Package it.bancaditalia.oss.vtl.impl.transform.aggregation

Class RankTransformation

java.lang.Object

it.bancaditalia.oss.vtl.impl.transform.TransformationImpl

it.bancaditalia.oss.vtl.impl.transform.aggregation.RankTransformation

All Implemented Interfaces:

AnalyticTransformation, LeafTransformation, Transformation, Serializable

public class RankTransformation
extends TransformationImpl
implements AnalyticTransformation, LeafTransformation

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface it.bancaditalia.oss.vtl.impl.transform.aggregation.AnalyticTransformation

AnalyticTransformation.OrderByItem

Constructor Summary

Constructors

Constructor	Description
RankTransformation(List<String> partitionBy, List<AnalyticTransformation.OrderByItem> orderByClause)

Method Summary

Modifier and Type	Method	Description
Lineage	computeLineage()
boolean	equals(Object obj)
VTLValue	eval(TransformationScheme scheme)	Evaluates this transformation in the context of the given TransformationScheme.
DataSetMetadata	getMetadata(TransformationScheme scheme)	Checks and returns the metadata of this Transformation within the given TransformationScheme.
String	getText()
int	hashCode()
String	toString()

Methods inherited from class it.bancaditalia.oss.vtl.impl.transform.TransformationImpl

getLineage

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.bancaditalia.oss.vtl.model.transform.LeafTransformation

getTerminals, isTerminal

Methods inherited from interface it.bancaditalia.oss.vtl.model.transform.Transformation

getLineage

Constructor Detail

RankTransformation

public RankTransformation(List<String> partitionBy,
                          List<AnalyticTransformation.OrderByItem> orderByClause)

Method Detail

eval

public VTLValue eval(TransformationScheme scheme)

Description copied from interface: Transformation

Evaluates this transformation in the context of the given TransformationScheme.

Specified by:

eval in interface Transformation

Parameters:

scheme - the transformation scheme

Returns:

the result of the computation of this Transformation.

getMetadata

public DataSetMetadata getMetadata(TransformationScheme scheme)

Description copied from interface: Transformation

Checks and returns the metadata of this Transformation within the given TransformationScheme.

Specified by:

getMetadata in interface Transformation

Parameters:

scheme - the transformation scheme

Returns:

the metadata of this Transformation.

toString

public String toString()

Overrides:

toString in class Object

getText

public String getText()

Specified by:

getText in interface LeafTransformation

hashCode

public int hashCode()

Specified by:

hashCode in interface Transformation

Specified by:

hashCode in class TransformationImpl

equals

public boolean equals(Object obj)

Specified by:

equals in interface Transformation

Specified by:

equals in class TransformationImpl

computeLineage

public Lineage computeLineage()

Specified by:

computeLineage in class TransformationImpl