2 Replies Latest reply on Feb 16, 2007 9:51 AM by Florian Bauer

    Retrieve retrieve Entity Class mapping from jboss

    Fabrice Sommavilla Newbie

      Hi,
      I'd like to know if there is a way to retrieve a list of Entity Class mapping, from JBOSS like in Hibernate with

      new Configuration().configure().getClassMappings();


      But without implementing a MBean, just with JNDI and JBOSS api ?

      I'am using JBoss AS v.4.0.5 and EJB3 with JBoss-ide plugins.

      Thx.

        • 1. Re: Retrieve retrieve Entity Class mapping from jboss
          Florian Bauer Newbie

          I hava just a bad solution, but it would be greate to find something better:

           public static Class[] getClassesFromPackage(final String strPackageName) throws ClassNotFoundException
           {
           ArrayList<Class> classes = new ArrayList<Class>();
           // Get a File object for the package
           File directory = null;
           String[] files = null;
           try
           {
           ClassLoader cld = Thread.currentThread().getContextClassLoader();
           if (cld == null)
           {
           throw new ClassNotFoundException("Can't get class loader.");
           }
           String path = strPackageName.replace('.', '/');
           //String path = '/' + pckgname.replace('.', '/');
           URL resource = cld.getResource(path);
           if (resource == null)
           {
           throw new ClassNotFoundException("No resource for " + path);
           }
           if(resource.getPath().contains("!"))
           {
           String[] arZipPath = resource.getPath().split("\\!");
           if(arZipPath.length >= 1)
           {
           String strZipPath = arZipPath[0].substring(6);//cut up 'file:/'
           try {
           JarFile jarFile = new JarFile(new File(strZipPath));
           List<String> lClassNames = new ArrayList<String>();
           for ( Enumeration e = jarFile.entries(); e.hasMoreElements(); )
           {
           JarEntry target = (JarEntry) e.nextElement();
           String strTargetName = target.getName();
           if(strTargetName.endsWith(".class") && strTargetName.startsWith(path + "/") && !target.isDirectory())
           {
           String strClassName = strTargetName.substring(path.length()+1);
           if(!strClassName.contains("/"))
           lClassNames.add(strClassName);
           }
          
           }
           files = (String[])lClassNames.toArray(new String[lClassNames.size()]);
           }
           catch (IOException e)
           {
           throw new ClassNotFoundException(strPackageName + " (" + strZipPath + ") does not appear to be a valid (JAR-) package");
           }
           }
           }
           else
           {
           directory = new File(resource.getFile());
           if (directory.exists())
           {
           // Get the list of the files contained in the package
           files = directory.list();
           Arrays.sort(files);
           }
           else
           {
           throw new ClassNotFoundException(strPackageName + " does not appear to be a valid package");
           }
           }
           }
           catch (NullPointerException x)
           {
           throw new ClassNotFoundException(strPackageName + " (" + directory + ") does not appear to be a valid package");
           }
           for (int i = 0; i < files.length; i++)
           {
           // we are only interested in .class files
           if (files.endsWith(".class"))
           {
           // removes the .class extension
           try
           {
           classes.add(Class.forName(strPackageName + '.' + files.substring(0, files.length() - 6)));
           }
           catch (Exception e) {}
           }
           }
          
           Class[] classesA = new Class[classes.size()];
           classes.toArray(classesA);
           return classesA;
           }
          


          • 2. Re: Retrieve retrieve Entity Class mapping from jboss
            Florian Bauer Newbie

            I created a statless Sessionbean as followed:

            @Stateless
            public class BaseSession implements BaseSessionRemote, BaseSessionLocal
            {
            
             @Resource SessionContext context;
             @PersistenceContext(unitName="myName") private EntityManager entityManager;
            
             public Map<String,EntityPersister> getAllClassMetadata()
             {
             Map<String,EntityPersister> metadata = null;
             try
             {
             HibernateEntityManager hibernateEntityManager = (HibernateEntityManager)entityManager.getDelegate();
             metadata = hibernateEntityManager.getSession().getSessionFactory().getAllClassMetadata();
             }
             catch(ClassCastException e)
             {
             LoggerImpl.getInstance().log(Logger.iLOGG_ERROR, this, e);
             metadata = new HashMap<String,EntityPersister>();
             }
             return metadata;
             }
            }
            
            



            and then iterate over all maped entities:



             Map m = myPortalSession.getEntityManager().getAllClassMetadata();
             Set<Map.Entry> s = m.entrySet();
             for (Map.Entry e : s)
             {
             System.out.println(e.getKey() + "--->" + e.getValue());
             }