Problem in placing the EJB queries

Hi all,
I am working on the migration of an application from J2EE to SAP WAS.
The original application contains some EJB queries present in the file sun-j2ee-ri.xml.
Entery for one of the query is given below:
<ejb20-cmp>
<sql-statement>
<operation>storeRow</operation>
<sql>UPDATE "UserEJBTable" SET "password" = ? WHERE "userName" = ? </sql>
</sql-statement>
<sql-statement>
<operation>findByPrimaryKey</operation>
<sql>SELECT "userName" FROM "UserEJBTable" WHERE "userName" = ? </sql>
</sql-statement>
</ejb20-cmp>
I cannot understand where(in which file) to make entry for this query.
Please help me out with this problem.

Hi Neethu ..
    can u create one more finderMethod in ur EJB?.
then that will be dislayed in the persistent.xml files.
u can select that findermethod from Query subtab , and write ur own queries there..
                  not sure , u can overwrite the standard finderMethod..
                                  Regards
                                  Kishor Gopinatha

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Hello,
if you NW 04 SP7 or higher, please look this document
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Message was edited by:
user614169
Message was edited by:
user614169

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java.lang.reflect.UndeclaredThrowableException
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 at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
 at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
 at javax.swing.AbstractButton.doClick(AbstractButton.java:302)
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 at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
 at java.awt.Component.processEvent(Component.java:5253)
 at java.awt.Container.processEvent(Container.java:1966)
 at java.awt.Component.dispatchEventImpl(Component.java:3955)
 at java.awt.Container.dispatchEventImpl(Container.java:2024)
 at java.awt.Component.dispatchEvent(Component.java:3803)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
 at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
 at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
 at java.awt.Container.dispatchEventImpl(Container.java:2010)
 at java.awt.Window.dispatchEventImpl(Window.java:1774)
 at java.awt.Component.dispatchEvent(Component.java:3803)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
 at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
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 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
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 at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:383)
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 at javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimensions(BasicTreeUI.java:2693)
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 at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand(VariableHeightLayoutCache.java:1469)
 at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand(VariableHeightLayoutCache.java:1270)
 at javax.swing.tree.VariableHeightLayoutCache.rebuild(VariableHeightLayoutCache.java:725)
 at javax.swing.tree.VariableHeightLayoutCache.setModel(VariableHeightLayoutCache.java:91)
 at javax.swing.plaf.basic.BasicTreeUI.setModel(BasicTreeUI.java:400)
 at javax.swing.plaf.basic.BasicTreeUI$Handler.propertyChange(BasicTreeUI.java:3384)
 at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:333)
 at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:270)
 at java.awt.Component.firePropertyChange(Component.java:7159)
 at javax.swing.JTree.setModel(JTree.java:710)
 at com.sun.rave.ejb.ui.ConfigureMethodsPanel.setEjbGroup(ConfigureMethodsPanel.java:81)
 at com.sun.rave.ejb.ui.ConfigureMethodsPanel.<init>(ConfigureMethodsPanel.java:73)
 at com.sun.rave.ejb.ui.AddEjbGroupDialog$ConfigureMethodWizardPanel.getComponent(AddEjbGroupDialog.java:312)
 at org.openide.WizardDescriptor.updateState(WizardDescriptor.java:577)
 at org.openide.WizardDescriptor.goToNextStep(WizardDescriptor.java:691)
 at org.openide.WizardDescriptor.access$500(WizardDescriptor.java:63)
 at org.openide.WizardDescriptor$Listener.actionPerformed(WizardDescriptor.java:1296)
[catch] ... 69 more
==>
java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:383)
 at $Proxy19.actionPerformed(Unknown Source)
 at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
 at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
 at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
 at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
 at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
 at java.awt.Component.processMouseEvent(Component.java:5488)
 at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
 at java.awt.Component.processEvent(Component.java:5253)
 at java.awt.Container.processEvent(Container.java:1966)
 at java.awt.Component.dispatchEventImpl(Component.java:3955)
 at java.awt.Container.dispatchEventImpl(Container.java:2024)
 at java.awt.Component.dispatchEvent(Component.java:3803)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
 at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
 at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
 at java.awt.Container.dispatchEventImpl(Container.java:2010)
 at java.awt.Window.dispatchEventImpl(Window.java:1774)
 at java.awt.Component.dispatchEvent(Component.java:3803)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
 at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:153)
 at java.awt.Dialog$1.run(Dialog.java:515)
 at java.awt.Dialog.show(Dialog.java:536)
 at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:800)
 at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:843)
 at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:831)
 at org.openide.util.Mutex.doEventAccess(Mutex.java:1044)
 at org.openide.util.Mutex.readAccess(Mutex.java:170)
 at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:816)
 at java.awt.Component.show(Component.java:1300)
 at java.awt.Component.setVisible(Component.java:1253)
 at com.sun.rave.ejb.ui.AddEjbGroupDialog.showDialog(AddEjbGroupDialog.java:94)
 at com.sun.rave.ejb.actions.AddEjbGroupAction.performAction(AddEjbGroupAction.java:40)
 at org.openide.util.actions.NodeAction$3.run(NodeAction.java:450)
 at org.openide.util.actions.CallableSystemAction.doPerformAction(CallableSystemAction.java:116)
 at org.openide.util.actions.NodeAction$DelegateAction.actionPerformed(NodeAction.java:448)
 at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
 at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
 at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
 at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
 at javax.swing.AbstractButton.doClick(AbstractButton.java:302)
 at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1000)
 at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1041)
 at java.awt.Component.processMouseEvent(Component.java:5488)
 at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
 at java.awt.Component.processEvent(Component.java:5253)
 at java.awt.Container.processEvent(Container.java:1966)
 at java.awt.Component.dispatchEventImpl(Component.java:3955)
 at java.awt.Container.dispatchEventImpl(Container.java:2024)
 at java.awt.Component.dispatchEvent(Component.java:3803)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
 at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
 at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
 at java.awt.Container.dispatchEventImpl(Container.java:2010)
 at java.awt.Window.dispatchEventImpl(Window.java:1774)
 at java.awt.Component.dispatchEvent(Component.java:3803)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
 at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
 at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
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 at com.sun.rave.ejb.ui.ConfigureMethodsPanel$1.getTreeCellRendererComponent(ConfigureMethodsPanel.java:56)
 at javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimensions(BasicTreeUI.java:2693)
 at javax.swing.tree.AbstractLayoutCache.getNodeDimensions(AbstractLayoutCache.java:475)
 at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.updatePreferredSize(VariableHeightLayoutCache.java:1342)
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 at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand(VariableHeightLayoutCache.java:1270)
 at javax.swing.tree.VariableHeightLayoutCache.rebuild(VariableHeightLayoutCache.java:725)
 at javax.swing.tree.VariableHeightLayoutCache.setModel(VariableHeightLayoutCache.java:91)
 at javax.swing.plaf.basic.BasicTreeUI.setModel(BasicTreeUI.java:400)
 at javax.swing.plaf.basic.BasicTreeUI$Handler.propertyChange(BasicTreeUI.java:3384)
 at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:333)
 at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:270)
 at java.awt.Component.firePropertyChange(Component.java:7159)
 at javax.swing.JTree.setModel(JTree.java:710)
 at com.sun.rave.ejb.ui.ConfigureMethodsPanel.setEjbGroup(ConfigureMethodsPanel.java:81)
 at com.sun.rave.ejb.ui.ConfigureMethodsPanel.<init>(ConfigureMethodsPanel.java:73)
 at com.sun.rave.ejb.ui.AddEjbGroupDialog$ConfigureMethodWizardPanel.getComponent(AddEjbGroupDialog.java:312)
 at org.openide.WizardDescriptor.updateState(WizardDescriptor.java:577)
 at org.openide.WizardDescriptor.goToNextStep(WizardDescriptor.java:691)
 at org.openide.WizardDescriptor.access$500(WizardDescriptor.java:63)
 at org.openide.WizardDescriptor$Listener.actionPerformed(WizardDescriptor.java:1296)
[catch] ... 69 more
==>
java.lang.ClassCastException: javax.swing.tree.DefaultMutableTreeNode
 at com.sun.rave.ejb.ui.ConfigureMethodsPanel$1.getTreeCellRendererComponent(ConfigureMethodsPanel.java:56)
 at javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimensions(BasicTreeUI.java:2693)
 at javax.swing.tree.AbstractLayoutCache.getNodeDimensions(AbstractLayoutCache.java:475)
 at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.updatePreferredSize(VariableHeightLayoutCache.java:1342)
 at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand(VariableHeightLayoutCache.java:1469)
 at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand(VariableHeightLayoutCache.java:1270)
 at javax.swing.tree.VariableHeightLayoutCache.rebuild(VariableHeightLayoutCache.java:725)
 at javax.swing.tree.VariableHeightLayoutCache.setModel(VariableHeightLayoutCache.java:91)
 at javax.swing.plaf.basic.BasicTreeUI.setModel(BasicTreeUI.java:400)
 at javax.swing.plaf.basic.BasicTreeUI$Handler.propertyChange(BasicTreeUI.java:3384)
 at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:333)
 at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:270)
 at java.awt.Component.firePropertyChange(Component.java:7159)
 at javax.swing.JTree.setModel(JTree.java:710)
 at com.sun.rave.ejb.ui.ConfigureMethodsPanel.setEjbGroup(ConfigureMethodsPanel.java:81)
 at com.sun.rave.ejb.ui.ConfigureMethodsPanel.<init>(ConfigureMethodsPanel.java:73)
 at com.sun.rave.ejb.ui.AddEjbGroupDialog$ConfigureMethodWizardPanel.getComponent(AddEjbGroupDialog.java:312)
 at org.openide.WizardDescriptor.updateState(WizardDescriptor.java:577)
 at org.openide.WizardDescriptor.goToNextStep(WizardDescriptor.java:691)
 at org.openide.WizardDescriptor.access$500(WizardDescriptor.java:63)
 at org.openide.WizardDescriptor$Listener.actionPerformed(WizardDescriptor.java:1296)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:383)
 at $Proxy19.actionPerformed(Unknown Source)
 at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
 at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
 at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
 at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
 at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
 at java.awt.Component.processMouseEvent(Component.java:5488)
 at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
 at java.awt.Component.processEvent(Component.java:5253)
 at java.awt.Container.processEvent(Container.java:1966)
 at java.awt.Component.dispatchEventImpl(Component.java:3955)
 at java.awt.Container.dispatchEventImpl(Container.java:2024)
 at java.awt.Component.dispatchEvent(Component.java:3803)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
 at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
 at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
 at java.awt.Container.dispatchEventImpl(Container.java:2010)
 at java.awt.Window.dispatchEventImpl(Window.java:1774)
 at java.awt.Component.dispatchEvent(Component.java:3803)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
[catch] at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:153)
 at java.awt.Dialog$1.run(Dialog.java:515)
 at java.awt.Dialog.show(Dialog.java:536)
 at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:800)
 at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:843)
 at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:831)
 at org.openide.util.Mutex.doEventAccess(Mutex.java:1044)
 at org.openide.util.Mutex.readAccess(Mutex.java:170)
 at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:816)
 at java.awt.Component.show(Component.java:1300)
 at java.awt.Component.setVisible(Component.java:1253)
 at com.sun.rave.ejb.ui.AddEjbGroupDialog.showDialog(AddEjbGroupDialog.java:94)
 at com.sun.rave.ejb.actions.AddEjbGroupAction.performAction(AddEjbGroupAction.java:40)
 at org.openide.util.actions.NodeAction$3.run(NodeAction.java:450)
 at org.openide.util.actions.CallableSystemAction.doPerformAction(CallableSystemAction.java:116)
 at org.openide.util.actions.NodeAction$DelegateAction.actionPerformed(NodeAction.java:448)
 at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
 at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
 at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
 at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
 at javax.swing.AbstractButton.doClick(AbstractButton.java:302)
 at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1000)
 at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1041)
 at java.awt.Component.processMouseEvent(Component.java:5488)
 at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
 at java.awt.Component.processEvent(Component.java:5253)
 at java.awt.Container.processEvent(Container.java:1966)
 at java.awt.Component.dispatchEventImpl(Component.java:3955)
 at java.awt.Container.dispatchEventImpl(Container.java:2024)
 at java.awt.Component.dispatchEvent(Component.java:3803)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
 at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
 at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
 at java.awt.Container.dispatchEventImpl(Container.java:2010)
 at java.awt.Window.dispatchEventImpl(Window.java:1774)
 at java.awt.Component.dispatchEvent(Component.java:3803)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
 at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
 at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

Hi Eric,
What's the result of Arnav's question?
How did you set it? Please set it as the following steps:
1.Go to Start > Administrative Tools > Task Scheduler
2.In the Task Scheduler window double click your task, and on the "General" tab, under "Security options" section, click the "Change User or Group" button.
4.Make sure "From this location" is set to the local machine name (to change click "Locations" button and select the local computer name)
5.Type "SYSTEM" in the text box and press ok . Under "When running the task, use the following user account:" you should see "NT AUTHORITY\SYSTEM".
Karen Hu
TechNet Community Support

Queries are not getting executed in the EJB

Hi,
I am using Stateless EJB for database transactions. I have one getConnection() method in it which I am calling in every method for connection. I have created one more method in that I am executing one simple query for count(*) from one table and returning the count in the Web dynpro application. But I am not getting the count. It seems the query is not getting executed. I have added classes12 jar externally to the EJB and also to the WebDynpro application. Is there anything I am missing????
Thanks,
Swati Gaur

Hi Swati Gaur,
Did you print any logs in the your code to print the count after executing the query?
For debugging purpose you can try
System.err.println("Count after executing the query "+count);
count is the variable which contains the count after executing the sql query.
Check for the above statement in default trace. If count is printing in default trace then the problem is in your webdynpro code.
Hope this helps!
Regards,
Jaya.

Problem in solving the alias name in queries.

hello
I have an application which utilizes a query to take data from a database table & write to an XML file and vice-versa. I have a problem in solving the alias name in queries.
e.g Select EmpID as EmployeeID from Employee.. Where EmpID is the original Column name in Table, and when i have the result set metadata, i am not able to get the Original Column name EmpID? is there any other way to get it? or it is b'cos of the JDBC driver?
i have tried using:
rsmd.getColumnLabel(int position) ==> gives EmployeeID rsmd.getColumnName(int position) ==> gives EmployeeID and not EmpID
Kindly help.
Thanks

Hi,
When you alias the column, you are giving it a new name to the result set. You can use the metadata to get to the actual column name
ResultSetMetaData rsmd = rs.getMetaData();
String colname = rsmd.getColumnName(i);
Here " i " is the index for the column.
Hope this will help you.
Anil.
Developer Technical Support
Sun Microsystems Inc,
http://www.sun.com/developers/support

I have a problem when i open the ejb-jar.xml

Hi All,
I have a problem when i open the ejb-jar.xml.....
It shows some problem like .....
when Invoking Code plug-in problem :Org.eclipse.jface.
After updating my nwds 3 to 11.
How can i solve this any body help me.
regards
BHI

Maybe try hosting your image on a free image hosting site.

Problem in assigning the execute queue to EJB.

I have a enterprise application in that a have many web application.I want to assign
the low priority threads to one web application e.g. "A". The "A" is using one
ejb to execute the some task.
I am making a execute queue with name let "TestQueue"
and assigning it to my servlet thru these entries in
weblogic-ejb-jar :-
<weblogic-enterprise-bean>
<ejb-name>InferenceEngine</ejb-name>
<reference-descriptor>
<resource-description>
<res-ref-name>jdbc/MyDB</res-ref-name>
<jndi-name>jdbc/MyDB</jndi-name>
</resource-description>
</reference-descriptor>
<jndi-name>ejb/InferenceEngine</jndi-name>
<dispatch-policy>TestQueue</dispatch-policy>
</weblogic-enterprise-bean>
Here is my code of config.xml file for execute queue.
<?xml version="1.0" encoding="UTF-8"?>
<Domain ConfigurationVersion="8.1.0.0" Name="ACM_1">
<Server ListenAddress="" ListenPort="8003" Name="ACM"
NativeIOEnabled="true" ReliableDeliveryPolicy="RMDefaultPolicy" ServerVersion="8.1.1.0">
<SSL Enabled="false" HostnameVerificationIgnored="false"
IdentityAndTrustLocations="KeyStores" Name="ACM"/>
<ExecuteQueue Name="TestQueue" ThreadPriority="1"/>
</Server>
I tried the ejbc command line argument -dispatchPolicy TestQueue also. But it
is also not sending request to my TestQueue.

One thing to note is the execute queue is chosen when the request enters
the server. So if a webapp is assigned to Queue-1 and an ejb to
Queue-2, and the webapp calls the ejb, the request will remain on queue-1.
-- Rob
Sunil Kumar Mehta wrote:
I have a enterprise application in that a have many web application.I want to assign
the low priority threads to one web application e.g. "A". The "A" is using one
ejb to execute the some task.
I am making a execute queue with name let "TestQueue"
and assigning it to my servlet thru these entries in
weblogic-ejb-jar :-
<weblogic-enterprise-bean>
<ejb-name>InferenceEngine</ejb-name>
<reference-descriptor>
<resource-description>
<res-ref-name>jdbc/MyDB</res-ref-name>
<jndi-name>jdbc/MyDB</jndi-name>
</resource-description>
</reference-descriptor>
<jndi-name>ejb/InferenceEngine</jndi-name>
<dispatch-policy>TestQueue</dispatch-policy>
</weblogic-enterprise-bean>
Here is my code of config.xml file for execute queue.
<?xml version="1.0" encoding="UTF-8"?>
<Domain ConfigurationVersion="8.1.0.0" Name="ACM_1">
<Server ListenAddress="" ListenPort="8003" Name="ACM"
NativeIOEnabled="true" ReliableDeliveryPolicy="RMDefaultPolicy" ServerVersion="8.1.1.0">
<SSL Enabled="false" HostnameVerificationIgnored="false"
IdentityAndTrustLocations="KeyStores" Name="ACM"/>
<ExecuteQueue Name="TestQueue" ThreadPriority="1"/>
</Server>
I tried the ejbc command line argument -dispatchPolicy TestQueue also. But it
is also not sending request to my TestQueue.

Having problem access the EJB 3 from Web Component

Hi ,
I have an EJB 3 entity AuctionItem and a session ItemProcessor only implements the local interface IItemProcessor, then I use a servlet to access the findAll method in the ItemProcessor. I've created a Enterprise Applicaiton project to contain the ejb jar and the war file, but after I deploy the ear successfully, I couldn't access to my servlet through http://localhost:8080/AuctionWeb/AuctionServlet, it keeps giving me error like follwoing. Do you know why, your help will be very appreciated !
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
java.lang.NullPointerException
 at web.AuctionServlet.doGet(AuctionServlet.java:43)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
 at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:397)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:278)
 at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
 at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:240)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:179)
 at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
 at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:73)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:182)
 at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
 at com.sun.enterprise.web.VirtualServerPipeline.invoke(VirtualServerPipeline.java:120)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:137)
 at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
 at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:231)
 at com.sun.enterprise.web.connector.grizzly.ProcessorTask.invokeAdapter(ProcessorTask.java:667)
 at com.sun.enterprise.web.connector.grizzly.ProcessorTask.processNonBlocked(ProcessorTask.java:574)
 at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:844)
 at com.sun.enterprise.web.connector.grizzly.ReadTask.executeProcessorTask(ReadTask.java:287)
 at com.sun.enterprise.web.connector.grizzly.ReadTask.doTask(ReadTask.java:212)
 at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:252)
 at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:75)
My code sample:
public class AuctionServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
 @EJB
 private IItemProcessor itemProcessor;
 public AuctionServlet() {
 super();
 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 response.setContentType("text/html;charset=UTF-8");
 PrintWriter out = response.getWriter();
 out.println("<html>");
 out.println("<head>");
 out.println("<title>Servlet AuctionServlet</title>");
 out.println("</head>");
 out.println("<body>");
 out.println("<h1>Servlet AuctionServlet at " + request.getContextPath () + "</h1>");
 List items = itemProcessor.findAll();
 for (Iterator it = items.iterator(); it.hasNext();) {
 AuctionItem elem = (AuctionItem) it.next();
 out.println(" "+elem.getItemid()+" ");
 out.println(elem.getTitle()+" ");
 out.println("</body>");
 out.println("</html>");
.....And the session bean is :
package sessions;
import javax.annotation.Resource;
import javax.ejb.Local;
import javax.ejb.Stateless;
import javax.persistence.*;
import javax.sql.DataSource;
import java.util.List;
import entities.AuctionItem;
@Stateless(name = "ItemProcessor")
public class ItemProcessor implements sessions.IItemProcessor {
 @PersistenceContext
 EntityManager entityManager;
 public Long createItem(String title, Double value, String description,
 String status) {
 AuctionItem item = new AuctionItem();
 item.setTitle(title);
 item.setValue(value);
 item.setDescription(description);
 item.setStatus(status);
 entityManager.persist(item);
 return item.getItemid();
 public String findItemByKey(Long id) {
 AuctionItem item = entityManager.find(AuctionItem.class, id);
 return item.getTitle();
 public List findAll() {
 return entityManager.createQuery("select object(o) from AuctionItem as o").getResultList();
}

The most common reason for this failure is if your web.xml does not refer to the latest web application
.xsd :
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http
://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/x
ml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
Otherwise, the web application is considered to be a J2EE 1.4 application and annotations
are not processed. If that's not the case you can also run the application through the
verifier to see if it identifies any issues.

Problem in placing the EJB queries

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