org.apache.jena.sparql.util.graph

Class GraphUtils

java.lang.Object

org.apache.jena.sparql.util.graph.GraphUtils

public class GraphUtils
extends Object

Graph utilities. See also GraphFactory.

Constructor Summary

Constructors

Constructor and Description
GraphUtils()

Method Summary

Modifier and Type	Method and Description
static Iterator<Node>	allNodes(Graph graph) All subjects and objects, no duplicates.
static boolean	atmostOneProperty(Resource r, Property p)
static boolean	exactlyOneProperty(Resource r, Property p)
static Resource	findRootByType(Model model, Resource atype)
static String	fmtURI(Resource r)
static String	getAsStringValue(Resource r, Property p)
static Resource	getResourceByType(Model model, Resource type)
static Resource	getResourceValue(Resource r, Property p)
static String	getStringValue(Resource r, Property p)
static List<RDFNode>	multiValue(Resource r, Property p)
static List<Resource>	multiValueResource(Resource r, Property p)
static List<String>	multiValueString(Resource r, Property p)
static List<String>	multiValueURI(Resource r, Property p)
static org.apache.jena.atlas.iterator.Iter<Quad>	triples2quads(Node graphNode, Iterator<Triple> iter) Convert an iterator of triples into quads for the specificed graph name.
static Iterator<Quad>	triples2quadsDftGraph(Iterator<Triple> iter) Convert an iterator of triples into quads for the default graph.

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphUtils

public GraphUtils()

Method Detail

triples2quadsDftGraph

public static Iterator<Quad> triples2quadsDftGraph(Iterator<Triple> iter)

Convert an iterator of triples into quads for the default graph. This is Quad.defaultGraphIRI, not Quad.defaultGraphNodeGenerated, which is for quads outside a dataset, usually the output of parsers.

triples2quads

public static org.apache.jena.atlas.iterator.Iter<Quad> triples2quads(Node graphNode,
                                                                      Iterator<Triple> iter)

Convert an iterator of triples into quads for the specificed graph name.

multiValueString

public static List<String> multiValueString(Resource r,
                                            Property p)

multiValue

public static List<RDFNode> multiValue(Resource r,
                                       Property p)

multiValueResource

public static List<Resource> multiValueResource(Resource r,
                                                Property p)

multiValueURI

public static List<String> multiValueURI(Resource r,
                                         Property p)

exactlyOneProperty

public static boolean exactlyOneProperty(Resource r,
                                         Property p)

atmostOneProperty

public static boolean atmostOneProperty(Resource r,
                                        Property p)

getStringValue

public static String getStringValue(Resource r,
                                    Property p)

getAsStringValue

public static String getAsStringValue(Resource r,
                                      Property p)

getResourceValue

public static Resource getResourceValue(Resource r,
                                        Property p)

getResourceByType

public static Resource getResourceByType(Model model,
                                         Resource type)

findRootByType

public static Resource findRootByType(Model model,
                                      Resource atype)

fmtURI

public static String fmtURI(Resource r)

allNodes

public static Iterator<Node> allNodes(Graph graph)

All subjects and objects, no duplicates.