JConvertDB.cc

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#include <iostream>
#include <iomanip>
 
#include "JDB/JDB.hh"
#include "JDB/JDBToolkit.hh"
#include "JDB/JSelector.hh"
#include "JDB/JSupport.hh"
#include "JDB/JDBincludes.hh"
#include "JDB/JDatabaseObjectIterator.hh"
 
#include "JSupport/JFileRecorder.hh"
#include "JSupport/JMeta.hh"
 
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"
 
namespace {
 
  using JDATABASE::JSelector;
  using JLANG::JType;
  using JSUPPORT::JMeta;
  
  /**
   * File writer interace.
   */
  struct io_interface {
    virtual ~io_interface() {}
    virtual void copy(const std::string& query, const JSelector& selection, const JMeta& meta, const std::string& output_file) const = 0;
  };
  
  /**
   * Multi-copy.
   */
  struct IO :
    std::map<std::string, std::shared_ptr<io_interface> > 
  {
    /**
     * File writer implementation.
     */
    template<class T>
    struct io : 
      public io_interface
    {
      virtual void copy(const std::string& query, const JSelector& selection, const JMeta& meta, const std::string& output_file) const
      {
        using namespace JPP;
 
        JDatabaseObjectIterator<T> in(query, selection);
        JFileRecorder<typename JTYPELIST<T, JMeta>::typelist> out(output_file.c_str());
 
        out.open();
 
        out.put(meta);
 
        in >> out;
 
        out.close();      
      }
    };
  
    /**
     * Constructor.
     *
     * \param  type            data type
     */
    template<class T>
    IO(const JType<T>& type)
    {
      using namespace JPP;
 
      for_each(*this, type);
    }
 
    /**
     * Add data type.
     *
     * \param  type            data type
     */
    template<class T>
    void operator()(const JType<T>& type)
    {
      (*this)[T::getName()] = std::make_shared< io<T> >();
    }
  };
}
 
 
/**
 * \file
 *
 * Auxiliary program to convert data from data base into ROOT format.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;
 
  typedef JDBTypes_t typelist;
 
  string    outputFile;
  JServer   server;
  string    usr;
  string    pwd;
  string    cookie;
  string    query;
  JSelector selection;
  int       debug;
 
  try {
 
    JParser<> zap("Auxiliary program to convert data from data base into ROOT format.");
    
    zap['o'] = make_field(outputFile);
    zap['s'] = make_field(server)     = getServernames();
    zap['u'] = make_field(usr)        = "";
    zap['!'] = make_field(pwd)        = "";
    zap['C'] = make_field(cookie)     = "";
    zap['q'] = make_field(query)      = getQueries<typelist>();
    zap['@'] = make_field(selection)  = JPARSER::initialised();
    zap['d'] = make_field(debug)      = 1;
 
    zap['q'] = JPARSER::not_initialised();
 
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }
 
 
  try {
 
    JDB::reset(usr, pwd, cookie);
 
    JDBToolkit::initialise(getDetector);
 
    IO io(getType<typelist>());
 
    io[query]->copy(query, selection, JMeta(argc,argv), outputFile);
  }
  catch(const exception& error) {
    FATAL(error.what() << endl);
  }
}