167 words

Issue #310 - Null pointer exception being thrown from within ObjectDB.

BugVersion: 1.04Priority: NormalStatus: ActiveReplies: 1
#1
2017-10-03 09:36

EXCEPTION/DESCRIPTION:
------------------------------

[ObjectDB 2.7.1] Unexpected exception (Error 990)

  Generated by Java HotSpot(TM) 64-Bit Server VM 1.8.0_92 (on Windows 10 10.0).
Please report this error on http://www.objectdb.com/database/issue/new
com.objectdb.o.InternalException: java.lang.NullPointerException: null
java.lang.NullPointerException
at com.objectdb.o.VAR.S(VAR.java:297)
at com.objectdb.o.VAR.R(VAR.java:259)
at com.objectdb.o.VAR.aq(VAR.java:637)
at com.objectdb.o.QNF.C(QNF.java:1102)
at com.objectdb.o.QNF.C(QNF.java:996)
at com.objectdb.o.QNF.z(QNF.java:788)
at com.objectdb.o.QNF.k(QNF.java:257)
at com.objectdb.o.QNF.j(QNF.java:134)
at com.objectdb.o.QRC.I(QRC.java:582)
at com.objectdb.o.QRC.z(QRC.java:239)
at com.objectdb.o.QRC.y(QRC.java:188)
at com.objectdb.o.QRM.U9(QRM.java:272)
at com.objectdb.o.MST.U9(MST.java:988)
at com.objectdb.o.WRA.U9(WRA.java:311)
at com.objectdb.o.WSM.U9(WSM.java:115)
at com.objectdb.o.QRR.g(QRR.java:247)
at com.objectdb.o.QRR.f(QRR.java:153)
at com.objectdb.jpa.JpaQuery.getResultList(JpaQuery.java:719)
at za.co.synthesis.regulatory.report.persist.highavailability.ObjectDBTablePersist.readFromSyncpoint(ObjectDBTablePersist.java:95)
at za.co.synthesis.regulatory.report.persist.highavailability.HATable.synchronise(HATable.java:63)
at za.co.synthesis.regulatory.report.persist.highavailability.service.HASync.runHASynchronise(HASync.java:266)
at za.co.synthesis.regulatory.report.support.HousekeepingProcess.runDataSync(HousekeepingProcess.java:67)
at za.co.synthesis.regulatory.report.support.HousekeepingProcess.run(HousekeepingProcess.java:84)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

 

SOURCE CODE:
-----------------

...
CriteriaBuilder cb = entityManager.getCriteriaBuilder();
    CriteriaQuery<ReportDownloadObject> q = cb.createQuery(ReportDownloadObject.class);
    Root<ReportDownloadObject> r = q.from(ReportDownloadObject.class);
    q.select(r).
            where(
              cb.and(
                cb.equal(r.get("reportSpace"), reportSpace),
                cb.gt(r.get("objectDbId"), DataLogic.parseLongDef(fromSyncPoint, 0L))
              )
            ).
            orderBy(cb.desc(r.get("objectDbId")));
    TypedQuery<ReportDownloadObject> query = entityManager.createQuery(q);
    List<ReportDownloadObject> reportDownloadObjects = null;
    try {
 
<span style="background-color:#00ff00;">/*  *****POINT OF FAILURE***** */</span>
      reportDownloadObjects = <span style="color:#fff0f5;"><span style="background-color:#ff0000;">query.setMaxResults(maxRecords).getResultList();</span></span>
...

 

Screenshots attached for database explorer.  Please note that the "ReportObject" object doesn't seem to write to the database and when trying to view the ReportObject list, the explorer "hangs".

za.eckhardt
za.eckhardt's picture
Joined on 2017-10-02
User Post #1
#2
2017-10-03 12:46

More information is needed regarding ReportDownloadObject and related types.

If possible, please provide a simple test case (preferred format is specified here) or a sample database with a query that can demonstrate the exception (e.g. by running the query in the Explorer).

ObjectDB Support
ObjectDB - Fast Object Database for Java (JPA/JDO)
support
support's picture
Joined on 2010-05-03
User Post #2,827

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