HepMC3 event record library
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GenEvent I/O parsing and serialization for root files based on root TTree.
If HepMC was compiled with path to ROOT available, this class can be used for root file I/O in the same manner as with HepMC::ReaderAscii class.
Definition at line 34 of file ReaderRootTree.h.
#include <ReaderRootTree.h>
Public Member Functions | |
ReaderRootTree (const std::string &filename) | |
Default constructor. | |
ReaderRootTree (const std::string &filename, const std::string &treename, const std::string &branchname) | |
Constructor with tree name. | |
bool | read_event (GenEvent &evt) |
Read event from file. | |
void | close () |
Close file. | |
bool | failed () |
Get file error state. | |
shared_ptr< GenRunInfo > | run_info () const |
Get the global GenRunInfo object. | |
Data Fields | |
TTree * | m_tree |
Tree handler. Public to allow simple access, e.g. custom branches. | |
Protected Member Functions | |
void | set_run_info (shared_ptr< GenRunInfo > run) |
Set the global GenRunInfo object. | |
Private Member Functions | |
bool | init () |
init routine | |
Private Attributes | |
TFile * | m_file |
File handler. | |
int | m_events_count |
Events count. Needed to read the tree. | |
GenEventData * | m_event_data |
Pointer to structure that holds event data. | |
GenRunInfoData * | m_run_info_data |
Pointer to structure that holds run info data. | |
std::string | m_tree_name |
Name of TTree. | |
std::string | m_branch_name |
Name of TBranch in TTree. | |
shared_ptr< GenRunInfo > | m_run_info |
The global GenRunInfo object. | |
ReaderRootTree | ( | const std::string & | filename | ) |
Default constructor.
Definition at line 17 of file ReaderRootTree.cc.
References ReaderRootTree::init(), and ReaderRootTree::m_file.
ReaderRootTree | ( | const std::string & | filename, |
const std::string & | treename, | ||
const std::string & | branchname | ||
) |
Constructor with tree name.
Definition at line 25 of file ReaderRootTree.cc.
References ReaderRootTree::init(), and ReaderRootTree::m_file.
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virtual |
Close file.
Implements Reader.
Definition at line 96 of file ReaderRootTree.cc.
References ReaderRootTree::m_file.
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virtual |
Get file error state.
Implements Reader.
Definition at line 101 of file ReaderRootTree.cc.
References ReaderRootTree::m_events_count, ReaderRootTree::m_file, and ReaderRootTree::m_tree.
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private |
init routine
Definition at line 32 of file ReaderRootTree.cc.
References ERROR, ReaderRootTree::m_branch_name, ReaderRootTree::m_event_data, ReaderRootTree::m_file, ReaderRootTree::m_run_info_data, ReaderRootTree::m_tree, ReaderRootTree::m_tree_name, and Reader::set_run_info().
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virtual |
Read event from file.
[out] | evt | Contains parsed event |
Implements Reader.
Definition at line 68 of file ReaderRootTree.cc.
References GenEventData::attribute_id, GenEventData::attribute_name, GenRunInfoData::attribute_name, GenEventData::attribute_string, GenRunInfoData::attribute_string, GenEventData::links1, GenEventData::links2, ReaderRootTree::m_event_data, ReaderRootTree::m_events_count, ReaderRootTree::m_run_info_data, ReaderRootTree::m_tree, GenEventData::particles, GenEvent::read_data(), Reader::run_info(), GenEvent::set_run_info(), GenRunInfoData::tool_description, GenRunInfoData::tool_name, GenRunInfoData::tool_version, GenEventData::vertices, and GenRunInfoData::weight_names.
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inlineinherited |
Get the global GenRunInfo object.
Definition at line 39 of file Reader.h.
References Reader::m_run_info.
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inlineprotectedinherited |
Set the global GenRunInfo object.
Definition at line 46 of file Reader.h.
References Reader::m_run_info.
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private |
Name of TBranch in TTree.
Definition at line 77 of file ReaderRootTree.h.
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private |
Pointer to structure that holds event data.
Definition at line 74 of file ReaderRootTree.h.
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private |
Events count. Needed to read the tree.
Definition at line 73 of file ReaderRootTree.h.
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private |
File handler.
Definition at line 69 of file ReaderRootTree.h.
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privateinherited |
The global GenRunInfo object.
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private |
Pointer to structure that holds run info data.
Definition at line 75 of file ReaderRootTree.h.
TTree* m_tree |
Tree handler. Public to allow simple access, e.g. custom branches.
Definition at line 71 of file ReaderRootTree.h.
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private |
Name of TTree.
Definition at line 76 of file ReaderRootTree.h.