Package org.hibernate.query

Interface TupleTransformer<T>

All Known Subinterfaces:

ResultTransformer<T>, TypedTupleTransformer<T>

All Known Implementing Classes:

AliasToBeanConstructorResultTransformer, AliasToBeanResultTransformer, AliasToEntityMapResultTransformer, NativeQueryConstructorTransformer, NativeQueryListTransformer, NativeQueryMapTransformer, NativeQueryTupleTransformer, ToListResultTransformer

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@Incubating
@FunctionalInterface
public interface TupleTransformer<T>

Defines some transformation applied to each result of a Query before the results are packaged as a List and returned to the caller. Each result is received as a tuple (that is, as an Object[]), and may be transformed to some other type.

See Also:

• Query.setTupleTransformer(org.hibernate.query.TupleTransformer<T>)
• Query.list()
• Query.getResultList()
• ResultListTransformer
• RowTransformer

Implementation Note:

Every TupleTransformer is automatically wrapped in an instance of RowTransformerTupleTransformerAdapter, adapting it to the RowTransformer contract, which is always used to actually process the results internally.

Method Summary

Modifier and Type	Method	Description
T	transformTuple(Object[] tuple, String[] aliases)	Tuples are the elements making up each "row" of the query result.

Method Details

transformTuple

T transformTuple(Object[] tuple,
 String[] aliases)

Tuples are the elements making up each "row" of the query result. The contract here is to transform these elements into the final row shape.

Parameters:

tuple - The result elements

aliases - The result aliases ("parallel" array to tuple)

Returns:

The transformed row.