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NullPointerException when opening DDL wizard. [message #433708]

Wed, 12 April 2006 20:57

Michael Dick

Messages: 4
Registered: July 2009

Junior Member

Hi all,

I've run into a similar problem to bug report 134825. I noticed that the bug has been closed, but I've tried a clean install and I'm still getting the problem.

Whenever I try to generate DDL from a project I get this exception in the error log :

java.lang.NullPointerException
at org.eclipse.wst.rdb.internal.models.sql.datatypes.impl.Chara cterStringDataTypeImpl.eSet(CharacterStringDataTypeImpl.java :364)
at org.eclipse.dali.db.ddl.OrmDdlGenerator.copyDataType(OrmDdlG enerator.java:384)
at org.eclipse.dali.db.ddl.OrmDdlGenerator.addJoinColumn(OrmDdl Generator.java:345)
at org.eclipse.dali.db.ddl.OrmDdlGenerator.addRefColumns(OrmDdl Generator.java:320)
at org.eclipse.dali.db.ddl.OrmDdlGenerator.createDdl(OrmDdlGene rator.java:225)
at org.eclipse.dali.ui.actions.GenerateDdlAction.execute(Genera teDdlAction.java:28)
at org.eclipse.dali.ui.actions.ProjectAction.execute(ProjectAct ion.java:90)
at org.eclipse.dali.ui.actions.ProjectAction.execute(ProjectAct ion.java:71)
at org.eclipse.dali.ui.actions.ProjectAction.run(ProjectAction. java:63)
at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginActi on.java:246)
at org.eclipse.jface.action.ActionContributionItem.handleWidget Selection(ActionContributionItem.java:538)
at org.eclipse.jface.action.ActionContributionItem.access$2(Act ionContributionItem.java:488)
at org.eclipse.jface.action.ActionContributionItem$5.handleEven t(ActionContributionItem.java:400)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1021)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.ja va:2867)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :2572)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:1699)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:367)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:143)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplicatio n.java:103)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:226)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:376)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:163)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:64)

My environment might be a contributing to the problem, here's what I'm using :

Eclipse : Version: 3.1.2 Build id: M20060118-1600
OS : Ubuntu Linux 2.6.12-10-386
Java : java full version "J2RE 1.5.0 IBM Linux build pxi32dev-20060222 (SR1)"
Dali : dali-N-0.5M1-200603170005.zip
WTP : 1.0.1 ( I can get the full build if needed).

I also have a few third party plugins installed, I can post them if they'll help.

Has anyone else seen this error? Are there any other logs I should look at (I've only looked at the Error Log view in Eclipse).

Thanks in advance for any help you can offer,

Michael Dick

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Re: NullPointerException when opening DDL wizard. [message #433709 is a reply to message #433708]

Wed, 12 April 2006 21:33

Karen Butzke

Messages: 220
Registered: July 2009

Senior Member

Hi Michael,
Could you open a bug against Dali for this problem? It looks like a
different issue than bug 134825. This looks specific to your entities, if
you have a particular entity that you can reproduce this problem with,
please include it in the bug report.

thanks,
Karen

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Re: NullPointerException when opening DDL wizard. [message #433711 is a reply to message #433708]

Wed, 12 April 2006 22:04

Neil Hauge

Messages: 475
Registered: July 2009

Senior Member

Michael,

What type of database are you connected to? The problem might be related
to an unsupported datatype.

Neil

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Re: NullPointerException when opening DDL wizard. [message #433719 is a reply to message #433711]

Thu, 13 April 2006 15:08

Michael Dick

Messages: 4
Registered: July 2009

Junior Member

Neil,

I've only tried with Derby 10.1 and MySQL 4.1. I've switched between the two with no discernible difference in behavior
(maybe I'm looking in the wrong place(s) though).

I opened bug 136658 to report/track the problem.

I think Karen was on to something though - the problem appears to be due to the entities that I'm using.. I'm able to bring
up the wizard with a simple entity, but I get the NPE if I use a more complicated example (stolen from the JPA spec).

I've included the source for the entities in the bug report, I can post it here too if you'd like.

-Mike

Neil Hauge wrote:
> Michael,
>
> What type of database are you connected to? The problem might be related
> to an unsupported datatype.
>
> Neil
>

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Re: NullPointerException when opening DDL wizard. [message #433724 is a reply to message #433719]

Thu, 13 April 2006 19:24

Neil Hauge

Messages: 475
Registered: July 2009

Senior Member

Michael,

It appears that the M-M on DeliveryService is the culprit. Removing that
gets rid of the NPE. DDL gen supports M-M mappings, so we will need to
look into this figure and figure out why this is failing.

Neil

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