public override TraversalBranch Next(TraversalContext metadata)
{
TraversalBranch result = null;
while (result == null)
{
if (_current == null)
{
_current = _superNodes.RemoveFirst();
if (_current == null)
{
return(null);
}
}
else if (_current.expanded() > 0 && _current.expanded() % _threshold == 0)
{
_superNodes.AddLast(_current);
_current = _current.parent();
continue;
}
TraversalBranch next = _current.next(_expander, metadata);
if (next == null)
{
_current = _current.parent();
continue;
}
_current = next;
result = _current;
}
return(result);
}
public override IEnumerator <PropertyContainer> Iterator()
{
// TODO Don't loop through them all up front
LinkedList <PropertyContainer> entities = new LinkedList <PropertyContainer>();
TraversalBranch branch = _start;
while (branch.Length() > 0)
{
entities.AddFirst(branch.EndNode());
entities.AddFirst(branch.LastRelationship());
branch = branch.Parent();
}
entities.AddFirst(branch.EndNode());
if (_cachedStartNode == null)
{
_cachedStartNode = branch.EndNode();
}
if (_end.length() > 0)
{
entities.AddLast(_end.lastRelationship());
branch = _end.parent();
while (branch.Length() > 0)
{
entities.AddLast(branch.EndNode());
entities.AddLast(branch.LastRelationship());
branch = branch.Parent();
}
entities.AddLast(branch.EndNode());
}
return(entities.GetEnumerator());
}
protected internal override Node fetchNextOrNull()
{
try
{
return(branch.length() >= 0 ? branch.endNode() : null);
}
finally
{
branch = branch.parent();
}
}
protected internal override Relationship fetchNextOrNull()
{
try
{
return(branch != null?branch.lastRelationship() : null);
}
finally
{
branch = branch != null?branch.parent() : null;
}
}
public override TraversalBranch Next(TraversalContext metadata)
{
TraversalBranch result = null;
while (result == null)
{
if (_current == null)
{
return(null);
}
TraversalBranch next = _current.next(_expander, metadata);
if (next == null)
{
_current = _current.parent();
continue;
}
_current = next;
result = _current;
}
return(result);
}
