org.hibernate.transform
Class AliasToEntityMapResultTransformer

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

All Implemented Interfaces:

java.io.Serializable, ResultTransformer

public class AliasToEntityMapResultTransformer
extends BasicTransformerAdapter
implements java.io.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

INSTANCE

public static final AliasToEntityMapResultTransformer INSTANCE

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...

transformTuple

public java.lang.Object transformTuple(java.lang.Object[] tuple,
                                       java.lang.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(java.lang.Object other)

All AliasToEntityMapResultTransformer are considered equal

Overrides:

equals in class java.lang.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 java.lang.Object

Returns:

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