public override void DetermineCharacteristics(Plan plan)
{
if (Modifiers != null)
{
IsLiteral = Convert.ToBoolean(LanguageModifiers.GetModifier(Modifiers, "IsLiteral", Operator.IsLiteral.ToString()));
IsFunctional = Convert.ToBoolean(LanguageModifiers.GetModifier(Modifiers, "IsFunctional", Operator.IsFunctional.ToString()));
IsDeterministic = Convert.ToBoolean(LanguageModifiers.GetModifier(Modifiers, "IsDeterministic", Operator.IsDeterministic.ToString()));
IsRepeatable = Convert.ToBoolean(LanguageModifiers.GetModifier(Modifiers, "IsRepeatable", Operator.IsRepeatable.ToString()));
IsNilable = Convert.ToBoolean(LanguageModifiers.GetModifier(Modifiers, "IsNilable", Operator.IsNilable.ToString()));
}
else
{
IsLiteral = Operator.IsLiteral;
IsFunctional = Operator.IsFunctional;
IsDeterministic = Operator.IsDeterministic;
IsRepeatable = Operator.IsRepeatable;
IsNilable = Operator.IsNilable;
}
// Characteristics of an aggregate operator, unless overridden, are always based on the source node, rather than the
// actual operands to the operator.
IsLiteral = IsLiteral && Nodes[0].IsLiteral;
IsFunctional = IsFunctional && Nodes[0].IsFunctional;
IsDeterministic = IsDeterministic && Nodes[0].IsDeterministic;
IsRepeatable = IsRepeatable && Nodes[0].IsRepeatable;
IsNilable = IsNilable || Nodes[0].IsNilable;
}
// DetermineModifiers
protected virtual void DetermineModifiers(Plan plan)
{
if (Modifiers != null)
{
IgnoreUnsupported = Boolean.Parse(LanguageModifiers.GetModifier(Modifiers, "IgnoreUnsupported", IgnoreUnsupported.ToString()));
ShouldSupport = Boolean.Parse(LanguageModifiers.GetModifier(Modifiers, "ShouldSupport", ShouldSupport.ToString()));
}
}
protected override void DetermineModifiers(Plan plan)
{
base.DetermineModifiers(plan);
if (Modifiers != null)
{
EnforcePredicate = Boolean.Parse(LanguageModifiers.GetModifier(Modifiers, "EnforcePredicate", EnforcePredicate.ToString()));
}
}
public override void DetermineCharacteristics(Plan plan)
{
if (Modifiers != null)
{
IsLiteral = Convert.ToBoolean(LanguageModifiers.GetModifier(Modifiers, "IsLiteral", Operator.IsLiteral.ToString()));
IsFunctional = Convert.ToBoolean(LanguageModifiers.GetModifier(Modifiers, "IsFunctional", Operator.IsFunctional.ToString()));
IsDeterministic = Convert.ToBoolean(LanguageModifiers.GetModifier(Modifiers, "IsDeterministic", Operator.IsDeterministic.ToString()));
IsRepeatable = Convert.ToBoolean(LanguageModifiers.GetModifier(Modifiers, "IsRepeatable", Operator.IsRepeatable.ToString()));
IsNilable = Convert.ToBoolean(LanguageModifiers.GetModifier(Modifiers, "IsNilable", Operator.IsNilable.ToString()));
}
else
{
IsLiteral = Operator.IsLiteral;
IsFunctional = Operator.IsFunctional;
IsDeterministic = Operator.IsDeterministic;
IsRepeatable = Operator.IsRepeatable;
IsNilable = Operator.IsNilable;
}
for (int index = 0; index < Operator.Operands.Count; index++)
{
IsLiteral = IsLiteral && Nodes[index].IsLiteral;
IsFunctional = IsFunctional && Nodes[index].IsFunctional;
IsDeterministic = IsDeterministic && Nodes[index].IsDeterministic;
IsRepeatable = IsRepeatable && Nodes[index].IsRepeatable;
IsNilable = IsNilable || Nodes[index].IsNilable;
}
IsUniquePreserving = Convert.ToBoolean(MetaData.GetTag(Operator.MetaData, "DAE.IsUniquePreserving", IsUniquePreserving.ToString()));
IsOrderPreserving = Convert.ToBoolean(MetaData.GetTag(Operator.MetaData, "DAE.IsOrderPreserving", IsOrderPreserving.ToString()));
// Order preserving is strictly stronger than unique preserving, so set it explicitly here
if (IsOrderPreserving)
{
IsUniquePreserving = true;
}
}
