Re: [Quickfix-users] Access to DataDictionary

[Marc R. <mro...@gm...>]

Oren -

Thanks for the response.

Would it be possible to get the changes to DataDictionary.h & .cpp for the
const modifier added so I don't have to make changes to future versions of
quickfix locally?

Thanks again,
Marc

On Tue, Mar 23, 2010 at 12:37 PM, <or...@qu...> wrote:

> The problem with that is it would presume a single data dictionary
> provider per application, which might not always be the case.
>
> --oren
>
> > -------- Original Message --------
> > Subject: [Quickfix-users] Access to DataDictionary
> > From: Marc Rossi <mro...@gm...>
> > Date: Sat, March 20, 2010 4:13 pm
> > To: qui...@li...
> >
> >
> > QuickFIX Documentation:
> http://www.quickfixengine.org/quickfix/doc/html/index.html
> > QuickFIX Support: http://www.quickfixengine.org/services.html<hr>Trying
> to get easy access to the DataDictionary from within a method that
> > only has a FIX::Message reference to work with.  My current solution is
> as
> > follows:
> >
> >         std::string hdrStr;
> >         m_message.getHeader().calculateString(hdrStr);
> >
> >         FIX::BeginString beginString;
> >         m_message.getHeader().getField(beginString);
> >
> >         FIX::Session *session = FIX::Session::lookupSession(hdrStr,
> true);
> >         const FIX::DataDictionaryProvider& ddp =
> > session->getDataDictionaryProvider();
> >         const FIX::DataDictionary& dd =
> > ddp.getSessionDataDictionary(beginString);
> >
> > The only issue this presents is that the
> > DataDictionaryProvider::getSessionDataDictionary() method is not const
> > friendly
> > (neither is the getApplicationDataDictionary() method).  I have provided
> > patches for both DataDictionaryProvider.h & .cpp
> > to make those methods const friendly.
> >
> > One question I have is if there is any reason the DataDictionaryProvider
> > class can't provide static methods to return
> > DataDictionary references?  So instead of jumping through the hoops above
> I
> > could simply do a:
> >
> >         const FIX::DataDictionary& dd =
> > FIX::DataDictionaryProvider::getDataDictionary(beginString);
> >
> > Any thoughts?
> >
> > TIA,
> > Marc
> >
> >
> > --- /tmpi/quickfix/src/C++/DataDictionaryProvider.h 2010-03-07
> > 20:26:26.000000000 -0600
> > +++ DataDictionaryProvider.h 2010-03-19 13:53:12.000000000 -0500
> > @@ -44,10 +44,10 @@
> >    DataDictionaryProvider() {}
> >    DataDictionaryProvider( const DataDictionaryProvider& copy );
> >
> > -  const DataDictionary& getSessionDataDictionary(const BeginString&
> > beginString)
> > +  const DataDictionary& getSessionDataDictionary(const BeginString&
> > beginString) const
> >    throw( DataDictionaryNotFound );
> >
> > -  const DataDictionary& getApplicationDataDictionary(const ApplVerID&
> > applVerID)
> > +  const DataDictionary& getApplicationDataDictionary(const ApplVerID&
> > applVerID) const
> >    throw( DataDictionaryNotFound );
> >
> >    void addTransportDataDictionary(const BeginString& beginString, const
> > DataDictionary& dd);
> >
> >
> > --- /home/mrossi/quickfix/src/C++/DataDictionaryProvider.cpp 2010-03-07
> > 20:26:26.000000000 -0600
> > +++ DataDictionaryProvider.cpp 2010-03-19 13:54:44.000000000 -0500
> > @@ -36,9 +36,9 @@
> >  }
> >
> >  const DataDictionary& DataDictionaryProvider::getSessionDataDictionary
> > -(const BeginString& beginString) throw( DataDictionaryNotFound )
> > +(const BeginString& beginString) const throw( DataDictionaryNotFound )
> >  {
> > -  std::map<std::string, DataDictionary>::iterator find =
> > +  std::map<std::string, DataDictionary>::const_iterator find =
> >      m_transportDictionaries.find(beginString);
> >    if( find != m_transportDictionaries.end() )
> >      return find->second;
> > @@ -47,9 +47,9 @@
> >  }
> >
> >  const DataDictionary&
> DataDictionaryProvider::getApplicationDataDictionary
> > -(const ApplVerID& applVerID) throw( DataDictionaryNotFound )
> > +(const ApplVerID& applVerID) const throw( DataDictionaryNotFound )
> >  {
> > -  std::map<std::string, DataDictionary>::iterator find =
> > +  std::map<std::string, DataDictionary>::const_iterator find =
> >      m_applicationDictionaries.find(applVerID);
> >    if( find != m_applicationDictionaries.end() )
> >      return
> find->second;<hr>------------------------------------------------------------------------------
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