1 Reply Latest reply on Oct 6, 2015 12:17 PM by Jay SenSharma

    How reference to jar-file that exists in ear-file from external module

    Ville Korppi Newbie

      Is there any way to reference jar-file in ear-file from module.xml. I have jar-file that has dependency to other jar-file that exists in ear-file.

        • 1. Re: How reference to jar-file that exists in ear-file from external module
          Jay SenSharma Master

          Hello,

           

             It is not a good practice to try referencing the Jar file (library) of an EAR from an outside JBoss module.  As applications (like EAR/WAR...) are "Dynamic Modules" and the JBoss Modules which we create inside the "$JBOSS_HOME/modules" directory are considered as "Static Modules"

           

             We should try to avoid all the scenarios where the Static modules will try to attempt to access the resources/jars present inside the Dynamic Modules (deployed applications).

           

             But using TCCL it should be possible to do so,

           

          Example:

             If you have following kind of code present inside your "Static Module"

           

          public class MyModuleClass {
                  public static void someMethod(String dynamicModuleResource) {
                       InputStream is =  Thread.currentThread().getContextClassLoader().getResourceAsStream(dynamicModuleResource);   
                       // Suppose dynamicModuleResource="/META-INF/something.properties"
                        // try reading the above stream.
                  }
          }
          

           

             And if you application which is deployed to the JBoss EAP6 has the following kind of code:

           

          public MyEJB {
                public void test{} {
                      MyModuleClass.someMethod("/META-INF/something.properties");         // this file is present inside the EJB JAR
                }
            }
          

           

          But that is not always possible in case of third party APIs where you do not have much options to use the TCCL.