/// <summary>
/// Returns the number of the rows returned by a semantic query.
/// </summary>
/// <typeparam name="T">The type of the subject node.</typeparam>
/// <param name="prev">Is a subject node.</param>
public static int CountGo <T>(this DbTable <T> prev)
where T : DbRow
{
prev.CheckNullAndThrow(Text.Free.Sentence, Text.Method.SelectCount);
var ca = Assembly.GetCallingAssembly();
var select = new SelectChainer((ISemantic)prev, new Column[] { Designer.Count().As(Text.Count) }, false);
var connectable = Reader.GetConnectable(ca, select);
return(Reader.LoadTable <Row <int> >(connectable, null).ToValue <int>());
}
/// <summary>
/// Retrieves the number of rows returned by the query.
/// </summary>
/// <param name="prev">A predecessor object.</param>
public static SelectChainer SelectCount(this ISemqToSql prev)
{
prev.CheckNullAndThrow(Text.Free.Sentence, Text.Method.SelectCount);
return(new SelectChainer((ISemantic)prev, new Column[] { Designer.Count().As(Text.Count) }, false));
}
/// <summary>
/// <para>Retrieves the number of rows returned by the query.</para>
/// </summary>
/// <param name="prev">A predecessor object.</param>
public static SelectChainer SelectCount(this ISelect prev)
{
return(new SelectChainer((Chainer)prev, new Column[] { Designer.Count().As(Text.Count) }, false));
}