org.jrdf.graph
Class AbstractURIReference

java.lang.Object
  org.jrdf.graph.AbstractURIReference

All Implemented Interfaces:

Serializable, Node, ObjectNode, PredicateNode, SubjectNode, TypedNodeVisitable, URIReference

Direct Known Subclasses:

URIReferenceImpl

public abstract class AbstractURIReference
extends Object
implements URIReference, Serializable

A base implementation of an RDF URIReference.

Version:

$Revision: 1063 $

Author:

Simon Raboczi, Andrew Newman

See Also:

Serialized Form

Constructor Summary

protected	AbstractURIReference()
protected	AbstractURIReference(URI newUri) Constructor.
protected	AbstractURIReference(URI newUri, boolean validate) Constructor.

Method Summary

void	accept(TypedNodeVisitor visitor) Accept a call from a TypedNodeVisitor.
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
URI	getURI() The URI identifiying this resource.
int	hashCode() Returns a hash-code value for this URI Reference.
String	toString() Provide a legible representation of a URI reference.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AbstractURIReference

protected AbstractURIReference()

AbstractURIReference

protected AbstractURIReference(URI newUri)
                        throws IllegalArgumentException

Constructor.

Enforces a non-null and absolute newUri parameter.

Parameters:

newUri - the URI to use in creation.

Throws:

IllegalArgumentException - if newUri is null or not absolute

AbstractURIReference

protected AbstractURIReference(URI newUri,
                               boolean validate)
                        throws IllegalArgumentException

Constructor.

Enforces a non-null parameter. Use only for applications where enforcement of valid URIs is too expensive or not necessary.

Parameters:

newUri - the URI to use in creation.

validate - whether to enforce valid RDF URIs.

Throws:

IllegalArgumentException - if newUri is not absolute and validate is true.

Method Detail

getURI

public URI getURI()

The URI identifiying this resource.

Specified by:

getURI in interface URIReference

Returns:

the URI identifying this resource.

accept

public void accept(TypedNodeVisitor visitor)

Accept a call from a TypedNodeVisitor.

Specified by:

accept in interface TypedNodeVisitable

Parameters:

visitor - the object doing the visiting.

hashCode

public int hashCode()

Description copied from interface: URIReference

Returns a hash-code value for this URI Reference. This is the hash code of the URI.

Specified by:

hashCode in interface URIReference

Overrides:

hashCode in class Object

Returns:

a hash-code value for this literal.

toString

public String toString()

Provide a legible representation of a URI reference. Currently, just the URI of the reference.

Overrides:

toString in class Object

Returns:

the uri property called toString() on.

equals

public boolean equals(Object obj)

Description copied from interface: URIReference

Indicates whether some other object is "equal to" this one.

A URI Reference is equal to another URI Reference if their URIs are equal to one another, character by character.

Specified by:

equals in interface URIReference

Overrides:

equals in class Object

Parameters:

obj - the reference object with which to compare.

Returns:

true if this object is the same as the obj argument; false otherwise.