Hi all,
I have this sorted...turns out a different bundle/jar was exporting my
dao code. Once I fixed the bundle exports, the NPE went away.
Sorry for the noise.
Regards,
Jason
On 12/12/2016 12:23 PM, Jason Reilly wrote:
Hi all,
I am using OpenJPA 2.4.1 in Karaf and am seeing a NPE thrown...here is
stacktrace:
java.lang.NullPointerException
at
org.apache.openjpa.persistence.criteria.PathImpl.get(PathImpl.java:245)
at
org.renci.binning.dao.jpa.clinbin.DiagnosticBinningJobDAOImpl.findByExample(DiagnosticBinningJobDAOImpl.java:145)
That line in PathImpl is as follows:
if (getType()!= attr.getDeclaringType()) {
I am fairly sure that the "attr" is null as I have a check for that in
my "DiagnosticBinningJobDAOImpl.findByExample" method. Here is snippet:
Join<DiagnosticBinningJob, DX>
diagnosticBinningJobDXJoin = root.join(DiagnosticBinningJob_.dx);
logger.info("is join null: {}",
diagnosticBinningJobDXJoin == null);
logger.info("is expression null: {}",
diagnosticBinningJobDXJoin.get(DX_.id));
The last line there throws the NPE & I never see the log message, "is
expression null". When I run this from within my editor as a JUnit
test case, the exception is not thrown. I think this has something to
do with the class enhancing. Yet, during the build, I see that the DX
class is enhanced without issue:
837 binning INFO [main] openjpa.Tool - Enhancer running on type
"class org.renci.binning.dao.clinbin.model.DX".
Could this be due to an incorrect dependency version? Like maybe and
old version of serp or asm? Any other possible explanations?
Thanks,
Jason
