ClassCastException: java.util.Date cannot be cast to

Question

I am using service in CUBA-FRAMEWORK to do some data manipulation and getting the following error:

ClassCastException: java.util.Date cannot be cast to com.company.gms.entity.ProductionPlanResource

the error is originated in the following line of code:

matReqDate = DateUtils.addDays((Date)planQuery.getFirstResult().getStartDate(), daysOffset);
                                            }

additional codes around :

    Date reqShipDate = soline.getRequiredShipDate();
                                                Date matReqDate;
                                                TypedQuery<ProductionPlanResource> planQuery = persistence.getEntityManager()
                                                        .createQuery("select MIN(e.startDate) from mydb$ProductionPlanResource e " +
                                                                " where e.productionPlan.salesOrder.id = ?1 AND e.article.id = ?2", ProductionPlanResource.class);
                                                        planQuery.setParameter(1, soline.getSalesOrder().getId()).setParameter(2, article.getId());

                                                if (planQuery.getResultList().size() > 0) {

                                                    matReqDate = DateUtils.addDays((Date)planQuery.getFirstResult().getStartDate(), daysOffset);
                                                }

I tried this, but didn't help

java.sql.Date startDate = (java.sql.Date)planQuery.getFirstResult().getStartDate();

Thanks for helping.

What is the type of planQuery.getFirstResult().getStartDate() ? Is it a java.util.Date ? or a java.sql.Date ?. Can you print getClass().getName() and see what is output ? — Ramachandran.A.G
– Ramachandran.A.G, Commented Aug 30, 2016 at 7:52

Henry · Accepted Answer · 2016-08-30 07:58:39Z

1

Your TypedQuery is expected to return a ProductionPlanResource but looking at the query itself, it gives back MIN(e.startDate) which seems to be a date instead of a ProductionPlanResource.

answered Aug 30, 2016 at 7:58

Henry

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Tobias Otto · Accepted Answer · 2016-08-30 07:59:55Z

1

The exception tells You that there is a Date which is cast to ProductionPlanResource. That is the problem.

TypedQuery<ProductionPlanResource> planQuery =  ...
...select MIN(e.startDate) from ...

The result is a Date and the TypedQuery is for type ProductionPlanResource.

Try change to:

TypedQuery<Date> planQuery

answered Aug 30, 2016 at 7:59

Tobias Otto

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BuckRogers · Accepted Answer · 2016-08-30 07:48:34Z

0

You could try to .getTime() and then convert, since long value is read by both, java and sql date.

answered Aug 30, 2016 at 7:48

BuckRogers

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