Re: Problem accessing Entity Bean, Getting SystemExceptionInterceptor warning

Tue, 15 Aug 2006 13:11:22 -0700 

Hi Lasantha,
I finally got my entity bean working. The requisite "user-error" applies here (*blush*). What happend is that I started out my entity bean using CMP. When I ran into problems, I switched it to BMP. However, in the course of the switch, I forgot to remove the "abstract" keyword at the beginning of the class definition when implementing the entity bean! Once I removed it, there was much rejoicing. I have since been able to get CMP working as well. Ugh, I'm so embarrased. 


Thanks for responding and thank you for your example code! It really helped 
me out a lot!


Very much appreciated,
Dale



From: Lasantha Ranaweera <[EMAIL PROTECTED]>
Reply-To: [email protected]
To: [email protected]

Subject: Re: Problem accessing Entity Bean, Getting 
SystemExceptionInterceptor warning

Date: Tue, 15 Aug 2006 18:37:46 +0530

Hi Dale,

Can you give more information on your client application?


Also have a look at 
http://cwiki.apache.org/confluence/display/GMOxDOC11/EJB+sample+application. 
But it is not yet finished. Hope it this will help to you too.


Regards,
Lasantha Ranaweera
Senior Software Engineer,
Lanka Sofware Foundation,
Sri Lanka.

Dale de los Reyes wrote:

Hello,


I need some help. I've been having problems accessing an entity bean from 
my session bean. I've coded similar EJBs before and they've successfully 
run on Geronimo 1.0. I tried using the upgrade.jar utility on these old 
beans, but was unable to get them to deploy. When the example programs 
became available, I gave up trying to use the upgrade tool. Now, the 
application seems to deploy just fine with no error messages being 
returned in the console window, but there are some debug messages in the 
log file.



When I access my application, the session bean seems to locate the entity 
bean successfully. But when I call a method belonging to that entity bean, 
I get a "SystemExceptionInterceptor" warning. I'm not sure what this 
means, other than I'm doing something wrong.



I'm using Geronimo 1.1 with Tomcat and Java 1.4.2_10. The descriptor files 
are modelled after the Bank demo supplied in the user manual which I was 
able to get running. My test application is deployed as an ear file via 
Hot Deployer.



The descriptor files (ejb-jar.xml, openejb-jar.xml) and stack trace are 
below for my test application. I hope someone can point out what I'm 
missing or doing wrong.


Thanks,
Dale


ejb-jar.xml
-----------

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


<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise 
JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd";>


<ejb-jar>
  <enterprise-beans>
     <session>
        <ejb-name>ProcessCustomerSessionBean</ejb-name>
        <home>com.service.customer.ejb.ProcessCustomerHome</home>
        <remote>com.service.customer.ejb.ProcessCustomer</remote>

        
<ejb-class>com.service.customer.ejb.ProcessCustomerSessionBean</ejb-class>


        <session-type>Stateless</session-type>
        <transaction-type>Container</transaction-type>

        <ejb-ref>
           <ejb-ref-name>ejb/CustomerHome</ejb-ref-name>
           <ejb-ref-type>Entity</ejb-ref-type>
           <home>com.service.customer.ejb.CustomerHome</home>
           <remote>com.service.customer.ejb.Customer</remote>
           <ejb-link>CustomerEntityBean</ejb-link>
        </ejb-ref>
     </session>

     <entity>
        <ejb-name>CustomerEntityBean</ejb-name>
        <home>com.service.customer.ejb.CustomerHome</home>
        <remote>com.service.customer.ejb.Customer</remote>

        
<ejb-class>com.service.customer.ejb.CustomerEntityBean</ejb-class>


        <persistence-type>Bean</persistence-type>
        <prim-key-class>java.lang.String</prim-key-class>
        <reentrant>False</reentrant>

        <resource-ref>
           <res-ref-name>jdbc/CustomerServiceDataSource</res-ref-name>
           <res-type>javax.sql.DataSource</res-type>
           <res-auth>Container</res-auth>
        </resource-ref>
     </entity>
  </enterprise-beans>

  <assembly-descriptor>
     <container-transaction>
        <method>
           <ejb-name>ProcessCustomerSessionBean</ejb-name>
           <method-name>*</method-name>
        </method>

        <trans-attribute>Required</trans-attribute>
     </container-transaction>
  </assembly-descriptor>
</ejb-jar>

*****

openejb-jar.xml
---------------

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

<openejb-jar xmlns="http://www.openejb.org/xml/ns/openejb-jar-2.1";>

  <dep:environment 
xmlns:dep="http://geronimo.apache.org/xml/ns/deployment-1.1";>

     <dep:moduleId>
        <dep:groupId>default</dep:groupId>
        <dep:artifactId>CustomerService-ejb</dep:artifactId>
        <dep:version>1.0</dep:version>
        <dep:type>jar</dep:type>
     </dep:moduleId>

     <dep:dependencies>
        <dep:dependency>
           <dep:groupId>console.dbpool</dep:groupId>
           <dep:artifactId>CustomerServicePool</dep:artifactId>
           <dep:version>1.0</dep:version>
           <dep:type>rar</dep:type>
        </dep:dependency>
     </dep:dependencies>

     <dep:hidden-classes/>
     <dep:non-overridable-classes/>
  </dep:environment>

  <enterprise-beans>
     <session>
        <ejb-name>ProcessCustomerSessionBean</ejb-name>
        <jndi-name>ProcessCustomerRemoteSessionBean</jndi-name>

        <ejb-ref>
           <ref-name>ejb/CustomerHome</ref-name>
           <ejb-link>CustomerEntityBean</ejb-link>
        </ejb-ref>
     </session>

     <entity>
        <ejb-name>CustomerEntityBean</ejb-name>
        <jndi-name>CustomerRemoteEntity</jndi-name>

        <resource-ref>
           <ref-name>jdbc/CustomerServiceDataSource</ref-name>
           <resource-link>CustomerServicePool</resource-link>
        </resource-ref>
     </entity>
  </enterprise-beans>
</openejb-jar>

*****

This stack trace is taken from "geronimo-1.1/var/log/geronimo.log"


09:28:35,491 DEBUG [GBeanSingleReference] Waiting to start 
default/CustomerService/1.0/ear?J2EEApplication=default/CustomerService/1.0/ear,j2eeType=EJBModule,name=CustomerService-ejb.jar 
because no targets are running for reference J2EEApplication matching the 
patterns 
default/CustomerService/1.0/ear?j2eeType=J2EEApplication,name=default/CustomerService/1.0/ear



09:28:35,631 DEBUG [GBeanSingleReference] Waiting to start 
default/CustomerService/1.0/ear?J2EEApplication=default/CustomerService/1.0/ear,j2eeType=EJBModule,name=PubQueryEJB.jar 
because no targets are running for reference J2EEApplication matching the 
patterns 
default/CustomerService/1.0/ear?j2eeType=J2EEApplication,name=default/CustomerService/1.0/ear


09:29:19,985 WARN  [SystemExceptionInterceptor] CustomerEntityBean

javax.transaction.TransactionRolledbackException: 
com.service.customer.ejb.CustomerEntityBean
    at 
org.openejb.transaction.ContainerPolicy$TxRequired.invoke(ContainerPolicy.java:126)



    at 
org.openejb.transaction.TransactionContextInterceptor.invoke(TransactionContextInterceptor.java:80)



    at 
org.openejb.SystemExceptionInterceptor.invoke(SystemExceptionInterceptor.java:82)



    at 
org.openejb.GenericEJBContainer.invoke(GenericEJBContainer.java:238)
    at 
org.openejb.proxy.EJBMethodInterceptor.intercept(EJBMethodInterceptor.java:164)



    at 
org.openejb.proxy.EntityEJBHome$$EnhancerByCGLIB$$d8dd02dd.findByAll(<generated>)



    at 
com.service.customer.ejb.ProcessCustomerSessionBean.findAllCustomers(ProcessCustomerSessionBean.java:70)



    at 
com.service.customer.ejb.ProcessCustomerSessionBean$$FastClassByCGLIB$$5aed4974.invoke(<generated>)



    at 
org.openejb.dispatch.AbstractMethodOperation.invoke(AbstractMethodOperation.java:90)


    at org.openejb.slsb.BusinessMethod.execute(BusinessMethod.java:67)

    at 
org.openejb.dispatch.DispatchInterceptor.invoke(DispatchInterceptor.java:72)



    at 
org.apache.geronimo.naming.java.ComponentContextInterceptor.invoke(ComponentContextInterceptor.java:56)



    at 
org.openejb.ConnectionTrackingInterceptor.invoke(ConnectionTrackingInterceptor.java:81)



    at 
org.openejb.transaction.ContainerPolicy$TxRequired.invoke(ContainerPolicy.java:119)



    at 
org.openejb.transaction.TransactionContextInterceptor.invoke(TransactionContextInterceptor.java:80)



    at 
org.openejb.slsb.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:98)



    at 
org.openejb.transaction.ContainerPolicy$TxRequired.invoke(ContainerPolicy.java:140)



    at 
org.openejb.transaction.TransactionContextInterceptor.invoke(TransactionContextInterceptor.java:80)



    at 
org.openejb.SystemExceptionInterceptor.invoke(SystemExceptionInterceptor.java:82)



    at 
org.openejb.GenericEJBContainer.invoke(GenericEJBContainer.java:238)
    at 
org.openejb.proxy.EJBMethodInterceptor.intercept(EJBMethodInterceptor.java:164)



    at 
org.openejb.proxy.SessionEJBObject$$EnhancerByCGLIB$$ba84632c.findAllCustomers(<generated>)



    at 
com.service.customer.web.CustomerServiceJavaBean.getAllCustomers(CustomerServiceJavaBean.java:94)



    at 
org.apache.jsp.customers.index_jsp._jspService(org.apache.jsp.customers.index_jsp:81)


    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)

    at 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)



    at 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)

    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)

    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)



    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)



    at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)



    at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)



    at 
org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:46)



    at 
org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:342)



    at 
org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:31)



    at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)



    at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)



    at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)



    at 
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
    at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)



    at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)



    at 
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667)



    at 
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)



    at 
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)



    at 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)


    at java.lang.Thread.run(Thread.java:534)






























					Reply via email to