org.hibernate.transform

Class DistinctResultTransformer

java.lang.Object

org.hibernate.transform.BasicTransformerAdapter

org.hibernate.transform.DistinctResultTransformer

All Implemented Interfaces:

Serializable, ResultTransformer

public class DistinctResultTransformer
extends BasicTransformerAdapter

Distinctions the result tuples in the final result based on the defined equality of the tuples.

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

Author:

Steve Ebersole

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static DistinctResultTransformer	INSTANCE

Method Summary

Modifier and Type	Method and Description
List	transformList(List list) Uniquely distinct each tuple row here.

Methods inherited from class org.hibernate.transform.BasicTransformerAdapter

transformTuple

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final DistinctResultTransformer INSTANCE

Method Detail

transformList

public List transformList(List list)

Uniquely distinct each tuple row here.

Specified by:

transformList in interface ResultTransformer

Overrides:

transformList in class BasicTransformerAdapter

Parameters:

list - The result.

Returns:

The transformed result.