org.jrdf.graph
Interface BlankNode

All Superinterfaces:

Node, ObjectNode, Serializable, SubjectNode, TypedNodeVisitable

All Known Implementing Classes:

AbstractBlankNode

public interface BlankNode

extends SubjectNode, ObjectNode, TypedNodeVisitable

RDF blank node. Note that blank nodes are deliberately devoid of indentifying attributes. Blank nodes, can either be subjects or objects.

Version:

$Revision: 1.1 $

Author:

Simon Raboczi, Andrew Newman

Method Summary

boolean	equals(Object obj) While the internal structure of a BlankNode is not defined equality between two nodes should be able to be determined.
int	hashCode() Returns a hash-code value for this BlankNode.

Methods inherited from interface org.jrdf.graph.TypedNodeVisitable

accept

Method Detail

hashCode

public int hashCode()

Returns a hash-code value for this BlankNode. While the implementation is not defined, if there is a blank node identifier then it should be the hash code generated from this. Hash code generation should follow the normal contract.

Returns:

a hash-code value for this blank node.

equals

public boolean equals(Object obj)

While the internal structure of a BlankNode is not defined equality between two nodes should be able to be determined. In some representations this equality would be defined by a blank node identifier.

Parameters:

obj - the reference object with which to compare.

Returns:

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