/// <summary>
/// Either read all items or use a using block to ensure all
/// resources are fully cleaned up.
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
public static async Task <IManagedEnumerable <T> > AsEnumerableAsync <T>(
this IDbCmd source) where T : new()
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
source.CommandBehavior(CmdBehavior.SingleResult);
var cmd = await source.CreateAndOpenAsync().ConfigureAwait(false);
var reader = await cmd.ExecuteReaderAsync(source).ConfigureAwait(false);
return(new ManagedEnumerable <T>(source, cmd, reader));
}
public static async Task <int> ExecuteNonQueryAsync(
this IDbCmd source)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
using (var cmd = await source.CreateAndOpenAsync().ConfigureAwait(false))
{
return(source.CancellationToken.HasValue
? await cmd.ExecuteNonQueryAsync(source.CancellationToken.Value).ConfigureAwait(false)
: await cmd.ExecuteNonQueryAsync().ConfigureAwait(false));
}
}
public static async Task <object> ExecuteScalarAsync(
this IDbCmd source)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
using (var cmd = await source.CreateAndOpenAsync().ConfigureAwait(false))
{
var obj = source.CancellationToken.HasValue
? await cmd.ExecuteScalarAsync(source.CancellationToken.Value).ConfigureAwait(false)
: await cmd.ExecuteScalarAsync().ConfigureAwait(false);
return(DBNull.Value.Equals(obj) ? null : obj);
}
}
public static async Task <T> ExecuteAsync <T>(
this IDbCmd source,
Func <DbCommand, T> func)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (func == null)
{
throw new ArgumentNullException(nameof(func));
}
using (var dbCmd = await source.CreateAndOpenAsync().ConfigureAwait(false))
{
return(await source.CreateTask(func, dbCmd).ConfigureAwait(false));
}
}
public static async void ExecuteAsync(
this IDbCmd source,
Action <DbCommand> action)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (action == null)
{
throw new ArgumentNullException(nameof(action));
}
using (var dbCmd = await source.CreateAndOpenAsync().ConfigureAwait(false))
{
action(dbCmd);
}
}
