org.hibernate.transform
Class DistinctResultTransformer

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

All Implemented Interfaces:

java.io.Serializable, ResultTransformer

public class DistinctResultTransformer
extends BasicTransformerAdapter
implements java.io.Serializable

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

static DistinctResultTransformer

INSTANCE

Method Summary

java.util.List

transformList(java.util.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 java.util.List transformList(java.util.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.