Template specialisation of JMultipleFileScanner for Monte Carlo header. More...

#include <JMonteCarloFileSupportkit.hh>

Inheritance diagram for JSUPPORT::JMultipleFileScanner< Head >:

Public Types
typedef JMultipleFileScanner::input_type	input_type

typedef JRewindableObjectIterator < JNullType >::pointer_type	pointer_type

typedef JObjectIterator< T > ::pointer_type	pointer_type

Public Member Functions
	JMultipleFileScanner ()
	Default constructor. More...

	JMultipleFileScanner (const JMultipleFileScanner_t &file_list)
	Copy constructor. More...

virtual void	rewind () override
	Rewind. More...

virtual bool	setObject (Head &object) override
	Set object. More...

const Head &	getHeader ()
	Get Monte Carlo Header. More...

const std::string &	getFilename () const
	Get current file name. More...

counter_type	getCounter () const
	Get counter. More...

virtual bool	hasNext () override
	Check availability of next element. More...

virtual const pointer_type &	next () override
	Get next element. More...

virtual skip_type	skip (const skip_type ns) override
	Skip items. More...

virtual skip_type	skip (const skip_type ns)
	Skip items. More...

virtual bool	hasNext () override
	Check availability of next element. More...

virtual const pointer_type &	next () override
	Get next element. More...

virtual bool	setObject (T &object)=0
	Set object. More...

Static Public Attributes
static bool	merge = false
	Allow merging of files w/o header. More...

Protected Attributes
JFileScanner< JNullType >	scanner

unsigned int	index

counter_type	counter

T	object
	object More...

bool	has_next
	status More...

Private Attributes
bool	do_next

Detailed Description

template<>
class JSUPPORT::JMultipleFileScanner< Head >

Template specialisation of JMultipleFileScanner for Monte Carlo header.

This class re-implements the methods rewind and setObject of the JLANG::JRewindableAbstractObjectIterator interface so that all header objects in the complete file list are read and added. It provides for the method JSUPPORT::getHeader which returns the sum of all headers.

Definition at line 337 of file JMonteCarloFileSupportkit.hh.

Member Typedef Documentation

typedef JMultipleFileScanner ::input_type JSUPPORT::JMultipleFileScanner< JNullType >::input_type

inherited

Definition at line 263 of file JMultipleFileScanner.hh.

typedef JRewindableObjectIterator<JNullType >::pointer_type JSUPPORT::JMultipleFileScanner< JNullType >::pointer_type

inherited

Definition at line 264 of file JMultipleFileScanner.hh.

template<class T>

typedef JObjectIterator<T>::pointer_type JLANG::JAbstractObjectIterator< T >::pointer_type

inherited

Definition at line 39 of file JAbstractObjectIterator.hh.

Constructor & Destructor Documentation

JSUPPORT::JMultipleFileScanner< Head >::JMultipleFileScanner ( )

inline

Default constructor.

Definition at line 345 of file JMonteCarloFileSupportkit.hh.

                            :
       JMultipleFileScanner<>(),
       JRewindableAbstractObjectIterator<Head>(),
       do_next(true)
     {}

JSUPPORT::JMultipleFileScanner< Head >::JMultipleFileScanner ( const JMultipleFileScanner_t & file_list )

inline

Copy constructor.

The file list is copied.

Parameters

file_list JMultipleFileScanner

Definition at line 358 of file JMonteCarloFileSupportkit.hh.

                                                                   :
       JMultipleFileScanner<>(),
       JRewindableAbstractObjectIterator<Head>(),
       do_next(true)
     {
       static_cast<JMultipleFileScanner_t&>(*this) = file_list;
     }

Member Function Documentation

virtual void JSUPPORT::JMultipleFileScanner< Head >::rewind ( )

inlineoverridevirtual

Rewind.

Reimplemented from JSUPPORT::JMultipleFileScanner<>.

Definition at line 370 of file JMonteCarloFileSupportkit.hh.

     {
       do_next = true;
     }

virtual bool JSUPPORT::JMultipleFileScanner< Head >::setObject ( Head & object )

inlineoverridevirtual

Set object.

Parameters

object reference to object to be set

Returns: true if set; else false

Definition at line 382 of file JMonteCarloFileSupportkit.hh.

     {
       if (do_next) {
 
         using namespace JLANG;
 
         JHead header;
 
         do_next = false;
 
         unsigned int count = 0;
 
         JFileScanner<Head> scanner;
 
         for (const_iterator i = this->begin(); i != this->end(); ++i) {
           
           scanner.open(i->c_str());
 
           if (scanner.hasNext()) {
 
             const JHead buffer = *scanner.next();
 
             if      (count == 0)
               header  =  buffer;
             else if (header.match(buffer))
               header.add(buffer);
             else
               THROW(JException, "JMultipleFileScanner<Head>::setObject(): inconsistent headers.");
 
             ++count;
           }
           
           scanner.close();
         }
 
         copy(header, object);
 
         if (count != 0 && count != this->size()) {
           if (!merge) {
             THROW(JException, "JMultipleFileScanner<Head>::setObject(): missing header(s): " << count << " != " << this->size());
           }
         }
 
         return count != 0;
 
       } else {
 
         return false;
       }
     }

const Head& JSUPPORT::JMultipleFileScanner< Head >::getHeader ( )

inline

Get Monte Carlo Header.

Returns: header

Definition at line 439 of file JMonteCarloFileSupportkit.hh.

     {
       const Head* p = NULL;
 
       if (!this->hasNext() || (p = this->next()) == NULL) {
         throw JNullPointerException("JMultipleFileScanner<Head>::getHeader(): Missing Header.");
       }
 
       rewind();
 
       return *p;
     }

const std::string& JSUPPORT::JMultipleFileScanner< JNullType >::getFilename ( ) const

inlineinherited

Get current file name.

Note that this method should only be called when method hasNext() returns true.

Returns: file name

Definition at line 325 of file JMultipleFileScanner.hh.

     {
       return this->at(index);
     }

counter_type JSUPPORT::JMultipleFileScanner< JNullType >::getCounter ( ) const

inlineinherited

Get counter.

Returns: counter

Definition at line 336 of file JMultipleFileScanner.hh.

     {
       return counter;
     }

virtual bool JSUPPORT::JMultipleFileScanner< JNullType >::hasNext ( )

inlineoverridevirtualinherited

Check availability of next element.

Returns: true if the iteration has more elements; else false

Implements JLANG::JObjectIterator< T >.

Definition at line 363 of file JMultipleFileScanner.hh.

     {
       if (is_valid()) {
 
         if (counter < getUpperLimit() && index != this->size()) {
 
           // first time around
 
           if (!scanner.is_open()) {
             scanner.open(getFilename().c_str());
           }
           
           if (counter < getLowerLimit()) {
             counter += scanner.skip(getLowerLimit() - counter);
           }     
 
           if (!scanner.hasNext()) {
             
             scanner.close();
             
             ++index;
             
             return hasNext();
           }
 
           return true;
 
         } else {
 
           // last time around
 
           if (scanner.is_open()) {
             scanner.close();
           }
 
           scanner.reset();
         }
       }
 
       return false;
     }

virtual const pointer_type& JSUPPORT::JMultipleFileScanner< JNullType >::next ( )

inlineoverridevirtualinherited

Get next element.

Returns: pointer to element

Implements JLANG::JObjectIterator< T >.

Definition at line 411 of file JMultipleFileScanner.hh.

     {
       ++counter;
 
       return scanner.next();
     }

virtual skip_type JSUPPORT::JMultipleFileScanner< JNullType >::skip ( const skip_type ns )

inlineoverridevirtualinherited

Skip items.

Parameters

ns	number of items to skip

Returns: number of items skipped

Reimplemented in JSUPPORT::JMultipleFileScanner< JTypeList< JHead_t, JTail_t > >.

Definition at line 425 of file JMultipleFileScanner.hh.

     {
       skip_type i = 0;
 
       while (this->hasNext() && i != ns) {
         i += scanner.skip(ns - i);
       }
 
       counter += i;
 
       return i;
     }

template<class T>

virtual skip_type JLANG::JObjectIterator< T >::skip ( const skip_type ns )

inlinevirtualinherited

Skip items.

Parameters

ns	number of items to skip

Returns: number of items skipped

Definition at line 90 of file JObjectIterator.hh.

     {
       skip_type i = 0;
 
       for ( ; i != ns && hasNext(); ++i) {
         next();
       }
 
       return i;
     }

template<class T>

virtual bool JLANG::JAbstractObjectIterator< T >::hasNext ( )

inlineoverridevirtualinherited

Check availability of next element.

Returns: true if the iteration has more elements; else false

Implements JLANG::JObjectIterator< T >.

Definition at line 56 of file JAbstractObjectIterator.hh.

     {
       if (!has_next) {
         has_next = this->setObject(object);
       }
 
       return has_next;
     }

template<class T>

virtual const pointer_type& JLANG::JAbstractObjectIterator< T >::next ( )

inlineoverridevirtualinherited

Get next element.

Returns: pointer to element

Implements JLANG::JObjectIterator< T >.

Definition at line 71 of file JAbstractObjectIterator.hh.

     {
       if (has_next)
         ps.reset(&this->object);
       else
         ps.reset(NULL);
 
       has_next = false;
       
       return ps;
     }