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

Class ThisScope

java.lang.Object

it.bancaditalia.oss.vtl.impl.transform.scope.ThisScope

All Implemented Interfaces:

TransformationScheme, Serializable

public class ThisScope
extends Object
implements TransformationScheme, Serializable

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static String	THIS

Constructor Summary

Constructors

Constructor	Description
ThisScope(DataSetMetadata thisMetadata, Lineage thisLineage)
ThisScope(DataSet thisValue, Lineage thisLineage)

Method Summary

Modifier and Type	Method	Description
boolean	contains(String alias)	Determine if an alias is defined in this TransformationScheme.
VTLValueMetadata	getMetadata(String node)	Searches and retrieves metadata for value, referred by an alias defined in this TransformationScheme.
MetadataRepository	getRepository()
Statement	getRule(String node)	Returns a structure a rule referred by an alias defined in this TransformationScheme.
Optional<Lineage>	linkLineage(String alias)	Tries to resolve a lineage link specified by a given alias for a VTL rule defined in this scheme.
VTLValue	resolve(String node)	Searches and retrieves a value, referred by an alias defined in this TransformationScheme.

Methods inherited from class java.lang.Object

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

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

eval, getParent, resolve

Field Detail

THIS

public static final String THIS

See Also:

Constant Field Values

Constructor Detail

ThisScope

public ThisScope(DataSet thisValue,
                 Lineage thisLineage)

ThisScope

public ThisScope(DataSetMetadata thisMetadata,
                 Lineage thisLineage)

Method Detail

contains

public boolean contains(String alias)

Description copied from interface: TransformationScheme

Determine if an alias is defined in this TransformationScheme.

Specified by:

contains in interface TransformationScheme

Parameters:

alias - the alias whose value is to be retrieved.

Returns:

whether the alias is defined or not.

getMetadata

public VTLValueMetadata getMetadata(String node)

Description copied from interface: TransformationScheme

Searches and retrieves metadata for value, referred by an alias defined in this TransformationScheme.

Specified by:

getMetadata in interface TransformationScheme

Parameters:

node - the alias whose value is to be retrieved.

Returns:

the metadata of the value if the alias is found.

resolve

public VTLValue resolve(String node)

Description copied from interface: TransformationScheme

Searches and retrieves a value, referred by an alias defined in this TransformationScheme.

Specified by:

resolve in interface TransformationScheme

Parameters:

node - The alias whose value is to be retrieved.

Returns:

The VTLValue if the alias is found.

getRule

public Statement getRule(String node)

Description copied from interface: TransformationScheme

Returns a structure a rule referred by an alias defined in this TransformationScheme.

Specified by:

getRule in interface TransformationScheme

Parameters:

node - the alias of the rule whose structure is to be retrieved.

Returns:

a Statement instance describing the rule if found.

getRepository

public MetadataRepository getRepository()

Specified by:

getRepository in interface TransformationScheme

Returns:

The MetadataRepository instance used by this TransformationScheme.

linkLineage

public Optional<Lineage> linkLineage(String alias)

Description copied from interface: TransformationScheme

Tries to resolve a lineage link specified by a given alias for a VTL rule defined in this scheme.

Specified by:

linkLineage in interface TransformationScheme

Parameters:

alias - The alias referring to a rule

Returns:

The lineage link