/// <summary>
/// Converts the Algebra to a Graph Pattern.
/// </summary>
/// <returns></returns>
public GraphPattern ToGraphPattern()
{
GraphPattern gp = _inner.ToGraphPattern();
if (gp.HasModifier)
{
GraphPattern p = new GraphPattern();
p.AddGraphPattern(gp);
p.AddAssignment(new BindPattern(_var, _expr));
return(p);
}
else
{
gp.AddAssignment(new BindPattern(_var, _expr));
return(gp);
}
}
private static void AddTriplePattern(GraphPattern graphPattern, ITriplePattern tp)
{
switch (tp.PatternType)
{
case TriplePatternType.Match:
case TriplePatternType.Path:
case TriplePatternType.PropertyFunction:
case TriplePatternType.SubQuery:
graphPattern.AddTriplePattern(tp);
break;
case TriplePatternType.LetAssignment:
case TriplePatternType.BindAssignment:
graphPattern.AddAssignment((IAssignmentPattern)tp);
break;
case TriplePatternType.Filter:
graphPattern.AddFilter(((IFilterPattern)tp).Filter);
break;
}
}
