topic Re: problem to find JavaDelegate class in Alfresco Archive

problem to find JavaDelegate class

ridottiastozze — Tue, 22 Nov 2011 12:44:38 GMT

Hi everyone,I'm not able to link my java class in execution. I would like to use a simple JavaDelegate class but Tomcat launches the exception: caused by: org.activiti.engine.ActivitiClass LoadingException: class not found: packageprovajar.recuperaValoriI write the codeackage packageprovajar;i

Re: problem to find JavaDelegate class

trademak — Wed, 23 Nov 2011 12:36:31 GMT

Hi,

Are you using the process definition from the Activiti Explorer? Because then you need to add the JAR there as well.

Best regards,

Re: problem to find JavaDelegate class

ridottiastozze — Thu, 24 Nov 2011 17:42:20 GMT

Thank you for your answer. I upload the bar file (my bpmn20.xml file) through the webapp user interface. Are you referring to the path: C:\activiti-5.8\apps\apache-tomcat-6.0.32\webapps\activiti-explorer\WEB-INF\lib ? I have tryed to insert the .jar there, but tomcat gives me the same exception. Do you think that I have to set a classpath variable?
ps: Eclipse gives me this the report in the bpmn20.xml file : - cvc-attribute.3: The value 'packageprovajar.recuperaValori' of attribute 'activiti:class' on element 'serviceTask' is not valid with respect to its type, 'null'. It can be related to my problem?
Best regards

Re: problem to find JavaDelegate class

trademak — Fri, 25 Nov 2011 13:19:41 GMT

Hi,

When you copy the JAR to the activiti-explorer/WEB-INF/lib folder the classes in the JAR file are available in the Activiti Explorer.
Please validate of the contents of the JAR file are correct.

Best regards,

Re: problem to find JavaDelegate class

ridottiastozze — Sat, 26 Nov 2011 18:13:03 GMT

hi,
when I validate the eclipse project the compiler doesn't give me any problems or warnings. I have solved the report in the bpmn20.xml file but I'm not able to solve the exception in the Activiti Explorer. I have inserted the .jar file in different directories: C:\activiti-5.8\apps\apache-tomcat-6.0.32\webapps\activiti-explorer\WEB-INF\lib   , C:\activiti-5.8\apps\apache-tomcat-6.0.32\webapps\activiti-rest\WEB-INF\lib ,
C:\activiti-5.8\apps\apache-tomcat-6.0.32\lib .   I have the same problem when i use the listeners.
I attach the modified code:

<process id="provaJavaDelegate" name="delegateJar">
    <startEvent id="startevent1" name="Start"></startEvent>
    <userTask id="usertask1" name="inserimento dati libro1" activiti:candidateGroups="accountancy"></userTask>
    <userTask id="usertask2" name="verifica disponibilita libro1" activiti:candidateGroups="management"></userTask>
    <serviceTask id="servicetask1"
        activiti:class="org.activiti.examples.bpmn.servicetask.BackwardsCompatibleExpressionDelegate" name="javaCode">
</serviceTask>
    <endEvent id="endevent1" name="End"></endEvent>
    <sequenceFlow id="flow1" name="" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
    <sequenceFlow id="flow2" name="" sourceRef="usertask1" targetRef="usertask2"></sequenceFlow>
    <sequenceFlow id="flow3" name="" sourceRef="usertask2" targetRef="servicetask1"></sequenceFlow>
    <sequenceFlow id="flow4" name="" sourceRef="servicetask1" targetRef="endevent1"></sequenceFlow>
</process>

public class BackwardsCompatibleExpressionDelegate implements JavaDelegate {
   public void execute(DelegateExecution execution) throws Exception {
    System.out.println(" I am in BackwardsCompatibleExpressionDelegate….");
   }
}

and a screen shot of my project

I'm sorry for the numerous messages but I need to solve this problem form my thesis.
best regards,

Re: problem to find JavaDelegate class

lisama — Sun, 27 Nov 2011 15:28:44 GMT

How are you creating the jar file? With the "create deployment artefacts" menuitem? That thing has a bug in it as far as I know, it creats jars without a MANIFEST in it. Try the ecplise export option instead.

Re: problem to find JavaDelegate class

ridottiastozze — Mon, 28 Nov 2011 17:26:50 GMT

Great,
now it works. I used "the create deployment artefacts" options. Using the export funtionality I'm able to link to java classes. Thank you for your helpfulness.

Re: problem to find JavaDelegate class

valarmathi — Wed, 10 Oct 2012 08:35:13 GMT

can u help me.
I have export the jar from the eclipse,then where can i put the file and how can i run it.
Please help me.

Thanks,
Valarmathi P