Wrapper classes

Hola, tengo una duda con las Wrapper classes, �por qu� estas clases a partir de la versi�n 5 (jvm 1.5) aceptan asignaciones directamente?
Por ejemplo:
(jvm 1.5):
Double d = 5.0; (<-- compila)
(jvm 1.4):
Double d = 5.0; (<-- no compila)
Agradecer�a mucho una respuesta (en ingl�s o espa�ol)

Ok ok so I'm the slowest old sod again and everybody
seems to speak Spanish fluently ;-)Un bocadillo de queso y una cervesa por favor.
Trabajo mucho pero gano poco.Y una cerveza grande, Grolsch, por favor. You must've been studying
Spanish at the same school I did ;-)
kind regards,
Jos (y un poco de aceitunas para dos personas ;-)

Similar Messages

  • What is the proper way to code a "wrapper" class?

    Basically I want to replace an existing Action with a custom Action, but I want the custom Action to be able to invoke the existing Action.
    The following code works fine. I can create a custom Action using the existing action and the text on the button "paste-from-clipboard" is taken from the existing Action. So everything works great as long as the existing Action extends from AbstractAction.
    However the Action interface does not support the getKeys() method which I used to copy the key/value information from the existing action to the wrapped action. So if you try to create a button from some class that strictly implements the Action interface the key/value data in the wrapped Action will be empy and no text will appear on the button.
    So as the solution I thought I would need to override all the methods in the wrapped Action class to invoke the methods from the originalAction object. That is why all the commented code in the class is there. But then the protected methods cause a problem as the class won't compile.
    Do I just not worry about overriding those two methods? Is this a general rule when creating wrapper classes, you ignore the protected methods?
    import java.awt.*;
    import java.awt.event.*;
    import java.beans.*;
    import javax.swing.*;
    import javax.swing.text.*;
    public class WrappedAction extends AbstractAction
         private Action originalAction;
         public WrappedAction(JComponent component, KeyStroke keyStroke)
              Object key = getKeyForActionMap(component, keyStroke);
              if (key == null)
                   String message = "no input mapping for KeyStroke: " + keyStroke;
                   throw new IllegalArgumentException(message);
              originalAction = component.getActionMap().get(key);
              if (originalAction == null)
                   String message = "no Action for action key: " + key;
                   throw new IllegalArgumentException(message);
              //  Replace the existing Action with this class
              component.getActionMap().put(key, this);
              //  Copy key/value pairs to
              if (originalAction instanceof AbstractAction)
                   AbstractAction action = (AbstractAction)originalAction;
                   Object[] actionKeys = action.getKeys();
                   for (int i = 0; i < actionKeys.length; i++)
                        String actionKey = actionKeys.toString();
                        putValue(actionKey, action.getValue(actionKey));
         private Object getKeyForActionMap(JComponent component, KeyStroke keyStroke)
              for (int i = 0; i < 3; i++)
              InputMap inputMap = component.getInputMap(i);
              if (inputMap != null)
                        Object key = inputMap.get(keyStroke);
                        if (key != null)
                             return key;
              return null;
         public void invokeOriginalAction(ActionEvent e)
              originalAction.actionPerformed(e);
         public void actionPerformed(ActionEvent e)
              System.out.println("custom code here");
              invokeOriginalAction(e);
         public void addPropertyChangeListener(PropertyChangeListener listener)
              originalAction.addPropertyChangeListener(listener);
         protected Object clone()
              originalAction.clone();
         protected void firePropertyChange(String propertyName, Object oldValue, Object newValue)
              originalAction.firePropertyChange(propertyName, oldValue, newValue);
         public Object[] getKeys()
              return originalAction.getKeys();
         public PropertyChangeListener[] getPropertyChangeListeners()
              return originalAction.getPropertyChangeListeners();
         public Object getValue(String key)
              return originalAction.getValue(key);
         public boolean isEnabled()
              return originalAction.isEnabled();
         public void putValue(String key, Object newValue)
              originalAction.putValue(key, newValue);
         public void removePropertyChangeListener(PropertyChangeListener listener)
              originalAction.removePropertyChangeListener(listener);
         public void setEnabled(boolean newValue)
              originalAction.setEnabled(newValue);
         public static void main(String[] args)
              JTextArea textArea = new JTextArea(5, 30);
              JFrame frame = new JFrame("Wrapped Action");
              frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
              frame.add(new JScrollPane(textArea), BorderLayout.NORTH);
              frame.add(new JButton(new WrappedAction(textArea, KeyStroke.getKeyStroke("control V"))));
              frame.pack();
              frame.setLocationRelativeTo( null );
              frame.setVisible( true );

    I can't get the PropertyChangeListener to fire with any source. Here is my test code. Note I am able to add the PropertyChangeListener to the "Paste Action", but I get no output when I add it to the WrappedAction. I must be missing something basic.
    import java.awt.*;
    import java.awt.event.*;
    import java.beans.*;
    import javax.swing.*;
    import javax.swing.event.*;
    import javax.swing.text.*;
    public class WrappedAction3 implements Action, PropertyChangeListener
         private Action originalAction;
         private SwingPropertyChangeSupport changeSupport;
          *  Replace the default Action for the given KeyStroke with a custom Action
         public WrappedAction3(JComponent component, KeyStroke keyStroke)
              Object actionKey = getKeyForActionMap(component, keyStroke);
              if (actionKey == null)
                   String message = "no input mapping for KeyStroke: " + keyStroke;
                   throw new IllegalArgumentException(message);
              originalAction = component.getActionMap().get(actionKey);
              if (originalAction == null)
                   String message = "no Action for action key: " + actionKey;
                   throw new IllegalArgumentException(message);
              //  Replace the existing Action with this class
              component.getActionMap().put(actionKey, this);
              changeSupport = new SwingPropertyChangeSupport(this);
            originalAction.addPropertyChangeListener(this);
            addPropertyChangeListener(this);
          *  Search the 3 InputMaps to find the KeyStroke binding
         private Object getKeyForActionMap(JComponent component, KeyStroke keyStroke)
              for (int i = 0; i < 3; i++)
                  InputMap inputMap = component.getInputMap(i);
                  if (inputMap != null)
                        Object key = inputMap.get(keyStroke);
                        if (key != null)
                             return key;
              return null;
         public void invokeOriginalAction(ActionEvent e)
              originalAction.actionPerformed(e);
         public void actionPerformed(ActionEvent e)
              System.out.println("actionPerformed");
    //  Delegate the Action interface methods to the original Action
         public Object getValue(String key)
              return originalAction.getValue(key);
         public boolean isEnabled()
              return originalAction.isEnabled();
         public void putValue(String key, Object newValue)
              originalAction.putValue(key, newValue);
         public void setEnabled(boolean newValue)
              originalAction.setEnabled(newValue);
         public void xxxaddPropertyChangeListener(PropertyChangeListener listener)
              originalAction.addPropertyChangeListener(listener);
         public void xxxremovePropertyChangeListener(PropertyChangeListener listener)
              originalAction.removePropertyChangeListener(listener);
         public void addPropertyChangeListener(PropertyChangeListener listener)
            changeSupport.addPropertyChangeListener(listener);
        public void removePropertyChangeListener(PropertyChangeListener listener)
            changeSupport.removePropertyChangeListener(listener);
         public void propertyChange(PropertyChangeEvent evt)
             changeSupport.firePropertyChange(evt.getPropertyName(), evt.getOldValue(), evt.getNewValue());
         public static void main(String[] args)
              JTable table = new JTable(15, 5);
              WrappedAction3 action = new WrappedAction3(table, KeyStroke.getKeyStroke("TAB"));
              action.addPropertyChangeListener( new PropertyChangeListener()
                   public void propertyChange(PropertyChangeEvent e)
                        System.out.println(e.getSource().getClass());
              action.putValue(Action.NAME, "name changed");
              Action paste = new DefaultEditorKit.PasteAction();
              paste.addPropertyChangeListener( new PropertyChangeListener()
                   public void propertyChange(PropertyChangeEvent e)
                        System.out.println(e.getSource().getClass());
              paste.putValue(Action.NAME, "name changed");
    }

  • What are the uses of Void wrapper class?

    Hi,
    Similar to other Wrappers, Void is a wrapper class for the primitive ' void ' . We all know that Void is a final class , we can't instantiate it.
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    thanks,

    kajbj wrote:
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  • Developing the Wrapper class to log the message in XI server

    Hi All,
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    Please suggest how to make to work in XI environment
    Also suggest do I need to do any configurations in SAP web As
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    HI,
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    /people/amjad-ali.khoja/blog/2005/12/16/slaw-a-new-logging-tracing-framework-for-xi
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    /people/community.user/blog/2007/01/09/enterprise-soa-explorations-reflections-on-database-integration
    /people/anne.tarnoruder/blog/2006/10/26/reusing-code-with-pdk-for-net
    /people/piers.harding/blog/2006/05/18/ruby-on-rails-with-ajax
    Regards
    Chilla

  • How to get SDKODBC Wrapper class for indesign cs3

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    Regards,
    saravanan.

    I doubt if change documents are generated for SE78 transaction.
    For list of change documents defined, please check table: TCDOB.
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    Kind Regards
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  • Failed to Generate Wrapper Class Error With Postgresql

    Hello,
    Sorry if this comes across twice, I posted it first through the Google Groups interface, but I haven't seen it show up on the dev2dev forum interface. So here it is again.
    I've read the following threads that seem to be related to this
    question:
    http://groups-beta.google.com/group/weblogic.developer.interest.jdbc/browse_thread/thread/dc8f0a9ee03e9b9f/f0a70a673db3bb52
    http://groups-beta.google.com/group/weblogic.developer.interest.jdbc/browse_thread/thread/4f3b71c77dca30c4/4ed2e1c7b76a0c7b
    I also followed the links in the second post ( I also found them via
    Google as well ). I've been very sure the Postgresql JDBC driver is
    definitely in the class path. I'm able to load it with Class.forName()
    from a JSP page and then use DriverManager to get a connection that
    works. So that definitely means the driver is found.
    What else can cause this?
    The only really odd thing I am doing is running Weblogic on OS X,
    10.3.7 with all the updates. I know that this Weblogic setup works
    since I work on Oracle all day (using the provided Weblogic driver in
    8.1SP3). Just when I try to create a Postgresql connection for testing
    our app against Postgresql.
    I've tried it on Windows with Weblogic 8.1SP3 and it works, so I know
    Weblogic is capable of using this driver.
    My exact stacktrace is:
    java.lang.RuntimeException: Failed to Generate Wrapper Class
    at
    weblogic.utils.wrapper.WrapperFactory.createWrapper(WrapperFactory.java:183)
    at
    weblogic.jdbc.wrapper.JDBCWrapperFactory.getWrapper(JDBCWrapperFactory.java:171)
    at weblogic.jdbc.pool.Driver.allocateConnection(Driver.java:248)
    at weblogic.jdbc.pool.Driver.connect(Driver.java:164)
    at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:507)
    at weblogic.jdbc.jts.Driver.connect(Driver.java:139)
    at
    weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:305)
    at jsp_servlet.__direct._jspService(direct.jsp:13)
    at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
    at
    weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:996)
    at
    weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
    at
    weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:463)
    at
    weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:315)
    at
    weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6452)
    at
    weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at
    weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
    at
    weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3661)
    at
    weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2630)
    at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
    at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)
    at weblogic.jdbc.jts.Driver.wrapAndThrowSQLException(Driver.java:458)
    at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:511)
    at weblogic.jdbc.jts.Driver.connect(Driver.java:139)
    at
    weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:305)
    at jsp_servlet.__direct._jspService(direct.jsp:13)
    at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
    at
    weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:996)
    at
    weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
    at
    weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:463)
    at
    weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:315)
    at
    weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6452)
    at
    weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at
    weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
    at
    weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3661)
    at
    weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2630)
    at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
    at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)
    What is going on at the place where this crashes? Is there a way find
    out what class it really can't find?
    Thanks,
    Patrick

    Patrick,
    1. Could you try to test the postgress connection pool using
    "Test Connection" on the pool set up page?
    2. Could you compare config.xml for broken and working installations
    in part of the connection pool settings?
    Regards,
    Slava Imeshev
    "Patrick Burleson" <[email protected]> wrote in message
    Sorry if this comes across twice, I posted it first through the Google Groups interface, but I haven't seen it show up on thedev2dev forum interface. So here it is again.
    >
    I've read the following threads that seem to be related to this
    question:
    http://groups-beta.google.com/group/weblogic.developer.interest.jdbc/browse_thread/thread/dc8f0a9ee03e9b9f/f0a70a673db3bb52
    http://groups-beta.google.com/group/weblogic.developer.interest.jdbc/browse_thread/thread/4f3b71c77dca30c4/4ed2e1c7b76a0c7b
    I also followed the links in the second post ( I also found them via
    Google as well ). I've been very sure the Postgresql JDBC driver is
    definitely in the class path. I'm able to load it with Class.forName()
    from a JSP page and then use DriverManager to get a connection that
    works. So that definitely means the driver is found.
    What else can cause this?
    The only really odd thing I am doing is running Weblogic on OS X,
    10.3.7 with all the updates. I know that this Weblogic setup works
    since I work on Oracle all day (using the provided Weblogic driver in
    8.1SP3). Just when I try to create a Postgresql connection for testing
    our app against Postgresql.
    I've tried it on Windows with Weblogic 8.1SP3 and it works, so I know
    Weblogic is capable of using this driver.
    My exact stacktrace is:
    java.lang.RuntimeException: Failed to Generate Wrapper Class
    at
    weblogic.utils.wrapper.WrapperFactory.createWrapper(WrapperFactory.java:183)
    at
    weblogic.jdbc.wrapper.JDBCWrapperFactory.getWrapper(JDBCWrapperFactory.java:171)
    at weblogic.jdbc.pool.Driver.allocateConnection(Driver.java:248)
    at weblogic.jdbc.pool.Driver.connect(Driver.java:164)
    at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:507)
    at weblogic.jdbc.jts.Driver.connect(Driver.java:139)
    at
    weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:305)
    at jsp_servlet.__direct._jspService(direct.jsp:13)
    at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
    at
    weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:996)
    at
    weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
    at
    weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:463)
    at
    weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:315)
    at
    weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6452)
    at
    weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at
    weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
    at
    weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3661)
    at
    weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2630)
    at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
    at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)
    at weblogic.jdbc.jts.Driver.wrapAndThrowSQLException(Driver.java:458)
    at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:511)
    at weblogic.jdbc.jts.Driver.connect(Driver.java:139)
    at
    weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:305)
    at jsp_servlet.__direct._jspService(direct.jsp:13)
    at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
    at
    weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:996)
    at
    weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
    at
    weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:463)
    at
    weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:315)
    at
    weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6452)
    at
    weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at
    weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
    at
    weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3661)
    at
    weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2630)
    at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
    at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)
    What is going on at the place where this crashes? Is there a way find
    out what class it really can't find?
    Thanks,
    Patrick

  • What is the advantage of using Wrapper Classes ?

    Hi friends,
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    We are asked to use Wrapper Classes in in Java programs and not the primitive data types. I could not understand the reason.
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    Hi friends,
    I am happy to join Java/J2EE tech. My project is
    scaled over the network. MVC-II struts, EJB based
    architecture, we are using.
    We are asked to use Wrapper Classes in in Java
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  • How to write a wrapper class

    I am new to the concept of wrapper classes. I have a small spell checker program that I need to access via a servlet by passing a string in and getting a string out with spelling suggestions. I could really use some advice on how to write a servlet that would do such a thing. TIA

    grin1dan wrote:
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    An instance of a wrapper class holds a pointer to and instance of some other class or interface and provides access to it, typically supplying methods equivalent to all the methods of the underlying type.
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    When you're passed an object from some code outside your control you often don't know what exact class it is, or have access to it's class definition.
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    As a concrete example, I have a wrapper class LoggedConnection which wraps a java.sql.Connection object. It also implements java.sql.Connection. If you ask a LoggedConnection for a Statement or PreparedStatement it fetches the appropriate object and returns a wrapped version which logs the SQL and the execution times etc..
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  • Advantages and disadvantages of wrapper classes

    Hi ,
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    please do needful ASAP.
    thanks in advance

    Hi Anil,
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    Refer the foll Link:
    http://www.cs.wustl.edu/~schmidt/PDF/Reactor1-93.pdf
    http://whitepapers.silicon.com/0,39024759,60104914p,00.htm
    Regards,
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  • Advantages and disadvantages of wrapper class

    Hi ,
    will you please let me know what are the advantages and disadvantages of wrapper classes.
    please do needful ASAP.
    thanks in advance

    Hi Anil,
    Wrapper classes are classes that allow primitive types to be accessed as objects.
    Refer the foll Link:
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    http://whitepapers.silicon.com/0,39024759,60104914p,00.htm
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  • Failed to Generate Wrapper Class

    Hello,
    I am trying to deploy a cmp ejb (attached here) and I always get the following
    exception. Can anyone please help?
    Julien Martin.
    weblogic.management.DeploymentException:
    Exception:weblogic.management.ApplicationException: activate failed for account-ejb
    Module: account-ejb Error: Exception activating module: EJBModule(account-ejb,status=PREPARED)
    Unable to deploy EJB: AccountEJB from account-ejb.jar:
    Failed to Generate Wrapper Class.
    Nested Exception: java.lang.RuntimeException: Failed to Generate Wrapper Class
    at weblogic.utils.wrapper.WrapperFactory.createWrapper(WrapperFactory.java:141)
    at weblogic.jdbc.wrapper.JDBCWrapperFactory.getWrapper(JDBCWrapperFactory.java:73)
    at weblogic.jdbc.jts.Driver.newConnection(Driver.java:674)
    at weblogic.jdbc.jts.Driver.createLocalConnection(Driver.java:196)
    at weblogic.jdbc.jts.Driver.connect(Driver.java:154)
    at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:298)
    at weblogic.ejb20.cmp.rdbms.RDBMSPersistenceManager.getConnection(RDBMSPersistenceManager.java:1841)
    at weblogic.ejb20.cmp.rdbms.RDBMSPersistenceManager.verifyDatabaseType(RDBMSPersistenceManager.java:2025)
    at weblogic.ejb20.cmp.rdbms.RDBMSPersistenceManager.setup(RDBMSPersistenceManager.java:195)
    at weblogic.ejb20.manager.BaseEntityManager.setupPM(BaseEntityManager.java:217)
    at weblogic.ejb20.manager.BaseEntityManager.setup(BaseEntityManager.java:184)
    at weblogic.ejb20.manager.DBManager.setup(DBManager.java:164)
    at weblogic.ejb20.deployer.ClientDrivenBeanInfoImpl.activate(ClientDrivenBeanInfoImpl.java:1004)
    at weblogic.ejb20.deployer.EJBDeployer.activate(EJBDeployer.java:1322)
    at weblogic.ejb20.deployer.EJBModule.activate(EJBModule.java:610)
    at weblogic.j2ee.J2EEApplicationContainer.activateModule(J2EEApplicationContainer.java:3012)
    at weblogic.j2ee.J2EEApplicationContainer.activate(J2EEApplicationContainer.java:2076)
    at weblogic.j2ee.J2EEApplicationContainer.activate(J2EEApplicationContainer.java:2057)
    at weblogic.management.deploy.slave.SlaveDeployer$ComponentActivateTask.activateContainer(SlaveDeployer.java:2624)
    at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.doCommit(SlaveDeployer.java:2547)
    at weblogic.management.deploy.slave.SlaveDeployer$Task.commit(SlaveDeployer.java:2349)
    at weblogic.management.deploy.slave.SlaveDeployer$Task.checkAutoCommit(SlaveDeployer.java:2431)
    at weblogic.management.deploy.slave.SlaveDeployer$Task.prepare(SlaveDeployer.java:2343)
    at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.prepare(SlaveDeployer.java:2511)
    at weblogic.management.deploy.slave.SlaveDeployer.processPrepareTask(SlaveDeployer.java:833)
    at weblogic.management.deploy.slave.SlaveDeployer.prepareDelta(SlaveDeployer.java:542)
    at weblogic.management.deploy.slave.SlaveDeployer.prepareUpdate(SlaveDeployer.java:500)
    at weblogic.drs.internal.SlaveCallbackHandler$1.execute(SlaveCallbackHandler.java:25)
    at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
    at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
    at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.doCommit(SlaveDeployer.java:2549)
    at weblogic.management.deploy.slave.SlaveDeployer$Task.commit(SlaveDeployer.java:2349)
    at weblogic.management.deploy.slave.SlaveDeployer$Task.checkAutoCommit(SlaveDeployer.java:2431)
    at weblogic.management.deploy.slave.SlaveDeployer$Task.prepare(SlaveDeployer.java:2343)
    at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.prepare(SlaveDeployer.java:2511)
    at weblogic.management.deploy.slave.SlaveDeployer.processPrepareTask(SlaveDeployer.java:833)
    at weblogic.management.deploy.slave.SlaveDeployer.prepareDelta(SlaveDeployer.java:542)
    at weblogic.management.deploy.slave.SlaveDeployer.prepareUpdate(SlaveDeployer.java:500)
    at weblogic.drs.internal.SlaveCallbackHandler$1.execute(SlaveCallbackHandler.java:25)
    at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
    at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
    No Exception Messages
    [account-ejb.jar]

    I would suggest posting in the JDBC newsgroup.
    -- Rob
    Julien Martin wrote:
    Hello,
    I am trying to deploy a cmp ejb (attached here) and I always get the following
    exception. Can anyone please help?
    Julien Martin.
    weblogic.management.DeploymentException:
    Exception:weblogic.management.ApplicationException: activate failed for account-ejb
    Module: account-ejb Error: Exception activating module: EJBModule(account-ejb,status=PREPARED)
    Unable to deploy EJB: AccountEJB from account-ejb.jar:
    Failed to Generate Wrapper Class.
    Nested Exception: java.lang.RuntimeException: Failed to Generate Wrapper Class
    at weblogic.utils.wrapper.WrapperFactory.createWrapper(WrapperFactory.java:141)
    at weblogic.jdbc.wrapper.JDBCWrapperFactory.getWrapper(JDBCWrapperFactory.java:73)
    at weblogic.jdbc.jts.Driver.newConnection(Driver.java:674)
    at weblogic.jdbc.jts.Driver.createLocalConnection(Driver.java:196)
    at weblogic.jdbc.jts.Driver.connect(Driver.java:154)
    at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:298)
    at weblogic.ejb20.cmp.rdbms.RDBMSPersistenceManager.getConnection(RDBMSPersistenceManager.java:1841)
    at weblogic.ejb20.cmp.rdbms.RDBMSPersistenceManager.verifyDatabaseType(RDBMSPersistenceManager.java:2025)
    at weblogic.ejb20.cmp.rdbms.RDBMSPersistenceManager.setup(RDBMSPersistenceManager.java:195)
    at weblogic.ejb20.manager.BaseEntityManager.setupPM(BaseEntityManager.java:217)
    at weblogic.ejb20.manager.BaseEntityManager.setup(BaseEntityManager.java:184)
    at weblogic.ejb20.manager.DBManager.setup(DBManager.java:164)
    at weblogic.ejb20.deployer.ClientDrivenBeanInfoImpl.activate(ClientDrivenBeanInfoImpl.java:1004)
    at weblogic.ejb20.deployer.EJBDeployer.activate(EJBDeployer.java:1322)
    at weblogic.ejb20.deployer.EJBModule.activate(EJBModule.java:610)
    at weblogic.j2ee.J2EEApplicationContainer.activateModule(J2EEApplicationContainer.java:3012)
    at weblogic.j2ee.J2EEApplicationContainer.activate(J2EEApplicationContainer.java:2076)
    at weblogic.j2ee.J2EEApplicationContainer.activate(J2EEApplicationContainer.java:2057)
    at weblogic.management.deploy.slave.SlaveDeployer$ComponentActivateTask.activateContainer(SlaveDeployer.java:2624)
    at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.doCommit(SlaveDeployer.java:2547)
    at weblogic.management.deploy.slave.SlaveDeployer$Task.commit(SlaveDeployer.java:2349)
    at weblogic.management.deploy.slave.SlaveDeployer$Task.checkAutoCommit(SlaveDeployer.java:2431)
    at weblogic.management.deploy.slave.SlaveDeployer$Task.prepare(SlaveDeployer.java:2343)
    at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.prepare(SlaveDeployer.java:2511)
    at weblogic.management.deploy.slave.SlaveDeployer.processPrepareTask(SlaveDeployer.java:833)
    at weblogic.management.deploy.slave.SlaveDeployer.prepareDelta(SlaveDeployer.java:542)
    at weblogic.management.deploy.slave.SlaveDeployer.prepareUpdate(SlaveDeployer.java:500)
    at weblogic.drs.internal.SlaveCallbackHandler$1.execute(SlaveCallbackHandler.java:25)
    at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
    at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
    at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.doCommit(SlaveDeployer.java:2549)
    at weblogic.management.deploy.slave.SlaveDeployer$Task.commit(SlaveDeployer.java:2349)
    at weblogic.management.deploy.slave.SlaveDeployer$Task.checkAutoCommit(SlaveDeployer.java:2431)
    at weblogic.management.deploy.slave.SlaveDeployer$Task.prepare(SlaveDeployer.java:2343)
    at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.prepare(SlaveDeployer.java:2511)
    at weblogic.management.deploy.slave.SlaveDeployer.processPrepareTask(SlaveDeployer.java:833)
    at weblogic.management.deploy.slave.SlaveDeployer.prepareDelta(SlaveDeployer.java:542)
    at weblogic.management.deploy.slave.SlaveDeployer.prepareUpdate(SlaveDeployer.java:500)
    at weblogic.drs.internal.SlaveCallbackHandler$1.execute(SlaveCallbackHandler.java:25)
    at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
    at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
    No Exception Messages

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