/// <summary>Engloba la expresión en una funcion de sql</summary>
public Expression Fun(dbFun funct, params string[] extraParams)
{
if (extraParams != null && extraParams.Length > 0)
{
foreach (string prm in extraParams)
{
if (funct == dbFun.Cast)
{
Operate(dbOpe.As, prm);
}
else
{
Operate(dbOpe.Comma, prm);
}
}
}
return(new Expression(funct, this));
}
private Expression(dbFun funct, Expression expr)
{
particles.Add(new Particle(funct, expr));
}
public Particle(dbFun funct, Expression expr)
{
Operation = dbOpe.Funct;
Funct = funct;
SetValue(expr);
}