Module org.apache.jena.arq

Package 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	Description
GraphUtils()

Method Summary

Modifier and Type	Method	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 List<Resource>	findRootsByType(Model model, Resource atype)
static String	fmtURI(Resource r)
static RDFNode	getAsRDFNode(Resource r, Property p)
static String	getAsStringValue(Resource r, Property p)	Get a string literal or a URI as a string.
static boolean	getBooleanValue(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)	Get a string literal.
static List<Resource>	listResourcesByType(Model model, Resource type)
static List<RDFNode>	multiValue(Resource r, Property p)
static List<String>	multiValueAsString(Resource r, Property p)	Get a list of the URIs (as strings) and strings
static List<Resource>	multiValueResource(Resource r, Property p)
static List<String>	multiValueString(Resource r, Property p)	Get all the literals for a resource-property.
static List<String>	multiValueURI(Resource r, Property p)

Methods inherited from class java.lang.Object

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

Constructor Details

GraphUtils

public GraphUtils()

Method Details

multiValueString

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

Get all the literals for a resource-property.

multiValueAsString

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

Get a list of the URIs (as strings) and strings

See Also:

• getAsStringValue(org.apache.jena.rdf.model.Resource, org.apache.jena.rdf.model.Property)

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)

getBooleanValue

public static boolean getBooleanValue(Resource r,
 Property p)

getStringValue

public static String getStringValue(Resource r,
 Property p)

Get a string literal.

getAsStringValue

public static String getAsStringValue(Resource r,
 Property p)

Get a string literal or a URI as a string.

getAsRDFNode

public static RDFNode getAsRDFNode(Resource r,
 Property p)

getResourceValue

public static Resource getResourceValue(Resource r,
 Property p)

listResourcesByType

public static List<Resource> listResourcesByType(Model model,
 Resource type)

getResourceByType

public static Resource getResourceByType(Model model,
 Resource type)

findRootByType

public static Resource findRootByType(Model model,
 Resource atype)

findRootsByType

public static List<Resource> findRootsByType(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.