Package com.inrupt.rdf.wrapping.jena

Class ValueMappings

java.lang.Object

com.inrupt.rdf.wrapping.jena.ValueMappings

public final class ValueMappings
extends Object

Common mappings from RDF terms to other values. For use in wrapping classes.

Author:

Samu Lang

Method Summary

Modifier and Type	Method	Description
static <T extends org.apache.jena.rdf.model.RDFNode> ValueMapping<T>	as(Class<T> view)	A factory for mappings from a node to a view.
static String	iriAsString(org.apache.jena.rdf.model.RDFNode node)	Maps a resource node to its IRI.
static URI	iriAsUri(org.apache.jena.rdf.model.RDFNode node)	Maps a resource node to its IRI.
static Boolean	literalAsBoolean(org.apache.jena.rdf.model.RDFNode node)	Maps a literal node to a boolean.
static Instant	literalAsInstant(org.apache.jena.rdf.model.RDFNode node)	Maps a literal node to a point in time.
static Integer	literalAsIntegerOrNull(org.apache.jena.rdf.model.RDFNode node)	Maps a literal node to an integer.
static String	literalAsString(org.apache.jena.rdf.model.RDFNode node)	Maps a literal node to its lexical form.

Methods inherited from class java.lang.Object

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

Method Detail

literalAsString

public static String literalAsString(org.apache.jena.rdf.model.RDFNode node)

Maps a literal node to its lexical form.

Parameters:

node - the node to map

Returns:

the lexical form of the node as a string

Throws:

NullPointerException - if the node is null

org.apache.jena.rdf.model.LiteralRequiredException - if the node is not a literal

iriAsUri

public static URI iriAsUri(org.apache.jena.rdf.model.RDFNode node)

Maps a resource node to its IRI.

Parameters:

node - the node to convert

Returns:

the IRI of the node as a string

Throws:

NullPointerException - if the node is null

org.apache.jena.rdf.model.ResourceRequiredException - if the node is not a resource

iriAsString

public static String iriAsString(org.apache.jena.rdf.model.RDFNode node)

Maps a resource node to its IRI.

Parameters:

node - the node to convert

Returns:

the IRI of the node as a string

Throws:

NullPointerException - if the node is null

org.apache.jena.rdf.model.ResourceRequiredException - if the node is not a resource

literalAsInstant

public static Instant literalAsInstant(org.apache.jena.rdf.model.RDFNode node)

Maps a literal node to a point in time.

Parameters:

node - the node to map

Returns:

the point in time represented by the node's lexical form as an Instant

Throws:

NullPointerException - if the node is null

org.apache.jena.rdf.model.LiteralRequiredException - if the node is not a literal

DateTimeParseException - if the node's lexical form cannot be parsed as an Instant

literalAsBoolean

public static Boolean literalAsBoolean(org.apache.jena.rdf.model.RDFNode node)

Maps a literal node to a boolean.

Parameters:

node - the node to map

Returns:

the boolean represented by the node's lexical form as a Boolean

Throws:

NullPointerException - if the node is null

org.apache.jena.rdf.model.LiteralRequiredException - if the node is not a literal

literalAsIntegerOrNull

public static Integer literalAsIntegerOrNull(org.apache.jena.rdf.model.RDFNode node)

Maps a literal node to an integer.

Parameters:

node - the node to map

Returns:

the integer represented by the node's lexical form or null if the form can not be parsed

Throws:

NullPointerException - if the node is null

org.apache.jena.rdf.model.LiteralRequiredException - if the node is not a literal

as

public static <T extends org.apache.jena.rdf.model.RDFNode> ValueMapping<T> as(Class<T> view)

A factory for mappings from a node to a view.

Type Parameters:

T - the type of the target class to map to

Parameters:

view - the target class to map to

Returns:

a mapping that converts the node to the supplied implementation type

Throws:

NullPointerException - if the view is null

See Also:

the returned mapping function (including exceptions it throws)