public override void AddToPlanTree()
{
var columnNames = expression.DiscoverReferences();
var tablePlan = planner.JoinPlansForColumns(columnNames);
tablePlan.UpdatePlan(new ExhaustiveSelectNode(tablePlan.Plan, expression));
}
private void EvaluateSingles(List <SqlBinaryExpression> list, List <ExpressionPlan> plans)
{
// The list of simple expression plans (lhs = single)
var simplePlanList = new List <SingleColumnPlan>();
// The list of complex function expression plans (lhs = expression)
var complexPlanList = new List <SingleColumnPlan>();
foreach (var expression in list)
{
// The single var
ObjectName singleVar;
SqlExpressionType op = expression.ExpressionType;
SqlExpression left = expression.Left, right = expression.Right;
if (op.IsSubQuery())
{
singleVar = expression.Left.AsReferenceName();
if (singleVar != null)
{
plans.Add(new SimpleSelectPlan(this, singleVar, op, expression.Right));
}
else
{
singleVar = expression.Left.DiscoverReferences().First();
plans.Add(new ComplexSinglePlan(this, singleVar, expression));
}
}
else
{
singleVar = expression.Left.DiscoverReferences().FirstOrDefault();
if (singleVar == null)
{
// Reverse the expressions and the operator
var tempExp = left;
left = right;
right = tempExp;
op = op.Reverse();
singleVar = left.DiscoverReferences().First();
}
var tableSource = FindPlan(singleVar);
// Simple LHS?
var v = left.AsReferenceName();
if (v != null)
{
AddSingleColumnPlan(simplePlanList, tableSource, v, singleVar, new [] { left, right }, op);
}
else
{
// No, complex lhs
AddSingleColumnPlan(complexPlanList, tableSource, null, singleVar, new [] { left, right }, op);
}
}
}
plans.AddRange(simplePlanList.Select(plan => new SimpleSinglePlan(this, plan.UniqueName, plan.Expression)).Cast <ExpressionPlan>());
plans.AddRange(complexPlanList.Select(plan => new ComplexSinglePlan(this, plan.UniqueName, plan.Expression)).Cast <ExpressionPlan>());
}
