I have a class that is persisting a Entity that holds remarks and a time.
Then when I query for the latest remark I get a internal error when the remark is larger than 1966 chars.
Here is a test class and entity that reproduces the problem on my system.
@Entity
@Table(name = "TestEntity", schema = "mySchema")
public class TestEntity
{
@Id
private int id;
@Basic
@Lob
private String remark;
@Basic
@Temporal(value = TemporalType.TIMESTAMP)
private Date changeDate;
public int getId()
{
return id;
}
public void setId(int id)
{
this.id = id;
}
public String getRemark()
{
return remark;
}
public void setRemark(String remark)
{
this.remark = remark;
}
public Date getChangeDate()
{
return changeDate;
}
public void setChangeDate(Date changeDate)
{
this.changeDate = changeDate;
}
}
public class Test
{
private final EntityManagerFactory emf;
private final EntityManager em;
public Test()
{
emf = Persistence.createEntityManagerFactory("$objectdb/db/test.odb");
em = emf.createEntityManager();
}
public static void main(String[] args)
{
Test t = new Test();
t.doit();
}
public void doit()
{
for(int i=1;i<32766;i++)
{
em.getTransaction().begin();
TestEntity v = em.find(TestEntity.class, i);
if(v==null)
{
v = new TestEntity();
v.setId(i);
em.persist(v);
}
StringBuffer sb = new StringBuffer();
for(int j=0;j<=i;j++)
{
sb.append("X");
}
String sbs = sb.toString();
v.setRemark(sbs);
v.setChangeDate(new Date(System.currentTimeMillis()));
em.getTransaction().commit();
em.getTransaction().begin();
CriteriaBuilder cb = em.getCriteriaBuilder();
CriteriaQuery<Object> q = cb.createQuery();
Root r = q.from(TestEntity.class);
Path c = r.get("changeDate");
Expression me = cb.max(c);
CriteriaQuery<Object> s = q.select(me);
Predicate predicate = cb.isNotNull(c);
q.where(predicate);
TypedQuery<Object> tq = em.createQuery(s);
Date mDate = (Date)tq.getSingleResult();
em.getTransaction().commit();
System.out.println("MaxDate = "+mDate+" i="+i);
}
}
}
The Error output is
MaxDate = Sun Apr 24 00:49:47 EDT 2011 i=1962 MaxDate = Sun Apr 24 00:49:47 EDT 2011 i=1963 MaxDate = Sun Apr 24 00:49:47 EDT 2011 i=1964 MaxDate = Sun Apr 24 00:49:47 EDT 2011 i=1965 MaxDate = Sun Apr 24 00:49:47 EDT 2011 i=1966 MaxDate = Sun Apr 24 00:49:47 EDT 2011 i=1967 Exception in thread "main" [ObjectDB 2.2.2] Unexpected exception (Error 990) Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_24 (on Linux 2.6.32-71.24.1.el6.x86_64). Please report this error on http://www.objectdb.com/database/issue/new com.objectdb.o.InternalException: null com.objectdb.o.InternalException at com.objectdb.o.BYR.s(BYR.java:113) at com.objectdb.o.BYR.J(BYR.java:353) at com.objectdb.o.VUT.k(VUT.java:545) at com.objectdb.o.REG.D(REG.java:339) at com.objectdb.o.EXR$d.c(EXR.java:131) at com.objectdb.o.VAR.an(VAR.java:769) at com.objectdb.o.VAR.am(VAR.java:712) at com.objectdb.o.BCN.y(BCN.java:282) at com.objectdb.o.BCN.i(BCN.java:251) at com.objectdb.o.PBI.A(PBI.java:141) at com.objectdb.o.PBI.p(PBI.java:111) at com.objectdb.o.OBI.U5(OBI.java:235) at com.objectdb.o.BQI.Ve(BQI.java:134) at com.objectdb.o.GQI.Us(GQI.java:130) at com.objectdb.o.PRG.aa(PRG.java:584) at com.objectdb.o.QRM.UR(QRM.java:256) at com.objectdb.o.MST.UR(MST.java:878) at com.objectdb.o.WRA.UR(WRA.java:286) at com.objectdb.o.WSM.UR(WSM.java:113) at com.objectdb.o.WRA.UR(WRA.java:286) at com.objectdb.o.WSN.UR(WSN.java:422) at com.objectdb.o.QRR.g(QRR.java:216) at com.objectdb.o.QRR.b(QRR.java:139) at com.objectdb.jpa.JpaQuery.getSingleResult(JpaQuery.java:607) at com.ibm.check.cmvc2git.Test.doit(Test.java:69) at com.ibm.check.cmvc2git.Test.main(Test.java:30)
This brigns up the question, what is the size limit for a persisted @Lob String in objectDB?
