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Posted to dev@openjpa.apache.org by "Jacek Laskowski (JIRA)" <ji...@apache.org> on 2007/04/10 16:05:32 UTC
[jira] Created: (OPENJPA-212) Constructor expression permits no
other expressions in SELECT clause
Constructor expression permits no other expressions in SELECT clause
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Key: OPENJPA-212
URL: https://issues.apache.org/jira/browse/OPENJPA-212
Project: OpenJPA
Issue Type: Bug
Components: query
Affects Versions: 0.9.7
Reporter: Jacek Laskowski
It seems that it's impossible to run a query with constructor expression beside other expressions in SELECT clause. Take a look at the following test that finishes with ClassCastException when the first element of resultQuery is returned (the 2nd line of the snippet). Am I doing something plain wrong?
It doesn't work with Hibernate EntityManager 3.3.1, either yet TopLink Essentials 2.0 BUILD 40 runs fine.
Query query = em.createQuery("SELECT NEW pl.jaceklaskowski.jpa.PewnaKlasa(p.nazwa, o.imie, o.nazwisko, o.numer), o, p.nazwa FROM Projekt p JOIN p.chair o");
List<Object[]> resultQuery = query.getResultList();
final Object[] firstElementInQueryResult = resultQuery.get(0);
assert firstElementInQueryResult.length == 3;
final Object firstElement = resultQuery.get(0)[0];
assert firstElement instanceof PewnaKlasa;
final Object secondElement = resultQuery.get(0)[1];
assert secondElement instanceof Osoba;
final Object thirdElement = resultQuery.get(0)[2];
assert thirdElement instanceof String;
The exception is as follows (the line number is different though as the test above is incomplete - no class, imports and alike are shown):
java.lang.ClassCastException: pl.jaceklaskowski.jpa.PewnaKlasa
at pl.jaceklaskowski.jpa.OpenJPATest.testConstructorExpr(OpenJPATest.java:19)
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[jira] Commented: (OPENJPA-212) Constructor expression permits no
other expressions in SELECT clause
Posted by "Patrick Linskey (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12487948 ]
Patrick Linskey commented on OPENJPA-212:
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You don't have a test case handy for this by any chance, do you?
> Constructor expression permits no other expressions in SELECT clause
> --------------------------------------------------------------------
>
> Key: OPENJPA-212
> URL: https://issues.apache.org/jira/browse/OPENJPA-212
> Project: OpenJPA
> Issue Type: Bug
> Components: query
> Affects Versions: 0.9.7
> Reporter: Jacek Laskowski
>
> It seems that it's impossible to run a query with constructor expression beside other expressions in SELECT clause. Take a look at the following test that finishes with ClassCastException when the first element of resultQuery is returned (the 2nd line of the snippet). Am I doing something plain wrong?
> It doesn't work with Hibernate EntityManager 3.3.1, either yet TopLink Essentials 2.0 BUILD 40 runs fine.
> Query query = em.createQuery("SELECT NEW pl.jaceklaskowski.jpa.PewnaKlasa(p.nazwa, o.imie, o.nazwisko, o.numer), o, p.nazwa FROM Projekt p JOIN p.chair o");
> List<Object[]> resultQuery = query.getResultList();
> final Object[] firstElementInQueryResult = resultQuery.get(0);
> assert firstElementInQueryResult.length == 3;
> final Object firstElement = resultQuery.get(0)[0];
> assert firstElement instanceof PewnaKlasa;
> final Object secondElement = resultQuery.get(0)[1];
> assert secondElement instanceof Osoba;
> final Object thirdElement = resultQuery.get(0)[2];
> assert thirdElement instanceof String;
> The exception is as follows (the line number is different though as the test above is incomplete - no class, imports and alike are shown):
> java.lang.ClassCastException: pl.jaceklaskowski.jpa.PewnaKlasa
> at pl.jaceklaskowski.jpa.OpenJPATest.testConstructorExpr(OpenJPATest.java:19)
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