edm::RootDelayedReader Class Reference

#include <RootDelayedReader.h>

Inheritance diagram for edm::RootDelayedReader:

Public Types
typedef input::BranchInfo	BranchInfo
typedef input::BranchMap	BranchMap
typedef input::EntryNumber	EntryNumber
typedef input::BranchMap::const_iterator	iterator

Public Member Functions
	RootDelayedReader (EntryNumber const &entry, boost::shared_ptr< BranchMap const > bMap, boost::shared_ptr< TTreeCache > treeCache, boost::shared_ptr< InputFile > filePtr, FileFormatVersion const &fileFormatVersion)
virtual	~RootDelayedReader ()
Public Member Functions inherited from edm::DelayedReader
std::auto_ptr< EDProduct >	getProduct (BranchKey const &k, EDProductGetter const *ep)
void	mergeReaders (boost::shared_ptr< DelayedReader > other)
virtual	~DelayedReader ()

Private Member Functions
BranchMap const &	branches () const
iterator	branchIter (BranchKey const &k) const
bool	found (iterator const &iter) const
BranchInfo const &	getBranchInfo (iterator const &iter) const
virtual std::auto_ptr< EDProduct >	getProduct_ (BranchKey const &k, EDProductGetter const *ep) const
virtual void	mergeReaders_ (boost::shared_ptr< DelayedReader > other)

Private Attributes
boost::shared_ptr< BranchMap const >	branches_
EntryNumber const	entryNumber_
FileFormatVersion	fileFormatVersion_
boost::shared_ptr< InputFile >	filePtr_
boost::shared_ptr< DelayedReader >	nextReader_
boost::shared_ptr< TTreeCache >	treeCache_

Detailed Description

Definition at line 29 of file RootDelayedReader.h.

Member Typedef Documentation

typedef input::BranchInfo edm::RootDelayedReader::BranchInfo

Definition at line 33 of file RootDelayedReader.h.

typedef input::BranchMap edm::RootDelayedReader::BranchMap

Definition at line 31 of file RootDelayedReader.h.

typedef input::EntryNumber edm::RootDelayedReader::EntryNumber

Definition at line 32 of file RootDelayedReader.h.

typedef input::BranchMap::const_iterator edm::RootDelayedReader::iterator

Definition at line 34 of file RootDelayedReader.h.

Constructor & Destructor Documentation

edm::RootDelayedReader::RootDelayedReader	(	EntryNumber const &	entry,
		boost::shared_ptr< BranchMap const >	bMap,
		boost::shared_ptr< TTreeCache >	treeCache,
		boost::shared_ptr< InputFile >	filePtr,
		FileFormatVersion const &	fileFormatVersion
	)

Definition at line 12 of file RootDelayedReader.cc.

                                                  :
   entryNumber_(entry),
   branches_(bMap),
   treeCache_(treeCache),
   filePtr_(filePtr),
   nextReader_(),
   fileFormatVersion_(fileFormatVersion) {}

edm::RootDelayedReader::~RootDelayedReader ( )

virtual

Definition at line 24 of file RootDelayedReader.cc.

{}

Member Function Documentation

BranchMap const& edm::RootDelayedReader::branches ( ) const

inlineprivate

Definition at line 46 of file RootDelayedReader.h.

References branches_.

Referenced by branchIter(), and found().

{return *branches_;}

iterator edm::RootDelayedReader::branchIter ( BranchKey const &  k ) const

inlineprivate

Definition at line 47 of file RootDelayedReader.h.

References branches().

Referenced by getProduct_().

{return branches().find(k);}

bool edm::RootDelayedReader::found ( iterator const &  iter ) const

inlineprivate

Definition at line 48 of file RootDelayedReader.h.

References branches().

Referenced by getProduct_().

{return iter != branches().end();}

BranchInfo const& edm::RootDelayedReader::getBranchInfo ( iterator const &  iter ) const

inlineprivate

Definition at line 49 of file RootDelayedReader.h.

Referenced by getProduct_().

{return iter->second; }

std::auto_ptr< EDProduct > edm::RootDelayedReader::getProduct_ ( BranchKey const &  k, EDProductGetter const *  ep  ) const

privatevirtual

Implements edm::DelayedReader.

Definition at line 27 of file RootDelayedReader.cc.

References beamvalidation::br, edm::input::BranchInfo::branchDescription_, branchIter(), edm::input::BranchInfo::classCache_, CommonMethods::cp(), entryNumber_, fileFormatVersion_, filePtr_, found(), getBranchInfo(), edm::input::getEntryWithCache(), nextReader_, edm::input::BranchInfo::offsetToEDProduct_, L1TEmulatorMonitor_cff::p, edm::input::BranchInfo::productBranch_, edm::FileFormatVersion::productIDIsInt(), edm::setRefCoreStreamer(), edm::FileFormatVersion::splitProductIDs(), treeCache_, and edm::ConstBranchDescription::wrappedName().

                                                                                    {
    iterator iter = branchIter(k);
    if (!found(iter)) {
      if (nextReader_) {
        return nextReader_->getProduct(k, ep);
      } else {
        return std::auto_ptr<EDProduct>();
      }
    }
    input::BranchInfo const& branchInfo = getBranchInfo(iter);
    TBranch *br = branchInfo.productBranch_;
    if (br == 0) {
      if (nextReader_) {
        return nextReader_->getProduct(k, ep);
      } else {
        return std::auto_ptr<EDProduct>();
      }
    }
    setRefCoreStreamer(ep, !fileFormatVersion_.splitProductIDs(), !fileFormatVersion_.productIDIsInt());
    TClass *cp = branchInfo.classCache_;
    if(0 == cp) {
      branchInfo.classCache_ = gROOT->GetClass(branchInfo.branchDescription_.wrappedName().c_str());
      cp = branchInfo.classCache_;
      TClass *edProductClass = gROOT->GetClass("edm::EDProduct");
      branchInfo.offsetToEDProduct_ = edProductClass->GetBaseClassOffset(edProductClass);
    }
    void *p = cp->New();

    // A union is used to avoid possible copies during the triple cast that would otherwise be needed.
    //std::auto_ptr<EDProduct> edp(static_cast<EDProduct *>(static_cast<void *>(static_cast<unsigned char *>(p) + branchInfo.offsetToEDProduct_)));
    union {
      void* vp;
      unsigned char* ucp;
      EDProduct* edp;
    } pointerUnion;
    pointerUnion.vp = p;
    pointerUnion.ucp += branchInfo.offsetToEDProduct_;
    std::auto_ptr<EDProduct> edp(pointerUnion.edp);

    br->SetAddress(&p);
    input::getEntryWithCache(br, entryNumber_, treeCache_.get(), filePtr_.get());
    setRefCoreStreamer(!fileFormatVersion_.splitProductIDs());
    return edp;
  }

virtual void edm::RootDelayedReader::mergeReaders_ ( boost::shared_ptr< DelayedReader >  other )

inlineprivatevirtual

Reimplemented from edm::DelayedReader.

Definition at line 45 of file RootDelayedReader.h.

References nextReader_.

{nextReader_ = other;}

Member Data Documentation

boost::shared_ptr<BranchMap const> edm::RootDelayedReader::branches_

private

Definition at line 51 of file RootDelayedReader.h.

Referenced by branches().

EntryNumber const edm::RootDelayedReader::entryNumber_

private

Definition at line 50 of file RootDelayedReader.h.

Referenced by getProduct_().

FileFormatVersion edm::RootDelayedReader::fileFormatVersion_

private

Definition at line 57 of file RootDelayedReader.h.

Referenced by getProduct_().

boost::shared_ptr<InputFile> edm::RootDelayedReader::filePtr_

private

Definition at line 55 of file RootDelayedReader.h.

Referenced by getProduct_().

boost::shared_ptr<DelayedReader> edm::RootDelayedReader::nextReader_

private

Definition at line 56 of file RootDelayedReader.h.

Referenced by getProduct_(), and mergeReaders_().

boost::shared_ptr<TTreeCache> edm::RootDelayedReader::treeCache_

private

Definition at line 54 of file RootDelayedReader.h.

Referenced by getProduct_().