// <summary>
// Default RelOp processing:
// We really don't want to allow any NestOps through; just fail if we don't have
// something coded.
// </summary>
protected override Node VisitRelOpDefault(RelOp op, Node n)
{
return NestingNotSupported(op, n);
}
protected virtual void VisitRelOpDefault(RelOp op, Node n)
{
VisitDefault(n);
}
protected override NodeInfo VisitRelOpDefault(RelOp op, Node n)
{
return(Unimplemented(n));
}
protected override Node VisitRelOpDefault(RelOp op, Node n)
{
VisitChildren(n); // visit all my children first
// Then identify all the subqueries that have shown up as part of my node
// Create Apply Nodes for each of these.
List<Node> nestedSubqueries;
if (m_nodeSubqueries.TryGetValue(n, out nestedSubqueries)
&& nestedSubqueries.Count > 0)
{
// Validate - this must only apply to the following nodes
PlanCompiler.Assert(
n.Op.OpType == OpType.Project || n.Op.OpType == OpType.Filter ||
n.Op.OpType == OpType.GroupBy || n.Op.OpType == OpType.GroupByInto,
"VisitRelOpDefault: Unexpected op?" + n.Op.OpType);
var newInputNode = AugmentWithSubqueries(n.Child0, nestedSubqueries, true);
// Now make this the new input child
n.Child0 = newInputNode;
}
return n;
}
protected override void VisitRelOpDefault(RelOp op, Node n)
{
VisitDefault(n);
}
/// <summary>
/// Default visitor for RelOps. Simply visits the children, and
/// then tries to recompute the NodeInfo (with the fond hope that
/// some keys have now shown up)
/// </summary>
protected override void VisitRelOpDefault(RelOp op, Node n)
{
VisitChildren(n);
m_command.RecomputeNodeInfo(n);
}
protected virtual void VisitRelOpDefault(RelOp op, Node n)
{
this.VisitDefault(n);
}
protected override Node VisitRelOpDefault(RelOp op, Node n)
{
return null;
}
protected override void VisitRelOpDefault(RelOp op, Node n)
{
VisitDefault(n);
}
// <summary>
// A default processor for all RelOps.
// Allows new visitors to just override this to handle all RelOps
// </summary>
// <param name="op"> the RelOp </param>
// <param name="n"> the node to process </param>
// <returns> a potentially modified subtree </returns>
protected virtual TResultType VisitRelOpDefault(RelOp op, Node n)
{
return(VisitDefault(n));
}