Question

Why does this query work normal:

Query query = session.createQuery("from Table tab");

And this query:

Query query = session
  .createQuery("select tab.col1, tab.col2, tab.col3 from Table tab");

And that’s what I’m doing with both queries:

dataList = query.list();
for (Table item : dataList)
{
  System.out.println(item.getCol1();
}

reports:

java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to table.Table
at test.TestCriteria.main(TestCriteria.java:35)

Could you help?

Table is normally mapped in entity bean and all the columns are correct.

Answer 1

I believe in the second query, the result is a List<Object[]>:

Object[] row = (Object[]) dataList.get(i);
Object col1Value = row[0];
Object col2Value = row[1];
Object col3Value = row[2];

I have this guess observing Ljava.lang.Object; in the exception trace.