Re: Re: About the STL Container and TTree

Hi Brett

   I have fixed the changes from roottalk.    But when I execute the generated TTreeVec.exe. It still breaks.    When compiling, the information is:
   #CMT---> (TTreeVecGen.make) Rebuilding ../i686-slc4-gcc34-dbg/TTreeVecGen_dependencies.make

             ../i686-slc4-gcc34-dbg/dict/TTreeVec/headers_dict.cpp headers.h
       --->> genreflex: INFO: Parsing file /afs/ihep.ac.cn/users/y/yczhang/concreteproj/TTreeVec/dict/headers.h with GCC_XML OK
       --->> genreflex: INFO: Generating Reflex Dictionary
       class std::deque<double>
       class std::vector<std::deque<double> >

   But when executing ,the information is:    Error in <TTree::Branch>: The class requested (vector<deque<double> >) for the branch "DequeVecBranch" refer to an stl collection and do not have a compiled CollectionProxy. Please generate the dictionary for this class (vector<deque<double> >)    .....
   Error in <TTree::SetBranchAddress>: unknown branch -> DequeVecBranch    

   In the prcocess, the load.C in share/ has not been used. So I guess that I should load the libTTreeVecDict.so before executing the TTreeVec.exe?    I will follow your recommendation "Level I", hoping that I can have a better understanding of the Reflex.

Cheers
YiChun.Zhang

> -----原始邮件-----
> 发件人: "Brett Viren" <bv_at_bnl.gov>
> 发送时间: 2010年1月14日 星期四
> 收件人: yczhang_at_ihep.ac.cn
> 抄送:
> 主题: Re: About the STL Container and TTree
>
> Hi again,
>
> yczhang_at_ihep.ac.cn writes:
>
> > I've committed it to $DYBSVN/people/yczhang//concreteproj/.
>
> Okay, with the help from roottalk I have your package built and your
> test app working. Please understand these changes:
>
> 1) Needed the fix given to us on the roottalk mailing list.
>
> 2) Needed to uncomment the code in deqvectree to turn on Cintex and load
> the Dict library.
>
> I have attached a patch file that you can apply to your package and will
> give you these two fixes. You can apply it by:
>
> cd people/yczhang
> patch -p2 < yichun.path
>
> I recommend that you totally remove the old TTreeVec/$CMTCONFIG/
> directory before trying to rebuild.
>
>
> I also have some general suggestions for improving the design of this
> code. They come in two "levels". The first may be simpler but is not
> as powerful as the second.
>
> Level I:
>
> a) do not write your own main() function.
>
> b) build most of deqvectree.cc into a library (but do not include the
> Cintex and Load() lines).
>
> c) use plain "root" command, load your library and Dict library via a
> load.C holding the Cintex and gSystem->Load() commands and write a very
> short .C macro to "drive" execution.
>
>
> Level II:
>
> a) write a GaudiAlgorithm to hold most of deqvectree.
>
> b) use the StatisticsSvc to manage the TTree
>
> c) write Python configuration and use nuwa.py to "drive" execution.
>
>
> As always, feel free to ask questions on any of this.
>
> -Brett.
>
Received on Thu Jan 14 2010 - 06:09:59 CET