/// <summary>
/// Copies a DistinctOp
/// </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(DistinctOp op, Node n)
{
// Visit the Node's children and map their Vars
List <Node> children = ProcessChildren(n);
// Copy the DistinctOp's Keys
VarVec newDistinctKeys = Copy(op.Keys);
// Create a new DistinctOp that uses the copied keys
DistinctOp newDistinctOp = m_destCmd.CreateDistinctOp(newDistinctKeys);
// Return a new Node that references the copied DistinctOp and has the copied child Nodes as its children
return(m_destCmd.CreateNode(newDistinctOp, children));
}
public override void Visit(DistinctOp op, Node n)
{
Dictionary <string, object> attrs = new Dictionary <string, object>();
StringBuilder sb = new StringBuilder();
string separator = string.Empty;
foreach (Var v in op.Keys)
{
sb.Append(separator);
sb.Append(v.Id);
separator = ",";
}
if (0 != sb.Length)
{
attrs.Add("Keys", sb.ToString());
}
using (new AutoXml(this, op, attrs)) {
VisitChildren(n);
}
}
public override void Visit(DistinctOp op, Node n)
{
VisitRelOpDefault(op, n);
AssertRelOp(n.Child0.Op);
}