org.w3c.rdf.model
Interface Model

All Superinterfaces:

RDFNode, Resource

All Known Subinterfaces:

SetModel, VirtualModel

All Known Implementing Classes:

ModelImpl, ModelImpl

public interface Model

extends Resource

This is a programming interface to an RDF model. An RDF model is a directed labeled graph. This interface represents a model as container of triples. RDF should implement getURI() according to the digest algorithm provided in RDFDigestUtil.

See Also:

org.w3c.tools.crypt.DigestUtil, org.w3c.rdf.util.RDFDigestUtil

Method Summary

void	add(Statement t) Adds a new triple to the model.
boolean	contains(Statement t) Tests if the model contains the given triple.
Model	create() Creates empty model of the same Class
Model	duplicate() Clone the model.
java.util.Enumeration	elements() Enumerate triples
Model	find(Resource subject, Resource predicate, RDFNode object) General method to search for triples.
NodeFactory	getNodeFactory() Returns the node factory for this model
java.lang.String	getSourceURI() Returns current base URI setting.
boolean	isEmpty() true if the model contains no triples
boolean	isMutable() True if the model supports add() and remove() methods.
void	remove(Statement t) Removes the triple from the model.
void	setSourceURI(java.lang.String uri) Set a base URI for the model.
int	size() Number of triples in the model

Methods inherited from interface org.w3c.rdf.model.Resource

getLocalName, getNamespace, getURI

Methods inherited from interface org.w3c.rdf.model.RDFNode

getLabel

Method Detail

setSourceURI

public void setSourceURI(java.lang.String uri)
                  throws ModelException

Set a base URI for the model.

getSourceURI

public java.lang.String getSourceURI()
                              throws ModelException

Returns current base URI setting.

size

public int size()
         throws ModelException

Number of triples in the model

Returns:

number of triples, -1 if unknown

isEmpty

public boolean isEmpty()
                throws ModelException

true if the model contains no triples

elements

public java.util.Enumeration elements()
                               throws ModelException

Enumerate triples

contains

public boolean contains(Statement t)
                 throws ModelException

Tests if the model contains the given triple.

Returns:

true if the triple belongs to the model; false otherwise.

add

public void add(Statement t)
         throws ModelException

Adds a new triple to the model.

remove

public void remove(Statement t)
            throws ModelException

Removes the triple from the model.

isMutable

public boolean isMutable()
                  throws ModelException

True if the model supports add() and remove() methods. A model may change behavior of this function over time.

find

public Model find(Resource subject,
                  Resource predicate,
                  RDFNode object)
           throws ModelException

General method to search for triples. null input for any parameter will match anything.

Example: Model result = m.find( null, RDF.type, m.getNodeFactory().createResource("http://...#MyClass") )

finds all instances of the class MyClass

duplicate

public Model duplicate()
                throws ModelException

Clone the model.

create

public Model create()
             throws ModelException

Creates empty model of the same Class

getNodeFactory

public NodeFactory getNodeFactory()
                           throws ModelException

Returns the node factory for this model