private EventStreamCursor(EventStreamHeader streamHeader, StreamVersion fromVersion, FetchEvents fetch)
{
Require.NotNull(fetch, "fetch");
m_state = new InitialCursorState(streamHeader, fromVersion, fetch);
m_slice = EventStreamSlice.Empty;
m_cursorStreamVersion = fromVersion;
}
public EventStreamCursor(EventStreamPosition position, StreamVersion fromVersion, FetchEvents fetch)
{
Require.NotNull(fetch, "fetch");
if (EventStreamPosition.IsNewStream(position))
{
m_state = new EndOfStreamCursorState();
m_slice = EventStreamSlice.Empty;
}
else
{
m_state = new InitialCursorState(position, fromVersion, fetch);
}
}
public async Task FetchSlice()
{
m_slice = await m_state.FetchSlice();
m_state = m_state.NextState;
}
public async Task FetchSlice()
{
m_slice = await m_state.FetchSlice();
m_state = m_state.NextState;
}
private EventStreamCursor()
{
m_state = new EndOfStreamCursorState(EventStreamHeader.Unknown);
m_slice = EventStreamSlice.Empty;
}
private EventStreamCursor(EventStreamHeader streamHeader, StreamVersion fromVersion)
{
m_state = new EndOfStreamCursorState(streamHeader);
m_slice = EventStreamSlice.Empty;
m_cursorStreamVersion = fromVersion;
}
public static bool IsEndOfStream(CursorState state)
{
Require.NotNull(state, "state");
return state is EndOfStreamCursorState;
}
public static bool IsFetching(CursorState state)
{
Require.NotNull(state, "state");
return state is FetchingCursorState;
}
public static bool IsInitialState(CursorState state)
{
Require.NotNull(state, "state");
return state is InitialCursorState;
}
public static bool IsFetching(CursorState state)
{
Require.NotNull(state, "state");
return(state is FetchingCursorState);
}
public static bool IsInitialState(CursorState state)
{
Require.NotNull(state, "state");
return(state is InitialCursorState);
}
public static bool IsEndOfStream(CursorState state)
{
Require.NotNull(state, "state");
return(state is EndOfStreamCursorState);
}