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How to set default zero SUM value with Hibernate Projection?

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joarobles

Post subject: How to set default zero SUM value with Hibernate Projection?

Posted: Fri Nov 06, 2015 12:02 pm

Newbie

Joined: Mon Sep 13, 2010 1:08 pm
Posts: 5

I'm currently using Hibernate Criteria to create a summary query with SUM, When there are no values for that SUM I'd like to receive 0 instead of null,

Here's my pojo's code

Code:

public class DetalleLibroMayor {

private Cuenta cuenta;
private BigDecimal debe = BigDecimal.ZERO;
private BigDecimal haber = BigDecimal.ZERO;

And this is the query (just the projection part)

Code:

ProjectionList projection = Projections.projectionList();
projection.add(Projections.property("cuenta").as("cuenta"));
projection.add(Projections.sum("debe").as("debe"));
projection.add(Projections.sum("haber").as("haber"));
projection.add(Projections.groupProperty("cuenta.id"));

criteria.setProjection(projection);
criteria.setResultTransformer(Transformers.aliasToBean(DetalleLibroMayor.class));

Any idea? Thanks

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