Package org.trellisldp.http.impl

Class RdfUtils

java.lang.Object

org.trellisldp.http.impl.RdfUtils

public final class RdfUtils
extends java.lang.Object

RDF Utility functions

Field Summary

Fields

Modifier and Type	Field	Description
static java.util.Map<org.apache.commons.rdf.api.IRI,org.apache.commons.rdf.api.IRI>	superClassOf	A mapping of LDP types to their supertype

Method Summary

Modifier and Type	Method	Description
static java.util.function.Predicate<org.apache.commons.rdf.api.Quad>	filterWithPrefer(Prefer prefer)	Create a filter based on a Prefer header
static org.apache.commons.rdf.api.IRI	getDefaultProfile(org.apache.commons.rdf.api.RDFSyntax syntax, java.lang.String identifier)	Get a default profile IRI from the syntax and/or identifier
static org.apache.commons.rdf.api.IRI	getDefaultProfile(org.apache.commons.rdf.api.RDFSyntax syntax, org.apache.commons.rdf.api.IRI identifier)	Get a default profile IRI from the syntax and/or identifier
static org.apache.commons.rdf.api.IRI	getProfile(java.util.List<javax.ws.rs.core.MediaType> acceptableTypes, org.apache.commons.rdf.api.RDFSyntax syntax)	Given a list of acceptable media types and an RDF syntax, get the relevant profile data, if relevant
static java.util.Optional<org.apache.commons.rdf.api.RDFSyntax>	getSyntax(java.util.List<javax.ws.rs.core.MediaType> acceptableTypes, java.util.Optional<java.lang.String> mimeType)	Given a list of acceptable media types, get an RDF syntax.
static java.lang.Boolean	isDeleted(org.trellisldp.api.Resource res)	Check if the resource has a deleted mark
static java.util.stream.Stream<org.apache.commons.rdf.api.IRI>	ldpResourceTypes(org.apache.commons.rdf.api.IRI interactionModel)	Get all of the LDP resource (super) types for the given LDP interaction model
static java.util.function.Function<org.apache.commons.rdf.api.Quad,org.apache.commons.rdf.api.Quad>	skolemizeQuads(org.trellisldp.api.ResourceService svc, java.lang.String baseUrl)	Convert quads from an external form to a skolemized form
static java.util.function.Function<org.apache.commons.rdf.api.Triple,org.apache.commons.rdf.api.Triple>	skolemizeTriples(org.trellisldp.api.ResourceService svc, java.lang.String baseUrl)	Convert triples from an external form to a skolemized form
static java.util.function.Function<org.apache.commons.rdf.api.Quad,org.apache.commons.rdf.api.Quad>	unskolemizeQuads(org.trellisldp.api.ResourceService svc, java.lang.String baseUrl)	Convert quads from a skolemized form to an external form
static java.util.function.Function<org.apache.commons.rdf.api.Triple,org.apache.commons.rdf.api.Triple>	unskolemizeTriples(org.trellisldp.api.ResourceService svc, java.lang.String baseUrl)	Convert triples from a skolemized form to an externa form

Methods inherited from class java.lang.Object

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

Field Detail

superClassOf

public static final java.util.Map<org.apache.commons.rdf.api.IRI,org.apache.commons.rdf.api.IRI> superClassOf

A mapping of LDP types to their supertype

Method Detail

ldpResourceTypes

public static java.util.stream.Stream<org.apache.commons.rdf.api.IRI> ldpResourceTypes(org.apache.commons.rdf.api.IRI interactionModel)

Get all of the LDP resource (super) types for the given LDP interaction model

Parameters:

interactionModel - the interaction model

Returns:

a stream of types

filterWithPrefer

public static java.util.function.Predicate<org.apache.commons.rdf.api.Quad> filterWithPrefer(Prefer prefer)

Create a filter based on a Prefer header

Parameters:

prefer - the Prefer header

Returns:

a suitable predicate for filtering a stream of quads

unskolemizeTriples

public static java.util.function.Function<org.apache.commons.rdf.api.Triple,org.apache.commons.rdf.api.Triple> unskolemizeTriples(org.trellisldp.api.ResourceService svc,
                                                                                                                                  java.lang.String baseUrl)

Convert triples from a skolemized form to an externa form

Parameters:

svc - the resourceService

baseUrl - the base URL

Returns:

a mapping function

skolemizeTriples

public static java.util.function.Function<org.apache.commons.rdf.api.Triple,org.apache.commons.rdf.api.Triple> skolemizeTriples(org.trellisldp.api.ResourceService svc,
                                                                                                                                java.lang.String baseUrl)

Convert triples from an external form to a skolemized form

Parameters:

svc - the resourceService

baseUrl - the base URL

Returns:

a mapping function

unskolemizeQuads

public static java.util.function.Function<org.apache.commons.rdf.api.Quad,org.apache.commons.rdf.api.Quad> unskolemizeQuads(org.trellisldp.api.ResourceService svc,
                                                                                                                            java.lang.String baseUrl)

Convert quads from a skolemized form to an external form

Parameters:

svc - the resource service

baseUrl - the base URL

Returns:

a mapping function

skolemizeQuads

public static java.util.function.Function<org.apache.commons.rdf.api.Quad,org.apache.commons.rdf.api.Quad> skolemizeQuads(org.trellisldp.api.ResourceService svc,
                                                                                                                          java.lang.String baseUrl)

Convert quads from an external form to a skolemized form

Parameters:

svc - the resource service

baseUrl - the base URL

Returns:

a mapping function

getSyntax

public static java.util.Optional<org.apache.commons.rdf.api.RDFSyntax> getSyntax(java.util.List<javax.ws.rs.core.MediaType> acceptableTypes,
                                                                                 java.util.Optional<java.lang.String> mimeType)

Given a list of acceptable media types, get an RDF syntax.

Parameters:

acceptableTypes - the types from HTTP headers

mimeType - an additional "default" mimeType to match

Returns:

an RDFSyntax

getProfile

public static org.apache.commons.rdf.api.IRI getProfile(java.util.List<javax.ws.rs.core.MediaType> acceptableTypes,
                                                        org.apache.commons.rdf.api.RDFSyntax syntax)

Given a list of acceptable media types and an RDF syntax, get the relevant profile data, if relevant

Parameters:

acceptableTypes - the types from HTTP headers

syntax - an RDF syntax

Returns:

a profile IRI if relevant

getDefaultProfile

public static org.apache.commons.rdf.api.IRI getDefaultProfile(org.apache.commons.rdf.api.RDFSyntax syntax,
                                                               java.lang.String identifier)

Get a default profile IRI from the syntax and/or identifier

Parameters:

syntax - the RDF syntax

identifier - the resource identifier

Returns:

a profile IRI usable by the output streamer

isDeleted

public static java.lang.Boolean isDeleted(org.trellisldp.api.Resource res)

Check if the resource has a deleted mark

Parameters:

res - the resource

Returns:

true if the resource has been deleted; false otherwise

getDefaultProfile

public static org.apache.commons.rdf.api.IRI getDefaultProfile(org.apache.commons.rdf.api.RDFSyntax syntax,
                                                               org.apache.commons.rdf.api.IRI identifier)

Get a default profile IRI from the syntax and/or identifier

Parameters:

syntax - the RDF syntax

identifier - the resource identifier

Returns:

a profile IRI usable by the output streamer