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

Class SubstrTransformation

java.lang.Object

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

it.bancaditalia.oss.vtl.impl.transform.string.SubstrTransformation

All Implemented Interfaces:

Transformation, Serializable

public class SubstrTransformation
extends TransformationImpl

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
SubstrTransformation(Transformation expr, Transformation start, Transformation len)

Method Summary

Modifier and Type	Method	Description
Lineage	computeLineage()
boolean	equals(Object obj)
VTLValue	eval(TransformationScheme session)	Evaluates this transformation in the context of the given TransformationScheme.
VTLValueMetadata	getMetadata(TransformationScheme session)	Checks and returns the metadata of this Transformation within the given TransformationScheme.
Set<LeafTransformation>	getTerminals()	A set of all the LeafTransformations recursively referenced by this Transformation.
int	hashCode()
boolean	isTerminal()
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

Constructor Detail

SubstrTransformation

public SubstrTransformation(Transformation expr,
                            Transformation start,
                            Transformation len)

Method Detail

eval

public VTLValue eval(TransformationScheme session)

Description copied from interface: Transformation

Evaluates this transformation in the context of the given TransformationScheme.

Parameters:

session - the transformation scheme

Returns:

the result of the computation of this Transformation.

getMetadata

public VTLValueMetadata getMetadata(TransformationScheme session)

Description copied from interface: Transformation

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

Parameters:

session - the transformation scheme

Returns:

the metadata of this Transformation.

isTerminal

public boolean isTerminal()

Returns:

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

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

toString

public String toString()

Overrides:

toString in class Object

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