In This Package:

RootOutputStream Class Reference

A generalized stream of output data. More...

#include <RootOutputStream.h>

Inheritance diagram for RootOutputStream:

[legend]Collaboration diagram for RootOutputStream:[legend]List of all members.

Public Member Functions
	RootOutputStream (void *addr, const std::string &classname, const std::string &treepath="", const std::string &branchname="")
	Create a root output stream with the address of a pointer to an object.
virtual	~RootOutputStream ()
std::string	path ()
	RootIOStream interface.
bool	write ()
	Write current state of addr to disk.
bool	close ()
	Write tree to file and close file.
bool	newFile (const std::string &filename, const std::string &treepath="", const std::string &branchname="")
	Start a new output file.
int	entries ()
	Return the number of entries in the output stream.
int	fileEntries ()
	Return the number of entries in the current output file.
RootIOBaseObject *	obj ()
	Return the pointer that m_addr points to assuming it points to a RootIOBaseObject.
Protected Attributes
void *	m_addr
Private Member Functions
bool	handle_user_data ()
Private Attributes
TFile *	m_file
TTree *	m_tree
TDirectory *	m_dir
std::string	m_classname
std::string	m_treepath
std::string	m_branchname
int	m_entries
Dyb::MsgStreamMember	log

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Detailed Description

A generalized stream of output data.

This allows writing data out to file. The output stream can be broken up in to multiple files.

bv@bnl.gov Sun Jun 29 10:13:17 2008

Definition at line 26 of file RootOutputStream.h.

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Constructor & Destructor Documentation

RootOutputStream::RootOutputStream	(	void *	addr,
		const std::string &	classname,
		const std::string &	treepath = "",
		const std::string &	branchname = ""
	)

Create a root output stream with the address of a pointer to an object.

Optionally specify the treepath and branchname

RootOutputStream::~RootOutputStream

(

)

[virtual]

Definition at line 39 of file RootOutputStream.cc.

{
    this->close();
}

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Member Function Documentation

string RootOutputStream::path

(

)

[virtual]

RootIOStream interface.

Implements RootIOStream.

Definition at line 44 of file RootOutputStream.cc.

{
    return m_treepath;
}

bool RootOutputStream::write

(

)

Write current state of addr to disk.

Definition at line 51 of file RootOutputStream.cc.

{
    if (!m_tree) {
        log << MSG::ERROR << "write(): no tree" 
            << endreq;
        return false;
    }

    int nbytes = m_tree->Fill();
    log << MSG::DEBUG << "Wrote " << nbytes
        << " bytes to entry " << m_entries
        << " of tree " << m_treepath
        << endreq;

    // Debugging #445.
    //TObject* dir = m_file->Get("Event/Sim");
    //if (dir) dir->ls();

    ++m_entries;
    return nbytes > 0;    
}

bool RootOutputStream::close

(

)

Write tree to file and close file.

Definition at line 83 of file RootOutputStream.cc.

{
    if (!m_file) return true;
    if (!m_tree) return true;
    
    log << MSG::DEBUG << "Closing file " << m_file->GetName() << endreq;

    m_dir->cd();
    m_tree->Write(NULL,TObject::kOverwrite); // for kOverwrite see #445
    RootOutputFileManager::get().close_file(m_file);
    m_file = 0;
    m_tree = 0;
    m_dir = 0;
    return true;
}

bool RootOutputStream::newFile	(	const std::string &	filename,
		const std::string &	treepath = "",
		const std::string &	branchname = ""
	)

Start a new output file.

int RootOutputStream::entries

(

)

Return the number of entries in the output stream.

Definition at line 73 of file RootOutputStream.cc.

{
    return m_entries;
}

int RootOutputStream::fileEntries

(

)

Return the number of entries in the current output file.

Definition at line 78 of file RootOutputStream.cc.

{
    return m_tree->GetEntries();
}

bool RootOutputStream::handle_user_data

(

)

[private]

Definition at line 160 of file RootOutputStream.cc.

{
    RootIOUserData ud;
    RootIOUserData::ProxyCollection& proxies = ud.output(m_treepath);
    RootIOUserData::ProxyCollection::iterator it, done = proxies.end();

    log << MSG::DEBUG << "newFile(): handling user data with " 
        << proxies.size() << " proxies at treepath=" << m_treepath
        << " (one of " << ud.outputMap().size() << ")"
        << endreq;

    bool ret = true;
    
    for (it = proxies.begin(); it != done; ++it) {
        RootIOUserDataProxy* udp = it->second;
        bool ok = udp->branch(m_tree);
        if (ok) {
            log << MSG::DEBUG << "newFile(): initiated user data type: "
                << udp->cppType() << " name: " << udp->varName() << endreq;
        }
        else {
            log << MSG::ERROR << "newFile(): failed to initiate user data type: "
                << udp->cppType() << " name: " << udp->varName() << endreq;
            ret = false;
        }
    }
    return ret;
}

RootIOBaseObject * RootIOStream::obj

(

)

[inherited]

Return the pointer that m_addr points to assuming it points to a RootIOBaseObject.

Definition at line 13 of file RootIOStream.cc.

{
    return *(RootIOBaseObject**)m_addr;
}

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Member Data Documentation

TFile* RootOutputStream::m_file [private]

Definition at line 28 of file RootOutputStream.h.

TTree* RootOutputStream::m_tree [private]

Definition at line 29 of file RootOutputStream.h.

TDirectory* RootOutputStream::m_dir [private]

Definition at line 30 of file RootOutputStream.h.

std::string RootOutputStream::m_classname [private]

Definition at line 32 of file RootOutputStream.h.

std::string RootOutputStream::m_treepath [private]

Definition at line 32 of file RootOutputStream.h.

std::string RootOutputStream::m_branchname [private]

Definition at line 32 of file RootOutputStream.h.

int RootOutputStream::m_entries [private]

Definition at line 34 of file RootOutputStream.h.

Dyb::MsgStreamMember RootOutputStream::log [private]

Definition at line 36 of file RootOutputStream.h.

void* RootIOStream::m_addr [protected, inherited]

Definition at line 10 of file RootIOStream.h.

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The documentation for this class was generated from the following files:

• /home/dayabay/installs/trunk_2011_04_11_opt/NuWa-trunk/dybgaudi/RootIO/RootIOSvc/RootIOSvc/RootOutputStream.h
• /home/dayabay/installs/trunk_2011_04_11_opt/NuWa-trunk/dybgaudi/RootIO/RootIOSvc/src/lib/RootOutputStream.cc

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