/// <summary>
/// Determines the correct oepration.
/// If the value token after a distinct operator, is null the correct
/// operation is IsNotNull
/// </summary>
/// <param name="field">The field.</param>
/// <returns>The operation</returns>
private Operation IsNotNullOrNotEqualRule(FieldNode field)
{
ValueNode valueNode = ValueRule();
// TODO: Introduce a class for Null Values
if (valueNode == null)
{
return(_astFactory.CreateComparationIsNotNull(field));
}
return(_astFactory.CreateComparationNotEqual(field, valueNode));
}
public void CreateOperationIsNotNul()
{
Operation operation = factory.CreateComparationIsNotNull(
factory.CreateFieldNode("Field"));
Assert.IsNotNull(operation);
Assert.AreEqual(typeof(OpIsNotNull), operation.GetType());
}