if you are building from src, use the jar-debug target so we get some line numbers
then resubmit the stack trace.
thanks!
-----Original Message-----
From: Robert S. Sfeir [mailto:[EMAIL PROTECTED]]
Sent: Sun 2/16/2003 12:27 PM
To: OJB Users List
Cc:
Subject: Re: Enhancement request before 1.0
Hey Thomas,
Yes OQL.
Here is the exception:
ava.lang.NullPointerException
at org.apache.ojb.odmg.oql.OQLQueryImpl.create(Unknown Source)
at org.apache.ojb.odmg.oql.OQLQueryImpl.create(Unknown Source)
at
com.lawton.data.ojb.HomeDAOImpl.updateHome(HomeDAOImpl.java:187)
at
com.lawton.actions.EditHomeAction.executeAction(EditHomeAction.java:81)
at
com.codepuccino.framework.BaseAction.execute(BaseAction.java:62)
at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestPr
ocessor.java:465)
at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:
274)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1422)
at
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:523)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:247)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:193)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.java:243)
at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:566)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
72)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.java:190)
at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:566)
at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.ja
va:246)
at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:564)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
72)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:234
7)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:180)
at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:566)
at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherVa
lve.java:170)
at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:564)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:170)
at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:564)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468
)
at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:564)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
72)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:174)
at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja
va:566)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4
72)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.j
ava:1027)
at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:
1125)
at java.lang.Thread.run(Thread.java:554)
Easy to reproduce, just take out the space before the word where:
"select home from " + HomeBO.class.getName() + "where homeID = $1";
instead of:
"select home from " + HomeBO.class.getName() + " where homeID = $1";
As you can see the exception doesn't tell me much except that something
is null... :-(
Thanks
R
On Sunday, Feb 16, 2003, at 11:56 US/Eastern, Thomas Mahler wrote:
> Hi Robert,
>
>
> Your are talking about an OQL query.create(..) ?
> It could be difficult to change the behaviour, as the parser used to
> build up the Criteria object from the query string is generated from a
> OQL grammar file.
>
> Could you please post a stacktrace? Maybe I can see clearer then.
>
> It won't be a problem to get this into 1.0 once we know what to fix...
>
> cheers,
> Thomas
>
> Robert S. Sfeir wrote:
>> Hi,
>> Been working my way through OJB, and ran into this issue once and
>> though won't do it again probably, it would be good if there was a
>> better exception thrown for it. The issue is that I wrote my query
>> like this:
>> String sql = "select homes from " + HomeBO.class.getName();
>> sql += "where name = $1";
>> At first glance things look ok, but they're not, there is no space
>> before the where. Now we all write code fast and miss little things
>> like that. The issue I have is that the error thrown is a
>> NullPointerException. In my mind I was thinking maybe the value of
>> $1 was null and that's why it was throwing that, thereby sending me
>> into a witch hunt, whereas in fact the issue is that
>> HomeBO.class.getName() + where does not translate into the proper
>> class name.
>> Since the exception is thrown when I do query.create(sql) It would be
>> much better if the error thrown was a ClassNotFoundException, plus
>> the class name, instead of an NPE. Is that possible to get? This
>> way if the String of the class name printed to the error line returns
>> as com.codepuccino.data.ojb.HomeImplwhere we know immediately that we
>> missed a space somewhere.
>> Thanks
>> R
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>
>
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