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I use JPA 1.0:

Query query;
            query = em.createNamedQuery("getThresholdParameters");
            query.setParameter(1, Integer.parseInt(circleId));

            List<Object[]> resultList = new ArrayList();
            resultList  = query.getResultList();

Here I get result as List<Object[]>, thus I have to type convert all the parameters of the row to their respective types which is cumbersome.

In JPA 2.0 there is TypedQuery which return an entity object of type one specifies.

But as I am using JPA 1 I can't use it.

How to get result as Entity object of type I want??

EDIT: QUERY

@Entity
@Table(name="GMA_THRESHOLD_PARAMETERS")
@NamedQuery(

        name = "getThresholdParameters",

        query = "select gmaTh.minNumberOc, gmaTh.minDurationOc, gmaTh.maxNumberIc, gmaTh.maxDurationIc, gmaTh.maxNumberCellId,"
                + "gmaTh.distinctBnumberRatio, gmaTh.minPercentDistinctBnumber from GmaThresholdParameter gmaTh " 
                + "where gmaTh.id.circleId=?1 AND gmaTh.id.tspId=?2 AND gmaTh.id.flag=?3 "
        )
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1 Answer

Your query selects many fields. Such a query always returns a list of Object arrays. If you want a list containing instances of your GmaThresholdParameter entity, then the query should be

select gmaTh from GmaThresholdParameter gmaTh 
where gmaTh.id.circleId=?1 AND gmaTh.id.tspId=?2 AND gmaTh.id.flag=?3

The code to get the list of entities would then be

List<GmaThresholdParameter> resultList = query.getResultList();

You'll get a type safety warning from the compiler, that you can ignore.


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