private ISparqlPath TryParsePathAlternative(SparqlQueryParserContext context, Queue<IToken> tokens)
{
ISparqlPath path = this.TryParsePathSequence(context, tokens);
IToken next;
while (tokens.Count > 0)
{
next = tokens.Dequeue();
if (next.TokenType == Token.BITWISEOR)
{
path = new AlternativePath(path, this.TryParsePathSequence(context, tokens));
}
else
{
throw new RdfParseException("Unexpected Token '" + next.GetType().ToString() + "' encountered, expected a valid path sequence/alternative token", next);
}
}
return path;
}
public void SparqlPropertyPathTransformationAlternative()
{
AlternativePath path = new AlternativePath(new Property(this._factory.CreateUriNode(new Uri(NamespaceMapper.RDFS + "label"))), new Property(this._factory.CreateUriNode(new Uri(NamespaceMapper.RDFS + "comment"))));
this.RunTest(path, new String[] { "BGP", "Union" });
}