#include <ScannerHelpers.h>

Public Member Functions
bool	addExpression (const char *expr)
bool	addExtraCut (const char *cut)
	Add one extra cut that can be evaluated separately (as if it was an expression)
void	clearCut ()
	Clear the default cut.
void	clearExpressions ()
	Clear all the expressions.
void	clearExtraCuts ()
	Clear all extra cuts ;.
double	eval (const void *obj, size_t iexpr=0) const
void	fill1D (const void obj, TH1 hist) const
void	fill2D (const void obj, TH2 hist2d) const
void	fillGraph (const void obj, TGraph graph) const
void	fillProf (const void obj, TProfile prof) const
size_t	numberOfExpressions () const
	Number of valid expressions.
size_t	numberOfExtraCuts () const
	Number of extra cuts.
void	print (const void *obj) const
	ScannerBase (const Reflex::Type &objType)
	Constructor taking as argument the type of the individual object passed to the scanner.
	ScannerBase ()
	Empty constructor, necessary for Reflex, DO NOT USE.
bool	setCut (const char *cut)
	Set the default cut that is applied to the events.
void	setIgnoreExceptions (bool ignoreThem)
bool	test (const void *obj, size_t icut=0) const
Private Attributes
std::vector < reco::parser::SelectorPtr >	cuts_
	The first one is the default cut, the others are the extra ones.
std::vector < reco::parser::ExpressionPtr >	exprs_
bool	ignoreExceptions_
	See setIgnoreExceptions to find out what this means.
Reflex::Type	objType_

Detailed Description

Class helper::ScannerBase: tool to print or histogram proprieties of an object using Reflex, The class is generic, but each instance is restricted to the Reflex type of the objects to inspect, fixed at construction time.

Definition at line 45 of file ScannerHelpers.h.

Constructor & Destructor Documentation

helper::ScannerBase::ScannerBase ( ) [inline]

Empty constructor, necessary for Reflex, DO NOT USE.

Definition at line 48 of file ScannerHelpers.h.

{}

helper::ScannerBase::ScannerBase ( const Reflex::Type & objType ) [inline]

Constructor taking as argument the type of the individual object passed to the scanner.

Definition at line 50 of file ScannerHelpers.h.

: objType_(objType), cuts_(1), ignoreExceptions_(false) {}

Member Function Documentation

bool helper::ScannerBase::addExpression ( const char * expr )

Add an expression to be evaluated on the objects Returns false if the parsing failed

Definition at line 68 of file ScannerHelpers.cc.

References ExpressReco_HICollisions_FallBack::cerr, helper::Parser::makeExpression(), and convertSQLiteXML::ok.

Referenced by fwlite::Scanner< Collection >::draw(), fwlite::Scanner< Collection >::draw2D(), fwlite::Scanner< Collection >::drawGraph(), fwlite::Scanner< Collection >::drawProf(), fwlite::Scanner< Collection >::fillDataSet(), and fwlite::Scanner< Collection >::scan().

                                                 {
    bool ok = true;
    exprs_.push_back(helper::Parser::makeExpression(expr,objType_));
    if (exprs_.back().get() == 0) {
        std::cerr << "Failed to parse expression " << expr << std::endl;
        exprs_.pop_back();
        ok = false;
    }
    return ok;
}

bool helper::ScannerBase::addExtraCut ( const char * cut )

Add one extra cut that can be evaluated separately (as if it was an expression)

Definition at line 102 of file ScannerHelpers.cc.

References ExpressReco_HICollisions_FallBack::cerr, helper::Parser::makeSelector(), and convertSQLiteXML::ok.

Referenced by fwlite::Scanner< Collection >::fillDataSet().

                                              {
    bool ok = true;
    cuts_.push_back(helper::Parser::makeSelector(cut,objType_));
    if (!cuts_.back().get()) {
        std::cerr << "Failed to add cut \"" << cut << "\"" << std::endl;
        ok = false;
        cuts_.pop_back();
    }
    return ok;
}

void helper::ScannerBase::clearCut ( )

Clear the default cut.

Definition at line 91 of file ScannerHelpers.cc.

                            {
    cuts_[0].reset();
}

void helper::ScannerBase::clearExpressions ( ) [inline]

Clear all the expressions.

Definition at line 56 of file ScannerHelpers.h.

References exprs_.

{ exprs_.clear(); }

void helper::ScannerBase::clearExtraCuts ( )

Clear all extra cuts ;.

Definition at line 96 of file ScannerHelpers.cc.

                                  {
    cuts_.resize(1);
}

double helper::ScannerBase::eval	(	const void *	obj,
		size_t	iexpr = `0`
	)		const

Evaluate one of the expressions set in this scanner Obj must point to an object of the type used to construct this ScannerBase

Definition at line 128 of file ScannerHelpers.cc.

References ExpressReco_HICollisions_FallBack::cerr, exception, VarParsing::obj, and relativeConstraints::value.

Referenced by fwlite::Scanner< Collection >::draw2D(), and fwlite::Scanner< Collection >::fillDataSet().

                                                           {
    try {
        Reflex::Object obj(objType_, const_cast<void *>(ptr));
        if (exprs_.size() > iexpr)  return exprs_[iexpr]->value(obj);
    } catch (std::exception &ex) {
        if (!ignoreExceptions_) std::cerr << "Caught exception " << ex.what() << std::endl;
    }
    return 0;
}

void helper::ScannerBase::fill1D	(	const void *	obj,
		TH1 *	hist
	)		const

Fill the histogram with the first expression evaluated on the object, if it passes the default cut Obj must point to an object of the type used to construct this ScannerBase

Definition at line 186 of file ScannerHelpers.cc.

References ExpressReco_HICollisions_FallBack::cerr, exception, and VarParsing::obj.

Referenced by fwlite::Scanner< Collection >::draw().

                                                          {
    Reflex::Object obj(objType_, const_cast<void *>(ptr));
    if ((cuts_[0].get() == 0) || (*cuts_[0])(obj)) {
        try {
            if (!exprs_.empty()) hist->Fill(exprs_[0]->value(obj));
        } catch (std::exception &ex) {
            if (!ignoreExceptions_) std::cerr << "Caught exception " << ex.what() << std::endl;
        }
    }
}

void helper::ScannerBase::fill2D	(	const void *	obj,
		TH2 *	hist2d
	)		const

Fill the histogram with (x,y) equal to the first and second expressions evaluated on the object, if it passes the default cut Obj must point to an object of the type used to construct this ScannerBase

Definition at line 198 of file ScannerHelpers.cc.

References ExpressReco_HICollisions_FallBack::cerr, exception, and VarParsing::obj.

Referenced by fwlite::Scanner< Collection >::draw2D().

                                                          {
    Reflex::Object obj(objType_, const_cast<void *>(ptr));
    if ((cuts_[0].get() == 0) || (*cuts_[0])(obj)) {
        try {
            if (exprs_.size() >= 2) hist->Fill(exprs_[0]->value(obj), exprs_[1]->value(obj));
        } catch (std::exception &ex) {
            if (!ignoreExceptions_) std::cerr << "Caught exception " << ex.what() << std::endl;
        }
    }
}

void helper::ScannerBase::fillGraph	(	const void *	obj,
		TGraph *	graph
	)		const

Fill the graph with (x,y) equal to the first and second expressions evaluated on the object, if it passes the default cut Obj must point to an object of the type used to construct this ScannerBase

Definition at line 210 of file ScannerHelpers.cc.

References ExpressReco_HICollisions_FallBack::cerr, exception, and VarParsing::obj.

Referenced by fwlite::Scanner< Collection >::drawGraph().

                                                                 {
    Reflex::Object obj(objType_, const_cast<void *>(ptr));
    if ((cuts_[0].get() == 0) || (*cuts_[0])(obj)) {
        try {
            if (exprs_.size() >= 2) graph->SetPoint(graph->GetN(), exprs_[0]->value(obj), exprs_[1]->value(obj));
        } catch (std::exception &ex) {
            if (!ignoreExceptions_) std::cerr << "Caught exception " << ex.what() << std::endl;
        }
    }
}

void helper::ScannerBase::fillProf	(	const void *	obj,
		TProfile *	prof
	)		const

Fill the profile histogram with (x,y) equal to the first and second expressions evaluated on the object, if it passes the default cut Obj must point to an object of the type used to construct this ScannerBase

Definition at line 223 of file ScannerHelpers.cc.

References ExpressReco_HICollisions_FallBack::cerr, exception, and VarParsing::obj.

Referenced by fwlite::Scanner< Collection >::drawProf().

                                                                 {
    Reflex::Object obj(objType_, const_cast<void *>(ptr));
    if ((cuts_[0].get() == 0) || (*cuts_[0])(obj)) {
        try {
            if (exprs_.size() >= 2) hist->Fill(exprs_[0]->value(obj), exprs_[1]->value(obj));
        } catch (std::exception &ex) {
            if (!ignoreExceptions_) std::cerr << "Caught exception " << ex.what() << std::endl;
        }
    }
}

size_t helper::ScannerBase::numberOfExpressions ( ) const [inline]

Number of valid expressions.

Definition at line 58 of file ScannerHelpers.h.

References exprs_.

{ return exprs_.size(); }

size_t helper::ScannerBase::numberOfExtraCuts ( ) const [inline]

Number of extra cuts.

Definition at line 69 of file ScannerHelpers.h.

References cuts_.

{ return cuts_.size()-1; }

void helper::ScannerBase::print ( const void * obj ) const

Print out in a single row all the expressions for this object Obj must point to an object of the type used to construct this ScannerBase

Definition at line 139 of file ScannerHelpers.cc.

References ExpressReco_HICollisions_FallBack::cerr, exception, VarParsing::obj, and runTheMatrix::ret.

Referenced by fwlite::Scanner< Collection >::scan().

                                              {
    Reflex::Object obj(objType_, const_cast<void *>(ptr));
    if ((cuts_[0].get() == 0) || (*cuts_[0])(obj)) {
        for (std::vector<reco::parser::ExpressionPtr>::const_iterator it = exprs_.begin(), ed = exprs_.end(); it != ed; ++it) {
            if (ptr == 0 || it->get() == 0) {
                printf(" : %8s", "#ERR");
            } else {  
                try {
                    double val = (*it)->value(obj);
                    // I found no easy ways to enforce a fixed width from printf that works also with leading zeroes or large exponents (e.g. 1e15 or 1e101)
                    // So we have to go the ugly way
                    char buff[255];
                    int len = sprintf(buff," : % 8.6g",val); // this is usually ok, and should be 3+8 chars long
                    if (len == 3+8) {
                        printf(buff);
                    } else {
                        if (strchr(buff,'e')) {
                            printf((len == 3+13 ? " :  % .0e" : " : % .1e"),val);
                        } else {
                            printf("%11.11s",buff);
                        } 
                    } 
                } catch (std::exception &ex) {
                    printf(" : %8s", "EXCEPT"); 
                    if (!ignoreExceptions_) std::cerr << "Caught exception " << ex.what() << std::endl;
                }
            }
        }
        for (std::vector<reco::parser::SelectorPtr>::const_iterator it = cuts_.begin()+1, ed = cuts_.end(); it != ed; ++it) {
            if (ptr == 0 || it->get() == 0) {
                printf(" : %8s", "#ERR");
            } else {  
                try {
                    int ret = (*it)->operator()(obj);
                    printf(" : %8d", ret);
                } catch (std::exception &ex) {
                    printf(" : %8s", "EXCEPT"); 
                    if (!ignoreExceptions_) std::cerr << "Caught exception " << ex.what() << std::endl;
                }
            }
        }
        fflush(stdout);
    }
}

bool helper::ScannerBase::setCut ( const char * cut )

Set the default cut that is applied to the events.

Definition at line 80 of file ScannerHelpers.cc.

References ExpressReco_HICollisions_FallBack::cerr, helper::Parser::makeSelector(), and convertSQLiteXML::ok.

Referenced by fwlite::Scanner< Collection >::count(), fwlite::Scanner< Collection >::draw(), fwlite::Scanner< Collection >::draw2D(), fwlite::Scanner< Collection >::drawGraph(), fwlite::Scanner< Collection >::drawProf(), fwlite::Scanner< Collection >::fillDataSet(), fwlite::ObjectCountSelector< Collection >::ObjectCountSelector(), fwlite::Scanner< Collection >::scan(), and fwlite::ObjectCountSelector< Collection >::setCut().

                                         {
    bool ok = true;
    cuts_[0] = helper::Parser::makeSelector(cut,objType_);
    if (strlen(cut) && !cuts_[0].get()) {
        std::cerr << "Failed to set cut \"" << cut << "\"" << std::endl;
        ok = false;
    }
    return ok;
}

void helper::ScannerBase::setIgnoreExceptions ( bool ignoreThem ) [inline]

If set to true, exceptions are silently ignored: test will return 'false', and 'eval' will return 0. If left to the default value, false, for each exception a printout is done.

Definition at line 101 of file ScannerHelpers.h.

References ignoreExceptions_.

Referenced by fwlite::Scanner< Collection >::count(), fwlite::Scanner< Collection >::draw(), fwlite::Scanner< Collection >::draw2D(), fwlite::Scanner< Collection >::drawGraph(), fwlite::Scanner< Collection >::drawProf(), fwlite::Scanner< Collection >::fillDataSet(), fwlite::ObjectCountSelector< Collection >::ObjectCountSelector(), fwlite::Scanner< Collection >::scan(), and fwlite::ObjectCountSelector< Collection >::setIgnoreExceptions().

{ ignoreExceptions_ = ignoreThem; }

bool helper::ScannerBase::test	(	const void *	obj,
		size_t	icut = `0`
	)		const

Check if the object passes the default cut (icut=0) or any extra cut (icut = 1 .. numberOfExtraCuts) Obj must point to an object of the type used to construct this ScannerBase

Definition at line 115 of file ScannerHelpers.cc.

References ExpressReco_HICollisions_FallBack::cerr, exception, and VarParsing::obj.

Referenced by fwlite::ObjectCountSelector< Collection >::accept(), fwlite::Scanner< Collection >::count(), fwlite::Scanner< Collection >::draw2D(), fwlite::Scanner< Collection >::fillDataSet(), and fwlite::Scanner< Collection >::scan().

                                                          {
    if (icut >= cuts_.size()) return false;
    if (cuts_[icut].get() == 0) return true;
    try {
        Reflex::Object obj(objType_, const_cast<void *>(ptr));
        return (*cuts_[icut])(obj);
    } catch (std::exception &ex) {
        if (!ignoreExceptions_) std::cerr << "Caught exception " << ex.what() << std::endl;
        return false;
    }
}