在运行时从MDB内部访问ejb-name

Question

Giving this entry from ejb-jar.xml

<message-driven id="my_test_mdb ">
        <description>Some description</description>
        <display-name>MyTest</display-name>
        <ejb-name>MyTestEJB</ejb-name>
        <ejb-class>some.path.to.TestMessageBean</ejb-class>
        <transaction-type>Container</transaction-type>
        <message-driven-destination>
            <destination-type>javax.jms.Queue</destination-type>
        </message-driven-destination>
</message-driven>

Is there a way to access at runtime the values defined for my_test_mdb. I am mainly interested in getting the ejb-name value but the same question should be asked for the others like display-name and so.

I am aware about the fact that I could add some environment entries like below but this looks to me like a sort of duplication and error prone.

<message-driven>
    ...
    <ejb-name>MyTestEJB</ejb-name>
    ...
    <env-entry>
            <env-entry-name>ejbName</env-entry-name>
            <env-entry-type>java.lang.String</env-entry-type>
            <env-entry-value>MyTestEJB</env-entry-value>
    </env-entry>
</message-driven>

I tried to put a breakpoint and evaluate new InitialContext().lookup("java:comp/env") then iterate through either list and listBindings but that will only bring me the env-entry section not what I want.

It is very frustrating as at run time I can inspect some elements and clearly able to see what I am after

javaNameSpaceImpl:{appName=someModule,_moduleName=someModuleEJB,_componentName=MyTestEJB,_bootstrapAddress=rir:…etc}

Any idea about how can this be achieved?

Thank you in advance.

Answer 1

There is no standard way to retrieve the component name. I agree that it's unfortunate that there's no java:comp/CompName (ala java:app/AppName and java:module/ModuleName) or EJBContext.getName(). My recommendation in the past has always been the env-entry approach, which I agree is not ideal.