Hibernate List warning;

Question

I have the following code on my Hibernate class:

public List<Something> getSomethingList(Integer[] ls){
    String sql = "FROM SOMETHING WHERE IDSOMETHING IN (:ls)";

    return this.getSession().createQuery(sql).setParameterList("ls", ls).list();
}

I Have an warning on the return line. The warning is the following:

Type safety: The expression of type List needs unchecked conversion to conform to List<Something>

I know this is not a big issue but how can I solve this warning?

Thanks

Possible duplicate http://stackoverflow.com/questions/115692/how-to-avoid-type-safety-warnings-with-hibernate-hql-results — Bitmap, Apr 27 '12 at 20:59

score 1 · Accepted Answer · edited Apr 28 '12 at 08:21

1

First Option: THIS:

 List<Permission> permissions = Collections.checkedList(Permission.class, this.getSession().createQuery(sql).setParameterList("ls", ls).list());

Should be like this:

List<Permission> permissions = Collections.checkedList(this.getSession().createQuery(sql).setParameterList("ls", ls).list(),Permission.class);

Second Option:

Use:

  @SuppressWarnings("unchecked")

Personally, I like the second option.

edited Apr 28 '12 at 08:21

thathashd

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answered Apr 27 '12 at 21:02

danny.lesnik

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The exact duplicate hold the answer as posted. – Bitmap Apr 27 '12 at 21:08
@danny.lesnik This is wrong. Look the modifications I did to your samples. – thathashd Apr 27 '12 at 23:49
@fegol, Yes you are right, the position is different, Thank you. – danny.lesnik Apr 28 '12 at 08:23

score 0 · Answer 2 · answered Dec 01 '17 at 06:04

Prevent Eclipse from generating warnings for unavoidable problems

In Eclipse, go to Window>Preferences>Java>Compiler>Errors/Warnings and under Generic type, select the checkbox
Ignore unavoidable generic type problems due to raw APIs

This will turn off unnecessary warnings for similar problems like the one described above which are unavoidable.

Hibernate List warning;

2 Answers2