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

Class BinaryTransformation

java.lang.Object

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

it.bancaditalia.oss.vtl.impl.transform.BinaryTransformation

All Implemented Interfaces:

Transformation, Serializable

Direct Known Subclasses:

ArithmeticTransformation, BooleanTransformation, ComparisonTransformation, ConcatTransformation, ExistsInTransformation, MatchTransformation

public abstract class BinaryTransformation
extends TransformationImpl

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
BinaryTransformation(Transformation left, Transformation right)

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.
protected abstract VTLValue	evalDatasetWithScalar(VTLValueMetadata metadata, boolean datasetIsLeftOp, DataSet dataset, ScalarValue<?,?,?,?> scalar)
protected abstract VTLValue	evalTwoDatasets(VTLValueMetadata metadata, DataSet left, DataSet right)
protected abstract VTLValue	evalTwoScalars(VTLValueMetadata metadata, ScalarValue<?,?,?,?> left, ScalarValue<?,?,?,?> right)
Transformation	getLeftOperand()
VTLValueMetadata	getMetadata(TransformationScheme scheme)	Checks and returns the metadata of this Transformation within the given TransformationScheme.
protected abstract VTLValueMetadata	getMetadataDatasetWithScalar(boolean datasetIsLeftOp, DataSetMetadata dataset, ScalarValueMetadata<?,?> scalar)
protected abstract VTLValueMetadata	getMetadataTwoDatasets(DataSetMetadata left, DataSetMetadata right)
protected abstract VTLValueMetadata	getMetadataTwoScalars(ScalarValueMetadata<?,?> left, ScalarValueMetadata<?,?> right)
Transformation	getRightOperand()
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

Constructor Detail

BinaryTransformation

public BinaryTransformation(Transformation left,
                            Transformation right)

Method Detail

isTerminal

public boolean isTerminal()

Returns:

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

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.

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.

evalTwoScalars

protected abstract VTLValue evalTwoScalars(VTLValueMetadata metadata,
                                           ScalarValue<?,?,?,?> left,
                                           ScalarValue<?,?,?,?> right)

evalDatasetWithScalar

protected abstract VTLValue evalDatasetWithScalar(VTLValueMetadata metadata,
                                                  boolean datasetIsLeftOp,
                                                  DataSet dataset,
                                                  ScalarValue<?,?,?,?> scalar)

evalTwoDatasets

protected abstract VTLValue evalTwoDatasets(VTLValueMetadata metadata,
                                            DataSet left,
                                            DataSet right)

getMetadataTwoScalars

protected abstract VTLValueMetadata getMetadataTwoScalars(ScalarValueMetadata<?,?> left,
                                                          ScalarValueMetadata<?,?> right)

getMetadataDatasetWithScalar

protected abstract VTLValueMetadata getMetadataDatasetWithScalar(boolean datasetIsLeftOp,
                                                                 DataSetMetadata dataset,
                                                                 ScalarValueMetadata<?,?> scalar)

getMetadataTwoDatasets

protected abstract VTLValueMetadata getMetadataTwoDatasets(DataSetMetadata left,
                                                           DataSetMetadata right)

getTerminals

public 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

getLeftOperand

public Transformation getLeftOperand()

getRightOperand

public Transformation getRightOperand()

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