org.jrdf.graph.local.mem
Class AbstractResource

java.lang.Object
  org.jrdf.graph.local.mem.AbstractResource

All Implemented Interfaces:

Serializable, BlankNode, LocalizedNode, Node, ObjectNode, PredicateNode, Resource, SubjectNode, TypedNodeVisitable, URIReference

Direct Known Subclasses:

BlankNodeResourceImpl, URIReferenceResourceImpl

public abstract class AbstractResource
extends Object
implements Resource, LocalizedNode

See Also:

Serialized Form

Constructor Summary

protected	AbstractResource()
	AbstractResource(Long newResource, ReadWriteGraph newReadWriteGraph)

Method Summary

void	addValue(PredicateNode predicate, ObjectNode object) Add a new triple with this as the subject, the given predicate and object.
Long	getId() Retrieves an internal identifier for a node.
ClosableIterator<ObjectNode>	getObjects(PredicateNode predicate) With this as the subject and using the given predicate return all the objects.
ClosableIterator<SubjectNode>	getSubjects(PredicateNode predicate) With this as the object and using the given predicate return all the subjects.
void	removeSubject(SubjectNode subject, PredicateNode predicate) Remove the triple with this as the object, the given subject and predicate.
void	removeValue(PredicateNode predicate, ObjectNode object) Remove the triple with this as the subject, the given predicate and object.
void	removeValues(PredicateNode predicate) Remove all the triples with this as the subject and the given predicate.
void	setValue(PredicateNode predicate, ObjectNode object) Remove any other triples with this as the subject, the given predicate and any object and add a new triple with this as the subject and the given predicate and object.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jrdf.graph.Resource

getUnderlyingNode, isURIReference

Methods inherited from interface org.jrdf.graph.URIReference

equals, getURI, hashCode

Methods inherited from interface org.jrdf.graph.TypedNodeVisitable

accept

Methods inherited from interface org.jrdf.graph.TypedNodeVisitable

accept

Methods inherited from interface org.jrdf.graph.TypedNodeVisitable

accept

Methods inherited from interface org.jrdf.graph.BlankNode

equals, hashCode

Methods inherited from interface org.jrdf.graph.TypedNodeVisitable

accept

Methods inherited from interface org.jrdf.graph.TypedNodeVisitable

accept

Constructor Detail

AbstractResource

protected AbstractResource()

AbstractResource

public AbstractResource(Long newResource,
                        ReadWriteGraph newReadWriteGraph)

Method Detail

getId

public Long getId()

Description copied from interface: LocalizedNode

Retrieves an internal identifier for a node.

Specified by:

getId in interface LocalizedNode

Returns:

A numeric identifier for a node.

addValue

public void addValue(PredicateNode predicate,
                     ObjectNode object)
              throws GraphException

Description copied from interface: Resource

Add a new triple with this as the subject, the given predicate and object.

Specified by:

addValue in interface Resource

Parameters:

predicate - the existing predicate in the graph to create the triple with.

object - the existing object in the graph to create the triple with.

Throws:

GraphException - if the predicate or object do not exist in the graph.

setValue

public void setValue(PredicateNode predicate,
                     ObjectNode object)
              throws GraphException

Description copied from interface: Resource

Remove any other triples with this as the subject, the given predicate and any object and add a new triple with this as the subject and the given predicate and object. This many that multiple object values will be replaced by a single object value.

Specified by:

setValue in interface Resource

Parameters:

predicate - the existing predicate in the graph to set.

object - the existing object in the graph to set.

Throws:

GraphException - if the predicate or object do not exist in the graph.

removeValue

public void removeValue(PredicateNode predicate,
                        ObjectNode object)
                 throws GraphException

Description copied from interface: Resource

Remove the triple with this as the subject, the given predicate and object.

Specified by:

removeValue in interface Resource

Parameters:

predicate - the existing predicate in the graph to remove.

object - the existing object in the graph to remove.

Throws:

GraphException - if the predicate or object does not exist in the graph.

removeValues

public void removeValues(PredicateNode predicate)
                  throws GraphException

Description copied from interface: Resource

Remove all the triples with this as the subject and the given predicate.

Specified by:

removeValues in interface Resource

Parameters:

predicate - the existing predicate in the graph.

Throws:

GraphException - if the predicate does not exist in the graph.

removeSubject

public void removeSubject(SubjectNode subject,
                          PredicateNode predicate)
                   throws GraphException

Description copied from interface: Resource

Remove the triple with this as the object, the given subject and predicate.

Specified by:

removeSubject in interface Resource

Parameters:

subject - the existing subject in the graph to remove.

predicate - the existing predicate in the graph to remove.

Throws:

GraphException - if the subject or predicate do not exist in the graph.

getObjects

public ClosableIterator<ObjectNode> getObjects(PredicateNode predicate)
                                        throws GraphException

Description copied from interface: Resource

With this as the subject and using the given predicate return all the objects.

Specified by:

getObjects in interface Resource

Parameters:

predicate - the existing predicate in the graph to use to find the objects.

Returns:

all the objects in the graph with this resource as the subject and the given predicate.

Throws:

GraphException - if the subject or predicate do not exist in the graph.

getSubjects

public ClosableIterator<SubjectNode> getSubjects(PredicateNode predicate)
                                          throws GraphException

Description copied from interface: Resource

With this as the object and using the given predicate return all the subjects.

Specified by:

getSubjects in interface Resource

Parameters:

predicate - the existing predicate in the graph to use to find the subjects.

Returns:

all the objects in the graph with this resource as the subject and the given predicate.

Throws:

GraphException - if the subject or predicate do not exist in the graph.