org.fcrepo.utils

Class JcrRdfTools

java.lang.Object

org.fcrepo.utils.JcrRdfTools

public abstract class JcrRdfTools
extends Object

A set of helpful tools for converting JCR properties to RDF

Author:

Chris Beer

Field Summary

Fields

Modifier and Type	Field and Description
static com.google.common.collect.BiMap<String,String>	jcrNamespacesToRDFNamespaces A map of JCR namespaces to Fedora's RDF namespaces
static com.google.common.collect.BiMap<String,String>	rdfNamespacesToJcrNamespaces A map of Fedora's RDF namespaces to the JCR equivalent

Constructor Summary

Constructors

Constructor and Description
JcrRdfTools()

Method Summary

Methods

Modifier and Type	Method and Description
static void	addPropertyToModel(com.hp.hpl.jena.rdf.model.Resource subject, com.hp.hpl.jena.rdf.model.Model model, javax.jcr.Property property) Add a JCR property to the given RDF Model (with the given subject)
static void	addPropertyToModel(com.hp.hpl.jena.rdf.model.Resource subject, com.hp.hpl.jena.rdf.model.Model model, javax.jcr.Property property, javax.jcr.Value v) Add a JCR property to the given RDF Model (with the given subject)
static javax.jcr.Value	createValue(javax.jcr.Node node, com.hp.hpl.jena.rdf.model.RDFNode data, int type) Create a JCR value from an RDFNode, either by using the given JCR PropertyType or by looking at the RDFNode Datatype
static com.hp.hpl.jena.rdf.model.Model	getFixityResultsModel(GraphSubjects factory, javax.jcr.Node node, Iterable<FixityResult> blobs) Serialize the JCR fixity information in a Jena Model
static com.hp.hpl.jena.rdf.model.Resource	getGraphSubject(GraphSubjects factory, javax.jcr.Node node) Translate a JCR node into an RDF Resource
static String	getJcrNamespaceForRDFNamespace(String rdfNamespaceUri) Convert a Fedora RDF Namespace into its JCR equivalent
static com.hp.hpl.jena.rdf.model.Model	getJcrNamespaceModel(javax.jcr.Session session) Get an RDF model of the registered JCR namespaces
static com.hp.hpl.jena.rdf.model.Model	getJcrNodeIteratorModel(GraphSubjects factory, Iterator<javax.jcr.Node> nodeIterator, com.hp.hpl.jena.rdf.model.Resource iteratorSubject) Get an RDF model for the given JCR NodeIterator
static com.hp.hpl.jena.rdf.model.Model	getJcrPropertiesModel(GraphSubjects factory, javax.jcr.Node node) Get an RDF Model for a node that includes all its own JCR properties, as well as the properties of its immediate children.
static com.hp.hpl.jena.rdf.model.Model	getJcrTreeModel(GraphSubjects factory, javax.jcr.Node node, long offset, int limit) Add the properties of a Node's parent and immediate children (as well as the jcr:content of children) to the given RDF model
static com.hp.hpl.jena.rdf.model.Model	getJcrVersionsModel(GraphSubjects factory, javax.jcr.Node node) Get a Jena RDF model for the JCR version history information for a node
static javax.jcr.Node	getNodeFromGraphSubject(GraphSubjects factory, javax.jcr.Session session, com.hp.hpl.jena.rdf.model.Resource subject) Translate an RDF resource into a JCR node
static String	getPropertyNameFromPredicate(javax.jcr.Node node, com.hp.hpl.jena.rdf.model.Property predicate) Given an RDF predicate value (namespace URI + local name), figure out what JCR property to use
static String	getRDFNamespaceForJcrNamespace(String jcrNamespaceUri) Convert a JCR namespace into an RDF namespace fit for downstream consumption.
static boolean	isFedoraGraphSubject(GraphSubjects factory, com.hp.hpl.jena.rdf.model.Resource subject) Predicate for determining whether this Node is a Fedora object.
static void	setGetClusterConfiguration(GetClusterConfiguration getClusterConfiguration) Set the function used to get the cluster configuration for Infinispan
static void	setLlstore(LowLevelStorageService lowLevelStorageService) Set the Low-level storage server implementation

Methods inherited from class java.lang.Object

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

Field Detail

jcrNamespacesToRDFNamespaces

public static com.google.common.collect.BiMap<String,String> jcrNamespacesToRDFNamespaces

A map of JCR namespaces to Fedora's RDF namespaces

rdfNamespacesToJcrNamespaces

public static com.google.common.collect.BiMap<String,String> rdfNamespacesToJcrNamespaces

A map of Fedora's RDF namespaces to the JCR equivalent

Constructor Detail

JcrRdfTools

public JcrRdfTools()

Method Detail

getJcrNamespaceForRDFNamespace

public static String getJcrNamespaceForRDFNamespace(String rdfNamespaceUri)

Convert a Fedora RDF Namespace into its JCR equivalent

Parameters:

rdfNamespaceUri - a namespace from an RDF document

Returns:

the JCR namespace, or the RDF namespace if no matching JCR namespace is found

getRDFNamespaceForJcrNamespace

public static String getRDFNamespaceForJcrNamespace(String jcrNamespaceUri)

Convert a JCR namespace into an RDF namespace fit for downstream consumption.

Parameters:

jcrNamespaceUri - a namespace from the JCR NamespaceRegistry

Returns:

an RDF namespace for downstream consumption.

getGraphSubject

public static com.hp.hpl.jena.rdf.model.Resource getGraphSubject(GraphSubjects factory,
                                                 javax.jcr.Node node)
                                                          throws javax.jcr.RepositoryException

Translate a JCR node into an RDF Resource

Parameters:

node -

Returns:

an RDF URI resource

Throws:

javax.jcr.RepositoryException

getNodeFromGraphSubject

public static javax.jcr.Node getNodeFromGraphSubject(GraphSubjects factory,
                                     javax.jcr.Session session,
                                     com.hp.hpl.jena.rdf.model.Resource subject)
                                              throws javax.jcr.RepositoryException

Translate an RDF resource into a JCR node

Parameters:

session -

subject - an RDF URI resource

Returns:

a JCR node, or null if one couldn't be found

Throws:

javax.jcr.RepositoryException

isFedoraGraphSubject

public static boolean isFedoraGraphSubject(GraphSubjects factory,
                           com.hp.hpl.jena.rdf.model.Resource subject)

Predicate for determining whether this Node is a Fedora object.

getJcrNamespaceModel

public static com.hp.hpl.jena.rdf.model.Model getJcrNamespaceModel(javax.jcr.Session session)
                                                            throws javax.jcr.RepositoryException

Get an RDF model of the registered JCR namespaces

Parameters:

session -

Returns:

Throws:

javax.jcr.RepositoryException

getJcrNodeIteratorModel

public static com.hp.hpl.jena.rdf.model.Model getJcrNodeIteratorModel(GraphSubjects factory,
                                                      Iterator<javax.jcr.Node> nodeIterator,
                                                      com.hp.hpl.jena.rdf.model.Resource iteratorSubject)
                                                               throws javax.jcr.RepositoryException

Get an RDF model for the given JCR NodeIterator

Parameters:

factory -

nodeIterator -

iteratorSubject -

Returns:

Throws:

javax.jcr.RepositoryException

getJcrPropertiesModel

public static com.hp.hpl.jena.rdf.model.Model getJcrPropertiesModel(GraphSubjects factory,
                                                    javax.jcr.Node node)
                                                             throws javax.jcr.RepositoryException

Get an RDF Model for a node that includes all its own JCR properties, as well as the properties of its immediate children.

Parameters:

node -

Returns:

Throws:

javax.jcr.RepositoryException

getJcrTreeModel

public static com.hp.hpl.jena.rdf.model.Model getJcrTreeModel(GraphSubjects factory,
                                              javax.jcr.Node node,
                                              long offset,
                                              int limit)
                                                       throws javax.jcr.RepositoryException

Add the properties of a Node's parent and immediate children (as well as the jcr:content of children) to the given RDF model

Parameters:

node -

offset -

limit - @throws RepositoryException

Throws:

javax.jcr.RepositoryException

createValue

public static javax.jcr.Value createValue(javax.jcr.Node node,
                          com.hp.hpl.jena.rdf.model.RDFNode data,
                          int type)
                                   throws javax.jcr.RepositoryException

Create a JCR value from an RDFNode, either by using the given JCR PropertyType or by looking at the RDFNode Datatype

Parameters:

data - an RDF Node (possibly with a DataType)

type - a JCR PropertyType value

Returns:

a JCR Value

Throws:

javax.jcr.RepositoryException

addPropertyToModel

public static void addPropertyToModel(com.hp.hpl.jena.rdf.model.Resource subject,
                      com.hp.hpl.jena.rdf.model.Model model,
                      javax.jcr.Property property)
                               throws javax.jcr.RepositoryException

Add a JCR property to the given RDF Model (with the given subject)

Parameters:

subject - the RDF subject to use in the assertions

model - the RDF graph to insert the triple into

property - the JCR property (multivalued or not) to convert to triples

Throws:

javax.jcr.RepositoryException

addPropertyToModel

public static void addPropertyToModel(com.hp.hpl.jena.rdf.model.Resource subject,
                      com.hp.hpl.jena.rdf.model.Model model,
                      javax.jcr.Property property,
                      javax.jcr.Value v)
                               throws javax.jcr.RepositoryException

Add a JCR property to the given RDF Model (with the given subject)

Parameters:

subject - the RDF subject to use in the assertions

model - the RDF graph to insert the triple into

property - the JCR property (multivalued or not) to convert to triples

v - the actual JCR Value to insert into the graph

Throws:

javax.jcr.RepositoryException

getPropertyNameFromPredicate

public static String getPropertyNameFromPredicate(javax.jcr.Node node,
                                  com.hp.hpl.jena.rdf.model.Property predicate)
                                           throws javax.jcr.RepositoryException

Given an RDF predicate value (namespace URI + local name), figure out what JCR property to use

Parameters:

node - the JCR node we want a property for

predicate - the predicate to map to a property name

Returns:

the JCR property name

Throws:

javax.jcr.RepositoryException

getJcrVersionsModel

public static com.hp.hpl.jena.rdf.model.Model getJcrVersionsModel(GraphSubjects factory,
                                                  javax.jcr.Node node)
                                                           throws javax.jcr.RepositoryException

Get a Jena RDF model for the JCR version history information for a node

Parameters:

factory -

node -

Returns:

Throws:

javax.jcr.RepositoryException

getFixityResultsModel

public static com.hp.hpl.jena.rdf.model.Model getFixityResultsModel(GraphSubjects factory,
                                                    javax.jcr.Node node,
                                                    Iterable<FixityResult> blobs)
                                                             throws javax.jcr.RepositoryException

Serialize the JCR fixity information in a Jena Model

Parameters:

factory -

node -

blobs -

Returns:

Throws:

javax.jcr.RepositoryException

setGetClusterConfiguration

public static void setGetClusterConfiguration(GetClusterConfiguration getClusterConfiguration)

Set the function used to get the cluster configuration for Infinispan

setLlstore

public static void setLlstore(LowLevelStorageService lowLevelStorageService)

Set the Low-level storage server implementation