internal void InitFrom(KeyVec left, KeyVec right)
{
if (left.m_noKeys ||
right.m_noKeys)
{
m_noKeys = true;
}
else
{
m_noKeys = false;
m_keys.InitFrom(left.m_keys);
m_keys.Or(right.m_keys);
}
}
protected override NodeInfo VisitSetOp(SetOp op, Node n)
{
ExtendedNodeInfo extendedNodeInfo1 = this.InitExtendedNodeInfo(n);
extendedNodeInfo1.Definitions.InitFrom(op.Outputs);
extendedNodeInfo1.LocalDefinitions.InitFrom(op.Outputs);
ExtendedNodeInfo extendedNodeInfo2 = this.GetExtendedNodeInfo(n.Child0);
ExtendedNodeInfo extendedNodeInfo3 = this.GetExtendedNodeInfo(n.Child1);
RowCount rowCount = RowCount.Zero;
extendedNodeInfo1.ExternalReferences.Or(extendedNodeInfo2.ExternalReferences);
extendedNodeInfo1.ExternalReferences.Or(extendedNodeInfo3.ExternalReferences);
if (op.OpType == OpType.UnionAll)
{
rowCount = extendedNodeInfo2.MinRows > extendedNodeInfo3.MinRows ? extendedNodeInfo2.MinRows : extendedNodeInfo3.MinRows;
}
if (op.OpType == OpType.Intersect || op.OpType == OpType.Except)
{
extendedNodeInfo1.Keys.InitFrom((IEnumerable <Var>)op.Outputs);
}
else
{
UnionAllOp unionAllOp = (UnionAllOp)op;
if (unionAllOp.BranchDiscriminator == null)
{
extendedNodeInfo1.Keys.NoKeys = true;
}
else
{
VarVec varVec = this.m_command.CreateVarVec();
for (int index = 0; index < n.Children.Count; ++index)
{
ExtendedNodeInfo extendedNodeInfo4 = n.Children[index].GetExtendedNodeInfo(this.m_command);
if (!extendedNodeInfo4.Keys.NoKeys && !extendedNodeInfo4.Keys.KeyVars.IsEmpty)
{
VarVec other = extendedNodeInfo4.Keys.KeyVars.Remap((Dictionary <Var, Var>)unionAllOp.VarMap[index].GetReverseMap());
varVec.Or(other);
}
else
{
varVec.Clear();
break;
}
}
if (varVec.IsEmpty)
{
extendedNodeInfo1.Keys.NoKeys = true;
}
else
{
extendedNodeInfo1.Keys.InitFrom((IEnumerable <Var>)varVec);
}
}
}
VarVec other1 = extendedNodeInfo2.NonNullableDefinitions.Remap((Dictionary <Var, Var>)op.VarMap[0].GetReverseMap());
extendedNodeInfo1.NonNullableDefinitions.InitFrom(other1);
if (op.OpType != OpType.Except)
{
VarVec other2 = extendedNodeInfo3.NonNullableDefinitions.Remap((Dictionary <Var, Var>)op.VarMap[1].GetReverseMap());
if (op.OpType == OpType.Intersect)
{
extendedNodeInfo1.NonNullableDefinitions.Or(other2);
}
else
{
extendedNodeInfo1.NonNullableDefinitions.And(other2);
}
}
extendedNodeInfo1.NonNullableDefinitions.And(op.Outputs);
extendedNodeInfo1.MinRows = rowCount;
return((NodeInfo)extendedNodeInfo1);
}