org.openrdf.sesame.query.serql.parser
Class ReifiedPathElement

java.lang.Object
  org.openrdf.sesame.query.serql.parser.PathElement
      org.openrdf.sesame.query.serql.parser.ReifiedPathElement

public class ReifiedPathElement

extends PathElement

Represents a reified statement. A Reified_stat is equal to a Path_expr, but without a tail. This means the right node of a Reified_stat is equal to a Path_expr without edges and right nodes. A Reified_stat has an extra instance variable, i.e. its identifier. A Reified_stat {S} P {O} with identifier X expands to X rdf:type rdf:Statement, X rdf:subject S, X rdf:predicate P, X rdf:object O and S P O.

Version:

$Revision: 1.5.4.2 $

Author:

Peter van 't Hof, Arjohn Kampman

Constructor Summary

ReifiedPathElement(Var id, List leftNode, Var edge, List rightNode)
Creates a new ReifiedPathElement.

Method Summary

Var	getId() Gets the identifier of this reified statement.
List	getTriplePatterns() Creates a list of triple patterns that can represent this path element.

Methods inherited from class org.openrdf.sesame.query.serql.parser.PathElement

getEdge, getObjectVars, getSubjectVars, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ReifiedPathElement

public ReifiedPathElement(Var id,
                          List leftNode,
                          Var edge,
                          List rightNode)

Creates a new ReifiedPathElement.

Parameters:

id - Id of this reified statement.

leftNode - Left node of this reified statement.

edge - Edge of this reified statement.

rightNode - Right node of this reified statement.

Method Detail

getId

public Var getId()

Gets the identifier of this reified statement.

Returns:

Id of this Reified_stat.

getTriplePatterns

public List getTriplePatterns()

Description copied from class: PathElement

Creates a list of triple patterns that can represent this path element.

Overrides:

getTriplePatterns in class PathElement

Returns:

A List of TriplePattern objects.