/// <summary>
/// Creates a new GetDate() function to be executed on the database server
/// </summary>
/// <returns></returns>
public static DBFunction GetDate()
{
DBFunction func = new DBFunctionRef();
func.KnownFunction = Perceiveit.Data.Function.GetDate;
return(func);
}
/// <summary>
/// Creates a new LastID function to be executed on the database server
/// </summary>
/// <returns></returns>
public static DBFunction LastID()
{
DBFunction func = new DBFunctionRef();
func.KnownFunction = Perceiveit.Data.Function.LastID;
return(func);
}
/// <summary>
/// Creates a new IsNull function reference to be executed on the database server - ISNULL(match, otherwise)
/// </summary>
/// <param name="match"></param>
/// <param name="otherwise"></param>
/// <returns></returns>
public static DBFunction IsNull(DBClause match, DBClause otherwise)
{
DBFunctionRef fref = new DBFunctionRef();
fref.KnownFunction = Perceiveit.Data.Function.IsNull;
fref.Parameters.Add(match);
fref.Parameters.Add(otherwise);
return(fref);
}
/// <summary>
/// Creates a new DBFunction reference for the known function and appends the provided parameters
/// </summary>
/// <param name="func"></param>
/// <param name="parameters"></param>
/// <returns></returns>
public static DBFunction Function(Function func, params DBClause[] parameters)
{
DBFunction f = new DBFunctionRef();
f.KnownFunction = func;
if (null != parameters && parameters.Length > 0)
{
foreach (DBClause clause in parameters)
{
f.Parameters.Add(clause);
}
}
return(f);
}
/// <summary>
/// Creates a new empty DBFunction reference
/// </summary>
/// <returns></returns>
public static DBFunction Function()
{
DBFunction func = new DBFunctionRef();
return(func);
}
