public override void Visit(UnnestOp op, Node n)
{
Dictionary <string, object> attrs = new Dictionary <string, object>();
if (null != op.Var)
{
attrs.Add("Var", op.Var.Id);
}
using (new AutoXml(this, op, attrs)) {
DumpTable(op.Table);
VisitChildren(n);
}
}
/// <summary>
/// Clone an UnnestOp
/// </summary>
/// <param name="op">The Op to Copy</param>
/// <param name="n">The Node that references the Op</param>
/// <returns>A copy of the original Node that references a copy of the original Op</returns>
public override Node Visit(UnnestOp op, Node n)
{
// Visit the Node's children and map their Vars
List <Node> children = ProcessChildren(n);
// Get the mapped unnest-var
Var mappedVar = GetMappedVar(op.Var);
// Create a new unnestOp
Table newTable = m_destCmd.CreateTableInstance(op.Table.TableMetadata);
UnnestOp newUnnest = m_destCmd.CreateUnnestOp(mappedVar, newTable);
// Map the corresponding tables/columns
MapTable(newUnnest.Table, op.Table);
// create the unnest node
return(m_destCmd.CreateNode(newUnnest, children));
}
public override void Visit(UnnestOp op, Node n)
{
VisitRelOpDefault(op, n);
AssertOpType(n.Child0.Op, OpType.VarDef);
}
