org.hibernate.transform
Class AliasToEntityMapResultTransformer

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

All Implemented Interfaces:

Serializable, ResultTransformer

public class AliasToEntityMapResultTransformer
extends BasicTransformerAdapter
implements Serializable

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 (this is not quite true yet, see deprecation notice on constructor).

Author:

Gavin King, Steve Ebersole

See Also:

Serialized Form

Field Summary

static AliasToEntityMapResultTransformer

INSTANCE

Constructor Summary

AliasToEntityMapResultTransformer()
Deprecated. Use the INSTANCE reference instead of explicitly creating a new one (to be removed in 3.4).

Method Summary

boolean	equals(Object other) All AliasToEntityMapResultTransformer are considered equal
int	hashCode() All AliasToEntityMapResultTransformer are considered equal
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.

Methods inherited from class org.hibernate.transform.BasicTransformerAdapter

transformList

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final AliasToEntityMapResultTransformer INSTANCE

Constructor Detail

AliasToEntityMapResultTransformer

public AliasToEntityMapResultTransformer()

Deprecated. Use the INSTANCE reference instead of explicitly creating a new one (to be removed in 3.4).

Instantiate AliasToEntityMapResultTransformer.

todo : make private, see deprecation...

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.

equals

public boolean equals(Object other)

All AliasToEntityMapResultTransformer are considered equal

Overrides:

equals in class Object

Parameters:

other - The other instance to check for equality

Returns:

True if (non-null) other is a instance of AliasToEntityMapResultTransformer.

hashCode

public int hashCode()

All AliasToEntityMapResultTransformer are considered equal

Overrides:

hashCode in class Object

Returns:

We simply return the hashCode of the AliasToEntityMapResultTransformer class name string.