No on the XML artifacts (dont use that side of castor for this
program). Also, my hierarchy looks something like this.
System1
System2 extends System1
System3 extends System1
Thats all there is to it. System3 has some dependent objects attached
directly to it, but other then that they are pretty straight forward.
Here are the mapping headers for each class:
<class name="com.vort.ads.beans.Project" identity="id">
<map-to table="prjinfo" />
<field name="id" type="integer">
<sql name="id" type="integer" />
</field>
.....
<!-- These are the child poly classes -->
<field name="stdSystems" type="com.vort.ads.beans.StdSystem"
collection="collection">
<sql many-key="projectNumber"/>
</field>
</class
<class name="com.vort.ads.beans.StdSystem"
identity="id"
key-generator="IDENTITY">
<map-to table="prjstddims"/>
<field name="id" type="integer">
<sql name="id" type="integer"/>
</field>
<!-- When I go to load the project, it gives me the errors -->
<field name="project" type="com.vort.ads.beans.Project" required="true">
<sql name="projectNumber" />
</field>
.....
</class>
<class name="com.sw360.adp.stormfilter.beans.StormFilter"
identity="id"
extends="com.vort.ads.beans.StdSystem">
<cache-type type="count-limited" capacity="30"/>
<map-to table="prjsfdims" />
<field name="id" type="integer">
<sql name="id"/>
</field>
....
</class>
<class name="com.vort.ads.vortechs.beans.VortechsDims"
identity="id"
extends="com.vort.ads.beans.StdSystem">
<cache-type type="count-limited" capacity="30"/>
<map-to table="prjdims" />
<field name="id" type="integer">
<sql name="id" type="integer" />
</field>
....
</class>
Its strange, because like I said, before I got rid of the extra/old
fields in the prjdims table. After that it started throwing the NPE
exception when I was trying to load the project.
Thanks! -Nick
On 8/9/05, Werner Guttmann <[EMAIL PROTECTED]> wrote:
> Nick,
>
> could it be that you've got fields that are mapped to an XML artefact
> but not to Castor JDO ?
>
> Werner
>
> Nick Stuart wrote:
> > Ok, going through doing refactoring to test out the polymorphism
> > support and such and came accross another bug (i think).
> >
> > Anyways, good news first! Poly worked great when I only had one subclass!
> > =)
> >
> > Now bad news, when I added another subclass things seem to have borked
> > on object load time. If my datasets are all empty I can create the
> > classes/objects fine, no errors or nothing. BUT when I go to load the
> > classes from the database I get a NPE with the following trace:
> >
> > java.lang.NullPointerException
> > at
> > org.exolab.castor.jdo.engine.SQLEngine.calculateNumberOfFields(SQLEngine.java:1400)
> > at org.exolab.castor.jdo.engine.SQLEngine.load(SQLEngine.java:1194)
> > at
> > org.exolab.castor.persist.ClassMolder.loadFields(ClassMolder.java:741)
> > at org.exolab.castor.persist.ClassMolder.load(ClassMolder.java:792)
> > at org.exolab.castor.persist.LockEngine.load(LockEngine.java:368)
> > at
> > org.castor.persist.TransactionContext.load(TransactionContext.java:713)
> > at
> > org.castor.persist.TransactionContext.load(TransactionContext.java:550)
> > at org.exolab.castor.persist.ClassMolder.load(ClassMolder.java:932)
> > at org.exolab.castor.persist.LockEngine.load(LockEngine.java:368)
> > at
> > org.castor.persist.TransactionContext.load(TransactionContext.java:713)
> > at
> > org.castor.persist.TransactionContext.load(TransactionContext.java:550)
> > at
> > org.exolab.castor.jdo.engine.DatabaseImpl.load(DatabaseImpl.java:345)
> > at
> > org.exolab.castor.jdo.engine.DatabaseImpl.load(DatabaseImpl.java:312)
> >
> > I ran the query that caster spits out from logging and the fields of
> > the opposite class I am loading are all NULL (which makes sense), but
> > I dont know if this has anything to do with it or not.
> >
> > I'm not sure what I can do to provide any more info on this. This was
> > all working at one point, but then I got rid of the extra fields in
> > one of my database tables during refactoring and things busted. :(
> > But none of those fields should have even been affecting anything, and
> > like I said, I can create objects just fine!
> >
> > Any ideas on whats going on?
> > Thanks!
> > -Nick
> >
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> >
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