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 ()
	Rewind. More...

virtual bool	setObject (Head &object)
	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 ()
	Check availability of next element. More...

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

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

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

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

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

virtual bool	setObject (T &object)=0
	Set object. 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 getHeader which returns the sum of all Headers.

Definition at line 291 of file JMonteCarloFileSupportkit.hh.

Member Typedef Documentation

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

inherited

Definition at line 202 of file JMultipleFileScanner.hh.

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

inherited

Definition at line 203 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 299 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 312 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 ( )

inlinevirtual

Rewind.

Reimplemented from JSUPPORT::JMultipleFileScanner<>.

Definition at line 324 of file JMonteCarloFileSupportkit.hh.

     {
       do_next = true;
     }

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

inlinevirtual

Set object.

Parameters

object reference to object to be set

Returns: true if set; else false

Definition at line 336 of file JMonteCarloFileSupportkit.hh.

     {
       if (do_next) {
 
         using namespace JLANG;
         using JAANET::JHead;
 
         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.equals(buffer))
               header.add(buffer);
             else
               THROW(JException, "JMultipleFileScanner<Head>::setObject(): inconsistent headers.");
 
             ++count;
           }
           
           scanner.close();
         }
 
         copy(header, object);
 
         if (count != 0 && count != this->size()) {
           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 392 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 251 of file JMultipleFileScanner.hh.

     {
       return this->at(index);
     }

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

inlineinherited

Get counter.

Returns: counter

Definition at line 262 of file JMultipleFileScanner.hh.

     {
       return counter;
     }

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

inlinevirtualinherited

Check availability of next element.

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

Implements JLANG::JObjectIterator< T >.

Definition at line 289 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 ( )

inlinevirtualinherited

Get next element.

Returns: pointer to element

Implements JLANG::JObjectIterator< T >.

Definition at line 337 of file JMultipleFileScanner.hh.

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

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

inlinevirtualinherited

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 351 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 88 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 ( )

inlinevirtualinherited

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 ( )

inlinevirtualinherited

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;
     }