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org.hibernate.transform

public Class AliasToEntityMapResultTransformer

extends AliasedTupleSubsetResultTransformer
Class Inheritance
Imports
java.util.HashMap, .Map
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.

Authors
Gavin King, Steve Ebersole

Field Summary

Modifier and TypeField and Description
public static final AliasToEntityMapResultTransformer
INSTANCE

Constructor Summary

AccessConstructor and Description
private
AliasToEntityMapResultTransformer()

Disallow instantiation of AliasToEntityMapResultTransformer.

Method Summary

Modifier and TypeMethod and Description
public boolean
isTransformedValueATupleElement(String[]
- the aliases that correspond to the tuple
aliases, int
- the number of elements in the tuple
tupleLength)

Implements org.hibernate.transform.TupleSubsetResultTransformer.isTransformedValueATupleElement.

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

Returns:

The singleton instance : INSTANCE
readResolve()

Serialization hook for ensuring singleton uniqueing.

public Object
transformTuple(Object[]
The result elements
tuple, String[]
The result aliases ("parallel" array to tuple)
aliases)

Overrides org.hibernate.transform.BasicTransformerAdapter.transformTuple.

Implements org.hibernate.transform.ResultTransformer.transformTuple.

Tuples are the elements making up each "row" of the query result.
Inherited from org.hibernate.transform.AliasedTupleSubsetResultTransformer:
includeInTransform

Field Detail

INSTANCEback to summary
public static final AliasToEntityMapResultTransformer INSTANCE

Constructor Detail

AliasToEntityMapResultTransformerback to summary
private AliasToEntityMapResultTransformer()

Disallow instantiation of AliasToEntityMapResultTransformer.

Method Detail

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

Implements org.hibernate.transform.TupleSubsetResultTransformer.isTransformedValueATupleElement.

Doc from org.hibernate.transform.TupleSubsetResultTransformer.isTransformedValueATupleElement.

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

Parameters
aliases:String[]

- the aliases that correspond to the tuple

tupleLength:int

- the number of elements in the tuple

Returns:boolean

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

Annotations
@Override
readResolveback to summary
private Object readResolve()

Serialization hook for ensuring singleton uniqueing.

Returns:Object

The singleton instance : INSTANCE

transformTupleback to summary
public Object transformTuple(Object[] tuple, String[] aliases)

Overrides org.hibernate.transform.BasicTransformerAdapter.transformTuple.

Implements org.hibernate.transform.ResultTransformer.transformTuple.

Doc from org.hibernate.transform.ResultTransformer.transformTuple.

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:Object[]

The result elements

aliases:String[]

The result aliases ("parallel" array to tuple)

Returns:Object

The transformed row.

Annotations
@Override