public override void Visit(PhysicalProjectOp op, Node n)
{
VisitPhysicalOpDefault(op, n);
Assert(n.Children.Count >= 1, "PhysicalProjectOp needs at least 1 arg: found {0}", n.Children.Count);
foreach (Node chi in n.Children)
{
AssertRelOpOrPhysicalOp(chi.Op);
}
}
/// <summary>
/// Copies a PhysicalProjectOp
/// </summary>
/// <param name="op"></param>
/// <param name="n"></param>
/// <returns></returns>
public override Node Visit(PhysicalProjectOp op, Node n)
{
// Visit the Node's children and map their Vars
List <Node> children = ProcessChildren(n);
// Copy the ProjectOp's VarSet
VarList newVarList = Copy(op.Outputs);
SimpleCollectionColumnMap newColumnMap = Copy(op.ColumnMap) as SimpleCollectionColumnMap;
Debug.Assert(newColumnMap != null, "Coping of a physical project's columnMap did not return a SimpleCollectionColumnMap");
// Create a new ProjectOp based on the copied VarSet
PhysicalProjectOp newProject = m_destCmd.CreatePhysicalProjectOp(newVarList, newColumnMap);
// Return a new Node that references the copied ProjectOp and has the copied child Nodes as its children
return(m_destCmd.CreateNode(newProject, children));
}
public override void Visit(PhysicalProjectOp op, Node n)
{
using (new AutoXml(this, op)) {
using (new AutoXml(this, "outputs")) {
foreach (Var v in op.Outputs)
{
DumpVar(v);
}
}
using (new AutoXml(this, "columnMap")) {
op.ColumnMap.Accept(ColumnMapDumper.Instance, this);
}
using (new AutoXml(this, "input")) {
VisitChildren(n);
}
}
}
