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From Andrus Adamchik <and...@objectstyle.org>
Subject Re: Deletion of objects
Date Mon, 26 Nov 2007 11:23:18 GMT
Would be nice to open a Jira with details. We should be able to do  
something about it.

Andrus


On Nov 22, 2007, at 12:43 AM, Jan Lendholt wrote:

> Okay, I found the error - I used a wrong datatype for the  
> matchExpression.
> Well, in fact this is a stupid mistake by me; but in my opinion the  
> framework could handle this more smoothly.
>
> Just told you this nice exception as a illustration on how difficult  
> it could become working with cayenne if one is just a bit hasty on  
> cayennes use.
> I think that hibernate in this context is more reliable; but  
> therefore requires more work to be running at first.
> But dont want to talk about that now.
>
> Greets Jan
>
>
>
>> From: jlendholt@hotmail.com
>> To: user@cayenne.apache.org
>> Subject: RE: Deletion of obejcts
>> Date: Wed, 21 Nov 2007 22:38:34 +0000
>>
>> Hey Kevin,
>>
>> here is one of those exceptions I cannot get used to:
>>
>> java.lang.NullPointerException
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .access 
>> .trans 
>> .QualifierTranslator.appendObjectMatch(QualifierTranslator.java:153)
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .access.trans.QualifierTranslator.endNode(QualifierTranslator.java: 
>> 321)
>>    at org.apache.cayenne.exp.Expression.traverse(Expression.java:520)
>>    at org.apache.cayenne.exp.Expression.traverse(Expression.java:511)
>>    at org.apache.cayenne.exp.Expression.traverse(Expression.java:491)
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .access 
>> .trans.QualifierTranslator.doTranslation(QualifierTranslator.java:74)
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .access 
>> .trans.SelectTranslator.createSqlString(SelectTranslator.java:129)
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .access.trans.QueryAssembler.createStatement(QueryAssembler.java:95)
>>    at  
>> org 
>> .apache 
>> .cayenne.access.jdbc.SelectAction.performAction(SelectAction.java:71)
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .access.DataNodeQueryAction.runQuery(DataNodeQueryAction.java:59)
>>    at  
>> org.apache.cayenne.access.DataNode.performQueries(DataNode.java:273)
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .access.DataDomainQueryAction.runQuery(DataDomainQueryAction.java: 
>> 301)
>>    at org.apache.cayenne.access.DataDomainQueryAction.access 
>> $000(DataDomainQueryAction.java:60)
>>    at org.apache.cayenne.access.DataDomainQueryAction 
>> $1.transform(DataDomainQueryAction.java:273)
>>    at  
>> org 
>> .apache.cayenne.access.DataDomain.runInTransaction(DataDomain.java: 
>> 836)
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .access 
>> .DataDomainQueryAction 
>> .runQueryInTransaction(DataDomainQueryAction.java:270)
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .access.DataDomainQueryAction.execute(DataDomainQueryAction.java:110)
>>    at org.apache.cayenne.access.DataDomain.onQuery(DataDomain.java: 
>> 746)
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .util 
>> .ObjectContextQueryAction.runQuery(ObjectContextQueryAction.java:217)
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .access.DataContextQueryAction.execute(DataContextQueryAction.java: 
>> 54)
>>    at  
>> org.apache.cayenne.access.DataContext.onQuery(DataContext.java:1387)
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .util 
>> .ObjectContextQueryAction.runQuery(ObjectContextQueryAction.java:217)
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .access.DataContextQueryAction.execute(DataContextQueryAction.java: 
>> 54)
>>    at  
>> org.apache.cayenne.access.DataContext.onQuery(DataContext.java:1387)
>>    at  
>> org.apache.cayenne.access.DataContext.performQuery(DataContext.java: 
>> 1376)
>>    at  
>> ams 
>> .maintabpanes 
>> .buchungdetail 
>> .SingleBuchungContentPaneCatering 
>> .<init>(SingleBuchungContentPaneCatering.java:195)
>>    at  
>> ams 
>> .maintabpanes 
>> .buchungdetail 
>> .BuchungDetailWindowPane.<init>(BuchungDetailWindowPane.java:103)
>>    at ams.maintabpanes.event.EventTabPane 
>> $4.actionPerformed(EventTabPane.java:522)
>>    at  
>> nextapp 
>> .echo2 
>> .app.button.AbstractButton.fireActionPerformed(AbstractButton.java: 
>> 135)
>>    at nextapp.echo2.app.button.AbstractButton 
>> $1.actionPerformed(AbstractButton.java:100)
>>    at  
>> nextapp 
>> .echo2 
>> .app 
>> .button 
>> .DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:70)
>>    at  
>> nextapp 
>> .echo2 
>> .app.button.DefaultButtonModel.doAction(DefaultButtonModel.java:58)
>>    at  
>> nextapp 
>> .echo2.app.button.AbstractButton.doAction(AbstractButton.java:121)
>>    at  
>> nextapp 
>> .echo2.app.button.AbstractButton.processInput(AbstractButton.java: 
>> 506)
>>    at  
>> nextapp 
>> .echo2 
>> .app.update.ClientUpdateManager.process(ClientUpdateManager.java:116)
>>    at  
>> nextapp 
>> .echo2 
>> .app.update.UpdateManager.processClientUpdates(UpdateManager.java:89)
>>    at  
>> nextapp 
>> .echo2 
>> .webcontainer 
>> .ContainerSynchronizeService 
>> .renderUpdate(ContainerSynchronizeService.java:472)
>>    at  
>> nextapp 
>> .echo2 
>> .webrender 
>> .service.SynchronizeService.service(SynchronizeService.java:279)
>>    at  
>> nextapp 
>> .echo2.webrender.WebRenderServlet.process(WebRenderServlet.java:276)
>>    at  
>> nextapp 
>> .echo2.webrender.WebRenderServlet.doPost(WebRenderServlet.java:192)
>>    at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
>>    at ams.AMSServlet.service(AMSServlet.java:36)
>>    at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>>    at  
>> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: 
>> 356)
>>    at org.mortbay.jetty.servlet.WebApplicationHandler 
>> $Chain.doFilter(WebApplicationHandler.java:342)
>>    at  
>> org 
>> .apache 
>> .cayenne 
>> .conf 
>> .WebApplicationContextFilter 
>> .doFilter(WebApplicationContextFilter.java:91)
>>    at org.mortbay.jetty.servlet.WebApplicationHandler 
>> $Chain.doFilter(WebApplicationHandler.java:334)
>>    at  
>> org 
>> .mortbay 
>> .jetty 
>> .servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java: 
>> 286)
>>    at  
>> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: 
>> 567)
>>    at org.mortbay.http.HttpContext.handle(HttpContext.java:1776)
>>    at  
>> org 
>> .mortbay 
>> .jetty 
>> .servlet.WebApplicationContext.handle(WebApplicationContext.java:514)
>>    at org.mortbay.http.HttpContext.handle(HttpContext.java:1726)
>>    at org.mortbay.http.HttpServer.service(HttpServer.java:879)
>>    at org.mortbay.http.HttpConnection.service(HttpConnection.java: 
>> 790)
>>    at  
>> org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:952)
>>    at org.mortbay.http.HttpConnection.handle(HttpConnection.java:807)
>>    at  
>> org 
>> .mortbay.http.SocketListener.handleConnection(SocketListener.java: 
>> 196)
>>    at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:289)
>>    at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:487)
>>
>>
>> Well, the only thing I was doing was setting up a select query end  
>> performing the query. I received this.
>>
>> How shall someone solve this issue without having a look into  
>> cayenne's sources?
>> I developed quite a few frameworks for company-internal uses and I  
>> am ALWAYS checking, if all possible exceptions are correctly caught  
>> and at least giving a possible reasong for an exception. For now, I  
>> did not solve the problem but guess, there something wrong in my  
>> statement; but even if: The framework should handle this more  
>> gently telling me where the problem exactly lies.
>>
>> Thanks a lot.
>>
>> Jan
>>
>>
>>> Date: Mon, 19 Nov 2007 20:16:04 -0500
>>> Subject: Re: Deletion of obejcts
>>> From: kmenard@servprise.com
>>> To: user@cayenne.apache.org
>>>
>>> If you're having another issue, please start a new thread and post  
>>> the
>>> relevant code snippets and exception message.  I'll be the first  
>>> to beat up
>>> on Cayenne's error messages, so if you can give concrete examples  
>>> of where
>>> they fail, I'll try to get them fixed for you.
>>>
>>>
>>> On 11/19/07 7:10 PM, "Jan Lendholt" <jlendholt@hotmail.com> wrote:
>>>
>>>> Thanks all for your replies. I will try that one out (deleting an  
>>>> iterator).
>>>>
>>>> but, yet another problem: Ich use an object and say:
>>>> object.removeFromTestArray(Test);
>>>> Afterwards I call Test.getDataContext().commitChanges() to make  
>>>> these changes
>>>> persistent; but all I get is a "Null Objectid" exception which is  
>>>> yet again an
>>>> exception which requires a good overview over cayenne's  
>>>> internals; to me and
>>>> all my people around these error messages cayenne throws are not  
>>>> just a bit
>>>> intuitive :(
>>>>
>>>> _________________________________________________________________
>>>> Neu: Internet Explorer 7 optimiert für MSN!
>>>> http://optimize.de.msn.com/default.aspx?mkt=de-de
>>>
>>> -- 
>>> Kevin Menard
>>> Servprise International, Inc.
>>> Remote reboot & power control for network equipment
>>> www.servprise.com              +1 508.892.3823 x308
>>>
>>
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