com.bigdata.rdf.internal

Class EpochExtension<V extends BigdataValue>

java.lang.Object

com.bigdata.rdf.internal.EpochExtension<V>

All Implemented Interfaces:

IExtension<V>

public class EpochExtension<V extends BigdataValue>
extends Object
implements IExtension<V>

This implementation of IExtension implements inlining for literals that represent time in milliseconds since the epoch. The milliseconds are encoded as an inline long.

Field Summary

Fields

Modifier and Type	Field and Description
static org.openrdf.model.URI	EPOCH The datatype URI for the epoch extension.

Constructor Summary

Constructors

Constructor and Description
EpochExtension(IDatatypeURIResolver resolver)

Method Summary

Methods

Modifier and Type	Method and Description
V	asValue(LiteralExtensionIV iv, BigdataValueFactory vf) Use the string value of the LiteralExtensionIV (which defers to the string value of the native type) to create a literal with the epoch datatype.
LiteralExtensionIV	createIV(org.openrdf.model.Value value) Attempts to convert the supplied value into an epoch representation.
Set<BigdataURI>	getDatatypes() Return the fully resolved datatype(s) handled by this interface in the form of a BigdataURI with the TermId already set.

Methods inherited from class java.lang.Object

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

Field Detail

EPOCH

public static final transient org.openrdf.model.URI EPOCH

The datatype URI for the epoch extension.

Constructor Detail

EpochExtension

public EpochExtension(IDatatypeURIResolver resolver)

Method Detail

getDatatypes

public Set<BigdataURI> getDatatypes()

Description copied from interface: IExtension

Return the fully resolved datatype(s) handled by this interface in the form of a BigdataURI with the TermId already set.

Specified by:

getDatatypes in interface IExtension<V extends BigdataValue>

Returns:

the datatype

createIV

public LiteralExtensionIV createIV(org.openrdf.model.Value value)

Attempts to convert the supplied value into an epoch representation. Tests for a literal value with the correct datatype that can be converted to a positive long integer. Encodes the long in a delegate XSDLongIV, and returns an LiteralExtensionIV to wrap the native type.

Specified by:

createIV in interface IExtension<V extends BigdataValue>

Parameters:

value - The RDF Value

Returns:

The extension IV -or- null if the Value can not be inlined using this IExtension.

asValue

public V asValue(LiteralExtensionIV iv,
        BigdataValueFactory vf)

Use the string value of the LiteralExtensionIV (which defers to the string value of the native type) to create a literal with the epoch datatype.

Specified by:

asValue in interface IExtension<V extends BigdataValue>

Parameters:

iv - The extension IV

vf - The bigdata value factory

Returns:

The RDF Value