I have the following 2 methods I’m testing from a DAO:
public List<T> findAll() {
if (logger.isDebugEnabled()) {
logger.debug("findAll");
}
return currentSession().createCriteria(getPersistentClass()).list();
}
public int count() {
if (logger.isDebugEnabled()) {
logger.debug("count");
}
return ((Number) currentSession().createCriteria(getPersistentClass()).
setProjection(Projections.rowCount()).
uniqueResult()).intValue();
}
Test snippet:
@Test
@Transactional(isolation = Isolation.SERIALIZABLE)
public void testFindAll(){
Assert.assertEquals(2566, this.employeeHibernateDAO.findAll().size());
}
@Test
@Transactional(isolation = Isolation.SERIALIZABLE)
public void testCount(){
Assert.assertEquals(2566, this.employeeHibernateDAO.count());
}
There are a total of 2566 entries on the table, and count returns successfully with its count however findAll does not.
Error:
java.lang.AssertionError:
Expected :2566
Actual :0
at org.junit.Assert.fail(Assert.java:91)
at org.junit.Assert.failNotEquals(Assert.java:645)
at org.junit.Assert.assertEquals(Assert.java:126)
at org.junit.Assert.assertEquals(Assert.java:470)
at org.junit.Assert.assertEquals(Assert.java:454)
at com.develop.test.data.dao.EmployeeDAOTest.testFindAll(EmployeeDAOTest.java:53)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:82)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:240)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:180)
at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:71)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:199)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:62)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
So given that error, it is actually returning 0 on that specific method. I cannot figure out why considering count is successful. Any help?
Edit:
SQL for count():
09:56:15.180 [main] DEBUG org.hibernate.SQL -
select
count(*) as y0_
from
EMPLOYEE this_
Hibernate:
select
count(*) as y0_
from
EMPLOYEE this_
SQL for findAll() (employee3 refers to an Updated-By field):
09:56:15.243 [main] DEBUG org.hibernate.SQL -
select
this_.EMP_ID as EMP1_5_2_,
this_.ISACTIVE as ISACTIVE5_2_,
this_.COMPANY_CODE as COMPANY12_5_2_,
this_.CORP_TITLE as CORP3_5_2_,
this_.DEPT_CODE as DEPT13_5_2_,
this_.E_MAIL as E4_5_2_,
this_.EMP_FIRST_NAME as EMP5_5_2_,
this_.HIRE_DATE as HIRE6_5_2_,
this_.JOB_CODE as JOB7_5_2_,
this_.JOB_TITLE_DESC as JOB8_5_2_,
this_.EMP_LAST_NAME as EMP9_5_2_,
this_.MANAGER_ID as MANAGER14_5_2_,
this_.MANAGER_INDC as MANAGER10_5_2_,
this_.EMP_MIDDLE_NAME as EMP11_5_2_,
preference2_.EMP_ID as EMP1_13_0_,
preference2_.UPDATED_BY as UPDATED4_13_0_,
preference2_.UPDATED_DATE as UPDATED2_13_0_,
preference2_.LANGUAGE as LANGUAGE13_0_,
employee3_.EMP_ID as EMP1_5_1_,
employee3_.ISACTIVE as ISACTIVE5_1_,
employee3_.COMPANY_CODE as COMPANY12_5_1_,
employee3_.CORP_TITLE as CORP3_5_1_,
employee3_.DEPT_CODE as DEPT13_5_1_,
employee3_.E_MAIL as E4_5_1_,
employee3_.EMP_FIRST_NAME as EMP5_5_1_,
employee3_.HIRE_DATE as HIRE6_5_1_,
employee3_.JOB_CODE as JOB7_5_1_,
employee3_.JOB_TITLE_DESC as JOB8_5_1_,
employee3_.EMP_LAST_NAME as EMP9_5_1_,
employee3_.MANAGER_ID as MANAGER14_5_1_,
employee3_.MANAGER_INDC as MANAGER10_5_1_,
employee3_.EMP_MIDDLE_NAME as EMP11_5_1_
from
EMPLOYEE this_
inner join
PREFERENCE preference2_
on this_.EMP_ID=preference2_.EMP_ID
left outer join
EMPLOYEE employee3_
on preference2_.UPDATED_BY=employee3_.EMP_ID
Hibernate:
select
this_.EMP_ID as EMP1_5_2_,
this_.ISACTIVE as ISACTIVE5_2_,
this_.COMPANY_CODE as COMPANY12_5_2_,
this_.CORP_TITLE as CORP3_5_2_,
this_.DEPT_CODE as DEPT13_5_2_,
this_.E_MAIL as E4_5_2_,
this_.EMP_FIRST_NAME as EMP5_5_2_,
this_.HIRE_DATE as HIRE6_5_2_,
this_.JOB_CODE as JOB7_5_2_,
this_.JOB_TITLE_DESC as JOB8_5_2_,
this_.EMP_LAST_NAME as EMP9_5_2_,
this_.MANAGER_ID as MANAGER14_5_2_,
this_.MANAGER_INDC as MANAGER10_5_2_,
this_.EMP_MIDDLE_NAME as EMP11_5_2_,
preference2_.EMP_ID as EMP1_13_0_,
preference2_.UPDATED_BY as UPDATED4_13_0_,
preference2_.UPDATED_DATE as UPDATED2_13_0_,
preference2_.LANGUAGE as LANGUAGE13_0_,
employee3_.EMP_ID as EMP1_5_1_,
employee3_.ISACTIVE as ISACTIVE5_1_,
employee3_.COMPANY_CODE as COMPANY12_5_1_,
employee3_.CORP_TITLE as CORP3_5_1_,
employee3_.DEPT_CODE as DEPT13_5_1_,
employee3_.E_MAIL as E4_5_1_,
employee3_.EMP_FIRST_NAME as EMP5_5_1_,
employee3_.HIRE_DATE as HIRE6_5_1_,
employee3_.JOB_CODE as JOB7_5_1_,
employee3_.JOB_TITLE_DESC as JOB8_5_1_,
employee3_.EMP_LAST_NAME as EMP9_5_1_,
employee3_.MANAGER_ID as MANAGER14_5_1_,
employee3_.MANAGER_INDC as MANAGER10_5_1_,
employee3_.EMP_MIDDLE_NAME as EMP11_5_1_
from
EMPLOYEE this_
inner join
PREFERENCE preference2_
on this_.EMP_ID=preference2_.EMP_ID
left outer join
EMPLOYEE employee3_
on preference2_.UPDATED_BY=employee3_.EMP_ID
Is it not conceivable that you actually have zero rows for the joined query? Does the join to
PREFERENCEsucceed?