5.8\apps\apache-tomcat-6.0.37\webapps\activiti-explorer\WEB-INF\lib,

I have deployed zip file (contains ruleprocess.bpmn and rule.drl files) into activiti explorer successfully,but at the time of starting the process its giving error "Deployeement xxxx does't contain any rules "

this is my .drl file:
————————
rule "ruleauthentication"
when
    ruleInput : RuleInput( order == "fozzie" )
then
RuleInput ruleinput=new RuleInput();
    System.out.println("testing");
    ruleInput.setOrder("ruleinput");

end

this is my .bpmn file:
—————————–
<code>
<process id="rulestest" name="RuleTest" isExecutable="true">
    <businessRuleTask id="businessruletask1" name="Business rule task" activiti:ruleVariablesInput="${order}" activiti:rules="HelloWorld,secondrule" activiti:resultVariable="ruleoutput"></businessRuleTask>
    <endEvent id="endevent1" name="End"></endEvent>
    <startEvent id="startevent1" name="Start"></startEvent>
    <userTask id="usertask1" name="kermit" activiti:assignee="kermit" activiti:candidateUsers="kermit">
      <extensionElements>
        <activiti:formProperty id="order" name="assign to" type="string" variable="order" required="true"></activiti:formProperty>
      </extensionElements>
    </userTask>
    <sequenceFlow id="flow3" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
    <sequenceFlow id="flow4" sourceRef="usertask1" targetRef="businessruletask1"></sequenceFlow>
    <userTask id="usertask2" name="fozzie" activiti:assignee="kermit" activiti:candidateUsers="fozzie"></userTask>
    <sequenceFlow id="flow5" sourceRef="usertask2" targetRef="endevent1"></sequenceFlow>
    <sequenceFlow id="flow6" sourceRef="businessruletask1" targetRef="usertask2"></sequenceFlow>
</process>
</code>
please help me to solve this .

thanks in advance.

Best Regards,

balu

Re: Integrate Activiti with Drools

balu — Fri, 25 Oct 2013 13:54:26 GMT

here i am getting error see the screen shot.

thanks.

Best Regards,
balu