Hi Jeff,
From the lines in the stack trace, looks like context.getObjectStore().getDataRowCache() returns null, causing an NPE downstream. Now wondering why that can happen... Are you serializaing/deserializaing your DataContext?
Andrus
On Oct 6, 2010, at 9:04 PM, Rorison, Jeff wrote:
> I am using 3.0 (final) and am having some issues using
> context.createFromDataRow(...)
>
> ObjectResolver is throwing an NPE on what looks like updating snapshots.
>
>
>
> Code:
>
> SQLTemplate template = .....
>
> template.setFetchingDataRows(true);
>
> ...
>
> List res = this.dataContext.performQuery(template);
>
> Subject sub = (Subject)context.objectFromDataRow(Subject.class,
> (DataRow)res.get(0), true);
>
>
>
> Err:
>
> java.lang.NullPointerException
>
> at
> org.apache.cayenne.access.ObjectResolver.objectsFromDataRows(ObjectResol
> ver.java:117)
>
> at
> org.apache.cayenne.access.ObjectResolver.synchronizedObjectsFromDataRows
> (ObjectResolver.java:94)
>
> at
> org.apache.cayenne.access.DataContext.objectsFromDataRows(DataContext.ja
> va:597)
>
> at
> org.apache.cayenne.access.DataContext.objectFromDataRow(DataContext.java
> :646)
>
> ...........
>
>
>
> What, if anything am I doing incorrectly here? I have tried changing the
> refresh, and most of the other API calls with no success?
>
> Has this changed any in 3.0, as I see a few differences between the API
> and the docs?
>
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