private static IBaseSet updateSet <T>(string value, int i,
ref string newValue, ref char lastOperand,
IBaseSet set, IBase newValuePrimitive) where T : IBaseSet, new()
{
char currentCharacter = value[i];
if (newValuePrimitive != null)
{
if (set == null)
{
set = new T();
set = set.Factory(newValuePrimitive);
}
else
{
set.AppendItemToGroup(lastOperand, newValuePrimitive);
}
updateOperand(value, i, out lastOperand);
newValue = string.Empty;
}
else if (Query.IsSumDifference(value, i) || Query.IsProductQuotient(value, i))
{
lastOperand = currentCharacter;
}
else if (!char.IsWhiteSpace(currentCharacter))
{
newValue += currentCharacter;
}
return(set);
}
protected static T simplifyNumeric <T>(IBaseSet set) where T : IBaseSet, new()
{
if (!set.IsNumber())
{
return((T)set);
}
IBase newValuePrimitive = new PrimitiveUnit(set.Calculate());
set = new T();
set = set.Factory(newValuePrimitive);
return((T)set);
}
public VirtualSet(IBaseSet innerSet, string alias, IEnumerable <IColumn> columns)
{
Select = columns;
From = innerSet;
Alias = alias;
}
public VirtualSet(IBaseSet innerSet, string alias)
{
From = innerSet;
Alias = alias;
}
public Join(IBaseSet set, string alias, JoinType type)
{
Set = set;
Alias = alias;
Type = type;
}