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Asked: 2026-05-17T00:03:50+00:00

I was reading the tutorial on this page: http://edocs.bea.com/docs/cd/E13222_01/wls/docs81/medrec_tutorials/ejbgen.html#858279 And I have the following

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I was reading the tutorial on this page:
http://edocs.bea.com/docs/cd/E13222_01/wls/docs81/medrec_tutorials/ejbgen.html#858279

And I have the following file BankAccountEJB.java


import javax.ejb.CreateException;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;

public abstract class BankAccountEJB implements EntityBean {

private EntityContext context;

public void setEntityContext(EntityContext aContext) {
    context = aContext;
}

public void ejbActivate() {

}

public void ejbPassivate() {

}

public void ejbRemove() {

}

public void unsetEntityContext() {
    context = null;
}

public void ejbLoad() {

}

public void ejbStore() {

}

public abstract String getName();

public abstract void setName(String name);

public abstract Float getBalance();

public abstract void setBalance(Float balance);

public java.lang.Long ejbCreate(String name, Float balance)  throws CreateException {
    if (name == null) {
        throw new CreateException("The field \"key\" must not be null");
    }

    // TODO add additional validation code, throw CreateException if data is not valid
    setName(name);

setBalance(balance);

    return null;
}

public void ejbPostCreate(java.lang.Long key) {
    // TODO populate relationships here if appropriate
}

}

and I run java weblogic.tools.ejbgen.EJBGen -ddOnlyGen BankAccountEJB.java which produces the following error:

Exception in thread “main” com.bea.wls.ejbgen.EJBGenException: ejbName is a required attribute
at com.bea.wls.ejbgen.Bean.createBeanSpecificTags(Bean.java:202)
at com.bea.wls.ejbgen.Bean.(Bean.java:127)
at com.bea.wls.ejbgen.EntityBean.(EntityBean.java:76)
at com.bea.wls.ejbgen.EJBFactory.createBean(EJBFactory.java:135)
at com.bea.wls.ejbgen.EJBFactory.createBean(EJBFactory.java:99)
at com.bea.wls.ejbgen.EJBGenSGen.initModule(EJBGenSGen.java:106)
at com.bea.sgen.SGen.run(SGen.java:205)
at com.bea.wls.ejbgen.EJBGen.main(EJBGen.java:212)
at com.bea.wls.ejbgen.EJBGen.main(EJBGen.java:238)
at weblogic.tools.ejbgen.EJBGen.main(EJBGen.java:21)

Any input will be greatly appreciated~!

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1 Answer

  1. Editorial Team

    Note: Are you still running Weblogic 8.1 – it’s already reached end of life. Also ejbgen works with EJB 2.x and over the last 2 years, development has moved on to EJB 3, so i’d advise you to catch up on those.

    Now to your specific problem.

    Your code does not seem to have the required annotations for ejbgen to work.

    Annotations like this which are used in generation of the descriptors.

     * @ejbgen:entity
 *   ejb-name = containerManaged
 *   table-name = ejbAccounts
 *   data-source-name = examples-dataSource-demoPool
 *   prim-key-class =  AccountPK
 *   invalidation-target = ServiceDesignEJB

    As your URL says the code in the tutorial has the right data as a sample – make sure you replicate those correctly in your own code.

    EJBGen uses annotations in the bean
    file to generate the deployment
    descriptor files and the EJB Java
    source files. EJB files in the MedRec
    application are already annotated for
    EJBGen.

    For another version of ejbgen, see http://www.beust.com/ejbgen/

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