Module org.apache.jena.arq

Package org.apache.jena.sparql.util

Class ModelUtils

java.lang.Object

org.apache.jena.sparql.util.ModelUtils

public class ModelUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
ModelUtils()

Method Summary

Modifier and Type	Method	Description
static RDFNode	convertGraphNodeToRDFNode(Node node)	Convert a Node (graph SPI) to an RDFNode (model API)
static RDFNode	convertGraphNodeToRDFNode(Node node, Model model)	Convert a Node (graph SPI) to an RDFNode (model API), anchored to the model if possible.
static ModelCollector	intersectCollector()
static boolean	isValidAsStatement(Node s, Node p, Node o)	Determines whether a valid Statement can be formed from the given Subject, Predicate and Object
static Iterator<Triple>	statementsToTriples(Iterator<Statement> it)
static StmtIterator	triplesToStatements(Iterator<Triple> it, Model refModel)
static Statement	tripleToStatement(Model model, Triple t)
static ModelCollector	unionCollector()

Methods inherited from class java.lang.Object

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

Constructor Details

ModelUtils

public ModelUtils()

Method Details

convertGraphNodeToRDFNode

public static RDFNode convertGraphNodeToRDFNode(Node node,
 Model model)

Convert a Node (graph SPI) to an RDFNode (model API), anchored to the model if possible.

Parameters:

node -

model - (may be null)

Returns:

RDFNode

convertGraphNodeToRDFNode

public static RDFNode convertGraphNodeToRDFNode(Node node)

Convert a Node (graph SPI) to an RDFNode (model API)

Parameters:

node -

Returns:

RDFNode

tripleToStatement

public static Statement tripleToStatement(Model model,
 Triple t)

isValidAsStatement

public static boolean isValidAsStatement(Node s,
 Node p,
 Node o)

Determines whether a valid Statement can be formed from the given Subject, Predicate and Object

This function reflects the fact that the Triple API is flexible in allowing any Node type in any position (including non-RDF node types like Variable) and as such not all Triples can be safely converted into Statements

Parameters:

s - Subject

p - Predicate

o - Object

Returns:

True if a valid Statement can be formed

triplesToStatements

public static StmtIterator triplesToStatements(Iterator<Triple> it,
 Model refModel)

intersectCollector

public static ModelCollector intersectCollector()

unionCollector

public static ModelCollector unionCollector()

statementsToTriples

public static Iterator<Triple> statementsToTriples(Iterator<Statement> it)