/data/refman/pasoursint/CMSSW_5_3_4/src/DQMServices/Core/src/DQMStore.cc

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#include "DQMServices/Core/interface/Standalone.h"
#include "DQMServices/Core/interface/DQMStore.h"
#include "DQMServices/Core/interface/QReport.h"
#include "DQMServices/Core/interface/QTest.h"
#include "DQMServices/Core/src/DQMError.h"
#include "classlib/utils/RegexpMatch.h"
#include "classlib/utils/Regexp.h"
#include "classlib/utils/StringOps.h"
#include "TFile.h"
#include "TROOT.h"
#include "TKey.h"
#include "TClass.h"
#include "TSystem.h"
#include <iterator>
#include <cerrno>
#include <boost/algorithm/string.hpp>



static std::string s_monitorDirName = "DQMData";
static std::string s_referenceDirName = "Reference";
static std::string s_collateDirName = "Collate";
static std::string s_safe = "/ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-+=_()# ";

static const lat::Regexp s_rxmeval ("^<(.*)>(i|f|s|e|t|qr)=(.*)</\\1>$");
static const lat::Regexp s_rxmeqr1 ("^st:(\\d+):([-+e.\\d]+):([^:]*):(.*)$");
static const lat::Regexp s_rxmeqr2 ("^st\\.(\\d+)\\.(.*)$");

static bool
isSubdirectory(const std::string &ofdir, const std::string &path)
{
  return (ofdir.empty()
          || (path.size() >= ofdir.size()
              && path.compare(0, ofdir.size(), ofdir) == 0
              && (path.size() == ofdir.size()
                  || path[ofdir.size()] == '/')));
}

static void
cleanTrailingSlashes(const std::string &path, std::string &clean, const std::string *&cleaned)
{
  clean.clear();
  cleaned = &path;

  size_t len = path.size();
  for ( ; len > 0 && path[len-1] == '/'; --len)
    ;

  if (len != path.size())
  {
    clean = path.substr(0, len);
    cleaned = &clean;
  }
}

static void
splitPath(std::string &dir, std::string &name, const std::string &path)
{
  size_t slash = path.rfind('/');
  if (slash != std::string::npos)
  {
    dir.append(path, 0, slash);
    name.append(path, slash+1, std::string::npos);
  }
  else
    name = path;
}

static void
mergePath(std::string &path, const std::string &dir, const std::string &name)
{
  path.reserve(dir.size() + name.size() + 2);
  path += dir;
  if (! path.empty())
    path += '/';
  path += name;
}

template <class T>
QCriterion *
makeQCriterion(const std::string &qtname)
{ return new T(qtname); }

template <class T>
void
initQCriterion(std::map<std::string, QCriterion *(*)(const std::string &)> &m)
{ m[T::getAlgoName()] = &makeQCriterion<T>; }


fastmatch::fastmatch (std::string const& _fastString) :
  fastString_ (_fastString),  matching_ (UseFull)
{
  try
  {
    regexp_ = NULL;
    regexp_ = new lat::Regexp(fastString_, 0, lat::Regexp::Wildcard);
    regexp_->study();
  }
  catch (lat::Error &e)
  {
    delete regexp_;
    raiseDQMError("DQMStore", "Invalid wildcard pattern '%s' in quality"
                  " test specification", fastString_.c_str());
  }

  // count stars ( "*" )
  size_t starCount = 0;
  int pos = -1;
  while (true)
  {
    pos = fastString_.find("*", pos + 1 );
    if ((size_t)pos == std::string::npos)
      break;
    starCount ++;
  }

  // investigate for heuristics
  if ((fastString_.find('"') != std::string::npos)  ||
      (fastString_.find(']') != std::string::npos)  ||
      (fastString_.find('?') != std::string::npos)  ||
      (fastString_.find('\\') != std::string::npos) ||
      (starCount > 2))
  {
    // no fast version can be used
    return;
  }

  // match for pattern "*MyString" and "MyString*"
  if (starCount == 1)
  {
    if (boost::algorithm::starts_with(fastString_, "*"))
    {
      matching_ = OneStarStart;
      fastString_.erase(0,1);
      return;
    }

    if (boost::algorithm::ends_with(fastString_, "*"))
    {
      matching_ = OneStarEnd;
      fastString_.erase(fastString_.length()-1,1);
      return;
    }
  }

  // match for pattern "*MyString*"
  if (starCount == 2)
  {
    if (boost::algorithm::starts_with(fastString_, "*") &&
        boost::algorithm::ends_with(fastString_, "*"))
    {
      matching_ = TwoStar;
      fastString_.erase(0,1);
      fastString_.erase(fastString_.size() - 1, 1);
      return;
    }
  }
}

fastmatch::~fastmatch()
{
  if (regexp_ != NULL)
    delete regexp_;
}

bool fastmatch::compare_strings_reverse(std::string const& pattern,
                                        std::string const& input) const
{
  if (input.size() < pattern.size())
    return false;

  // compare the two strings character by character for equalness:
  // this does not create uneeded copies of std::string. The
  // boost::algorithm implementation does
  std::string::const_reverse_iterator rit_pattern = pattern.rbegin();
  std::string::const_reverse_iterator rit_input = input.rbegin();

  for (; rit_pattern < pattern.rend(); rit_pattern++, rit_input++)
  {
    if (*rit_pattern != *rit_input)
      // found a difference, fail
      return false;
  }
  return true;
}

bool fastmatch::compare_strings(std::string const& pattern,
                                std::string const& input) const
{
  if (input.size() < pattern.size())
    return false;

  // compare the two strings character by character for equalness:
  // this does not create uneeded copies of std::string. The
  // boost::algorithm implementation does.
  std::string::const_iterator rit_pattern = pattern.begin();
  std::string::const_iterator rit_input = input.begin();

  for (; rit_pattern < pattern.end(); rit_pattern++, rit_input++)
  {
    if (*rit_pattern != *rit_input)
      // found a difference, fail
      return false;
  }
  return true;
}

bool fastmatch::match(std::string const& s) const
{
  switch (matching_)
  {
  case OneStarStart:
    return compare_strings_reverse(fastString_, s);

  case OneStarEnd:
    return compare_strings(fastString_, s);

  case TwoStar:
    return (s.find(fastString_) != std::string::npos);

  default:
    return regexp_->match(s);
  }
}

DQMStore::DQMStore(const edm::ParameterSet &pset, edm::ActivityRegistry& ar)
  : verbose_ (1),
    verboseQT_ (1),
    reset_ (false),
    collateHistograms_ (false),
    readSelectedDirectory_ (""),
    pwd_ ("")
{
  initializeFrom(pset);
  if(pset.getUntrackedParameter<bool>("forceResetOnBeginRun",false)) {
    ar.watchPostSourceRun(this,&DQMStore::forceReset);
  }
}

DQMStore::DQMStore(const edm::ParameterSet &pset)
  : verbose_ (1),
    verboseQT_ (1),
    reset_ (false),
    collateHistograms_ (false),
    readSelectedDirectory_ (""),
    pwd_ ("")
{
  initializeFrom(pset);
}

DQMStore::~DQMStore(void)
{
  for (QCMap::iterator i = qtests_.begin(), e = qtests_.end(); i != e; ++i)
    delete i->second;

  for (QTestSpecs::iterator i = qtestspecs_.begin(), e = qtestspecs_.end(); i != e; ++i)
    delete i->first;

}

void
DQMStore::initializeFrom(const edm::ParameterSet& pset) {
  makeDirectory("");
  reset();

  // set steerable parameters
  verbose_ = pset.getUntrackedParameter<int>("verbose", 0);
  if (verbose_ > 0)
    std::cout << "DQMStore: verbosity set to " << verbose_ << std::endl;
  
  verboseQT_ = pset.getUntrackedParameter<int>("verboseQT", 0);
  if (verbose_ > 0)
    std::cout << "DQMStore: QTest verbosity set to " << verboseQT_ << std::endl;
  
  collateHistograms_ = pset.getUntrackedParameter<bool>("collateHistograms", false);
  if (collateHistograms_)
    std::cout << "DQMStore: histogram collation is enabled\n";

  std::string ref = pset.getUntrackedParameter<std::string>("referenceFileName", "");
  if (! ref.empty())
  {
    std::cout << "DQMStore: using reference file '" << ref << "'\n";
    readFile(ref, true, "", s_referenceDirName, StripRunDirs, false);
  }  

  initQCriterion<Comp2RefChi2>(qalgos_);
  initQCriterion<Comp2RefKolmogorov>(qalgos_);
  initQCriterion<ContentsXRange>(qalgos_);
  initQCriterion<ContentsYRange>(qalgos_);
  initQCriterion<MeanWithinExpected>(qalgos_);
  initQCriterion<Comp2RefEqualH>(qalgos_);
  initQCriterion<DeadChannel>(qalgos_);
  initQCriterion<NoisyChannel>(qalgos_);
  initQCriterion<ContentsWithinExpected>(qalgos_);
  initQCriterion<CompareToMedian>(qalgos_);
  
}

void
DQMStore::setVerbose(unsigned /* level */) 
{ return; }

const std::string &
DQMStore::pwd(void) const
{ return pwd_; }

void
DQMStore::cd(void)
{ setCurrentFolder(""); }

void
DQMStore::cd(const std::string &subdir)
{
  std::string clean;
  const std::string *cleaned = 0;
  cleanTrailingSlashes(subdir, clean, cleaned);

  if (! dirExists(*cleaned))
    raiseDQMError("DQMStore", "Cannot 'cd' into non-existent directory '%s'",
                  cleaned->c_str());
  
  setCurrentFolder(*cleaned);
}

void
DQMStore::setCurrentFolder(const std::string &fullpath)
{
  std::string clean;
  const std::string *cleaned = 0;
  cleanTrailingSlashes(fullpath, clean, cleaned);
  makeDirectory(*cleaned);
  pwd_ = *cleaned;
}

void
DQMStore::goUp(void)
{
  size_t pos = pwd_.rfind('/');
  if (pos == std::string::npos)
    setCurrentFolder("");
  else
    setCurrentFolder(pwd_.substr(0, pos));
}

// -------------------------------------------------------------------
void
DQMStore::makeDirectory(const std::string &path)
{
  std::string prev;
  std::string subdir;
  std::string name;
  prev.reserve(path.size());
  subdir.reserve(path.size());
  name.reserve(path.size());
  size_t prevname = 0;
  size_t slash = 0;

  while (true)
  {
    // Create this subdirectory component.
    subdir.clear();
    subdir.append(path, 0, slash);
    name.clear();
    name.append(subdir, prevname, std::string::npos);
    if (! prev.empty() && findObject(prev, name))
      raiseDQMError("DQMStore", "Attempt to create subdirectory '%s'"
                    " which already exists as a monitor element",
                    subdir.c_str());

    if (! dirs_.count(subdir))
      dirs_.insert(subdir);

    // Stop if we've reached the end (including possibly a trailing slash).
    if (slash+1 >= path.size())
      break;

    // Find the next slash, making sure we progress.  If reach the end,
    // process the last path component; the next loop round will terminate.
    prevname = slash ? slash+1 : slash;
    prev = subdir;
    if ((slash = path.find('/', ++slash)) == std::string::npos)
      slash = path.size();
  }
}

bool
DQMStore::dirExists(const std::string &path) const
{ return dirs_.count(path) > 0; }

template <class HISTO, class COLLATE>
MonitorElement *
DQMStore::book(const std::string &dir, const std::string &name,
               const char *context, int kind,
               HISTO *h, COLLATE collate)
{
  assert(name.find('/') == std::string::npos);
  std::string path;
  mergePath(path, dir, name);

  // Put us in charge of h.
  h->SetDirectory(0);

  // Check if the request monitor element already exists.
  MonitorElement *me = findObject(dir, name);
  if (me)
  {
    if (collateHistograms_)
    {
      collate(me, h);
      delete h;
      return me;
    }
    else
    {    
      if (verbose_ > 1)
        std::cout << "DQMStore: "
                  << context << ": monitor element '"
                  << path << "' already exists, collating" << std::endl;
      me->Reset();
      collate(me, h);
      delete h;
      return me;
    }
  }
  else
  {
    // Create and initialise core object.
    assert(dirs_.count(dir));
    MonitorElement proto(&*dirs_.find(dir), name);
    me = const_cast<MonitorElement &>(*data_.insert(proto).first)
      .initialise((MonitorElement::Kind)kind, h);

    // Initialise quality test information.
    QTestSpecs::iterator qi = qtestspecs_.begin();
    QTestSpecs::iterator qe = qtestspecs_.end();
    for ( ; qi != qe; ++qi)
    {
        if ( qi->first->match(path) )
                me->addQReport(qi->second);
    }

    // Assign reference if we have one.
    std::string refdir;
    refdir.reserve(s_referenceDirName.size() + dir.size() + 2);
    refdir += s_referenceDirName;
    refdir += '/';
    refdir += dir;

    if (MonitorElement *refme = findObject(refdir, name))
    {
      me->data_.flags |= DQMNet::DQM_PROP_HAS_REFERENCE;
      me->reference_ = refme->object_;
    }

    // Return the monitor element.
    return me;
  }
}

MonitorElement *
DQMStore::book(const std::string &dir,
               const std::string &name,
               const char *context)
{
  assert(name.find('/') == std::string::npos);

  // Check if the request monitor element already exists.
  if (MonitorElement *me = findObject(dir, name))
  {
    if (verbose_ > 1)
    {
      std::string path;
      mergePath(path, dir, name);

      std::cout << "DQMStore: "
                << context << ": monitor element '"
                << path << "' already exists, resetting" << std::endl;
    }
    me->Reset();
    return me;
  }
  else
  {
    // Create it and return for initialisation.
    assert(dirs_.count(dir));
    MonitorElement nme(&*dirs_.find(dir), name);
    return &const_cast<MonitorElement &>(*data_.insert(nme).first);
  }
}

// -------------------------------------------------------------------
MonitorElement *
DQMStore::bookInt(const std::string &dir, const std::string &name)
{
  if (collateHistograms_)
  {
    if (MonitorElement *me = findObject(dir, name))
    {
      me->Fill(0);
      return me;
    }
  }

  return book(dir, name, "bookInt")
    ->initialise(MonitorElement::DQM_KIND_INT);
}

MonitorElement *
DQMStore::bookInt(const char *name)
{ return bookInt(pwd_, name); }

MonitorElement *
DQMStore::bookInt(const std::string &name)
{
  return bookInt(pwd_, name);
}

// -------------------------------------------------------------------
MonitorElement *
DQMStore::bookFloat(const std::string &dir, const std::string &name)
{
  if (collateHistograms_)
  {
    if (MonitorElement *me = findObject(dir, name))
    {
      me->Fill(0.);
      return me;
    }
  }

  return book(dir, name, "bookFloat")
    ->initialise(MonitorElement::DQM_KIND_REAL);
}

MonitorElement *
DQMStore::bookFloat(const char *name)
{ return bookFloat(pwd_, name); }

MonitorElement *
DQMStore::bookFloat(const std::string &name)
{
  return bookFloat(pwd_, name);
}

// -------------------------------------------------------------------
MonitorElement *
DQMStore::bookString(const std::string &dir,
                     const std::string &name,
                     const std::string &value)
{
  if (collateHistograms_)
  {
    if (MonitorElement *me = findObject(dir, name))
      return me;
  }

  return book(dir, name, "bookString")
    ->initialise(MonitorElement::DQM_KIND_STRING, value);
}

MonitorElement *
DQMStore::bookString(const char *name, const char *value)
{ return bookString(pwd_, name, value); }

MonitorElement *
DQMStore::bookString(const std::string &name, const std::string &value)
{
  return bookString(pwd_, name, value);
}

// -------------------------------------------------------------------
MonitorElement *
DQMStore::book1D(const std::string &dir, const std::string &name, TH1F *h)
{
  return book(dir, name, "book1D", MonitorElement::DQM_KIND_TH1F, h, collate1D);
}

MonitorElement *
DQMStore::book1S(const std::string &dir, const std::string &name, TH1S *h)
{
  return book(dir, name, "book1S", MonitorElement::DQM_KIND_TH1S, h, collate1S);
}

MonitorElement *
DQMStore::book1DD(const std::string &dir, const std::string &name, TH1D *h)
{
  return book(dir, name, "book1DD", MonitorElement::DQM_KIND_TH1D, h, collate1DD);
}

MonitorElement *
DQMStore::book1D(const char *name, const char *title,
                 int nchX, double lowX, double highX)
{
  return book1D(pwd_, name, new TH1F(name, title, nchX, lowX, highX));
}

MonitorElement *
DQMStore::book1D(const std::string &name, const std::string &title,
                 int nchX, double lowX, double highX)
{
  return book1D(pwd_, name, new TH1F(name.c_str(), title.c_str(), nchX, lowX, highX));
}

MonitorElement *
DQMStore::book1S(const char *name, const char *title,
                 int nchX, double lowX, double highX)
{
  return book1S(pwd_, name, new TH1S(name, title, nchX, lowX, highX));
}

MonitorElement *
DQMStore::book1S(const std::string &name, const std::string &title,
                 int nchX, double lowX, double highX)
{
  return book1S(pwd_, name, new TH1S(name.c_str(), title.c_str(), nchX, lowX, highX));
}

MonitorElement *
DQMStore::book1DD(const char *name, const char *title,
                  int nchX, double lowX, double highX)
{
  return book1DD(pwd_, name, new TH1D(name, title, nchX, lowX, highX));
}

MonitorElement *
DQMStore::book1DD(const std::string &name, const std::string &title,
                  int nchX, double lowX, double highX)
{
  return book1DD(pwd_, name, new TH1D(name.c_str(), title.c_str(), nchX, lowX, highX));
}

MonitorElement *
DQMStore::book1D(const char *name, const char *title,
                 int nchX, float *xbinsize)
{
  return book1D(pwd_, name, new TH1F(name, title, nchX, xbinsize));
}

MonitorElement *
DQMStore::book1D(const std::string &name, const std::string &title,
                 int nchX, float *xbinsize)
{
  return book1D(pwd_, name, new TH1F(name.c_str(), title.c_str(), nchX, xbinsize));
}

MonitorElement *
DQMStore::book1D(const char *name, TH1F *source)
{
  return book1D(pwd_, name, static_cast<TH1F *>(source->Clone(name)));
}

MonitorElement *
DQMStore::book1D(const std::string &name, TH1F *source)
{
  return book1D(pwd_, name, static_cast<TH1F *>(source->Clone(name.c_str())));
}

MonitorElement *
DQMStore::book1S(const char *name, TH1S *source)
{
  return book1S(pwd_, name, static_cast<TH1S *>(source->Clone(name)));
}

MonitorElement *
DQMStore::book1S(const std::string &name, TH1S *source)
{
  return book1S(pwd_, name, static_cast<TH1S *>(source->Clone(name.c_str())));
}

MonitorElement *
DQMStore::book1DD(const char *name, TH1D *source)
{
  return book1DD(pwd_, name, static_cast<TH1D *>(source->Clone(name)));
}

MonitorElement *
DQMStore::book1DD(const std::string &name, TH1D *source)
{
  return book1DD(pwd_, name, static_cast<TH1D *>(source->Clone(name.c_str())));
}

// -------------------------------------------------------------------
MonitorElement *
DQMStore::book2D(const std::string &dir, const std::string &name, TH2F *h)
{
  return book(dir, name, "book2D", MonitorElement::DQM_KIND_TH2F, h, collate2D);
}

MonitorElement *
DQMStore::book2S(const std::string &dir, const std::string &name, TH2S *h)
{
  return book(dir, name, "book2S", MonitorElement::DQM_KIND_TH2S, h, collate2S);
}

MonitorElement *
DQMStore::book2DD(const std::string &dir, const std::string &name, TH2D *h)
{
  return book(dir, name, "book2DD", MonitorElement::DQM_KIND_TH2D, h, collate2DD);
}

MonitorElement *
DQMStore::book2D(const char *name, const char *title,
                 int nchX, double lowX, double highX,
                 int nchY, double lowY, double highY)
{
  return book2D(pwd_, name, new TH2F(name, title,
                                     nchX, lowX, highX,
                                     nchY, lowY, highY));
}

MonitorElement *
DQMStore::book2D(const std::string &name, const std::string &title,
                 int nchX, double lowX, double highX,
                 int nchY, double lowY, double highY)
{
  return book2D(pwd_, name, new TH2F(name.c_str(), title.c_str(),
                                     nchX, lowX, highX,
                                     nchY, lowY, highY));
}

MonitorElement *
DQMStore::book2S(const char *name, const char *title,
                 int nchX, double lowX, double highX,
                 int nchY, double lowY, double highY)
{
  return book2S(pwd_, name, new TH2S(name, title,
                                     nchX, lowX, highX,
                                     nchY, lowY, highY));
}

MonitorElement *
DQMStore::book2S(const std::string &name, const std::string &title,
                 int nchX, double lowX, double highX,
                 int nchY, double lowY, double highY)
{
  return book2S(pwd_, name, new TH2S(name.c_str(), title.c_str(),
                                     nchX, lowX, highX,
                                     nchY, lowY, highY));
}

MonitorElement *
DQMStore::book2DD(const char *name, const char *title,
                  int nchX, double lowX, double highX,
                  int nchY, double lowY, double highY)
{
  return book2DD(pwd_, name, new TH2D(name, title,
                                      nchX, lowX, highX,
                                      nchY, lowY, highY));
}

MonitorElement *
DQMStore::book2DD(const std::string &name, const std::string &title,
                  int nchX, double lowX, double highX,
                  int nchY, double lowY, double highY)
{
  return book2DD(pwd_, name, new TH2D(name.c_str(), title.c_str(),
                                      nchX, lowX, highX,
                                      nchY, lowY, highY));
}

MonitorElement *
DQMStore::book2D(const char *name, const char *title,
                 int nchX, float *xbinsize, int nchY, float *ybinsize)
{
  return book2D(pwd_, name, new TH2F(name, title, 
                                     nchX, xbinsize, nchY, ybinsize));
}

MonitorElement *
DQMStore::book2D(const std::string &name, const std::string &title,
                 int nchX, float *xbinsize, int nchY, float *ybinsize)
{
  return book2D(pwd_, name, new TH2F(name.c_str(), title.c_str(), 
                                     nchX, xbinsize, nchY, ybinsize));
}

MonitorElement *
DQMStore::book2D(const char *name, TH2F *source)
{
  return book2D(pwd_, name, static_cast<TH2F *>(source->Clone(name)));
}

MonitorElement *
DQMStore::book2D(const std::string &name, TH2F *source)
{
  return book2D(pwd_, name, static_cast<TH2F *>(source->Clone(name.c_str())));
}

MonitorElement *
DQMStore::book2S(const char *name, TH2S *source)
{
  return book2S(pwd_, name, static_cast<TH2S *>(source->Clone(name)));
}

MonitorElement *
DQMStore::book2S(const std::string &name, TH2S *source)
{
  return book2S(pwd_, name, static_cast<TH2S *>(source->Clone(name.c_str())));
}

MonitorElement *
DQMStore::book2DD(const char *name, TH2D *source)
{
  return book2DD(pwd_, name, static_cast<TH2D *>(source->Clone(name)));
}

MonitorElement *
DQMStore::book2DD(const std::string &name, TH2D *source)
{
  return book2DD(pwd_, name, static_cast<TH2D *>(source->Clone(name.c_str())));
}

// -------------------------------------------------------------------
MonitorElement *
DQMStore::book3D(const std::string &dir, const std::string &name, TH3F *h)
{
  return book(dir, name, "book3D", MonitorElement::DQM_KIND_TH3F, h, collate3D);
}

MonitorElement *
DQMStore::book3D(const char *name, const char *title,
                 int nchX, double lowX, double highX,
                 int nchY, double lowY, double highY,
                 int nchZ, double lowZ, double highZ)
{
  return book3D(pwd_, name, new TH3F(name, title,
                                     nchX, lowX, highX,
                                     nchY, lowY, highY,
                                     nchZ, lowZ, highZ));
}

MonitorElement *
DQMStore::book3D(const std::string &name, const std::string &title,
                 int nchX, double lowX, double highX,
                 int nchY, double lowY, double highY,
                 int nchZ, double lowZ, double highZ)
{
  return book3D(pwd_, name, new TH3F(name.c_str(), title.c_str(),
                                     nchX, lowX, highX,
                                     nchY, lowY, highY,
                                     nchZ, lowZ, highZ));
}

MonitorElement *
DQMStore::book3D(const char *name, TH3F *source)
{
  return book3D(pwd_, name, static_cast<TH3F *>(source->Clone(name)));
}

MonitorElement *
DQMStore::book3D(const std::string &name, TH3F *source)
{
  return book3D(pwd_, name, static_cast<TH3F *>(source->Clone(name.c_str())));
}

// -------------------------------------------------------------------
MonitorElement *
DQMStore::bookProfile(const std::string &dir, const std::string &name, TProfile *h)
{
  return book(dir, name, "bookProfile",
              MonitorElement::DQM_KIND_TPROFILE,
              h, collateProfile);
}

MonitorElement *
DQMStore::bookProfile(const char *name, const char *title,
                      int nchX, double lowX, double highX,
                      int /* nchY */, double lowY, double highY,
                      const char *option /* = "s" */)
{
  return bookProfile(pwd_, name, new TProfile(name, title,
                                              nchX, lowX, highX,
                                              lowY, highY,
                                              option));
}

MonitorElement *
DQMStore::bookProfile(const std::string &name, const std::string &title,
                      int nchX, double lowX, double highX,
                      int /* nchY */, double lowY, double highY,
                      const char *option /* = "s" */)
{
  return bookProfile(pwd_, name, new TProfile(name.c_str(), title.c_str(),
                                              nchX, lowX, highX,
                                              lowY, highY,
                                              option));
}

MonitorElement *
DQMStore::bookProfile(const char *name, const char *title,
                      int nchX, double lowX, double highX,
                      double lowY, double highY,
                      const char *option /* = "s" */)
{
  return bookProfile(pwd_, name, new TProfile(name, title,
                                              nchX, lowX, highX,
                                              lowY, highY,
                                              option));
}

MonitorElement *
DQMStore::bookProfile(const std::string &name, const std::string &title,
                      int nchX, double lowX, double highX,
                      double lowY, double highY,
                      const char *option /* = "s" */)
{
  return bookProfile(pwd_, name, new TProfile(name.c_str(), title.c_str(),
                                              nchX, lowX, highX,
                                              lowY, highY,
                                              option));
}

MonitorElement *
DQMStore::bookProfile(const char *name, const char *title,
                      int nchX, double *xbinsize,
                      int /* nchY */, double lowY, double highY,
                      const char *option /* = "s" */)
{
  return bookProfile(pwd_, name, new TProfile(name, title,
                                              nchX, xbinsize,
                                              lowY, highY,
                                              option));
}

MonitorElement *
DQMStore::bookProfile(const std::string &name, const std::string &title,
                      int nchX, double *xbinsize,
                      int /* nchY */, double lowY, double highY,
                      const char *option /* = "s" */)
{
  return bookProfile(pwd_, name, new TProfile(name.c_str(), title.c_str(),
                                              nchX, xbinsize,
                                              lowY, highY,
                                              option));
}

MonitorElement *
DQMStore::bookProfile(const char *name, const char *title,
                      int nchX, double *xbinsize,
                      double lowY, double highY,
                      const char *option /* = "s" */)
{
  return bookProfile(pwd_, name, new TProfile(name, title,
                                              nchX, xbinsize,
                                              lowY, highY,
                                              option));
}

MonitorElement *
DQMStore::bookProfile(const std::string &name, const std::string &title,
                      int nchX, double *xbinsize,
                      double lowY, double highY,
                      const char *option /* = "s" */)
{
  return bookProfile(pwd_, name, new TProfile(name.c_str(), title.c_str(),
                                              nchX, xbinsize,
                                              lowY, highY,
                                              option));
}

MonitorElement *
DQMStore::bookProfile(const char *name, TProfile *source)
{
  return bookProfile(pwd_, name, static_cast<TProfile *>(source->Clone(name)));
}

MonitorElement *
DQMStore::bookProfile(const std::string &name, TProfile *source)
{
  return bookProfile(pwd_, name, static_cast<TProfile *>(source->Clone(name.c_str())));
}

// -------------------------------------------------------------------
MonitorElement *
DQMStore::bookProfile2D(const std::string &dir, const std::string &name, TProfile2D *h)
{
  return book(dir, name, "bookProfile2D",
              MonitorElement::DQM_KIND_TPROFILE2D,
              h, collateProfile2D);
}

MonitorElement *
DQMStore::bookProfile2D(const char *name, const char *title,
                        int nchX, double lowX, double highX,
                        int nchY, double lowY, double highY,
                        int /* nchZ */, double lowZ, double highZ,
                        const char *option /* = "s" */)
{
  return bookProfile2D(pwd_, name, new TProfile2D(name, title,
                                                  nchX, lowX, highX,
                                                  nchY, lowY, highY,
                                                  lowZ, highZ,
                                                  option));
}

MonitorElement *
DQMStore::bookProfile2D(const std::string &name, const std::string &title,
                        int nchX, double lowX, double highX,
                        int nchY, double lowY, double highY,
                        int /* nchZ */, double lowZ, double highZ,
                        const char *option /* = "s" */)
{
  return bookProfile2D(pwd_, name, new TProfile2D(name.c_str(), title.c_str(),
                                                  nchX, lowX, highX,
                                                  nchY, lowY, highY,
                                                  lowZ, highZ,
                                                  option));
}

MonitorElement *
DQMStore::bookProfile2D(const char *name, const char *title,
                        int nchX, double lowX, double highX,
                        int nchY, double lowY, double highY,
                        double lowZ, double highZ,
                        const char *option /* = "s" */)
{
  return bookProfile2D(pwd_, name, new TProfile2D(name, title,
                                                  nchX, lowX, highX,
                                                  nchY, lowY, highY,
                                                  lowZ, highZ,
                                                  option));
}

MonitorElement *
DQMStore::bookProfile2D(const std::string &name, const std::string &title,
                        int nchX, double lowX, double highX,
                        int nchY, double lowY, double highY,
                        double lowZ, double highZ,
                        const char *option /* = "s" */)
{
  return bookProfile2D(pwd_, name, new TProfile2D(name.c_str(), title.c_str(),
                                                  nchX, lowX, highX,
                                                  nchY, lowY, highY,
                                                  lowZ, highZ,
                                                  option));
}

MonitorElement *
DQMStore::bookProfile2D(const char *name, TProfile2D *source)
{
  return bookProfile2D(pwd_, name, static_cast<TProfile2D *>(source->Clone(name)));
}

MonitorElement *
DQMStore::bookProfile2D(const std::string &name, TProfile2D *source)
{
  return bookProfile2D(pwd_, name, static_cast<TProfile2D *>(source->Clone(name.c_str())));
}

bool
DQMStore::checkBinningMatches(MonitorElement *me, TH1 *h)
{
  if (me->getTH1()->GetNbinsX() != h->GetNbinsX()
      || me->getTH1()->GetNbinsY() != h->GetNbinsY()
      || me->getTH1()->GetNbinsZ() != h->GetNbinsZ()
      || me->getTH1()->GetXaxis()->GetXmin() != h->GetXaxis()->GetXmin()
      || me->getTH1()->GetYaxis()->GetXmin() != h->GetYaxis()->GetXmin()
      || me->getTH1()->GetZaxis()->GetXmin() != h->GetZaxis()->GetXmin()
      || me->getTH1()->GetXaxis()->GetXmax() != h->GetXaxis()->GetXmax()
      || me->getTH1()->GetYaxis()->GetXmax() != h->GetYaxis()->GetXmax()
      || me->getTH1()->GetZaxis()->GetXmax() != h->GetZaxis()->GetXmax())
  {
    //  edm::LogWarning ("DQMStore")
    std::cout << "*** DQMStore: WARNING:"
              << "checkBinningMatches: different binning - cannot add object '"
              << h->GetName() << "' of type "
              << h->IsA()->GetName() << " to existing ME: '"
              << me->getFullname() << "'\n";
    return false;
  }
  return true;     
}

void
DQMStore::collate1D(MonitorElement *me, TH1F *h)
{ 
  if (checkBinningMatches(me,h)) 
    me->getTH1F()->Add(h); 
}

void
DQMStore::collate1S(MonitorElement *me, TH1S *h)
{  
  if (checkBinningMatches(me,h)) 
    me->getTH1S()->Add(h); 
}

void
DQMStore::collate1DD(MonitorElement *me, TH1D *h)
{  
  if (checkBinningMatches(me,h)) 
    me->getTH1D()->Add(h); 
}

void
DQMStore::collate2D(MonitorElement *me, TH2F *h)
{  
  if (checkBinningMatches(me,h)) 
    me->getTH2F()->Add(h); 
}

void
DQMStore::collate2S(MonitorElement *me, TH2S *h)
{  
  if (checkBinningMatches(me,h)) 
    me->getTH2S()->Add(h); 
}

void
DQMStore::collate2DD(MonitorElement *me, TH2D *h)
{  
  if (checkBinningMatches(me,h)) 
    me->getTH2D()->Add(h); 
}

void
DQMStore::collate3D(MonitorElement *me, TH3F *h)
{  
  if (checkBinningMatches(me,h)) 
    me->getTH3F()->Add(h); 
}

void
DQMStore::collateProfile(MonitorElement *me, TProfile *h)
{
  if (checkBinningMatches(me,h)) 
  {
    TProfile *meh = me->getTProfile();
    me->addProfiles(h, meh, meh, 1, 1);
  }
}

void
DQMStore::collateProfile2D(MonitorElement *me, TProfile2D *h)
{
  if (checkBinningMatches(me,h)) 
  {
    TProfile2D *meh = me->getTProfile2D();
    me->addProfiles(h, meh, meh, 1, 1);
  }
}

void
DQMStore::tag(MonitorElement *me, unsigned int myTag)
{
  if (! myTag)
    raiseDQMError("DQMStore", "Attempt to tag monitor element '%s'"
                  " with a zero tag", me->getFullname().c_str());
  if ((me->data_.flags & DQMNet::DQM_PROP_TAGGED) && myTag != me->data_.tag)
    raiseDQMError("DQMStore", "Attempt to tag monitor element '%s'"
                  " twice with multiple tags", me->getFullname().c_str());

  me->data_.tag = myTag;
  me->data_.flags |= DQMNet::DQM_PROP_TAGGED;
}

void
DQMStore::tag(const std::string &path, unsigned int myTag)
{
  std::string dir;
  std::string name;
  splitPath(dir, name, path);

  if (MonitorElement *me = findObject(dir, name))
    tag(me, myTag);
  else
    raiseDQMError("DQMStore", "Attempt to tag non-existent monitor element"
                  " '%s' with tag %u", path.c_str(), myTag);

}

void
DQMStore::tagContents(const std::string &path, unsigned int myTag)
{
  MonitorElement proto(&path, std::string());
  MEMap::iterator e = data_.end();
  MEMap::iterator i = data_.lower_bound(proto);
  for ( ; i != e && path == *i->data_.dirname; ++i)
    tag(const_cast<MonitorElement *>(&*i), myTag);
}

void
DQMStore::tagAllContents(const std::string &path, unsigned int myTag)
{
  std::string clean;
  const std::string *cleaned = 0;
  cleanTrailingSlashes(path, clean, cleaned);
  MonitorElement proto(cleaned, std::string());

  // FIXME: WILDCARDS? Old one supported them, but nobody seemed to use them.
  MEMap::iterator e = data_.end();
  MEMap::iterator i = data_.lower_bound(proto);
  while (i != e && isSubdirectory(*cleaned, *i->data_.dirname))
  {
    tag(const_cast<MonitorElement *>(&*i), myTag);
    ++i;
  }
}

std::vector<std::string>
DQMStore::getSubdirs(void) const
{
  std::vector<std::string> result;
  std::set<std::string>::const_iterator e = dirs_.end();
  std::set<std::string>::const_iterator i = dirs_.find(pwd_);

  // If we didn't find current directory, the tree is empty, so quit.
  if (i == e)
    return result;

  // Skip the current directory and then start looking for immediate
  // subdirectories in the dirs_ list.  Stop when we are no longer in
  // (direct or indirect) subdirectories of pwd_.  Note that we don't
  // "know" which order the set will sort A/B, A/B/C and A/D.
  while (++i != e && isSubdirectory(pwd_, *i))
    if (i->find('/', pwd_.size()+1) == std::string::npos)
      result.push_back(*i);

  return result;
}

std::vector<std::string>
DQMStore::getMEs(void) const
{
  MonitorElement proto(&pwd_, std::string());
  std::vector<std::string> result;
  MEMap::const_iterator e = data_.end();
  MEMap::const_iterator i = data_.lower_bound(proto);
  for ( ; i != e && isSubdirectory(pwd_, *i->data_.dirname); ++i)
    if (pwd_ == *i->data_.dirname)
      result.push_back(i->getName());

  return result;
}

bool
DQMStore::containsAnyMonitorable(const std::string &path) const
{
  MonitorElement proto(&path, std::string());
  MEMap::const_iterator e = data_.end();
  MEMap::const_iterator i = data_.lower_bound(proto);
  return (i != e && isSubdirectory(path, *i->data_.dirname));
}

MonitorElement *
DQMStore::get(const std::string &path) const
{
  std::string dir;
  std::string name;
  splitPath(dir, name, path);
  MonitorElement proto(&dir, name);
  MEMap::const_iterator mepos = data_.find(proto);
  return (mepos == data_.end() ? 0
          : const_cast<MonitorElement *>(&*mepos));
}

std::vector<MonitorElement *>
DQMStore::get(unsigned int tag) const
{
  // FIXME: Use reverse map [tag -> path] / [tag -> dir]?
  std::vector<MonitorElement *> result;
  for (MEMap::const_iterator i = data_.begin(), e = data_.end(); i != e; ++i)
  {
    const MonitorElement &me = *i;
    if ((me.data_.flags & DQMNet::DQM_PROP_TAGGED) && me.data_.tag == tag)
      result.push_back(const_cast<MonitorElement *>(&me));
  }
  return result;
}

std::vector<MonitorElement *>
DQMStore::getContents(const std::string &path) const
{
  std::string clean;
  const std::string *cleaned = 0;
  cleanTrailingSlashes(path, clean, cleaned);
  MonitorElement proto(cleaned, std::string());

  std::vector<MonitorElement *> result;
  MEMap::const_iterator e = data_.end();
  MEMap::const_iterator i = data_.lower_bound(proto);
  for ( ; i != e && isSubdirectory(*cleaned, *i->data_.dirname); ++i)
    if (*cleaned == *i->data_.dirname)
      result.push_back(const_cast<MonitorElement *>(&*i));

  return result;
}

std::vector<MonitorElement *>
DQMStore::getContents(const std::string &path, unsigned int tag) const
{
  std::string clean;
  const std::string *cleaned = 0;
  cleanTrailingSlashes(path, clean, cleaned);
  MonitorElement proto(cleaned, std::string());

  std::vector<MonitorElement *> result;
  MEMap::const_iterator e = data_.end();
  MEMap::const_iterator i = data_.lower_bound(proto);
  for ( ; i != e && isSubdirectory(*cleaned, *i->data_.dirname); ++i)
    if (*cleaned == *i->data_.dirname
        && (i->data_.flags & DQMNet::DQM_PROP_TAGGED)
        && i->data_.tag == tag)
      result.push_back(const_cast<MonitorElement *>(&*i));

  return result;
}

void
DQMStore::getContents(std::vector<std::string> &into, bool showContents /* = true */) const
{
  into.clear();
  into.reserve(dirs_.size());

  MEMap::const_iterator me = data_.end();
  std::set<std::string>::const_iterator di = dirs_.begin();
  std::set<std::string>::const_iterator de = dirs_.end();
  for ( ; di != de; ++di)
  {
    MonitorElement proto(&*di, std::string());
    MEMap::const_iterator mi = data_.lower_bound(proto);
    MEMap::const_iterator m = mi;
    size_t sz = di->size() + 2;
    size_t nfound = 0;
    for ( ; m != me && isSubdirectory(*di, *m->data_.dirname); ++m)
      if (*di == *m->data_.dirname)
      {
        sz += m->data_.objname.size() + 1;
        ++nfound;
      }

    if (! nfound)
      continue;

    std::vector<std::string>::iterator istr
      = into.insert(into.end(), std::string());

    if (showContents)
    {
      istr->reserve(sz);

      *istr += *di;
      *istr += ':';
      for (sz = 0; mi != m; ++mi)
      {
        if (*di != *mi->data_.dirname)
          continue;

        if (sz > 0)
          *istr += ',';

        *istr += mi->data_.objname;
        ++sz;
      }
    }
    else
    {
      istr->reserve(di->size() + 2);
      *istr += *di;
      *istr += ':';
    }
  }
}

MonitorElement *
DQMStore::findObject(const std::string &dir, const std::string &name) const
{
  if (dir.find_first_not_of(s_safe) != std::string::npos)
    raiseDQMError("DQMStore", "Monitor element path name '%s' uses"
                  " unacceptable characters", dir.c_str());
  if (name.find_first_not_of(s_safe) != std::string::npos)
    raiseDQMError("DQMStore", "Monitor element path name '%s' uses"
                  " unacceptable characters", name.c_str());

  MonitorElement proto;
  proto.data_.dirname = &dir;
  proto.data_.objname = name;

  MEMap::const_iterator mepos = data_.find(proto);
  return (mepos == data_.end() ? 0
          : const_cast<MonitorElement *>(&*mepos));
}

void
DQMStore::getAllTags(std::vector<std::string> &into) const
{
  into.clear();
  into.reserve(dirs_.size());

  MEMap::const_iterator me = data_.end();
  std::set<std::string>::const_iterator di = dirs_.begin();
  std::set<std::string>::const_iterator de = dirs_.end();
  char tagbuf[32]; // more than enough for '/' and up to 10 digits

  for ( ; di != de; ++di)
  {
    MonitorElement proto(&*di, std::string());
    MEMap::const_iterator mi = data_.lower_bound(proto);
    MEMap::const_iterator m = mi;
    size_t sz = di->size() + 2;
    size_t nfound = 0;
    for ( ; m != me && isSubdirectory(*di, *m->data_.dirname); ++m)
      if (*di == *m->data_.dirname && (m->data_.flags & DQMNet::DQM_PROP_TAGGED))
      {
        // the tags count for '/' + up to 10 digits, otherwise ',' + ME name
        sz += 1 + m->data_.objname.size() + 11;
        ++nfound;
      }

    if (! nfound)
      continue;

    std::vector<std::string>::iterator istr
      = into.insert(into.end(), std::string());

    istr->reserve(sz);

    *istr += *di;
    *istr += ':';
    for (sz = 0; mi != m; ++mi)
    {
      if (*di == *m->data_.dirname && (m->data_.flags & DQMNet::DQM_PROP_TAGGED))
      {
        sprintf(tagbuf, "/%u", mi->data_.tag);
        if (sz > 0)
          *istr += ',';
        *istr += m->data_.objname;
        *istr += tagbuf;
        ++sz;
      }
    }
  }
}

std::vector<MonitorElement*>
DQMStore::getAllContents(const std::string &path) const
{
  std::string clean;
  const std::string *cleaned = 0;
  cleanTrailingSlashes(path, clean, cleaned);
  MonitorElement proto(cleaned, std::string());

  std::vector<MonitorElement *> result;
  MEMap::const_iterator e = data_.end();
  MEMap::const_iterator i = data_.lower_bound(proto);
  for ( ; i != e && isSubdirectory(*cleaned, *i->data_.dirname); ++i)
    result.push_back(const_cast<MonitorElement *>(&*i));

  return result;
}

std::vector<MonitorElement*>
DQMStore::getMatchingContents(const std::string &pattern, lat::Regexp::Syntax syntaxType /* = Wildcard */) const
{
  lat::Regexp rx;
  try
  {
    rx = lat::Regexp(pattern, 0, syntaxType);
    rx.study();
  }
  catch (lat::Error &e)
  {
    raiseDQMError("DQMStore", "Invalid regular expression '%s': %s",
                  pattern.c_str(), e.explain().c_str());
  }

  std::string path;
  std::vector<MonitorElement *> result;
  MEMap::const_iterator i = data_.begin();
  MEMap::const_iterator e = data_.end();
  for ( ; i != e; ++i)
  {
    path.clear();
    mergePath(path, *i->data_.dirname, i->data_.objname);
    if (rx.match(path))
      result.push_back(const_cast<MonitorElement *>(&*i));
  }

  return result;
}


void
DQMStore::reset(void)
{
  MEMap::iterator mi = data_.begin();
  MEMap::iterator me = data_.end();
  for ( ; mi != me; ++mi)
  {
    MonitorElement &me = const_cast<MonitorElement &>(*mi);
    if (mi->wasUpdated())
    {
      if (me.resetMe())
        me.Reset();
      me.resetUpdate();
    }
  }

  reset_ = true;
}


void
DQMStore::forceReset(void)
{
  MEMap::iterator mi = data_.begin();
  MEMap::iterator me = data_.end();
  for ( ; mi != me; ++mi)
  {
    MonitorElement &me = const_cast<MonitorElement &>(*mi);
    me.Reset();
    me.resetUpdate();
  }

  reset_ = true;
}

bool
DQMStore::extract(TObject *obj, const std::string &dir, bool overwrite)
{
  // NB: Profile histograms inherit from TH*D, checking order matters.
  MonitorElement *refcheck = 0;
  if (TProfile *h = dynamic_cast<TProfile *>(obj))
  {
    MonitorElement *me = findObject(dir, h->GetName());
    if (! me)
      me = bookProfile(dir, h->GetName(), (TProfile *) h->Clone());
    else if (overwrite)
      me->copyFrom(h);
    else if (isCollateME(me) || collateHistograms_)
      collateProfile(me, h);
    refcheck = me;
  }
  else if (TProfile2D *h = dynamic_cast<TProfile2D *>(obj))
  {
    MonitorElement *me = findObject(dir, h->GetName());
    if (! me)
      me = bookProfile2D(dir, h->GetName(), (TProfile2D *) h->Clone());
    else if (overwrite)
      me->copyFrom(h);
    else if (isCollateME(me) || collateHistograms_)
      collateProfile2D(me, h);
    refcheck = me;
  }
  else if (TH1F *h = dynamic_cast<TH1F *>(obj))
  {
    MonitorElement *me = findObject(dir, h->GetName());
    if (! me)
      me = book1D(dir, h->GetName(), (TH1F *) h->Clone());
    else if (overwrite)
      me->copyFrom(h);
    else if (isCollateME(me) || collateHistograms_)
      collate1D(me, h);
    refcheck = me;
  }
  else if (TH1S *h = dynamic_cast<TH1S *>(obj))
  {
    MonitorElement *me = findObject(dir, h->GetName());
    if (! me)
      me = book1S(dir, h->GetName(), (TH1S *) h->Clone());
    else if (overwrite)
      me->copyFrom(h);
    else if (isCollateME(me) || collateHistograms_)
      collate1S(me, h);
    refcheck = me;
  }
  else if (TH1D *h = dynamic_cast<TH1D *>(obj))
  {
    MonitorElement *me = findObject(dir, h->GetName());
    if (! me)
      me = book1DD(dir, h->GetName(), (TH1D *) h->Clone());
    else if (overwrite)
      me->copyFrom(h);
    else if (isCollateME(me) || collateHistograms_)
      collate1DD(me, h);
    refcheck = me;
  }
  else if (TH2F *h = dynamic_cast<TH2F *>(obj))
  {
    MonitorElement *me = findObject(dir, h->GetName());
    if (! me)
      me = book2D(dir, h->GetName(), (TH2F *) h->Clone());
    else if (overwrite)
      me->copyFrom(h);
    else if (isCollateME(me) || collateHistograms_)
      collate2D(me, h);
    refcheck = me;
  }
  else if (TH2S *h = dynamic_cast<TH2S *>(obj))
  {
    MonitorElement *me = findObject(dir, h->GetName());
    if (! me)
      me = book2S(dir, h->GetName(), (TH2S *) h->Clone());
    else if (overwrite)
      me->copyFrom(h);
    else if (isCollateME(me) || collateHistograms_)
      collate2S(me, h);
    refcheck = me;
  }
  else if (TH2D *h = dynamic_cast<TH2D *>(obj))
  {
    MonitorElement *me = findObject(dir, h->GetName());
    if (! me)
      me = book2DD(dir, h->GetName(), (TH2D *) h->Clone());
    else if (overwrite)
      me->copyFrom(h);
    else if (isCollateME(me) || collateHistograms_)
      collate2DD(me, h);
    refcheck = me;
  }
  else if (TH3F *h = dynamic_cast<TH3F *>(obj))
  {
    MonitorElement *me = findObject(dir, h->GetName());
    if (! me)
      me = book3D(dir, h->GetName(), (TH3F *) h->Clone());
    else if (overwrite)
      me->copyFrom(h);
    else if (isCollateME(me) || collateHistograms_)
      collate3D(me, h);
    refcheck = me;
  }
  else if (dynamic_cast<TObjString *>(obj))
  {
    lat::RegexpMatch m;
    if (! s_rxmeval.match(obj->GetName(), 0, 0, &m))
    {
      if (strstr(obj->GetName(), "CMSSW"))
      {
        if (verbose_)
          std::cout << "Input file version: " << obj->GetName() << std::endl;
        return true;
      }
      else if (strstr(obj->GetName(), "DQMPATCH"))
      {
        if (verbose_)
          std::cout << "DQM patch version: " << obj->GetName() << std::endl;
        return true;
      }
      else
      {
        std::cout << "*** DQMStore: WARNING: cannot extract object '"
                  << obj->GetName() << "' of type '"
                  << obj->IsA()->GetName() << "'\n";
        return false;
      }
    }

    std::string label = m.matchString(obj->GetName(), 1);
    std::string kind = m.matchString(obj->GetName(), 2);
    std::string value = m.matchString(obj->GetName(), 3);

    if (kind == "i")
    {
      MonitorElement *me = findObject(dir, label);
      if (! me || overwrite)
      {
        if (! me) me = bookInt(dir, label);
        me->Fill(atoll(value.c_str()));
      }
    }
    else if (kind == "f")
    {
      MonitorElement *me = findObject(dir, label);
      if (! me || overwrite)
      {
        if (! me) me = bookFloat(dir, label);
        me->Fill(atof(value.c_str()));
      }
    }
    else if (kind == "s")
    {
      MonitorElement *me = findObject(dir, label);
      if (! me)
        me = bookString(dir, label, value);
      else if (overwrite)
        me->Fill(value);
    }
    else if (kind == "e")
    {
      MonitorElement *me = findObject(dir, label);
      if (! me)
      {
        std::cout << "*** DQMStore: WARNING: no monitor element '"
                  << label << "' in directory '"
                  << dir << "' to be marked as efficiency plot.\n";
        return false;
      }
      me->setEfficiencyFlag();
    }
    else if (kind == "t")
    {
      MonitorElement *me = findObject(dir, label);
      if (! me)
      {
        std::cout << "*** DQMStore: WARNING: no monitor element '"
                  << label << "' in directory '"
                  << dir << "' for a tag\n";
        return false;
      }
      errno = 0;
      char *endp = 0;
      unsigned long val = strtoul(value.c_str(), &endp, 10);
      if ((val == 0 && errno) || *endp || val > ~uint32_t(0))
      {
        std::cout << "*** DQMStore: WARNING: cannot restore tag '"
                  << value << "' for monitor element '"
                  << label << "' in directory '"
                  << dir << "' - invalid value\n";
        return false;
      }
      tag(me, val);
    }
    else if (kind == "qr")
    {
      // Handle qreports, but skip them while reading in references.
      if (! isSubdirectory(s_referenceDirName, dir))
      {
        size_t dot = label.find('.');
        if (dot == std::string::npos)
        {
          std::cout << "*** DQMStore: WARNING: quality report label in '" << label
                    << "' is missing a '.' and cannot be extracted\n";
          return false;
        }

        std::string mename (label, 0, dot);
        std::string qrname (label, dot+1, std::string::npos);

        m.reset();
        DQMNet::QValue qv;
        if (s_rxmeqr1.match(value, 0, 0, &m))
        {
          qv.code = atoi(m.matchString(value, 1).c_str());
          qv.qtresult = strtod(m.matchString(value, 2).c_str(), 0);
          qv.message = m.matchString(value, 4);
          qv.qtname = qrname;
          qv.algorithm = m.matchString(value, 3);
        }
        else if (s_rxmeqr2.match(value, 0, 0, &m))
        {
          qv.code = atoi(m.matchString(value, 1).c_str());
          qv.qtresult = 0; // unavailable in old format
          qv.message = m.matchString(value, 2);
          qv.qtname = qrname;
          // qv.algorithm unavailable in old format
        }
        else
        {
          std::cout << "*** DQMStore: WARNING: quality test value '"
                    << value << "' is incorrectly formatted\n";
          return false;
        }

        MonitorElement *me = findObject(dir, mename);
        if (! me)
        {
          std::cout << "*** DQMStore: WARNING: no monitor element '"
                    << mename << "' in directory '"
                    << dir << "' for quality test '"
                    << label << "'\n";
          return false;
        }

        me->addQReport(qv, /* FIXME: getQTest(qv.qtname)? */ 0);
      }
    }
    else
    {
      std::cout << "*** DQMStore: WARNING: cannot extract object '"
                << obj->GetName() << "' of type '"
                << obj->IsA()->GetName() << "'\n";
      return false;
    }
  }
  else if (TNamed *n = dynamic_cast<TNamed *>(obj))
  {
    // For old DQM data.
    std::string s;
    s.reserve(6 + strlen(n->GetTitle()) + 2*strlen(n->GetName()));
    s += '<'; s += n->GetName(); s += '>';
    s += n->GetTitle();
    s += '<'; s += '/'; s += n->GetName(); s += '>';
    TObjString os(s.c_str());
    return extract(&os, dir, overwrite);
  }
  else
  {
    std::cout << "*** DQMStore: WARNING: cannot extract object '"
              << obj->GetName() << "' of type '" << obj->IsA()->GetName()
              << "' and with title '" << obj->GetTitle() << "'\n";
    return false;
  }

  // If we just read in a reference monitor element, and there is a
  // monitor element with the same name, link the two together. The
  // other direction is handled by the initialise() method.
  if (refcheck && isSubdirectory(s_referenceDirName, dir))
  {
    std::string mdir(dir, s_referenceDirName.size()+1, std::string::npos);
    if (MonitorElement *master = findObject(mdir, obj->GetName()))
    {
      master->data_.flags |= DQMNet::DQM_PROP_HAS_REFERENCE;
      master->reference_ = refcheck->object_;
    }
  }

  return true;
}

bool
DQMStore::cdInto(const std::string &path) const
{
  assert(! path.empty());

  // Find the first path component.
  size_t start = 0;
  size_t end = path.find('/', start);
  if (end == std::string::npos)
    end = path.size();

  while (true)
  {
    // Check if this subdirectory component exists.  If yes, make sure
    // it is actually a subdirectory.  Otherwise create or cd into it.
    std::string part(path, start, end-start);
    TObject *o = gDirectory->Get(part.c_str());
    if (o && ! dynamic_cast<TDirectory *>(o))
      raiseDQMError("DQMStore", "Attempt to create directory '%s' in a file"
                    " fails because the part '%s' already exists and is not"
                    " directory", path.c_str(), part.c_str());
    else if (! o)
      gDirectory->mkdir(part.c_str());

    if (! gDirectory->cd(part.c_str()))
      raiseDQMError("DQMStore", "Attempt to create directory '%s' in a file"
                    " fails because could not cd into subdirectory '%s'",
                    path.c_str(), part.c_str());

    // Stop if we reached the end, ignoring any trailing '/'.
    if (end+1 >= path.size())
      break;

    // Find the next path component.
    start = end+1;
    end = path.find('/', start);
    if (end == std::string::npos)
      end = path.size();
  }

  return true;
}

void
DQMStore::save(const std::string &filename,
               const std::string &path /* = "" */,
               const std::string &pattern /* = "" */,
               const std::string &rewrite /* = "" */,
               SaveReferenceTag ref /* = SaveWithReference */,
               int minStatus /* = dqm::qstatus::STATUS_OK */,
               const std::string &fileupdate /* = RECREATE */)
{
  std::set<std::string>::iterator di, de;
  MEMap::iterator mi, me = data_.end();
  DQMNet::QReports::const_iterator qi, qe;
  int nme=0;

  // TFile flushes to disk with fsync() on every TDirectory written to the
  // file.  This makes DQM file saving painfully slow, and ironically makes
  // it _more_ likely the file saving gets interrupted and corrupts the file.
  // The utility class below simply ignores the flush synchronisation.
  class TFileNoSync : public TFile
  {
  public:
    TFileNoSync(const char *file, const char *opt) : TFile(file, opt) {}
    virtual Int_t SysSync(Int_t) { return 0; }
  };

  // open output file, on 1st save recreate, later update
  if (verbose_)
    std::cout << "\n DQMStore: Opening TFile '" << filename 
              << "' with option '" << fileupdate <<"'\n";

  TFileNoSync f(filename.c_str(), fileupdate.c_str()); // open file
  if(f.IsZombie())
    raiseDQMError("DQMStore", "Failed to create/update file '%s'", filename.c_str());
  f.cd();
  
  // Construct a regular expression from the pattern string.
  std::auto_ptr<lat::Regexp> rxpat;
  if (! pattern.empty())
    rxpat.reset(new lat::Regexp(pattern.c_str()));

  // Prepare a path for the reference object selection.
  std::string refpath;
  refpath.reserve(s_referenceDirName.size() + path.size() + 2);
  refpath += s_referenceDirName;
  if (! path.empty())
  {
    refpath += '/';
    refpath += path;
  }

  // Loop over the directory structure.
  for (di = dirs_.begin(), de = dirs_.end(); di != de; ++di)
  {
    // Check if we should process this directory.  We process the
    // requested part of the object tree, including references.
    if (! path.empty()
        && ! isSubdirectory(path, *di)
        && ! isSubdirectory(refpath, *di))
      continue;
    
    // Loop over monitor elements in this directory.
    MonitorElement proto(&*di, std::string());
    mi = data_.lower_bound(proto);
    for ( ; mi != me && isSubdirectory(*di, *mi->data_.dirname); ++mi)
    {
      // Skip if it isn't a direct child.
      if (*di != *mi->data_.dirname)
        continue;

      // Handle reference histograms, with three distinct cases:
      // 1) Skip all references entirely on saving.
      // 2) Blanket saving of all references.
      // 3) Save only references for monitor elements with qtests.
      // The latter two are affected by "path" sub-tree selection,
      // i.e. references are saved only in the selected tree part.
      if (isSubdirectory(refpath, *mi->data_.dirname))
      {
        if (ref == SaveWithoutReference)
          // Skip the reference entirely.
          continue;
        else if (ref == SaveWithReference)
          // Save all references regardless of qtests.
          ;
        else if (ref == SaveWithReferenceForQTest)
        {
          // Save only references for monitor elements with qtests
          // with an optional cut on minimum quality test result.
          int status = -1;
          std::string mname(mi->getFullname(), s_referenceDirName.size()+1, std::string::npos);
          MonitorElement *master = get(mname);
          if (master)
            for (size_t i = 0, e = master->data_.qreports.size(); i != e; ++i)
              status = std::max(status, master->data_.qreports[i].code);

          if (! master || status < minStatus)
          {
            if (verbose_ > 1)
              std::cout << "DQMStore::save: skipping monitor element '"
                        << mi->data_.objname << "' while saving, status is "
                        << status << ", required minimum status is "
                        << minStatus << std::endl;
            continue;
          }
        }
      }

      if (verbose_ > 1)
        std::cout << "DQMStore::save: saving monitor element '"
                  << mi->data_.objname << "'\n";
      nme++; // count saved histograms

      // Create the directory.
      gDirectory->cd("/");
      if (di->empty())
        cdInto(s_monitorDirName);
      else if (rxpat.get())
        cdInto(s_monitorDirName + '/' + lat::StringOps::replace(*di, *rxpat, rewrite));
      else
        cdInto(s_monitorDirName + '/' + *di);

      // Save the object.
      switch (mi->kind())
      {
      case MonitorElement::DQM_KIND_INT:
      case MonitorElement::DQM_KIND_REAL:
      case MonitorElement::DQM_KIND_STRING:
        TObjString(mi->tagString().c_str()).Write();
        break;

      default:
        mi->object_->Write();
        break;
      }

      // Save quality reports if this is not in reference section.
      if (! isSubdirectory(s_referenceDirName, *mi->data_.dirname))
      {
        qi = mi->data_.qreports.begin();
        qe = mi->data_.qreports.end();
        for ( ; qi != qe; ++qi)
          TObjString(mi->qualityTagString(*qi).c_str()).Write();
      }

      // Save efficiency tag, if any
      if (mi->data_.flags & DQMNet::DQM_PROP_EFFICIENCY_PLOT)
        TObjString(mi->effLabelString().c_str()).Write();

      // Save tag if any
      if (mi->data_.flags & DQMNet::DQM_PROP_TAGGED)
        TObjString(mi->tagLabelString().c_str()).Write();
    }
  }

  f.Close();

  // Maybe make some noise.
  if (verbose_)
    std::cout << "DQMStore::save: successfully wrote " << nme 
              << " objects from path '" << path  
              << "' into DQM file '" << filename << "'\n";
}

unsigned int
DQMStore::readDirectory(TFile *file,
                        bool overwrite,
                        const std::string &onlypath,
                        const std::string &prepend,
                        const std::string &curdir,
                        OpenRunDirs stripdirs)
{
  unsigned int ntot = 0;
  unsigned int count = 0;

  if (! file->cd(curdir.c_str()))
    raiseDQMError("DQMStore", "Failed to process directory '%s' while"
                  " reading file '%s'", curdir.c_str(), file->GetName());

  // Figure out current directory name, but strip out the top
  // directory into which we dump everything.
  std::string dirpart = curdir;
  if (dirpart.compare(0, s_monitorDirName.size(), s_monitorDirName) == 0)
  {
    if (dirpart.size() == s_monitorDirName.size())
      dirpart.clear();
    else if (dirpart[s_monitorDirName.size()] == '/')
      dirpart.erase(0, s_monitorDirName.size()+1);
  }

  // See if we are going to skip this directory.
  bool skip = (! onlypath.empty() && ! isSubdirectory(onlypath, dirpart));
  
  if (prepend == s_collateDirName || 
      prepend == s_referenceDirName || 
      stripdirs == StripRunDirs )
  {
    // Remove Run # and RunSummary dirs
    // first look for Run summary, 
    // if that is found and erased, also erase Run dir
    size_t slash = dirpart.find('/');
    size_t pos = dirpart.find("/Run summary");
    if (slash != std::string::npos && pos !=std::string::npos) 
    {
      dirpart.erase(pos,12);
    
      pos = dirpart.find("Run ");
      size_t length = dirpart.find('/',pos+1)-pos+1;
      if (pos !=std::string::npos) 
        dirpart.erase(pos,length);
    }
  } 

  // If we are prepending, add it to the directory name, 
  // and suppress reading of already existing reference histograms
  if (prepend == s_collateDirName || 
      prepend == s_referenceDirName)
  {
    size_t slash = dirpart.find('/');
    // If we are reading reference, skip previous reference.
    if (slash == std::string::npos   // skip if Reference is toplevel folder, i.e. no slash
        && slash+1+s_referenceDirName.size() == dirpart.size()
        && dirpart.compare(slash+1, s_referenceDirName.size(), s_referenceDirName) == 0)
      return 0;

    slash = dirpart.find('/');    
    // Skip reading of EventInfo subdirectory.
    if (slash != std::string::npos
        && slash + 10 == dirpart.size()
        && dirpart.compare( slash+1 , 9 , "EventInfo") == 0) {
      if (verbose_)
        std::cout << "DQMStore::readDirectory: skipping '" << dirpart << "'\n";
      return 0;
    }

    // Add prefix.
    if (dirpart.empty())
      dirpart = prepend;
    else
      dirpart = prepend + '/' + dirpart;
  }
  else if (! prepend.empty())
  {
    if (dirpart.empty())
      dirpart = prepend;
    else
      dirpart = prepend + '/' + dirpart;
  }

  // Loop over the contents of this directory in the file.
  // Post-pone string object handling to happen after other
  // objects have been read in so we are guaranteed to have
  // histograms by the time we read in quality tests and tags.
  TKey *key;
  TIter next (gDirectory->GetListOfKeys());
  std::list<TObject *> delayed;
  while ((key = (TKey *) next()))
  {
    std::auto_ptr<TObject> obj(key->ReadObj());
    if (dynamic_cast<TDirectory *>(obj.get()))
    {
      std::string subdir;
      subdir.reserve(curdir.size() + strlen(obj->GetName()) + 2);
      subdir += curdir;
      if (! curdir.empty())
        subdir += '/';
      subdir += obj->GetName();

      ntot += readDirectory(file, overwrite, onlypath, prepend, subdir, stripdirs);
    }
    else if (skip)
      ;
    else if (dynamic_cast<TObjString *>(obj.get()))
    {
      delayed.push_back(obj.release());
    }
    else
    {
      if (verbose_ > 2)
        std::cout << "DQMStore: reading object '" << obj->GetName()
                  << "' of type '" << obj->IsA()->GetName()
                  << "' from '" << file->GetName()
                  << "' into '" << dirpart << "'\n";

      makeDirectory(dirpart);
      if (extract(obj.get(), dirpart, overwrite))
        ++count;
    }
  }

  while (! delayed.empty())
  {
    if (verbose_ > 2)
      std::cout << "DQMStore: reading object '" << delayed.front()->GetName()
                << "' of type '" << delayed.front()->IsA()->GetName()
                << "' from '" << file->GetName()
                << "' into '" << dirpart << "'\n";

    makeDirectory(dirpart);
    if (extract(delayed.front(), dirpart, overwrite))
      ++count;

    delete delayed.front();
    delayed.pop_front();
  }

  if (verbose_ > 1)
    std::cout << "DQMStore: read " << count << '/' << ntot
              << " objects from directory '" << dirpart << "'\n";

  return ntot + count;
}

bool
DQMStore::open(const std::string &filename,
               bool overwrite /* = false */,
               const std::string &onlypath /* ="" */,
               const std::string &prepend /* ="" */, 
               OpenRunDirs stripdirs /* =KeepRunDirs */, 
               bool fileMustExist /* =true */)
{
  return readFile(filename,overwrite,onlypath,prepend,stripdirs,fileMustExist);
}

bool 
DQMStore::load(const std::string &filename,
               OpenRunDirs stripdirs /* =StripRunDirs */, 
               bool fileMustExist /* =true */)
{
  bool overwrite = true;
  if (collateHistograms_) overwrite = false;
  if (verbose_) 
  {
    std::cout << "DQMStore::load: reading from file '" << filename << "'\n";
    if (collateHistograms_)
      std::cout << "DQMStore::load: in collate mode   " << "\n";
    else
      std::cout << "DQMStore::load: in overwrite mode   " << "\n";
  }
    
  return readFile(filename,overwrite,"","",stripdirs,fileMustExist);
     
}

bool
DQMStore::readFile(const std::string &filename,
                   bool overwrite /* = false */,
                   const std::string &onlypath /* ="" */,
                   const std::string &prepend /* ="" */,
                   OpenRunDirs stripdirs /* =StripRunDirs */,
                   bool fileMustExist /* =true */)
{
  
  if (verbose_)
    std::cout << "DQMStore::readFile: reading from file '" << filename << "'\n";

  std::auto_ptr<TFile> f;

  try 
  {
    f.reset(TFile::Open(filename.c_str()));
    if (! f.get() || f->IsZombie())
      raiseDQMError("DQMStore", "Failed to open file '%s'", filename.c_str());
  }
  catch (std::exception &)
  {
    if (fileMustExist)
      throw;
    else
    {  
    if (verbose_)
      std::cout << "DQMStore::readFile: file '" << filename << "' does not exist, continuing\n";
    return false;
    }
  }

  unsigned n = readDirectory(f.get(), overwrite, onlypath, prepend, "", stripdirs);
  f->Close();

  MEMap::iterator mi = data_.begin();
  MEMap::iterator me = data_.end();
  for ( ; mi != me; ++mi)
    const_cast<MonitorElement &>(*mi).updateQReportStats();

  if (verbose_)
  {
    std::cout << "DQMStore::open: successfully read " << n
              << " objects from file '" << filename << "'";
    if (! onlypath.empty())
      std::cout << " from directory '" << onlypath << "'";
    if (! prepend.empty())
      std::cout << " into directory '" << prepend << "'";
    std::cout << std::endl;
  }
  return true;
}

void
DQMStore::rmdir(const std::string &path)
{
  std::string clean;
  const std::string *cleaned = 0;
  cleanTrailingSlashes(path, clean, cleaned);
  MonitorElement proto(cleaned, std::string());

  MEMap::iterator e = data_.end();
  MEMap::iterator i = data_.lower_bound(proto);
  while (i != e && isSubdirectory(*cleaned, *i->data_.dirname))
    data_.erase(i++);

  std::set<std::string>::iterator de = dirs_.end();
  std::set<std::string>::iterator di = dirs_.lower_bound(*cleaned);
  while (di != de && isSubdirectory(*cleaned, *di))
    dirs_.erase(di++);
}

void
DQMStore::removeContents(const std::string &dir)
{
  MonitorElement proto(&dir, std::string());
  MEMap::iterator e = data_.end();
  MEMap::iterator i = data_.lower_bound(proto);
  while (i != e && isSubdirectory(dir, *i->data_.dirname))
    if (dir == *i->data_.dirname)
      data_.erase(i++);
    else
      ++i;
}

void
DQMStore::removeContents(void)
{
  removeContents(pwd_);
}

void
DQMStore::removeElement(const std::string &name)
{
  removeElement(pwd_, name);
}

void
DQMStore::removeElement(const std::string &dir, const std::string &name, bool warning /* = true */)
{
  MonitorElement proto(&dir, name);
  MEMap::iterator pos = data_.find(proto);
  if (pos == data_.end() && warning)
    std::cout << "DQMStore: WARNING: attempt to remove non-existent"
              << " monitor element '" << name << "' in '" << dir << "'\n";
  else
    data_.erase(pos);
}

QCriterion *
DQMStore::getQCriterion(const std::string &qtname) const
{
  QCMap::const_iterator i = qtests_.find(qtname);
  QCMap::const_iterator e = qtests_.end();
  return (i == e ? 0 : i->second);
}

QCriterion *
DQMStore::createQTest(const std::string &algoname, const std::string &qtname)
{
  if (qtests_.count(qtname))
    raiseDQMError("DQMStore", "Attempt to create duplicate quality test '%s'",
                  qtname.c_str());

  QAMap::iterator i = qalgos_.find(algoname);
  if (i == qalgos_.end())
    raiseDQMError("DQMStore", "Cannot create a quality test using unknown"
                  " algorithm '%s'", algoname.c_str());

  QCriterion *qc = i->second(qtname);
  qc->setVerbose(verboseQT_);

  qtests_[qtname] = qc;
  return qc;
}

void
DQMStore::useQTest(const std::string &dir, const std::string &qtname)
{
  // Clean the path
  std::string clean;
  const std::string *cleaned = 0;
  cleanTrailingSlashes(dir, clean, cleaned);

  // Validate the path.
  if (cleaned->find_first_not_of(s_safe) != std::string::npos)
    raiseDQMError("DQMStore", "Monitor element path name '%s'"
                  " uses unacceptable characters", cleaned->c_str());

  // Redirect to the pattern match version.
  useQTestByMatch(*cleaned + "/*", qtname);
}

int 
DQMStore::useQTestByMatch(const std::string &pattern, const std::string &qtname)
{
  QCriterion *qc = getQCriterion(qtname);
  if (! qc)
    raiseDQMError("DQMStore", "Cannot apply non-existent quality test '%s'",
                  qtname.c_str());

  fastmatch * fm = new fastmatch( pattern );

  // Record the test for future reference.
  QTestSpec qts(fm, qc);
  qtestspecs_.push_back(qts);

  // Apply the quality test.
  MEMap::iterator mi = data_.begin();
  MEMap::iterator me = data_.end();
  std::string path;
  int cases = 0;
  for ( ; mi != me; ++mi)
  {
    path.clear();
    mergePath(path, *mi->data_.dirname, mi->data_.objname);
    if (fm->match(path))
    {
      ++cases;
      const_cast<MonitorElement &>(*mi).addQReport(qts.second);
    }
  }

  //return the number of matched cases
  return cases;
}
void
DQMStore::runQTests(void)
{

  if (verbose_ > 0)
    std::cout << "DQMStore: running runQTests() with reset = "
              << ( reset_ ? "true" : "false" ) << std::endl;

  // Apply quality tests to each monitor element, skipping references.
  MEMap::iterator mi = data_.begin();
  MEMap::iterator me = data_.end();
  for ( ; mi != me; ++mi)
    if (! isSubdirectory(s_referenceDirName, *mi->data_.dirname))
      const_cast<MonitorElement &>(*mi).runQTests();

  reset_ = false;
}

int
DQMStore::getStatus(const std::string &path /* = "" */) const
{
  std::string clean;
  const std::string *cleaned = 0;
  cleanTrailingSlashes(path, clean, cleaned);

  int status = dqm::qstatus::STATUS_OK;
  MEMap::const_iterator mi = data_.begin();
  MEMap::const_iterator me = data_.end();
  for ( ; mi != me; ++mi)
  {
    if (! cleaned->empty() && ! isSubdirectory(*cleaned, *mi->data_.dirname))
      continue;

    if (mi->hasError())
      return dqm::qstatus::ERROR;
    else if (mi->hasWarning())
      status = dqm::qstatus::WARNING;
    else if (status < dqm::qstatus::WARNING
             && mi->hasOtherReport())
      status = dqm::qstatus::OTHER;
  }
  return status;
}

void
DQMStore::softReset(MonitorElement *me)
{
  if (me)
    me->softReset();
}

// reverts action of softReset
void
DQMStore::disableSoftReset(MonitorElement *me)
{
  if (me)
    me->disableSoftReset();
}

void
DQMStore::setAccumulate(MonitorElement *me, bool flag)
{
  if (me)
    me->setAccumulate(flag);
}

void
DQMStore::showDirStructure(void) const
{
  std::vector<std::string> contents;
  getContents(contents);

  std::cout << " ------------------------------------------------------------\n"
            << "                    Directory structure:                     \n"
            << " ------------------------------------------------------------\n";

  std::copy(contents.begin(), contents.end(),
            std::ostream_iterator<std::string>(std::cout, "\n"));

  std::cout << " ------------------------------------------------------------\n";
}

// check if the monitor element is in auto-collation folder
bool
DQMStore::isCollateME(MonitorElement *me) const
{ return me && isSubdirectory(s_collateDirName, *me->data_.dirname); }