public async Task <object> GenerateAsync(ISessionImplementor session, object obj, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var sql = new SqlString(session.Factory.Dialect.SelectGUIDString);
try
{
var st = await(session.Batcher.PrepareCommandAsync(CommandType.Text, sql, SqlTypeFactory.NoTypes, cancellationToken)).ConfigureAwait(false);
DbDataReader reader = null;
try
{
reader = await(session.Batcher.ExecuteReaderAsync(st, cancellationToken)).ConfigureAwait(false);
object result;
try
{
await(reader.ReadAsync(cancellationToken)).ConfigureAwait(false);
result = await(IdentifierGeneratorFactory.GetAsync(reader, identifierType, session, cancellationToken)).ConfigureAwait(false);
}
finally
{
reader.Close();
}
log.Debug("GUID identifier generated: " + result);
return(result);
}
finally
{
session.Batcher.CloseCommand(st, reader);
}
}
catch (Exception sqle)
{
throw ADOExceptionHelper.Convert(session.Factory.SQLExceptionConverter, sqle, "could not retrieve GUID", sql);
}
}
/// <summary>
/// Generate an <see cref="Int16"/>, <see cref="Int32"/>, or <see cref="Int64"/>
/// for the identifier by using a database sequence.
/// </summary>
/// <param name="session">The <see cref="ISessionImplementor"/> this id is being generated in.</param>
/// <param name="obj">The entity for which the id is being generated.</param>
/// <param name="cancellationToken">A cancellation token that can be used to cancel the work</param>
/// <returns>The new identifier as a <see cref="Int16"/>, <see cref="Int32"/>, or <see cref="Int64"/>.</returns>
public virtual async Task <object> GenerateAsync(ISessionImplementor session, object obj, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
try
{
var cmd = await(session.Batcher.PrepareCommandAsync(CommandType.Text, sql, SqlTypeFactory.NoTypes, cancellationToken)).ConfigureAwait(false);
DbDataReader reader = null;
try
{
reader = await(session.Batcher.ExecuteReaderAsync(cmd, cancellationToken)).ConfigureAwait(false);
try
{
await(reader.ReadAsync(cancellationToken)).ConfigureAwait(false);
object result = await(IdentifierGeneratorFactory.GetAsync(reader, identifierType, session, cancellationToken)).ConfigureAwait(false);
if (log.IsDebugEnabled)
{
log.Debug("Sequence identifier generated: " + result);
}
return(result);
}
finally
{
reader.Close();
}
}
finally
{
session.Batcher.CloseCommand(cmd, reader);
}
}
catch (DbException sqle)
{
log.Error("error generating sequence", sqle);
throw ADOExceptionHelper.Convert(session.Factory.SQLExceptionConverter, sqle, "could not get next sequence value");
}
}
