com.bigdata.rdf.internal

Class ColorsEnumExtension<V extends BigdataValue>

java.lang.Object

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

All Implemented Interfaces:

IExtension<V>

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

Example of how to do a custom enum and map that enum over a byte using a native inline XSDByteIV.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ColorsEnumExtension.Color Simple demonstration enum for some common colors.

Field Summary

Fields

Modifier and Type	Field and Description
static org.openrdf.model.URI	COLOR The datatype URI for the colors enum extension.

Constructor Summary

Constructors

Constructor and Description
ColorsEnumExtension(IDatatypeURIResolver resolver)

Method Summary

Methods

Modifier and Type	Method and Description
V	asValue(LiteralExtensionIV iv, BigdataValueFactory vf) Attempt to convert the AbstractLiteralIV.byteValue() back into a ColorsEnumExtension.Color, and then use the string value of the ColorsEnumExtension.Color to create an RDF literal.
LiteralExtensionIV	createIV(org.openrdf.model.Value value) Attempts to convert the supplied RDF value into a colors enum 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

COLOR

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

The datatype URI for the colors enum extension.

Constructor Detail

ColorsEnumExtension

public ColorsEnumExtension(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 RDF value into a colors enum representation. Tests for a literal value with the correct datatype that can be converted to one of the colors in the ColorsEnumExtension.Color enum based on the string value of the literal's label. Each ColorsEnumExtension.Color in the enum maps to a particular byte. This byte is encoded in a delegate XSDByteIV, and an LiteralExtensionIV is returned that wraps 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)

Attempt to convert the AbstractLiteralIV.byteValue() back into a ColorsEnumExtension.Color, and then use the string value of the ColorsEnumExtension.Color to create an RDF literal.

Specified by:

asValue in interface IExtension<V extends BigdataValue>

Parameters:

iv - The extension IV

vf - The bigdata value factory

Returns:

The RDF Value