Failed to invoke end componentFailed to invoke methodSQL Exception

Question

Hi!
I have upgraded a web service from 8.1 to 9.2.3. However, I have gotten the attached runtime error. Could you please advise me how to resolve it? Thanks a lot.
Best Regards
May
In the Weblogic server 9.2.3, a datasource called JNDIDataSource has been created by using latest JTDS version (i.e. jtds-1.2.4.jar) with the following setting:
- Database Type = MS SQL Server
- Database Driver = Other
- JNDI Name: MSSQLDS
- DriverName: net.sourceforge.jtds.jdbc.Driver
In SampleOnlineDB.java
@org.apache.beehive.controls.api.bean.ControlExtension
@JdbcControl.ConnectionDataSource(jndiName = "MSSQLDS")
public interface SampleOnlineDB extends JdbcControl
// Sample database function. Uncomment to use
// static public class Customer
// public int id;
// public String name;
// * @jc:sql statement="SELECT ID, NAME FROM CUSTOMERS WHERE ID = {id}"
// Customer findCustomer(int id);
// Add "throws SQLException" to request that SQLExeptions be thrown on errors.
static final long serialVersionUID = 1L;
* @jc:sql statement::
* IF (select top 1 rtrim(ltrim(ipaddress)) from ipaddress ) is null
* BEGIN
*      SELECT 'Y'
* END
* ELSE
* BEGIN
*      SELECT 'N'
* END::
//Return 'Y' if the table is empty, else return 'N'
@JdbcControl.SQL(statement = "IF (select top 1 rtrim(ltrim(ipaddress)) from ipaddress ) is null BEGIN \tSELECT 'Y' END ELSE BEGIN \tSELECT 'N' END")
public String isIPAddressTableEmpty();
==========================================================
Here is the runtime error:
Failed to invoke end componentFailed to invoke methodSQL Exception while attempting to connect to database. java.sql.SQLException: null. Nested Exception: java.lang.NullPointerException at weblogic.jdbc.jts.Driver.createLocalConnection(Driver.java:342) at weblogic.jdbc.jts.Driver.connect(Driver.java:181) at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:359) at org.apache.beehive.controls.system.jdbc.JdbcControlImpl.getConnectionFromDataSource(JdbcControlImpl.java:412) at org.apache.beehive.controls.system.jdbc.JdbcControlImpl.getConnection(JdbcControlImpl.java:164) at org.apache.beehive.controls.system.jdbc.JdbcControlImpl.onAquire(JdbcControlImpl.java:111) at org.apache.beehive.controls.system.jdbc.JdbcControlImplInitializer$_resourceContextResourceEventsEventAdaptor.onAcquire(JdbcControlImplInitializer.java:27) at org.apache.beehive.controls.runtime.bean.ResourceContextImpl.acquire(ResourceContextImpl.java:126) at org.apache.beehive.controls.runtime.bean.ResourceContextImpl.preInvoke(ResourceContextImpl.java:110) at org.apache.beehive.controls.runtime.bean.ControlBean.preInvoke(ControlBean.java:411) at org.apache.beehive.controls.runtime.bean.ControlBean.preInvoke(ControlBean.java:424) at database.SampleOnlineDBBean.isIPAddressTableEmpty(SampleOnlineDBBean.java:125) at webservice.AccessOnline.getCountry(AccessOnline.java:98) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at weblogic.wsee.component.pojo.JavaClassComponent.invoke(JavaClassComponent.java:99) at weblogic.wsee.ws.dispatch.server.ComponentHandler.handleRequest(ComponentHandler.java:64) at weblogic.wsee.handler.HandlerIterator.handleRequest(HandlerIterator.java:127) at weblogic.wsee.ws.dispatch.server.ServerDispatcher.dispatch(ServerDispatcher.java:85) at weblogic.wsee.ws.WsSkel.invoke(WsSkel.java:80) at weblogic.wsee.server.servlet.SoapProcessor.handlePost(SoapProcessor.java:66) at weblogic.wsee.server.servlet.SoapProcessor.process(SoapProcessor.java:44) at weblogic.wsee.server.servlet.BaseWSServlet$AuthorizedInvoke.run(BaseWSServlet.java:181) at weblogic.wsee.server.servlet.BaseWSServlet.service(BaseWSServlet.java:92) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)

Answer 1

This is a very convinient feature of Weblogic startup service - if your class
does not implement T3StartupDef it will look for (using introspection)
public static void main(String[] args) in your startup class, and, if it is
there it will execute it.
Ricky Wong <[email protected]> wrote:
It works, many thanks !
However I still have one more question out of my head - I found that my
startup class doesn't need to implement the T3StartupDef and it still
works, however my shutdown class must implement the T3ShutdownDef
(otherwise I'll get ClassCastException).
In article <[email protected]>, [email protected] says...
Most likely the HubDevicePool does not have a public default constructor.
Ricky Wong <[email protected]> wrote:
In what situation I'll get the error "Failed to invoke startup/shutdown
class" as below :
java.lang.InstantiationException:
dsb/eBanking/backOffice/connect/HubDevicePool
at java.lang.Class.newInstance0(Native Method)
at java.lang.Class.newInstance(Compiled Code)
at weblogic.t3.srvr.StartupThread.runStartup
(StartupThread.java:180)
at weblogic.t3.srvr.StartupThread.doWork(Compiled Code)
at weblogic.t3.srvr.PropertyExecuteThread.run
(PropertyExecuteThread.java:62)
I'm pretty sure that the class HubDevicePool has been coded (e.g.
implement T3xxxDef interface, with either the startup() or shutdown()
method) properly as I've another startup classes which work perfectly.
The class has been compiled without error, but it just cannot run when I
put it as either a startup or shutdown class for WebLogic.Dimitri
Dimitri