3 Replies Latest reply on Aug 14, 2013 5:32 AM by Yassin Daanoun

    JBoss AS7 Classloading

    Yassin Daanoun Newbie

      Hi All,

       

      I am new in the world of  JBoss AS7, I have two JBoss as 5 Classloading files and I want to convert those to JBoss AS 7 Classloading conventions. any help or suggestion ??

       

       

      my-ear-ejb-0.1-SNAPSHOT ->META-INF/jboss-classloading.xml

      <classloading xmlns="urn:jboss:classloading:1.0"
          domain="com.mypackage.jboss.ejb-service-first-0.1-SNAPSHOT"
          parent-domain="com.mypackage.myearejbcommon-0.1-SNAPSHOT"
          import-all="true" 
          parent-first="true" />
      

       

      my-ear-ejb-0.1-SNAPSHOT ->META-INF/jboss-dependency.xml

      <dependency xmlns="urn:jboss:dependency:1.0">
        <item whenRequired="ClassLoader" dependentState="Installed">com.mypackage.myearejbcommon-0.1-SNAPSHOT</item>
      </dependency>
      

       

       

      my-ear-ejbcommon-0.1-SNAPSHOT ->META-INF/jboss-classloading.xml

      <classloading xmlns="urn:jboss:classloading:1.0"
          domain="com.mypackage.myearejbcommon-0.1-SNAPSHOT"
          parent-domain="DefaultDomain"
          export-all="NON_EMPTY"
          import-all="true"
          parent-first="true"  />
      

       

       

      Thanks im advance

        • 1. Re: JBoss AS7 Classloading
          Tomaz Cerar Master

          Hi,

           

          for start it would recommend you to take a look on how classloading works in AS7

           

          https://docs.jboss.org/author/display/AS72/Class+Loading+in+AS7

          if you have additional questions after that, post them here

          • 2. Re: JBoss AS7 Classloading
            Yassin Daanoun Newbie

            thanks for your Feedback, i will take a look on that.

            • 3. Re: JBoss AS7 Classloading
              Yassin Daanoun Newbie

              Hello,

               

              After taking your recommendation Link, the classloading work partially, I am new in JBoss AS 7 and JBoss World especially.  Please can you have a look about the changes what i did for this Classloading Issue form JBoss AS5 to JBoss AS 7(EAP6.1).

               

              For "my-ear-ejbcommon-0.1-SNAPSHOT.ear"

               

              I change the content of "jboss-classloading.xml" (see my first post) to :

               

              META-INF/jboss-deployment-structure.xml

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

              <jboss-deployment-structure>

                  <ear-subdeployments-isolated>false</ear-subdeployments-isolated>

              </jboss-deployment-structure>

               

               

              For "my-ear-ejb-0.1-SNAPSHOT.ear"

               

              I change the content of "jboss-classloading.xml" (see my first post) to :

               

              META-INF/jboss-deployment-structure.xml

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

              <jboss-deployment-structure>

                  <deployment> 

                      <dependencies>

                          <module name="deployment.my-ear-ejbcommon-0.1-SNAPSHOT.ear" export="true"/>

                      </dependencies>

                  </deployment>

              </jboss-deployment-structure>

              I change the content of "jboss-dependency.xml" (see my first post) to :

               

              META-INF/jboss-all.xml

              <jboss umlns="urn:jboss:1.0">

                  <jboss-deployment-dependencies xmlns="urn:jboss:deployment-dependencies:1.0">

                      <dependency name="deployment.my-ear-ejbcommon-0.1-SNAPSHOT.ear" />

                  </jboss-deployment-dependencies>

              </jboss>

                  

               

              My Question, if i am in the right road ??

               

              Q1: What about the other properties that are in "jboss-classloading.xml" such as "domain, parent-domain, import-all, parent-first", how can I defind that in "jboss-deployment-structure.xml" ?? Or with the new JBoss as 7 Architucture , they don't exist or what ??

               

              Because the Classloading in JBoss AS 5 work perfectly between the  a Parent Ear(Generic) and Child Ears. And the Child Ear files depends or Extends classes from "my-ear-ejbcommon-0.1-SNAPSHOT.ear" as a generic Ear file.

               

              Q2: I am worried now and if i will lose the Communication between Multiple Ear files that communicate with a Common Ear File, Is that Classloading Issue 100% or Architucture Issue or Dependency Issue .... ?

               

              Hint : When i put all the jar files in one Single Ear the life is Happy and all works good.    I read that from one of your posting in a similar Issue for the The Communication between Ear Files.

               

              My third Question and the Last one:

               

              Q3: If I will put all in one Single Ear, I must in each every change (Code, ...) in the "Generic" Jars or the Child Jars do a new deployment. Because all are in the same Ear.

              In my case i have more than 50 Child Jars that depends from the Generic one, How can i resolve this Issue in JBoss as 7.

               

              Any Suggestion or new Ideas, I did A deep research and a try a lot of things, that the people from the community said or others developers but i found all what i try helpless.

               

              It seems is a world wide Problem, i am not the only one, the Good thing i still have Hope to resolve this problem by Asking and Orientation from the right people .

               

               

              Thanks in Advance.