问题
I'm trying to construct this query using Criteria typesafe API:
select * from xxx_table xxx where CALC_DISTANCE(xxx.latitude, xxx.longitude, :lat, :lng) < :dist
CALC_DISTANCE definded PL/SQL function:
FUNCTION calc_distance(
pLat1 NUMBER,
pLon1 NUMBER,
pLat2 NUMBER,
pLon2 NUMBER)
RETURN NUMBER
CriteriaBuilder builder = JpaHandle.get().getCriteriaBuilder();
CriteriaQuery<XXX> criteria = builder.createQuery(XXX.class);
Root<XXX> xxxRoot = criteria.from(XXX.class);
ParameterExpression<Double> latParam = builder.parameter( Double.class );
ParameterExpression<Double> lngParam = builder.parameter( Double.class );
ParameterExpression<Double> distParam = builder.parameter( Double.class );
Expression<Double> distFunction = builder.function("CALC_DISTANCE", Double.class, xxxRoot.get(XXX_.latitude), xxxRoot.get(XXX_.longitude), latParam, lngParam);
criteria.where(builder.greaterThan(distFunction, distParam));
TypedQuery<XXX> q = em.createQuery(criteria);
q.setParameter(latParam, latitude);
q.setParameter(lngParam, longitude);
q.setParameter(distParam, new Double(distance.toString()));
return q.getResultList();
I get this exception:
Caused by: org.hibernate.QueryException: could not resolve property:
latitudegeneratedAlias0 of: domain.XXX
[select generatedAlias0 from domain.XXX as generatedAlias0 where
CALC_DISTANCE(generatedAlias0.latitudegeneratedAlias0.longitude:param0:param1)>:param2]
Seems like JPA query construction logic forgets to separate params with commas, or do I have somehow to do it myself?
回答1:
It looks like your defined PL/SQL function takes 4 arguments and you only have 2 arguments shown.
来源：https://stackoverflow.com/questions/5820415/jpa-criteria-api-query-with-sql-function-call-which-takes-parameters