Error deploying activiti process with Service Task

[jcuzcano]

Hi Activiti Team

I have an Activiti project that was created using Spring, Hibernate and Mysql and I want deploy this project with Activiti Probe and execute the process with Activiti Explorer, for this I have created a application.bar, this file only include my bmpn20.xml and other file application.jar with the spring-context.xml, hbm, classes and this file was included into activiti-rest lib, but when I try run the process with Explorer, the application showing this exception.

00070001 Wrapped Exception (with status template): Unknown property used in expression

in the log:

Caused by: org.activiti.engine.impl.javax.el.PropertyNotFoundException: Cannot resolve identifier 'loanRequestService'

this bean was created in the spring-context, I understand that the spring context was not loaded.

What steps are necessary in order to complete this deploy.

Thanks for your response.

[frederikherema1]

Hi,

How exactly do you have your spring-context loaded? The default behaviour of the REST-webapp is to read the activiti.cfg.xml's on the classpath and use this engine. If you want it to use your engine (configured in spring, together with your sping-beans) you should als a ServletContextListener that loads the spring-context.

If you define a process-engine in your spring-context.xml, it will be registered with the static class "ProcessEngines", which activiti-rest (and indirectly probe and explorer) consults to get a process engine to use.

[starmage]

Hi,

i have also that kind of problems.
Here is my spring configuration:



<?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-3.0.xsd">

    <bean id="processHelperBean" class="de.mycompany.beans.ProcessHelperBean"/>

    <bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
        <property name="processEngineConfiguration" ref="processEngineConfiguration" />
    </bean>

    <bean id="transactionDataSource" class="org.springframework.jdbc.datasource.TransactionAwareDataSourceProxy">
        <property name="targetDataSource" ref="dataSource"/>
    </bean>

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="transactionDataSource" />
    </bean>

    <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
        <property name="databaseType" value="mysql" />
        <property name="dataSource" ref="dataSource" />
        <property name="transactionManager" ref="transactionManager" />
        <property name="databaseSchemaUpdate" value="true" />
        <property name="jobExecutorActivate" value="false" />
        <property name="deploymentResources" value="classpath*:/process/*.bpmn20.xml" />
    </bean>

    <bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService" />
    <bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService" />
    <bean id="taskService" factory-bean="processEngine" factory-method="getTaskService" />
    <bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService" />
    <bean id="managementService" factory-bean="processEngine" factory-method="getManagementService" />
    <bean id="identityService" factory-bean="processEngine" factory-method="getIdentityService" />
    <bean id="formService" factory-bean="processEngine" factory-method="getFormService" />

    <bean id="workflowManager" class="de.mycompany.service.WorkflowManager">
        <property name="repositoryService" ref="repositoryService" />
        <property name="runtimeService" ref="runtimeService" />
        <property name="taskService" ref="taskService" />
        <property name="historyService" ref="historyService" />
        <property name="managementService" ref="managementService" />
        <property name="identityService" ref="identityService" />
        <property name="formService" ref="formService" />
        <property name="persistenceManager" ref="persistenceManager" />
    </bean>

</beans>


In my BPMN xml i want to call this line:

<serviceTask id="DEACTIVATED" activiti:expression="${processHelperBean.setStatus('DEACTIVATED')}" />

But i ran into this Exception:

Caused by: org.activiti.engine.impl.javax.el.PropertyNotFoundException: Cannot resolve identifier 'processHelperBean'

Could anyone give me a hint ?! Thank you.

greetz, ralf

[jbarrez]

Ralf, that should just work. Are you sure you are using the process engine from your spring config? How are you obtaining it ?

[partizano]

Hi,

I have similar problem, my exception is "05060000 Wrapped Exception (with status template): Unknown property used in expression"

My process is:
 
  <process id="MyProcess" name="myProcess">
    <documentation>Place documentation for the 'myProcess' process here.</documentation>
    <startEvent id="startevent1" name="Start"></startEvent>
    <endEvent id="endevent1" name="End"></endEvent>
    <serviceTask id="servicetask1" name="Create JPA object" activiti:expression="loanRequestBean.newLoanRequest()" activiti:resultVariableName="loanRequest"></serviceTask>
    <userTask id="usertask1" name="object property is ${loanRequest.customerName}" activiti:assignee="spec"></userTask>
    <sequenceFlow id="flow1" name="" sourceRef="startevent1" targetRef="servicetask1"></sequenceFlow>
    <sequenceFlow id="flow2" name="" sourceRef="servicetask1" targetRef="usertask1"></sequenceFlow>
    <sequenceFlow id="flow3" name="" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>
  </process>
I took beans from examples in the user guid and made little changes in LoanRequestBean class:

public class LoanRequestBean  {

  @PersistenceContext
  private EntityManager entityManager;

  @Transactional
  public LoanRequest newLoanRequest() {
    LoanRequest lr = new LoanRequest();
    lr.setCustomerName("simple name");
    entityManager.persist(lr);
    return lr;
  }
 
  public LoanRequest getLoanRequest(Long id) {
   return entityManager.find(LoanRequest.class, id);
  }
}

@Entity(name = "SPRING_TEST_ORDER")
public class LoanRequest {

  @Id
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  @Column(name = "ID_")
  private Long id;

  @Column(name = "CUSTOMER_NAME_")
  private String customerName;

  @Column(name = "AMOUNT_")
  private Long amount;

  @Column(name = "APPROVED_")
  private boolean approved;

  public Long getId() {
    return id;
  }

  public void setId(Long id) {
    this.id = id;
  }
…
}

My activiti.cfg.xml:

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       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
                           http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
                           http://www.springframework.org/schema/tx      http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

  <context:component-scan base-package="com.mycompany.beans"/>

  <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
    <property name="driverClassName" value="org.h2.Driver" />
    <property name="url" value="jdbc:h2:mem:activiti;DB_CLOSE_DELAY=1000" />
    <property name="username" value="sa" />
    <property name="password" value="" />
     <property name="defaultAutoCommit" value="false" />
  </bean>
 
  <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="false"/>
  <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="entityManagerFactory"/>
  </bean>
 
  <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource"/>
     <property name="persistenceXmlLocation">
      <value>classpath:/com/mycompany/beans/persistence.xml</value>
    </property>
    <property name="jpaVendorAdapter">
      <bean class="org.springframework.orm.jpa.vendor.OpenJpaVendorAdapter">
        <property name="databasePlatform" value="org.apache.openjpa.jdbc.sql.H2Dictionary" />
      </bean>
    </property>
  </bean>
 
  <bean id="loanRequestBean" class="com.mycompany.beans.LoanRequestBean">
  </bean>
 
  <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
    <property name="dataSource" ref="dataSource" />
    <property name="transactionManager" ref="transactionManager" />
    <property name="databaseSchemaUpdate" value="true" />
    <property name="jpaEntityManagerFactory" ref="entityManagerFactory" />
    <property name="jpaHandleTransaction" value="false" />
    <property name="jpaCloseEntityManager" value="false" />
    <property name="jobExecutorActivate" value="false" />
  </bean>
 
  <bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
    <property name="processEngineConfiguration" ref="processEngineConfiguration" />
  </bean>
 
  <bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService" />
  <bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService" />
  <bean id="taskService" factory-bean="processEngine" factory-method="getTaskService" />
  <bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService" />
  <bean id="managementService" factory-bean="processEngine" factory-method="getManagementService" />

</beans>

persistence.xml:

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
     version="1.0"
>
  <persistence-unit name="activiti-jpa-pu">
    <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
   
    <class>com.mycompany.beans.LoanRequest</class>   
   
    <exclude-unlisted-classes>true</exclude-unlisted-classes>
   
     <properties>
      <property name="openjpa.Log" value="DefaultLevel=WARN, Tool=INFO"/>
      <property name="openjpa.LockTimeout " value="30000"/>
      <property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(SchemaAction='add,deleteTableContents')"/>
    </properties>
   
  </persistence-unit>
</persistence>

I have generated jar and put it into c:\Activity\apps\apache-tomcat-6.0.32\webapps\activiti-rest\WEB-INF\lib\. Jar has follow structure:
..
–com
—-mycompany
——beans
——activiti.cfg.xml
——LoanRequest.class
——LoanRequestBean.class
——persistence.xml
–META-INF
—-MANIFEST.MF

I try tu run the process from Activity Explorer and get exception "05060000 Wrapped Exception (with status template): Unknown property used in expression".

What's my mistake?

–
Thanks, Alexander.

[trademak]

Hi,

The spring configuration in your JAR file should be placed in a file named activiti-context.xml.
You should create the activiti-context.xml file in the WEB-INF/classes directory of the activiti-rest application.
Then you should remove the activiti-cfg.jar file from the WEB-INF/lib directory.
Now the Activiti engine will be created based on your Spring configuration.

Best regards,