public override TraversalBranch Next(PathExpander expander, TraversalContext context)
{
if (_relationships == null)
{
ExpandRelationships(expander);
}
while (_relationships.MoveNext())
{
Relationship relationship = _relationships.Current;
if (relationship.Equals(_howIGotHere))
{
context.UnnecessaryRelationshipTraversed();
continue;
}
_expandedCount++;
Node node = relationship.GetOtherNode(_source);
// TODO maybe an unnecessary instantiation. Instead pass in this+node+relationship to uniqueness check
TraversalBranch next = NewNextBranch(node, relationship);
if (context.IsUnique(next))
{
context.RelationshipTraversed();
next.Initialize(expander, context);
return(next);
}
else
{
context.UnnecessaryRelationshipTraversed();
}
}
ResetRelationships();
return(null);
}
