org.hibernate.transform
Class AliasToEntityMapResultTransformer

java.lang.Object
  org.hibernate.transform.BasicTransformerAdapter
      org.hibernate.transform.AliasedTupleSubsetResultTransformer
          org.hibernate.transform.AliasToEntityMapResultTransformer

All Implemented Interfaces:

Serializable, ResultTransformer, TupleSubsetResultTransformer

public class AliasToEntityMapResultTransformer
extends AliasedTupleSubsetResultTransformer

ResultTransformer implementation which builds a map for each "row", made up of each aliased value where the alias is the map key.

Since this transformer is stateless, all instances would be considered equal. So for optimization purposes we limit it to a single, singleton instance.

See Also:

Serialized Form

Field Summary

static AliasToEntityMapResultTransformer

INSTANCE

Method Summary

boolean	isTransformedValueATupleElement(String[] aliases, int tupleLength) When a tuple is transformed, is the result a single element of the tuple?
Object	transformTuple(Object[] tuple, String[] aliases) Tuples are the elements making up each "row" of the query result.

Methods inherited from class org.hibernate.transform.AliasedTupleSubsetResultTransformer

includeInTransform

Methods inherited from class org.hibernate.transform.BasicTransformerAdapter

transformList

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.hibernate.transform.ResultTransformer

transformList

Field Detail

INSTANCE

public static final AliasToEntityMapResultTransformer INSTANCE

Method Detail

transformTuple

public 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.

Specified by:

transformTuple in interface ResultTransformer

Overrides:

transformTuple in class BasicTransformerAdapter

Parameters:

tuple - The result elements

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

Returns:

The transformed row.

isTransformedValueATupleElement

public boolean isTransformedValueATupleElement(String[] aliases,
                                               int tupleLength)

When a tuple is transformed, is the result a single element of the tuple?

Parameters:

aliases - - the aliases that correspond to the tuple

tupleLength - - the number of elements in the tuple

Returns:

true, if the transformed value is a single element of the tuple; false, otherwise.