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

Class UnaryTransformation

java.lang.Object

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

it.bancaditalia.oss.vtl.impl.transform.UnaryTransformation

All Implemented Interfaces:

Transformation, Serializable

Direct Known Subclasses:

AggregateTransformation, BetweenTransformation, BooleanUnaryTransformation, BracketTransformation, CastTransformation, DatasetUnaryTransformation, InclusionTransformation, IsNullTransformation, NotTransformation, NumericUnaryTransformation, ParenthesesTransformation, RatioToReportTransformation, SimpleAnalyticTransformation, StringUnaryTransformation, StrlenTransformation, TimeAggTransformation, TimeSeriesTransformation

public abstract class UnaryTransformation
extends TransformationImpl

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected Transformation	operand

Constructor Summary

Constructors

Constructor	Description
UnaryTransformation(Transformation operand)

Method Summary

Modifier and Type	Method	Description
Lineage	computeLineage()
protected abstract VTLValueMetadata	computeMetadata(TransformationScheme scheme)
boolean	equals(Object obj)
VTLValue	eval(TransformationScheme scheme)	Evaluates this transformation in the context of the given TransformationScheme.
protected abstract VTLValue	evalOnDataset(DataSet dataset, VTLValueMetadata metadata)
protected abstract VTLValue	evalOnScalar(ScalarValue<?,?,?,?> scalar, VTLValueMetadata metadata)
VTLValueMetadata	getMetadata(TransformationScheme scheme)	Checks and returns the metadata of this Transformation within the given TransformationScheme.
Transformation	getOperand()
Set<LeafTransformation>	getTerminals()	A set of all the LeafTransformations recursively referenced by this Transformation.
int	hashCode()
boolean	isTerminal()

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

getLineage

Methods inherited from class java.lang.Object

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

Field Detail

operand

protected final Transformation operand

Constructor Detail

UnaryTransformation

public UnaryTransformation(Transformation operand)

Method Detail

isTerminal

public final boolean isTerminal()

Returns:

True if this Transformation do not require previous computations before returning a result.

getTerminals

public final Set<LeafTransformation> getTerminals()

Description copied from interface: Transformation

A set of all the LeafTransformations recursively referenced by this Transformation. The set is empty if Transformation.isTerminal() is true.

Returns:

the set

eval

public final VTLValue eval(TransformationScheme scheme)

Description copied from interface: Transformation

Evaluates this transformation in the context of the given TransformationScheme.

Parameters:

scheme - the transformation scheme

Returns:

the result of the computation of this Transformation.

getOperand

public Transformation getOperand()

evalOnScalar

protected abstract VTLValue evalOnScalar(ScalarValue<?,?,?,?> scalar,
                                         VTLValueMetadata metadata)

evalOnDataset

protected abstract VTLValue evalOnDataset(DataSet dataset,
                                          VTLValueMetadata metadata)

getMetadata

public final VTLValueMetadata getMetadata(TransformationScheme scheme)

Description copied from interface: Transformation

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

Parameters:

scheme - the transformation scheme

Returns:

the metadata of this Transformation.

computeMetadata

protected abstract VTLValueMetadata computeMetadata(TransformationScheme scheme)

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