/// <summary>
/// Gets the most recent snapshot for the specified <paramref name="streamId"/> and <paramref name="maximumVersion"/>.
/// </summary>
/// <param name="type">The snapshot type.</param>
/// <param name="streamId">The unique stream identifier.</param>
/// <param name="maximumVersion">The maximum snapshot version.</param>
public Snapshot GetSnapshot(Type type, Guid streamId, Int32 maximumVersion)
{
Verify.NotNull(type, nameof(type));
Verify.NotDisposed(this, disposed);
using (var command = dialect.CreateCommand(dialect.GetSnapshot))
{
Log.Trace("Getting stream {0} snapshot with version less than or equal to {1}", streamId, maximumVersion);
command.Parameters.Add(dialect.CreateStreamIdParameter(streamId));
command.Parameters.Add(dialect.CreateVersionParameter(maximumVersion));
return(dialect.QuerySingle(command, record => CreateSnapshot(type, record)));
}
}
/// <summary>
/// Creates a <see cref="DataTable"/> based on the required insert/update command parameters.
/// </summary>
private static DbBatchOperation CreateBuffer(IStoreSnapshotSettings settings, ISnapshotStoreDialect dialect)
{
using (var command = dialect.CreateCommand(settings.ReplaceExisting ? dialect.ReplaceSnapshot : dialect.InsertSnapshot))
{
command.Parameters.Add(dialect.CreateStreamIdParameter(default(Guid)));
command.Parameters.Add(dialect.CreateVersionParameter(default(Int32)));
command.Parameters.Add(dialect.CreateStateParameter(default(Byte[])));
return(new DbBatchOperation(dialect, command, settings.BatchSize, settings.FlushInterval));
}
}
/// <summary>
/// Creates a <see cref="DataTable"/> based on the required insert/update command parameters.
/// </summary>
private static DbBatchOperation CreateBuffer(IStoreSnapshotSettings settings, ISnapshotStoreDialect dialect)
{
using (var command = dialect.CreateCommand(settings.ReplaceExisting ? dialect.ReplaceSnapshot : dialect.InsertSnapshot))
{
command.Parameters.Add(dialect.CreateStreamIdParameter(default(Guid)));
command.Parameters.Add(dialect.CreateVersionParameter(default(Int32)));
command.Parameters.Add(dialect.CreateStateParameter(default(Byte[])));
return new DbBatchOperation(dialect, command, settings.BatchSize, settings.FlushInterval);
}
}