public final class RootEntityResultTransformer extends BasicTransformerAdapter implements TupleSubsetResultTransformer
ResultTransformer
implementation which limits the result tuple
to only the "root entity".
<p/>
Since this transformer is stateless, all instances would be considered equal.
So for optimization purposes we limit it to a single, singleton instance
.
Modifier and Type | Field and Description |
---|---|
static RootEntityResultTransformer |
INSTANCE |
Modifier and Type | Method and Description |
---|---|
boolean[] |
includeInTransform(String[] aliases,
int tupleLength)
Returns an array with the i-th element indicating whether the i-th
element of the tuple is included in the transformed value.
|
boolean |
isTransformedValueATupleElement(String[] aliases,
int tupleLength)
When a tuple is transformed, is the result a single element of the tuple?
|
Object |
transformTuple(Object[] tuple,
String[] aliases)
Return just the root entity from the row tuple.
|
transformList
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
transformList
public static final RootEntityResultTransformer INSTANCE
public Object transformTuple(Object[] tuple, String[] aliases)
Return just the root entity from the row tuple.
transformTuple
in interface ResultTransformer
transformTuple
in class BasicTransformerAdapter
tuple
- The result elementsaliases
- The result aliases ("parallel" array to tuple)public boolean isTransformedValueATupleElement(String[] aliases, int tupleLength)
TupleSubsetResultTransformer
When a tuple is transformed, is the result a single element of the tuple?
isTransformedValueATupleElement
in interface TupleSubsetResultTransformer
aliases
- - the aliases that correspond to the tupletupleLength
- - the number of elements in the tuplepublic boolean[] includeInTransform(String[] aliases, int tupleLength)
TupleSubsetResultTransformer
Returns an array with the i-th element indicating whether the i-th element of the tuple is included in the transformed value.
includeInTransform
in interface TupleSubsetResultTransformer
aliases
- - the aliases that correspond to the tupletupleLength
- - the number of elements in the tupleCopyright © 2001-2018 Red Hat, Inc. All Rights Reserved.