org.hibernate.transform
Interface ResultTransformer

All Superinterfaces:
Serializable
All Known Subinterfaces:
TupleSubsetResultTransformer
All Known Implementing Classes:
AbstractEntityManagerImpl.TupleBuilderTransformer, AliasedTupleSubsetResultTransformer, AliasToBeanConstructorResultTransformer, AliasToBeanResultTransformer, AliasToEntityMapResultTransformer, BasicTransformerAdapter, CacheableResultTransformer, DistinctResultTransformer, DistinctRootEntityResultTransformer, PassThroughResultTransformer, RootEntityResultTransformer, ToListResultTransformer

public interface ResultTransformer
extends Serializable

Implementors define a strategy for transforming query results into the actual application-visible query result list.

See Also:
Criteria.setResultTransformer(ResultTransformer), Query.setResultTransformer(ResultTransformer)

Method Summary
 List transformList(List collection)
          Here we have an opportunity to perform transformation on the query result as a whole.
 Object transformTuple(Object[] tuple, String[] aliases)
          Tuples are the elements making up each "row" of the query result.
 

Method Detail

transformTuple

Object 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.

Parameters:
tuple - The result elements
aliases - The result aliases ("parallel" array to tuple)
Returns:
The transformed row.

transformList

List transformList(List collection)
Here we have an opportunity to perform transformation on the query result as a whole. This might be useful to convert from one collection type to another or to remove duplicates from the result, etc.

Parameters:
collection - The result.
Returns:
The transformed result.


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