[Quickfix-developers] Re: QuickFIX NullStore

[Brendan B. <bbo...@rg...>]

Oren,

Here is NullStore.tar.bz2 containing:

     ./src/.NET/NullMessageStore.cpp
     ./src/.NET/NullMessageStore.h
     ./src/C++/NullStore.cpp
     ./src/C++/NullStore.h
     ./src/java/quickfix_NullStore.cpp
     ./src/java/quickfix_NullStore.h
     ./src/java/quickfix_NullStoreFactory.cpp
     ./src/java/quickfix_NullStoreFactory.h
     ./src/java/src/quickfix/NullStore.java
     ./src/java/src/quickfix/NullStoreFactory.java


Regards,
Brendan

On Jun 1, 2006, at 2:41 PM, or...@qu... wrote:

 > Thank you for the contribution.  You can post it to the
 > quickfix-developers mailing list.

On Thu, June 01, 2006 1:18 pm Brendan wrote:

 > Thanks for the reply and direction.  Based on your feedback I created
 > a NullStore C++ class and Java & C# wrappers (haven't tested the C#
 > wrapper).
 >
 > I apologize for the delay in reply - I thought I'd have this done
 > 'real quick' and be able to provide my implementation along with it
 > (for inclusion in QuickFIX).
 >
 > My company is ok with my making this source available - how
 > can I contribute it? (It consists of 10 files).

 > On Apr 11, 2006, @ 17:50 oren replied:
 > >
 > > Yeah, I've implemented this sort of thing for market data projects
 > > (not sure where it is at the moment unfortunately).  It would  
probably
 > > be useful to distribute such a thing with quickfix.
 > >
 > > If you don't care about overhead (either memory or disk writes),  
then
 > > you can use either of those stores if you use the ResetOnDisconnect
 > > and ResetOnLogout settings.  These will make sure your sequence
 > > numbers get reset to 1 no matter what store you use.  If you are
 > > worried about the overhead, then what should work would be to
 > > implement some sort of NullStore which implements the sequence/
 > > creation time methods like the memory store.  Then just make the  
set
 > > () method do nothing, and have the get() method always return an  
empty
 > > vector.  Then using those two configuration settings you should get
 > > the effect you are looking for.
 >
 > > On Apr 11, 2006, at 7:23 PM, Brendan Boerner wrote:
 > >
 > > > In our application using QuickFIX I'm creating a FIX 4.2  
server which
 > > > will send MarketDataSnapshotFullRefresh messages to a client.
 > > >
 > > > In this application we don't wish to store messages if the  
client is
 > > > disconnected - the client will simply receive current
 > > > MarketDataSnapshotFullRefresh messages as become available  
after it
 > > > connects, restarting with MsgSeqNum=1.
 > > >
 > > > I didn't see anything in {File,Memory}MessageStore which would
 > > > implement this.  I wanted to check w/the list to see if I'll  
need to
 > > > implement my own implementation of MessageStoreFactory and
 > > > MessageStore or have I overlooked something?