public async Task <T> Query <T>(ISingleQueryHandler <T> handler, CancellationToken cancellation)
{
using var conn = _database.CreateConnection();
var command = handler.BuildCommand();
command.Connection = conn;
await conn.OpenAsync(cancellation).ConfigureAwait(false);
using var reader = await command.ExecuteReaderAsync(cancellation).ConfigureAwait(false);
try
{
return(await handler.HandleAsync(reader, cancellation).ConfigureAwait(false));
}
finally
{
#if NET6_0_OR_GREATER
await reader.CloseAsync().ConfigureAwait(false);
#else
#pragma warning disable VSTHRD103
reader.Close();
#pragma warning restore VSTHRD103
#endif
await conn.CloseAsync().ConfigureAwait(false);
}
}
public async Task <T> Query <T>(ISingleQueryHandler <T> handler, CancellationToken cancellation)
{
using var conn = _tenant.CreateConnection();
var command = handler.BuildCommand();
command.Connection = conn;
await conn.OpenAsync(cancellation);
using var reader = await command.ExecuteReaderAsync(cancellation);
return(await handler.HandleAsync(reader, cancellation));
}
public async Task <T> Query <T>(ISingleQueryHandler <T> handler, CancellationToken cancellation)
{
try
{
var command = handler.BuildCommand();
command.Connection = _connection;
using var reader = await command.ExecuteReaderAsync(cancellation).ConfigureAwait(false);
return(await handler.HandleAsync(reader, cancellation).ConfigureAwait(false));
}
catch (Exception)
{
// Let the caller deal with retries
await reopenConnectionIfNecessary(cancellation).ConfigureAwait(false);
throw;
}
}