org.hibernate.transform
Class DistinctResultTransformer

java.lang.Object
  extended by org.hibernate.transform.BasicTransformerAdapter
      extended by org.hibernate.transform.DistinctResultTransformer
All Implemented Interfaces:
Serializable, ResultTransformer

public class DistinctResultTransformer
extends BasicTransformerAdapter
implements 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
 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.


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