org.hibernate.transform
Class DistinctRootEntityResultTransformer

java.lang.Object
  org.hibernate.transform.DistinctRootEntityResultTransformer

All Implemented Interfaces:

java.io.Serializable, ResultTransformer

public class DistinctRootEntityResultTransformer
extends java.lang.Object
implements ResultTransformer, java.io.Serializable

Much like RootEntityResultTransformer, but we also distinct the entity in the final result.

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 DistinctRootEntityResultTransformer INSTANCE

DistinctRootEntityResultTransformer

public DistinctRootEntityResultTransformer()

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

Instantiate a DistinctRootEntityResultTransformer.

todo : make private, see deprecation notice

transformTuple

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

Simply delegates to RootEntityResultTransformer.transformTuple(java.lang.Object[], java.lang.String[]).

Specified by:

transformTuple in interface ResultTransformer

Parameters:

tuple - The tuple to transform

aliases - The tuple aliases

Returns:

The transformed tuple row.

transformList

public java.util.List transformList(java.util.List list)

Simply delegates to DistinctResultTransformer.transformList(java.util.List).

Specified by:

transformList in interface ResultTransformer

Parameters:

list - The list to transform.

Returns:

The transformed List.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object