程序包 org.hibernate.transform

类 RootEntityResultTransformer

java.lang.Object

org.hibernate.transform.BasicTransformerAdapter

org.hibernate.transform.RootEntityResultTransformer

所有已实现的接口:

Serializable, ResultTransformer, TupleSubsetResultTransformer

public final class RootEntityResultTransformer
extends BasicTransformerAdapter
implements TupleSubsetResultTransformer

ResultTransformer implementation which limits the result tuple to only the "root entity".

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

作者:

Gavin King, Steve Ebersole

另请参阅:

序列化表格

字段概要

字段

修饰符和类型	字段	说明
static RootEntityResultTransformer	INSTANCE

方法概要

修饰符和类型	方法	说明
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.

从类继承的方法 org.hibernate.transform.BasicTransformerAdapter

transformList

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.hibernate.transform.ResultTransformer

transformList

字段详细资料

INSTANCE

public static final RootEntityResultTransformer INSTANCE

方法详细资料

transformTuple

public Object transformTuple(Object[] tuple,
                             String[] aliases)

Return just the root entity from the row tuple.

指定者:

transformTuple 在接口中 ResultTransformer

覆盖:

transformTuple 在类中 BasicTransformerAdapter

参数:

tuple - The result elements

aliases - The result aliases ("parallel" array to tuple)

返回:

The transformed row.

isTransformedValueATupleElement

public boolean isTransformedValueATupleElement(String[] aliases,
                                               int tupleLength)

从接口复制的说明: TupleSubsetResultTransformer

When a tuple is transformed, is the result a single element of the tuple?

指定者:

isTransformedValueATupleElement 在接口中 TupleSubsetResultTransformer

参数:

aliases - - the aliases that correspond to the tuple

tupleLength - - the number of elements in the tuple

返回:

true, if the transformed value is a single element of the tuple; false, otherwise.

includeInTransform

public boolean[] includeInTransform(String[] aliases,
                                    int tupleLength)

从接口复制的说明: TupleSubsetResultTransformer

Returns an array with the i-th element indicating whether the i-th element of the tuple is included in the transformed value.

指定者:

includeInTransform 在接口中 TupleSubsetResultTransformer

参数:

aliases - - the aliases that correspond to the tuple

tupleLength - - the number of elements in the tuple

返回:

array with the i-th element indicating whether the i-th element of the tuple is included in the transformed value.