public PropertyGraphModel Transform(PropertyGraphModel graph)
{
var result = graph;
if (WhereClause != null)
{
result = WhereClause.Transform(result);
}
if (CalculateClause != null)
{
result = CalculateClause.Transform(result);
}
if (SelectPropsClause != null)
{
result = SelectPropsClause.Transform(result);
}
if (GroupByClause != null)
{
result = GroupByClause.Transform(result);
}
if (LayoutClause != null)
{
result = LayoutClause.Transform(result);
}
result.ClearIfEmpty();
return(result);
}
private GroupByClause ParseGroupByClause(ParseTreeNode node)
{
if (node.ChildNodes.Count == 0)
{
return(null);
}
// the clause is now limited to a sinlge props
var result = new GroupByClause()
{
GroupingProp = node.ChildNodes[1].ChildNodes[0].FindToken().Value.ToString()
};
return(result);
}