won.protocol.util

Class RdfUtils

java.lang.Object

won.protocol.util.RdfUtils

public class RdfUtils
extends java.lang.Object

Utilities for RDF manipulation with Jena.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RdfUtils.DefaultModelSelector Selector that selects all models, including the default model.
static interface	RdfUtils.GraphNameCheck
static interface	RdfUtils.ModelSelector ModelSelector used to select which models in a dataset to visit.
static interface	RdfUtils.ModelVisitor<T> Dataset visitor used for repeated application of model operations in a dataset.
static class	RdfUtils.NamedModel
static class	RdfUtils.Pair<E>
static interface	RdfUtils.ResultCombiner<T> ResultCombiner which combines to results of type T and returns it.

Field Summary

Fields

Modifier and Type	Field and Description
static org.apache.jena.rdf.model.RDFNode	EMPTY_RDF_NODE

Constructor Summary

Constructors

Constructor and Description
RdfUtils()

Method Summary

Modifier and Type	Method and Description
static void	addAllStatements(org.apache.jena.rdf.model.Model toModel, org.apache.jena.rdf.model.Model fromModel)
static org.apache.jena.query.Dataset	addDatasetToDataset(org.apache.jena.query.Dataset baseDataset, org.apache.jena.query.Dataset toBeAddedtoBase) Adds the second dataset to the first one, merging default models and models with identical name.
static org.apache.jena.query.Dataset	addDatasetToDataset(org.apache.jena.query.Dataset baseDataset, org.apache.jena.query.Dataset toBeAddedtoBase, boolean replaceNamedModel) Adds the second dataset to the first one, merging default models and models with identical name.
static void	addPrefixMapping(org.apache.jena.rdf.model.Model toModel, org.apache.jena.rdf.model.Model fromModel)
static <T> T	applyMethod(org.apache.jena.query.Dataset dataset, RdfUtils.ModelVisitor<T> visitor, RdfUtils.ModelSelector modelSelector, RdfUtils.ResultCombiner<T> resultCombiner) Returns the result obtained by calling the specified ModelVisitor's visit method where the result is combined with the ResultCombiner's combine method.
static <T> T	applyMethod(org.apache.jena.query.Dataset dataset, RdfUtils.ModelVisitor<T> visitor, RdfUtils.ResultCombiner<T> resultCombiner)
static boolean	areModelsIsomorphic(org.apache.jena.rdf.model.Model model, org.apache.jena.rdf.model.Model otherModel)
static void	attachModelByBaseResource(org.apache.jena.rdf.model.Resource subject, org.apache.jena.rdf.model.Property property, org.apache.jena.rdf.model.Model objectModel) Adds the specified objectModel to the model of the specified subject.
static void	attachModelByBaseResource(org.apache.jena.rdf.model.Resource subject, org.apache.jena.rdf.model.Property property, org.apache.jena.rdf.model.Model objectModel, boolean replaceBaseResourceByBlankNode) Adds the specified objectModel to the model of the specified subject.
static org.apache.jena.query.Dataset	cloneDataset(org.apache.jena.query.Dataset dataset)
static org.apache.jena.rdf.model.Model	cloneModel(org.apache.jena.rdf.model.Model original) Clones the specified model (its statements and ns prefixes) and returns the clone.
static org.apache.jena.rdf.model.Model	condenseModelByIterativeTesting(org.apache.jena.rdf.model.Model model, java.util.function.Function<org.apache.jena.rdf.model.Model,java.lang.Boolean> isModelValidTest) Condense a model to a minimum of statements by iteratively removing single statements and testing if the condensed model is still valid.
static void	copyDatasetTriplesToModel(org.apache.jena.query.Dataset dataset, org.apache.jena.rdf.model.Model model) Adds all triples of the dataset to the model.
static java.net.URI	createNewGraphURI(java.lang.String baseURI, java.lang.String toAppend, int length, org.apache.jena.query.Dataset dataset) Creates a new graph URI for the specified dataset by appending a specified string (toAppend) and then n alphanumeric characters to the specified String.
static java.net.URI	createNewGraphURI(java.lang.String baseURI, java.lang.String toAppend, int length, RdfUtils.GraphNameCheck check) Creates a new graph URI for the specified dataset by appending a specified string (toAppend) and then n alphanumeric characters to the specified String.
static RdfUtils.Pair<org.apache.jena.query.Dataset>	diff(org.apache.jena.query.Dataset firstDataset, org.apache.jena.query.Dataset secondDataset)
static RdfUtils.Pair<org.apache.jena.rdf.model.Model>	diff(org.apache.jena.rdf.model.Model firstModel, org.apache.jena.rdf.model.Model secondModel)
static <T> T	findFirst(org.apache.jena.query.Dataset dataset, RdfUtils.ModelVisitor<T> visitor)
static <T> T	findFirst(org.apache.jena.query.Dataset dataset, RdfUtils.ModelVisitor<T> visitor, RdfUtils.ModelSelector modelSelector) Returns the first non-null result obtained by calling the specified ModelVisitor's visit method in the order defined by the specified ModelSelector.
static java.net.URI	findFirstObjectUri(org.apache.jena.rdf.model.Model model, org.apache.jena.rdf.model.Property property, org.apache.jena.rdf.model.RDFNode object, boolean allowMultiple, boolean allowNone)
static org.apache.jena.rdf.model.RDFNode	findFirstPropertyFromResource(org.apache.jena.query.Dataset dataset, org.apache.jena.rdf.model.Resource resource, org.apache.jena.rdf.model.Property p)
static org.apache.jena.rdf.model.RDFNode	findFirstPropertyFromResource(org.apache.jena.query.Dataset dataset, java.net.URI resourceURI, org.apache.jena.rdf.model.Property p) Finds the first resource which is a specified property of a specified resource.
static org.apache.jena.rdf.model.RDFNode	findFirstPropertyFromResource(org.apache.jena.rdf.model.Model model, org.apache.jena.rdf.model.Resource resource, org.apache.jena.rdf.model.Property property)
static org.apache.jena.rdf.model.RDFNode	findFirstPropertyFromResource(org.apache.jena.rdf.model.Model model, java.net.URI resourceURI, org.apache.jena.rdf.model.Property property) Finds the first resource which is a specified property of a specified resource.
static org.apache.jena.rdf.model.RDFNode	findFirstPropertyOf(org.apache.jena.rdf.model.Resource resource, org.apache.jena.rdf.model.Property property)
static java.util.Optional<org.apache.jena.rdf.model.RDFNode>	findFirstPropertyOfO(org.apache.jena.rdf.model.Resource resource, org.apache.jena.rdf.model.Property property)
static java.net.URI	findFirstSubjectUri(org.apache.jena.rdf.model.Model model, org.apache.jena.rdf.model.Property property, org.apache.jena.rdf.model.RDFNode object, boolean allowMultiple, boolean allowNone) Finds the first triple in the specified model that has the specified propery and object.
static <T> T	findOne(org.apache.jena.query.Dataset dataset, RdfUtils.ModelVisitor<T> visitor, boolean allowSame)
static <T> T	findOne(org.apache.jena.query.Dataset dataset, RdfUtils.ModelVisitor<T> visitor, RdfUtils.ModelSelector modelSelector, boolean allowSame) Returns the result obtained by calling the specified ModelVisitor's visit method in the order defined by the specified ModelSelector.
static org.apache.jena.rdf.model.Resource	findOneOrNoSubjectResource(org.apache.jena.rdf.model.Model model, org.apache.jena.rdf.model.Property property, org.apache.jena.rdf.model.RDFNode object)
static org.apache.jena.rdf.model.RDFNode	findOnePropertyFromResource(org.apache.jena.query.Dataset dataset, org.apache.jena.rdf.model.Resource resource, org.apache.jena.rdf.model.Property p)
static org.apache.jena.rdf.model.RDFNode	findOnePropertyFromResource(org.apache.jena.query.Dataset dataset, java.net.URI resourceURI, org.apache.jena.rdf.model.Property p) Finds resource which is a specified property of a specified resource.
static org.apache.jena.rdf.model.RDFNode	findOnePropertyFromResource(org.apache.jena.rdf.model.Model model, org.apache.jena.rdf.model.Resource resource, org.apache.jena.rdf.model.Property property)
static org.apache.jena.rdf.model.RDFNode	findOnePropertyFromResource(org.apache.jena.rdf.model.Model model, java.net.URI resourceURI, org.apache.jena.rdf.model.Property property) Finds resource which is a specified property of a specified resource.
static org.apache.jena.rdf.model.Resource	findOneSubjectResource(org.apache.jena.query.Dataset dataset, org.apache.jena.rdf.model.Property property, org.apache.jena.rdf.model.RDFNode object)
static org.apache.jena.rdf.model.Resource	findOneSubjectResource(org.apache.jena.rdf.model.Model model, org.apache.jena.rdf.model.Property property, org.apache.jena.rdf.model.RDFNode object)
static org.apache.jena.rdf.model.Resource	findOrCreateBaseResource(org.apache.jena.rdf.model.Model model) Finds the resource representing the model's base resource, i.e.
static java.util.List<org.apache.jena.rdf.model.Resource>	findSubjectResources(org.apache.jena.query.Dataset dataset, org.apache.jena.rdf.model.Property property, org.apache.jena.rdf.model.RDFNode object)
static org.apache.jena.rdf.model.Resource	getBaseResource(org.apache.jena.rdf.model.Model model) Returns the resource representing the model's base resource, i.e.
static RdfUtils.ModelSelector	getDefaultModelSelector() Returns a thread-safe, shared default model selector.
static <T> java.util.Optional<T>	getFirstObjectOfProperty(org.apache.jena.query.Dataset dataset, java.net.URI resource, java.net.URI property, java.util.function.Function<org.apache.jena.rdf.model.RDFNode,T> resultMapper)
static <T> java.util.Optional<T>	getFirstStatementMapped(org.apache.jena.query.Dataset dataset, java.net.URI subject, java.net.URI predicate, java.net.URI object, java.util.function.Function<org.apache.jena.rdf.model.Statement,T> resultMapper)
static java.util.Set<java.net.URI>	getGraphUris(org.apache.jena.query.Dataset dataset)
static java.util.List<java.lang.String>	getModelNames(org.apache.jena.query.Dataset dataset)
static java.util.Set<java.lang.String>	getModelsOfResource(org.apache.jena.query.Dataset dataset, org.apache.jena.rdf.model.RDFNode resource) Returns the names of all models that mention the specified resource.
static java.util.Set<java.lang.String>	getModelsOfSubjectResource(org.apache.jena.query.Dataset dataset, org.apache.jena.rdf.model.RDFNode resource) Returns the names of all models that mention the specified resource in the subject of a triple
static org.apache.jena.graph.Node	getNodeForPropertyPath(org.apache.jena.query.Dataset dataset, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath) Returns the first RDF node found in the specified dataset for the specified property path.
static org.apache.jena.graph.Node	getNodeForPropertyPath(org.apache.jena.rdf.model.Model model, org.apache.jena.graph.Node node, org.apache.jena.sparql.path.Path propertyPath)
static org.apache.jena.graph.Node	getNodeForPropertyPath(org.apache.jena.rdf.model.Model model, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath) Returns the first RDF node found in the specified model for the specified property path.
static java.util.Iterator<org.apache.jena.graph.Node>	getNodesForPropertyPath(org.apache.jena.query.Dataset dataset, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath) Evaluates the specified path in each model of the specified dataset, starting with the specified resourceURI.
static java.util.Iterator<org.apache.jena.graph.Node>	getNodesForPropertyPath(org.apache.jena.rdf.model.Model model, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath) Evaluates the specified path in the specified model, starting with the specified resourceURI.
static java.util.Iterator<org.apache.jena.rdf.model.RDFNode>	getNodesForPropertyPathByQuery(org.apache.jena.query.Dataset dataset, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath) Evaluates the property path by executing a sparql query.
static <T> java.util.Iterator<T>	getObjectsForPropertyPath(org.apache.jena.query.Dataset dataset, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath, java.util.function.Function<org.apache.jena.graph.Node,T> mapper) Evaluates the specified path in the specified dataset, starting with the specified resourceURI.
static <T> java.util.Iterator<T>	getObjectsForPropertyPath(org.apache.jena.rdf.model.Model model, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath, java.util.function.Function<org.apache.jena.graph.Node,T> mapper) Evaluates the specified path in the specified model, starting with the specified resourceURI.
static <T> java.util.List<T>	getObjectsOfProperty(org.apache.jena.query.Dataset dataset, java.net.URI resource, java.net.URI property, java.util.function.Function<org.apache.jena.rdf.model.RDFNode,T> resultMapper)
static <T> java.util.stream.Stream<T>	getObjectStreamForPropertyPath(org.apache.jena.query.Dataset dataset, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath, java.util.function.Function<org.apache.jena.graph.Node,T> mapper) Evaluates the specified path in the specified dataset, starting with the specified resourceURI.
static <T> java.util.stream.Stream<T>	getObjectStreamForPropertyPath(org.apache.jena.rdf.model.Model model, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath, java.util.function.Function<org.apache.jena.graph.Node,T> mapper)
static <T> java.util.stream.Stream<T>	getObjectStreamOfProperty(org.apache.jena.query.Dataset dataset, java.net.URI resourceURI, java.net.URI property, java.util.function.Function<org.apache.jena.rdf.model.RDFNode,T> mapper) Evaluates the specified path in the specified dataset, starting with the specified resourceURI.
static <T> java.util.stream.Stream<T>	getObjectStreamOfProperty(org.apache.jena.rdf.model.Model model, java.net.URI resourceURI, java.net.URI property, java.util.function.Function<org.apache.jena.rdf.model.RDFNode,T> mapper)
static java.lang.String	getStringPropertyForPropertyPath(org.apache.jena.query.Dataset dataset, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath) Evaluates the path on each model in the dataset obtained by dereferencing the specified resourceURI.
static java.lang.String	getStringPropertyForPropertyPath(org.apache.jena.rdf.model.Model model, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath) Evaluates the path on the model obtained by dereferencing the specified resourceURI.
static java.net.URI	getURIPropertyForPropertyPath(org.apache.jena.query.Dataset dataset, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath) Evaluates the path on all models in the dataset obtained by dereferencing the specified resourceURI.
static java.net.URI	getURIPropertyForPropertyPath(org.apache.jena.rdf.model.Model model, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath) Evaluates the path on the model obtained by dereferencing the specified resourceURI.
static java.util.Iterator<java.net.URI>	getURIsForPropertyPath(org.apache.jena.query.Dataset dataset, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath)
static java.util.Iterator<java.net.URI>	getURIsForPropertyPath(org.apache.jena.rdf.model.Model model, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath)
static java.util.Iterator<java.net.URI>	getURIsForPropertyPathByQuery(org.apache.jena.query.Dataset dataset, java.net.URI resourceURI, org.apache.jena.sparql.path.Path propertyPath) Evaluates a property path on the specified dataset by executing a sparql query and returns an iterator of URIs.
static boolean	isIsomorphicWith(org.apache.jena.query.Dataset dataset, org.apache.jena.query.Dataset otherDataset) Applies Model.isIsomorphicWith to all models in both datasets that have the same name, and checks that there are no more models in one than in the other.
static java.util.Set<org.apache.jena.rdf.model.Resource>	listUriResources(org.apache.jena.rdf.model.Model model)
static org.apache.jena.rdf.model.Model	mergeAllDataToSingleModel(org.apache.jena.query.Dataset ds)
static org.apache.jena.rdf.model.Model	mergeModelsCombiningBaseResource(org.apache.jena.rdf.model.Model model1, org.apache.jena.rdf.model.Model model2) Creates a new model that contains both specified models' content.
static java.util.Map<java.lang.String,java.lang.String>	mergeNsPrefixes(java.util.Map<java.lang.String,java.lang.String> prioritaryPrefixes, java.util.Map<java.lang.String,java.lang.String> additionalPrefixes) Creates a new Map object containing all prefixes from both specified maps.
static org.apache.jena.query.Dataset	readDatasetFromString(java.lang.String data, org.apache.jena.riot.Lang lang)
static org.apache.jena.rdf.model.Model	readRdfSnippet(java.io.InputStream in, java.lang.String rdfLanguage) Reads the InputStream into a Model.
static org.apache.jena.rdf.model.Model	readRdfSnippet(java.io.Reader in, java.lang.String rdfLanguage) Reads the InputStream into a Model.
static org.apache.jena.rdf.model.Model	readRdfSnippet(java.lang.String rdfAsString, java.lang.String rdfLanguage) Reads the specified string into a Model.
static void	removeResource(org.apache.jena.rdf.model.Model model, org.apache.jena.rdf.model.Resource resource)
static void	renameResourceWithPrefix(org.apache.jena.query.Dataset dataset, java.lang.String prefix, java.lang.String replacement) Rename resources in all models of the dataset, replacing the prefix string by the replacement string.
static void	renameResourceWithPrefix(org.apache.jena.rdf.model.Model model, java.lang.String prefix, java.lang.String replacement) Renames all URI resources in the model that start with the specified prefix by replacing it with replacement.
static void	replaceBaseResource(org.apache.jena.query.Dataset dataset, org.apache.jena.rdf.model.Resource replacement)
static void	replaceBaseResource(org.apache.jena.query.Dataset dataset, org.apache.jena.rdf.model.Resource replacement, boolean renamePrefixedURIs)
static void	replaceBaseResource(org.apache.jena.rdf.model.Model model, org.apache.jena.rdf.model.Resource replacement) Replaces the base URI that's set as the model's default URI prfefix in all statements by replacement and changes the base URI to replacement.
static void	replaceBaseResource(org.apache.jena.rdf.model.Model model, org.apache.jena.rdf.model.Resource replacement, boolean renamePrefixedURIs)
static void	replaceBaseURI(org.apache.jena.query.Dataset dataset, java.lang.String baseURI)
static void	replaceBaseURI(org.apache.jena.query.Dataset dataset, java.lang.String baseURI, boolean renamePrefixedURIs)
static void	replaceBaseURI(org.apache.jena.rdf.model.Model model, java.lang.String baseURI) Sets the model's base URI (i.e.
static void	replaceBaseURI(org.apache.jena.rdf.model.Model model, java.lang.String baseURI, boolean renamePrefixedURIs)
static org.apache.jena.rdf.model.Model	replaceResource(org.apache.jena.rdf.model.Resource resource, org.apache.jena.rdf.model.Resource replacement) Returns a copy of the specified resources' model where resource is replaced by replacement.
static void	replaceResourceInModel(org.apache.jena.rdf.model.Resource resource, org.apache.jena.rdf.model.Resource replacement) Modifies the specified resources' model, replacing resource with replacement.
static void	setBaseURI(org.apache.jena.rdf.model.Model model, java.lang.String baseURI) Set's the model's base URI.
static java.lang.String	setSparqlVars(java.lang.String stmt, java.util.Map<java.lang.String,java.lang.Object> varMap) Sets the vars of a given sparql query Replaces every instance of ::var:: with the given object (this can only be an URI or a List of URIS at the moment)
static java.lang.String	setSparqlVars(java.lang.String stmt, java.lang.String var, java.lang.Object obj) Sets the vars of a given sparql query Replaces every instance of ::var:: with the given object (this can only be an URI or a List of URIS at the moment)
static org.apache.jena.query.Dataset	toDataset(java.io.InputStream stream, org.apache.jena.riot.RDFFormat rdfFormat)
static org.apache.jena.query.Dataset	toDataset(java.lang.String content) Converts a String containing TriG formatted RDF into a Jena Dataset
static org.apache.jena.query.Dataset	toDataset(java.lang.String content, org.apache.jena.riot.RDFFormat rdfFormat)
static org.apache.jena.rdf.model.Model	toModel(java.lang.String content)
static java.util.stream.Stream<org.apache.jena.rdf.model.Model>	toModelStream(org.apache.jena.query.Dataset dataset)
static java.util.stream.Stream<RdfUtils.NamedModel>	toNamedModelStream(org.apache.jena.query.Dataset dataset, boolean includeDefaultModel)
static java.util.stream.Stream<org.apache.jena.rdf.model.Statement>	toStatementStream(org.apache.jena.query.Dataset dataset)
static java.util.stream.Stream<org.apache.jena.rdf.model.Statement>	toStatementStream(org.apache.jena.query.Dataset dataset, RdfUtils.ModelSelector modelSelector)
static java.util.stream.Stream<org.apache.jena.rdf.model.Statement>	toStatementStream(org.apache.jena.rdf.model.Model model)
static java.lang.String	toString(org.apache.jena.query.Dataset dataset) Converts a Jena Dataset into a TriG string
static java.lang.String	toString(org.apache.jena.rdf.model.Model model)
static java.lang.String	toString(org.apache.jena.graph.Node node) Returns the literal lexical form of the specified node or null if the node is null.
static java.net.URI	toURI(org.apache.jena.graph.Node node) Returns the URI of the specified node or null if the node is null.
static java.net.URI	toURI(org.apache.jena.rdf.model.RDFNode node) Returns the URI of the specified RDFNode or null if the node is null.
static java.net.URI	toUriOrNull(java.lang.Object uriStringOrNull)
static <T> java.util.Iterator<T>	visit(org.apache.jena.query.Dataset dataset, RdfUtils.ModelVisitor<T> visitor)
static <T> java.util.Iterator<T>	visit(org.apache.jena.query.Dataset dataset, RdfUtils.ModelVisitor<T> visitor, RdfUtils.ModelSelector modelSelector) Calls the specified ModelVisitor's visit method on each model of the dataset that is selected by the ModelSelector.
static <E,T extends java.util.Collection<E>> java.util.List<E>	visitFlattenedToList(org.apache.jena.query.Dataset dataset, RdfUtils.ModelVisitor<T> visitor)
static <E,T extends java.util.Collection<E>> java.util.List<E>	visitFlattenedToList(org.apache.jena.query.Dataset dataset, RdfUtils.ModelVisitor<T> visitor, RdfUtils.ModelSelector modelSelector) Visits all models and flattens the collections returned by the visitor into one list.
static org.apache.jena.rdf.model.NodeIterator	visitFlattenedToNodeIterator(org.apache.jena.query.Dataset dataset, RdfUtils.ModelVisitor<org.apache.jena.rdf.model.NodeIterator> visitor)
static org.apache.jena.rdf.model.NodeIterator	visitFlattenedToNodeIterator(org.apache.jena.query.Dataset dataset, RdfUtils.ModelVisitor<org.apache.jena.rdf.model.NodeIterator> visitor, RdfUtils.ModelSelector modelSelector) Visits all models and flattens the NodeIterator returned by the visitor into one.
static java.lang.String	writeDatasetToString(org.apache.jena.query.Dataset dataset, org.apache.jena.riot.Lang lang)
static java.lang.String	writeModelToString(org.apache.jena.rdf.model.Model model, org.apache.jena.riot.Lang lang)

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_RDF_NODE

public static final org.apache.jena.rdf.model.RDFNode EMPTY_RDF_NODE

Constructor Detail

RdfUtils

public RdfUtils()

Method Detail

toString

public static java.lang.String toString(org.apache.jena.rdf.model.Model model)

toModel

public static org.apache.jena.rdf.model.Model toModel(java.lang.String content)

toString

public static java.lang.String toString(org.apache.jena.query.Dataset dataset)

Converts a Jena Dataset into a TriG string

Parameters:

dataset - Dataset containing RDF which will be converted

Returns:

String containing TriG serialized RDF from the dataset

toDataset

public static org.apache.jena.query.Dataset toDataset(java.lang.String content)

Converts a String containing TriG formatted RDF into a Jena Dataset

Parameters:

content - String with the TriG formatted RDF

Returns:

Jena Dataset containing the RDF from content

toDataset

public static org.apache.jena.query.Dataset toDataset(java.lang.String content,
                                                      org.apache.jena.riot.RDFFormat rdfFormat)

toDataset

public static org.apache.jena.query.Dataset toDataset(java.io.InputStream stream,
                                                      org.apache.jena.riot.RDFFormat rdfFormat)

cloneModel

public static org.apache.jena.rdf.model.Model cloneModel(org.apache.jena.rdf.model.Model original)

Clones the specified model (its statements and ns prefixes) and returns the clone.

Parameters:

original -

Returns:

cloneDataset

public static org.apache.jena.query.Dataset cloneDataset(org.apache.jena.query.Dataset dataset)

isIsomorphicWith

public static boolean isIsomorphicWith(org.apache.jena.query.Dataset dataset,
                                       org.apache.jena.query.Dataset otherDataset)

Applies Model.isIsomorphicWith to all models in both datasets that have the same name, and checks that there are no more models in one than in the other.

Parameters:

dataset -

otherDataset -

Returns:

areModelsIsomorphic

public static boolean areModelsIsomorphic(org.apache.jena.rdf.model.Model model,
                                          org.apache.jena.rdf.model.Model otherModel)

diff

public static RdfUtils.Pair<org.apache.jena.rdf.model.Model> diff(org.apache.jena.rdf.model.Model firstModel,
                                                                  org.apache.jena.rdf.model.Model secondModel)

diff

public static RdfUtils.Pair<org.apache.jena.query.Dataset> diff(org.apache.jena.query.Dataset firstDataset,
                                                                org.apache.jena.query.Dataset secondDataset)

setBaseURI

public static void setBaseURI(org.apache.jena.rdf.model.Model model,
                              java.lang.String baseURI)

Set's the model's base URI. (i.e. the URI prefix for all relative or null relative URIs). Does nothing else.

Parameters:

model -

replaceBaseURI

public static void replaceBaseURI(org.apache.jena.rdf.model.Model model,
                                  java.lang.String baseURI)

Sets the model's base URI (i.e. the URI prefix for all relative or null relative URIs). If the base URI was set previously, replace it in all statements with the new base URI. Note that replacement operation does not do substring replacement, so any resources that were created as relative to the base uri may or may not be altered, depending on the model implementation.

Parameters:

model -

baseURI -

replaceBaseURI

public static void replaceBaseURI(org.apache.jena.rdf.model.Model model,
                                  java.lang.String baseURI,
                                  boolean renamePrefixedURIs)

renameResourceWithPrefix

public static void renameResourceWithPrefix(org.apache.jena.query.Dataset dataset,
                                            java.lang.String prefix,
                                            java.lang.String replacement)

Rename resources in all models of the dataset, replacing the prefix string by the replacement string.

Parameters:

dataset -

prefix -

replacement -

renameResourceWithPrefix

public static void renameResourceWithPrefix(org.apache.jena.rdf.model.Model model,
                                            java.lang.String prefix,
                                            java.lang.String replacement)

Renames all URI resources in the model that start with the specified prefix by replacing it with replacement.

listUriResources

public static java.util.Set<org.apache.jena.rdf.model.Resource> listUriResources(org.apache.jena.rdf.model.Model model)

replaceBaseURI

public static void replaceBaseURI(org.apache.jena.query.Dataset dataset,
                                  java.lang.String baseURI)

replaceBaseURI

public static void replaceBaseURI(org.apache.jena.query.Dataset dataset,
                                  java.lang.String baseURI,
                                  boolean renamePrefixedURIs)

replaceBaseResource

public static void replaceBaseResource(org.apache.jena.rdf.model.Model model,
                                       org.apache.jena.rdf.model.Resource replacement)

Replaces the base URI that's set as the model's default URI prfefix in all statements by replacement and changes the base URI to replacement. Does not do anything if no base URI is set.

Parameters:

model -

replacement -

replaceBaseResource

public static void replaceBaseResource(org.apache.jena.rdf.model.Model model,
                                       org.apache.jena.rdf.model.Resource replacement,
                                       boolean renamePrefixedURIs)

replaceBaseResource

public static void replaceBaseResource(org.apache.jena.query.Dataset dataset,
                                       org.apache.jena.rdf.model.Resource replacement)

replaceBaseResource

public static void replaceBaseResource(org.apache.jena.query.Dataset dataset,
                                       org.apache.jena.rdf.model.Resource replacement,
                                       boolean renamePrefixedURIs)

replaceResourceInModel

public static void replaceResourceInModel(org.apache.jena.rdf.model.Resource resource,
                                          org.apache.jena.rdf.model.Resource replacement)

Modifies the specified resources' model, replacing resource with replacement.

Parameters:

resource -

replacement -

removeResource

public static void removeResource(org.apache.jena.rdf.model.Model model,
                                  org.apache.jena.rdf.model.Resource resource)

mergeModelsCombiningBaseResource

public static org.apache.jena.rdf.model.Model mergeModelsCombiningBaseResource(org.apache.jena.rdf.model.Model model1,
                                                                               org.apache.jena.rdf.model.Model model2)

Creates a new model that contains both specified models' content. The base resource is that of model1, all triples in model2 that are attached to the its base resource are modified so as to be attached to the base resource of the result.

Parameters:

model1 -

model2 -

Returns:

findOrCreateBaseResource

public static org.apache.jena.rdf.model.Resource findOrCreateBaseResource(org.apache.jena.rdf.model.Model model)

Finds the resource representing the model's base resource, i.e. the resource with the model's base URI. If no such URI is specified, a dummy base URI is set and a resource is returned referencing that URI.

Parameters:

model -

Returns:

getBaseResource

public static org.apache.jena.rdf.model.Resource getBaseResource(org.apache.jena.rdf.model.Model model)

Returns the resource representing the model's base resource, i.e. the resource with the model's base URI.

Parameters:

model -

Returns:

writeModelToString

public static java.lang.String writeModelToString(org.apache.jena.rdf.model.Model model,
                                                  org.apache.jena.riot.Lang lang)

replaceResource

public static org.apache.jena.rdf.model.Model replaceResource(org.apache.jena.rdf.model.Resource resource,
                                                              org.apache.jena.rdf.model.Resource replacement)

Returns a copy of the specified resources' model where resource is replaced by replacement.

Parameters:

resource -

replacement -

Returns:

getGraphUris

public static java.util.Set<java.net.URI> getGraphUris(org.apache.jena.query.Dataset dataset)

attachModelByBaseResource

public static void attachModelByBaseResource(org.apache.jena.rdf.model.Resource subject,
                                             org.apache.jena.rdf.model.Property property,
                                             org.apache.jena.rdf.model.Model objectModel)

Adds the specified objectModel to the model of the specified subject. In the objectModel, the resource that is identified by the objectModel's base URI (the "" URI prefix) will be replaced by a newly created blank node(B, see later). All content of the objectModel is added to the model of the subject. An additional triple (subject, property, B) is added. Moreover, the Namespace prefixes are merged.

Parameters:

subject -

property -

objectModel - caution - will be modified

attachModelByBaseResource

public static void attachModelByBaseResource(org.apache.jena.rdf.model.Resource subject,
                                             org.apache.jena.rdf.model.Property property,
                                             org.apache.jena.rdf.model.Model objectModel,
                                             boolean replaceBaseResourceByBlankNode)

Adds the specified objectModel to the model of the specified subject. In the objectModel, the resource that is identified by the objectModel's base URI (the "" URI prefix) will be replaced by a newly created blank node(B, see later). All content of the objectModel is added to the model of the subject. An additional triple (subject, property, B) is added. Moreover, the Namespace prefixes are merged.

Parameters:

subject -

property -

objectModel - caution - will be modified

replaceBaseResourceByBlankNode -

mergeNsPrefixes

public static java.util.Map<java.lang.String,java.lang.String> mergeNsPrefixes(java.util.Map<java.lang.String,java.lang.String> prioritaryPrefixes,
                                                                               java.util.Map<java.lang.String,java.lang.String> additionalPrefixes)

Creates a new Map object containing all prefixes from both specified maps. When prefix mappings clash, the mappings from prioritaryPrefixes are used.

Parameters:

prioritaryPrefixes -

additionalPrefixes -

Returns:

readRdfSnippet

public static org.apache.jena.rdf.model.Model readRdfSnippet(java.io.InputStream in,
                                                             java.lang.String rdfLanguage)

Reads the InputStream into a Model. Sets a 'fantasy URI' as base URI and handles it gracefully if the model read from the string defines its own base URI. Special care is taken that the null relative URI ('<>') is replaced by the baseURI.

Parameters:

in -

rdfLanguage -

Returns:

a Model (possibly empty)

readRdfSnippet

public static org.apache.jena.rdf.model.Model readRdfSnippet(java.io.Reader in,
                                                             java.lang.String rdfLanguage)

Reads the InputStream into a Model. Sets a 'fantasy URI' as base URI and handles it gracefully if the model read from the string defines its own base URI. Special care is taken that the null relative URI ('<>') is replaced by the baseURI.

Parameters:

in -

rdfLanguage -

Returns:

a Model (possibly empty)

readRdfSnippet

public static org.apache.jena.rdf.model.Model readRdfSnippet(java.lang.String rdfAsString,
                                                             java.lang.String rdfLanguage)

Reads the specified string into a Model. Sets a 'fantasy URI' as base URI and handles it gracefully if the model read from the string defines its own base URI. Special care is taken that the null relative URI ('<>') is replaced by the baseURI.

Parameters:

rdfAsString -

rdfLanguage -

Returns:

a Model (possibly empty)

getURIPropertyForPropertyPath

public static java.net.URI getURIPropertyForPropertyPath(org.apache.jena.rdf.model.Model model,
                                                         java.net.URI resourceURI,
                                                         org.apache.jena.sparql.path.Path propertyPath)

Evaluates the path on the model obtained by dereferencing the specified resourceURI. If the path resolves to multiple resources, only the first one is returned.

Note: For more information on property paths, see http://jena.sourceforge.net/ARQ/property_paths.html
To create a Path object for the path "rdf:type/rdfs:subClassOf*":

 Path path = PathParser.parse("rdf:type/rdfs:subClassOf*", PrefixMapping.Standard);
 

Parameters:

resourceURI -

propertyPath -

Returns:

null if the model is empty or the path does not resolve to a node

Throws:

java.lang.IllegalArgumentException - if the node found by the path is not a URI

getURIPropertyForPropertyPath

public static java.net.URI getURIPropertyForPropertyPath(org.apache.jena.query.Dataset dataset,
                                                         java.net.URI resourceURI,
                                                         org.apache.jena.sparql.path.Path propertyPath)

Evaluates the path on all models in the dataset obtained by dereferencing the specified resourceURI. If the path resolves to multiple resources, only the first one is returned.

Note: For more information on property paths, see http://jena.sourceforge.net/ARQ/property_paths.html
To create a Path object for the path "rdf:type/rdfs:subClassOf*":

 Path path = PathParser.parse("rdf:type/rdfs:subClassOf*", PrefixMapping.Standard);
 

Parameters:

resourceURI -

propertyPath -

Returns:

null if the model is empty or the path does not resolve to a node

Throws:

java.lang.IllegalArgumentException - if the node found by the path is not a URI

getURIsForPropertyPath

public static java.util.Iterator<java.net.URI> getURIsForPropertyPath(org.apache.jena.rdf.model.Model model,
                                                                      java.net.URI resourceURI,
                                                                      org.apache.jena.sparql.path.Path propertyPath)

getURIsForPropertyPath

public static java.util.Iterator<java.net.URI> getURIsForPropertyPath(org.apache.jena.query.Dataset dataset,
                                                                      java.net.URI resourceURI,
                                                                      org.apache.jena.sparql.path.Path propertyPath)

getNodesForPropertyPathByQuery

public static java.util.Iterator<org.apache.jena.rdf.model.RDFNode> getNodesForPropertyPathByQuery(org.apache.jena.query.Dataset dataset,
                                                                                                   java.net.URI resourceURI,
                                                                                                   org.apache.jena.sparql.path.Path propertyPath)

Evaluates the property path by executing a sparql query.

Parameters:

dataset -

resourceURI -

propertyPath -

Returns:

setSparqlVars

public static java.lang.String setSparqlVars(java.lang.String stmt,
                                             java.lang.String var,
                                             java.lang.Object obj)

Sets the vars of a given sparql query Replaces every instance of ::var:: with the given object (this can only be an URI or a List of URIS at the moment)

Parameters:

stmt -

var - that will be replaced

obj - object that is replacing the variable

Returns:

replaced statement

setSparqlVars

public static java.lang.String setSparqlVars(java.lang.String stmt,
                                             java.util.Map<java.lang.String,java.lang.Object> varMap)

Sets the vars of a given sparql query Replaces every instance of ::var:: with the given object (this can only be an URI or a List of URIS at the moment)

Parameters:

stmt -

varMap - replaces the key with the object within the given statement

Returns:

replaced statement

getURIsForPropertyPathByQuery

public static java.util.Iterator<java.net.URI> getURIsForPropertyPathByQuery(org.apache.jena.query.Dataset dataset,
                                                                             java.net.URI resourceURI,
                                                                             org.apache.jena.sparql.path.Path propertyPath)

Evaluates a property path on the specified dataset by executing a sparql query and returns an iterator of URIs.

Parameters:

dataset -

resourceURI -

propertyPath -

Returns:

getStringPropertyForPropertyPath

public static java.lang.String getStringPropertyForPropertyPath(org.apache.jena.rdf.model.Model model,
                                                                java.net.URI resourceURI,
                                                                org.apache.jena.sparql.path.Path propertyPath)

Evaluates the path on the model obtained by dereferencing the specified resourceURI. If the path resolves to multiple resources, only the first one is returned.

Note: For more information on property paths, see http://jena.sourceforge.net/ARQ/property_paths.html
To create a Path object for the path "rdf:type/rdfs:subClassOf*":

 Path path = PathParser.parse("rdf:type/rdfs:subClassOf*", PrefixMapping.Standard);
 

Parameters:

resourceURI -

propertyPath -

Returns:

null if the model is empty or the path does not resolve to a node

getStringPropertyForPropertyPath

public static java.lang.String getStringPropertyForPropertyPath(org.apache.jena.query.Dataset dataset,
                                                                java.net.URI resourceURI,
                                                                org.apache.jena.sparql.path.Path propertyPath)

Evaluates the path on each model in the dataset obtained by dereferencing the specified resourceURI. If the path resolves to multiple resources, only the first one is returned.

Note: For more information on property paths, see http://jena.sourceforge.net/ARQ/property_paths.html
To create a Path object for the path "rdf:type/rdfs:subClassOf*":

 Path path = PathParser.parse("rdf:type/rdfs:subClassOf*", PrefixMapping.Standard);
 

Parameters:

resourceURI -

propertyPath -

Returns:

null if the model is empty or the path does not resolve to a node

toString

public static java.lang.String toString(org.apache.jena.graph.Node node)

Returns the literal lexical form of the specified node or null if the node is null.

Parameters:

node -

Returns:

toURI

public static java.net.URI toURI(org.apache.jena.graph.Node node)

Returns the URI of the specified node or null if the node is null. If the node does not represent a resource, an UnsupportedOperationException is thrown.

Parameters:

node -

Returns:

toURI

public static java.net.URI toURI(org.apache.jena.rdf.model.RDFNode node)

Returns the URI of the specified RDFNode or null if the node is null. If the node does not represent a resource, a ResourceRequiredException is thrown.

Parameters:

node -

Returns:

getNodeForPropertyPath

public static org.apache.jena.graph.Node getNodeForPropertyPath(org.apache.jena.rdf.model.Model model,
                                                                java.net.URI resourceURI,
                                                                org.apache.jena.sparql.path.Path propertyPath)

Returns the first RDF node found in the specified model for the specified property path.

Parameters:

model -

resourceURI -

propertyPath -

Returns:

getNodeForPropertyPath

public static org.apache.jena.graph.Node getNodeForPropertyPath(org.apache.jena.rdf.model.Model model,
                                                                org.apache.jena.graph.Node node,
                                                                org.apache.jena.sparql.path.Path propertyPath)

getNodeForPropertyPath

public static org.apache.jena.graph.Node getNodeForPropertyPath(org.apache.jena.query.Dataset dataset,
                                                                java.net.URI resourceURI,
                                                                org.apache.jena.sparql.path.Path propertyPath)

Returns the first RDF node found in the specified dataset for the specified property path.

Parameters:

dataset -

resourceURI -

propertyPath -

Returns:

getNodesForPropertyPath

public static java.util.Iterator<org.apache.jena.graph.Node> getNodesForPropertyPath(org.apache.jena.rdf.model.Model model,
                                                                                     java.net.URI resourceURI,
                                                                                     org.apache.jena.sparql.path.Path propertyPath)

Evaluates the specified path in the specified model, starting with the specified resourceURI.

Parameters:

model -

resourceURI -

propertyPath -

Returns:

getObjectsForPropertyPath

public static <T> java.util.Iterator<T> getObjectsForPropertyPath(org.apache.jena.rdf.model.Model model,
                                                                  java.net.URI resourceURI,
                                                                  org.apache.jena.sparql.path.Path propertyPath,
                                                                  java.util.function.Function<org.apache.jena.graph.Node,T> mapper)

Evaluates the specified path in the specified model, starting with the specified resourceURI.

Parameters:

model -

resourceURI -

propertyPath -

Returns:

getObjectStreamForPropertyPath

public static <T> java.util.stream.Stream<T> getObjectStreamForPropertyPath(org.apache.jena.rdf.model.Model model,
                                                                            java.net.URI resourceURI,
                                                                            org.apache.jena.sparql.path.Path propertyPath,
                                                                            java.util.function.Function<org.apache.jena.graph.Node,T> mapper)

getObjectsForPropertyPath

public static <T> java.util.Iterator<T> getObjectsForPropertyPath(org.apache.jena.query.Dataset dataset,
                                                                  java.net.URI resourceURI,
                                                                  org.apache.jena.sparql.path.Path propertyPath,
                                                                  java.util.function.Function<org.apache.jena.graph.Node,T> mapper)

Evaluates the specified path in the specified dataset, starting with the specified resourceURI.

Parameters:

dataset -

resourceURI -

propertyPath -

Returns:

getObjectStreamForPropertyPath

public static <T> java.util.stream.Stream<T> getObjectStreamForPropertyPath(org.apache.jena.query.Dataset dataset,
                                                                            java.net.URI resourceURI,
                                                                            org.apache.jena.sparql.path.Path propertyPath,
                                                                            java.util.function.Function<org.apache.jena.graph.Node,T> mapper)

Evaluates the specified path in the specified dataset, starting with the specified resourceURI.

Parameters:

dataset -

resourceURI -

propertyPath -

Returns:

getObjectStreamOfProperty

public static <T> java.util.stream.Stream<T> getObjectStreamOfProperty(org.apache.jena.query.Dataset dataset,
                                                                       java.net.URI resourceURI,
                                                                       java.net.URI property,
                                                                       java.util.function.Function<org.apache.jena.rdf.model.RDFNode,T> mapper)

Evaluates the specified path in the specified dataset, starting with the specified resourceURI.

Parameters:

dataset -

resourceURI -

propertyPath -

Returns:

getObjectStreamOfProperty

public static <T> java.util.stream.Stream<T> getObjectStreamOfProperty(org.apache.jena.rdf.model.Model model,
                                                                       java.net.URI resourceURI,
                                                                       java.net.URI property,
                                                                       java.util.function.Function<org.apache.jena.rdf.model.RDFNode,T> mapper)

getObjectsOfProperty

public static <T> java.util.List<T> getObjectsOfProperty(org.apache.jena.query.Dataset dataset,
                                                         java.net.URI resource,
                                                         java.net.URI property,
                                                         java.util.function.Function<org.apache.jena.rdf.model.RDFNode,T> resultMapper)

getFirstObjectOfProperty

public static <T> java.util.Optional<T> getFirstObjectOfProperty(org.apache.jena.query.Dataset dataset,
                                                                 java.net.URI resource,
                                                                 java.net.URI property,
                                                                 java.util.function.Function<org.apache.jena.rdf.model.RDFNode,T> resultMapper)

getFirstStatementMapped

public static <T> java.util.Optional<T> getFirstStatementMapped(org.apache.jena.query.Dataset dataset,
                                                                java.net.URI subject,
                                                                java.net.URI predicate,
                                                                java.net.URI object,
                                                                java.util.function.Function<org.apache.jena.rdf.model.Statement,T> resultMapper)

getNodesForPropertyPath

public static java.util.Iterator<org.apache.jena.graph.Node> getNodesForPropertyPath(org.apache.jena.query.Dataset dataset,
                                                                                     java.net.URI resourceURI,
                                                                                     org.apache.jena.sparql.path.Path propertyPath)

Evaluates the specified path in each model of the specified dataset, starting with the specified resourceURI.

Parameters:

dataset -

resourceURI -

propertyPath -

Returns:

toUriOrNull

public static java.net.URI toUriOrNull(java.lang.Object uriStringOrNull)

toStatementStream

public static java.util.stream.Stream<org.apache.jena.rdf.model.Statement> toStatementStream(org.apache.jena.query.Dataset dataset)

toStatementStream

public static java.util.stream.Stream<org.apache.jena.rdf.model.Statement> toStatementStream(org.apache.jena.query.Dataset dataset,
                                                                                             RdfUtils.ModelSelector modelSelector)

toStatementStream

public static java.util.stream.Stream<org.apache.jena.rdf.model.Statement> toStatementStream(org.apache.jena.rdf.model.Model model)

toModelStream

public static java.util.stream.Stream<org.apache.jena.rdf.model.Model> toModelStream(org.apache.jena.query.Dataset dataset)

toNamedModelStream

public static java.util.stream.Stream<RdfUtils.NamedModel> toNamedModelStream(org.apache.jena.query.Dataset dataset,
                                                                              boolean includeDefaultModel)

getDefaultModelSelector

public static RdfUtils.ModelSelector getDefaultModelSelector()

Returns a thread-safe, shared default model selector.

Returns:

visit

public static <T> java.util.Iterator<T> visit(org.apache.jena.query.Dataset dataset,
                                              RdfUtils.ModelVisitor<T> visitor,
                                              RdfUtils.ModelSelector modelSelector)

Calls the specified ModelVisitor's visit method on each model of the dataset that is selected by the ModelSelector. The rsults are collected in the returned iterator.

Type Parameters:

T -

Parameters:

dataset -

visitor -

modelSelector -

Returns:

visit

public static <T> java.util.Iterator<T> visit(org.apache.jena.query.Dataset dataset,
                                              RdfUtils.ModelVisitor<T> visitor)

visitFlattenedToList

public static <E,T extends java.util.Collection<E>> java.util.List<E> visitFlattenedToList(org.apache.jena.query.Dataset dataset,
                                                                                           RdfUtils.ModelVisitor<T> visitor,
                                                                                           RdfUtils.ModelSelector modelSelector)

Visits all models and flattens the collections returned by the visitor into one list.

Type Parameters:

T -

Parameters:

dataset -

visitor -

modelSelector -

Returns:

visitFlattenedToList

public static <E,T extends java.util.Collection<E>> java.util.List<E> visitFlattenedToList(org.apache.jena.query.Dataset dataset,
                                                                                           RdfUtils.ModelVisitor<T> visitor)

visitFlattenedToNodeIterator

public static org.apache.jena.rdf.model.NodeIterator visitFlattenedToNodeIterator(org.apache.jena.query.Dataset dataset,
                                                                                  RdfUtils.ModelVisitor<org.apache.jena.rdf.model.NodeIterator> visitor,
                                                                                  RdfUtils.ModelSelector modelSelector)

Visits all models and flattens the NodeIterator returned by the visitor into one. Returns null if all visitors return null.

Parameters:

dataset -

visitor -

modelSelector -

Returns:

visitFlattenedToNodeIterator

public static org.apache.jena.rdf.model.NodeIterator visitFlattenedToNodeIterator(org.apache.jena.query.Dataset dataset,
                                                                                  RdfUtils.ModelVisitor<org.apache.jena.rdf.model.NodeIterator> visitor)

findFirst

public static <T> T findFirst(org.apache.jena.query.Dataset dataset,
                              RdfUtils.ModelVisitor<T> visitor,
                              RdfUtils.ModelSelector modelSelector)

Returns the first non-null result obtained by calling the specified ModelVisitor's visit method in the order defined by the specified ModelSelector.

Type Parameters:

T -

Parameters:

dataset -

visitor -

modelSelector -

Returns:

findFirst

public static <T> T findFirst(org.apache.jena.query.Dataset dataset,
                              RdfUtils.ModelVisitor<T> visitor)

findOne

public static <T> T findOne(org.apache.jena.query.Dataset dataset,
                            RdfUtils.ModelVisitor<T> visitor,
                            RdfUtils.ModelSelector modelSelector,
                            boolean allowSame)

Returns the result obtained by calling the specified ModelVisitor's visit method in the order defined by the specified ModelSelector. Throws an IncorrectPropertyCountException if no result or more than one result is found. ModelVisitors should implement the same exception strategy.

Type Parameters:

T -

Parameters:

dataset -

visitor -

modelSelector -

allowSame - if true, multiple results will be checked with equals() and if they are are equal, no exception is thrown

Returns:

findOne

public static <T> T findOne(org.apache.jena.query.Dataset dataset,
                            RdfUtils.ModelVisitor<T> visitor,
                            boolean allowSame)

applyMethod

public static <T> T applyMethod(org.apache.jena.query.Dataset dataset,
                                RdfUtils.ModelVisitor<T> visitor,
                                RdfUtils.ModelSelector modelSelector,
                                RdfUtils.ResultCombiner<T> resultCombiner)

Returns the result obtained by calling the specified ModelVisitor's visit method where the result is combined with the ResultCombiner's combine method.

Type Parameters:

T -

Parameters:

dataset -

visitor -

modelSelector -

resultCombiner -

Returns:

applyMethod

public static <T> T applyMethod(org.apache.jena.query.Dataset dataset,
                                RdfUtils.ModelVisitor<T> visitor,
                                RdfUtils.ResultCombiner<T> resultCombiner)

findFirstPropertyFromResource

public static org.apache.jena.rdf.model.RDFNode findFirstPropertyFromResource(org.apache.jena.query.Dataset dataset,
                                                                              java.net.URI resourceURI,
                                                                              org.apache.jena.rdf.model.Property p)

Finds the first resource which is a specified property of a specified resource.

Parameters:

dataset - Dataset to look into

resourceURI -

p -

Returns:

URI of the resource

findOnePropertyFromResource

public static org.apache.jena.rdf.model.RDFNode findOnePropertyFromResource(org.apache.jena.query.Dataset dataset,
                                                                            java.net.URI resourceURI,
                                                                            org.apache.jena.rdf.model.Property p)

Finds resource which is a specified property of a specified resource. If multiple (non equal) resources are found an exception is thrown.

Parameters:

dataset - Dataset to look into

resourceURI -

p -

Returns:

URI of the resource

findFirstPropertyFromResource

public static org.apache.jena.rdf.model.RDFNode findFirstPropertyFromResource(org.apache.jena.query.Dataset dataset,
                                                                              org.apache.jena.rdf.model.Resource resource,
                                                                              org.apache.jena.rdf.model.Property p)

findOnePropertyFromResource

public static org.apache.jena.rdf.model.RDFNode findOnePropertyFromResource(org.apache.jena.query.Dataset dataset,
                                                                            org.apache.jena.rdf.model.Resource resource,
                                                                            org.apache.jena.rdf.model.Property p)

findFirstPropertyFromResource

public static org.apache.jena.rdf.model.RDFNode findFirstPropertyFromResource(org.apache.jena.rdf.model.Model model,
                                                                              java.net.URI resourceURI,
                                                                              org.apache.jena.rdf.model.Property property)

Finds the first resource which is a specified property of a specified resource.

Parameters:

model - Model to look into

resourceURI -

property -

Returns:

URI of the resource

findOnePropertyFromResource

public static org.apache.jena.rdf.model.RDFNode findOnePropertyFromResource(org.apache.jena.rdf.model.Model model,
                                                                            java.net.URI resourceURI,
                                                                            org.apache.jena.rdf.model.Property property)

Finds resource which is a specified property of a specified resource. If multiple (non equal) resources are found an exception is thrown.

Parameters:

model - Model to look into

resourceURI -

property -

Returns:

URI of the resource

findFirstPropertyOf

public static org.apache.jena.rdf.model.RDFNode findFirstPropertyOf(org.apache.jena.rdf.model.Resource resource,
                                                                    org.apache.jena.rdf.model.Property property)

findFirstPropertyOfO

public static java.util.Optional<org.apache.jena.rdf.model.RDFNode> findFirstPropertyOfO(org.apache.jena.rdf.model.Resource resource,
                                                                                         org.apache.jena.rdf.model.Property property)

findFirstPropertyFromResource

public static org.apache.jena.rdf.model.RDFNode findFirstPropertyFromResource(org.apache.jena.rdf.model.Model model,
                                                                              org.apache.jena.rdf.model.Resource resource,
                                                                              org.apache.jena.rdf.model.Property property)

findOnePropertyFromResource

public static org.apache.jena.rdf.model.RDFNode findOnePropertyFromResource(org.apache.jena.rdf.model.Model model,
                                                                            org.apache.jena.rdf.model.Resource resource,
                                                                            org.apache.jena.rdf.model.Property property)

findOneSubjectResource

public static org.apache.jena.rdf.model.Resource findOneSubjectResource(org.apache.jena.query.Dataset dataset,
                                                                        org.apache.jena.rdf.model.Property property,
                                                                        org.apache.jena.rdf.model.RDFNode object)

findSubjectResources

public static java.util.List<org.apache.jena.rdf.model.Resource> findSubjectResources(org.apache.jena.query.Dataset dataset,
                                                                                      org.apache.jena.rdf.model.Property property,
                                                                                      org.apache.jena.rdf.model.RDFNode object)

findOneSubjectResource

public static org.apache.jena.rdf.model.Resource findOneSubjectResource(org.apache.jena.rdf.model.Model model,
                                                                        org.apache.jena.rdf.model.Property property,
                                                                        org.apache.jena.rdf.model.RDFNode object)

findOneOrNoSubjectResource

public static org.apache.jena.rdf.model.Resource findOneOrNoSubjectResource(org.apache.jena.rdf.model.Model model,
                                                                            org.apache.jena.rdf.model.Property property,
                                                                            org.apache.jena.rdf.model.RDFNode object)

findFirstSubjectUri

public static java.net.URI findFirstSubjectUri(org.apache.jena.rdf.model.Model model,
                                               org.apache.jena.rdf.model.Property property,
                                               org.apache.jena.rdf.model.RDFNode object,
                                               boolean allowMultiple,
                                               boolean allowNone)

Finds the first triple in the specified model that has the specified propery and object. The subject is expected to be a resource.

Parameters:

model -

property -

object -

allowMultiple - if false, will throw an IllegalArgumentException if more than one triple is found

allowNone - if false, will throw an IllegalArgumentException if no triple is found

Returns:

findFirstObjectUri

public static java.net.URI findFirstObjectUri(org.apache.jena.rdf.model.Model model,
                                              org.apache.jena.rdf.model.Property property,
                                              org.apache.jena.rdf.model.RDFNode object,
                                              boolean allowMultiple,
                                              boolean allowNone)

createNewGraphURI

public static java.net.URI createNewGraphURI(java.lang.String baseURI,
                                             java.lang.String toAppend,
                                             int length,
                                             org.apache.jena.query.Dataset dataset)

Creates a new graph URI for the specified dataset by appending a specified string (toAppend) and then n alphanumeric characters to the specified String. It is guaranteed that the resulting URI is not used as a graph name in the specified dataset. Note that the implementation is not synchronized, so concurrent executions of the method may result in identical URIs being returned. If both the specified baseURI and the toAppend string contain a hash sign ('#'), the hash-part will be removed from the base uri before the result will be crated.

Parameters:

baseURI - the URI to be extended.

toAppend - a string that will be appended directly to the URI.

length - number of alphanumeric characters that are appended to toAppend.

dataset - the dataset that will be checked to determine if the resulting URI is new.

Returns:

an URI that is previously unused as a graph URI.

createNewGraphURI

public static java.net.URI createNewGraphURI(java.lang.String baseURI,
                                             java.lang.String toAppend,
                                             int length,
                                             RdfUtils.GraphNameCheck check)

Creates a new graph URI for the specified dataset by appending a specified string (toAppend) and then n alphanumeric characters to the specified String. It is guaranteed that the resulting URI is not used as a graph name in the specified dataset. Note that the implementation is not synchronized, so concurrent executions of the method may result in identical URIs being returned. If both the specified baseURI and the toAppend string contain a hash sign ('#'), the hash-part will be removed from the base uri before the result will be crated.

Parameters:

baseURI - the URI to be extended.

toAppend - a string that will be appended directly to the URI.

length - number of alphanumeric characters that are appended to toAppend.

Returns:

an URI that is previously unused as a graph URI.

addAllStatements

public static void addAllStatements(org.apache.jena.rdf.model.Model toModel,
                                    org.apache.jena.rdf.model.Model fromModel)

addPrefixMapping

public static void addPrefixMapping(org.apache.jena.rdf.model.Model toModel,
                                    org.apache.jena.rdf.model.Model fromModel)

getModelNames

public static java.util.List<java.lang.String> getModelNames(org.apache.jena.query.Dataset dataset)

writeDatasetToString

public static java.lang.String writeDatasetToString(org.apache.jena.query.Dataset dataset,
                                                    org.apache.jena.riot.Lang lang)

readDatasetFromString

public static org.apache.jena.query.Dataset readDatasetFromString(java.lang.String data,
                                                                  org.apache.jena.riot.Lang lang)

getModelsOfResource

public static java.util.Set<java.lang.String> getModelsOfResource(org.apache.jena.query.Dataset dataset,
                                                                  org.apache.jena.rdf.model.RDFNode resource)

Returns the names of all models that mention the specified resource.

Parameters:

resource -

Returns:

getModelsOfSubjectResource

public static java.util.Set<java.lang.String> getModelsOfSubjectResource(org.apache.jena.query.Dataset dataset,
                                                                         org.apache.jena.rdf.model.RDFNode resource)

Returns the names of all models that mention the specified resource in the subject of a triple

Parameters:

resource -

Returns:

addDatasetToDataset

public static org.apache.jena.query.Dataset addDatasetToDataset(org.apache.jena.query.Dataset baseDataset,
                                                                org.apache.jena.query.Dataset toBeAddedtoBase,
                                                                boolean replaceNamedModel)

Adds the second dataset to the first one, merging default models and models with identical name.

Parameters:

baseDataset -

toBeAddedtoBase -

replaceNamedModel - if true, named graphs are not merged but replaced

Returns:

the modified baseDataset

addDatasetToDataset

public static org.apache.jena.query.Dataset addDatasetToDataset(org.apache.jena.query.Dataset baseDataset,
                                                                org.apache.jena.query.Dataset toBeAddedtoBase)

Adds the second dataset to the first one, merging default models and models with identical name.

Parameters:

baseDataset -

toBeAddedtoBase -

Returns:

the modified baseDataset

mergeAllDataToSingleModel

public static org.apache.jena.rdf.model.Model mergeAllDataToSingleModel(org.apache.jena.query.Dataset ds)

copyDatasetTriplesToModel

public static void copyDatasetTriplesToModel(org.apache.jena.query.Dataset dataset,
                                             org.apache.jena.rdf.model.Model model)

Adds all triples of the dataset to the model.

Parameters:

dataset -

model -

condenseModelByIterativeTesting

public static org.apache.jena.rdf.model.Model condenseModelByIterativeTesting(org.apache.jena.rdf.model.Model model,
                                                                              java.util.function.Function<org.apache.jena.rdf.model.Model,java.lang.Boolean> isModelValidTest)

Condense a model to a minimum of statements by iteratively removing single statements and testing if the condensed model is still valid. A test function is used that can be passed to test for the validity of the model in every step.

Parameters:

model - input model to be condensed

isModelValidTest - test function should return true if the model is valid (previous condensation step was ok) and false otherwise

Returns:

the condensed model