JSUPPORT::JMultipleFileSampler< T, JSampler_t > Struct Template Reference

Auxiliary class to sample from a list of files. More...

#include <JMultipleFileSampler.hh>

Inheritance diagram for JSUPPORT::JMultipleFileSampler< T, JSampler_t >:

Public Types
typedef JSampler_t< T >	sampler_type
typedef JObjectIterator< T >::pointer_type	pointer_type

Public Member Functions
	JMultipleFileSampler (const sampler_type &sampler=sampler_type())
	Constructor. More...
const JMultipleFileScanner< T > *const	operator-> () const
	Smart pointer operator. More...
JMultipleFileScanner< T > *	operator-> ()
	Smart pointer operator. More...
virtual bool	hasNext () override
	Check availability of next element. More...
virtual const pointer_type &	next () override
	Get next element. More...
const JSampler_t< T > &	getSampler () const
	Get sampler. More...
JSampler_t< T > &	getSampler ()
	Get sampler. More...
virtual skip_type	skip (const skip_type ns)
	Skip items. More...

Protected Attributes
JMultipleFileScanner< T >	scanner
JRewindableObjectIterator< T > &	in
JSampler_t< T >	sampler
JPointer< T >	ps
bool	has_next

Detailed Description

template<class T, template< class > class JSampler_t = JSampler>
struct JSUPPORT::JMultipleFileSampler< T, JSampler_t >

Auxiliary class to sample from a list of files.

Definition at line 55 of file JMultipleFileSampler.hh.

Member Typedef Documentation

sampler_type

template<class T , template< class > class JSampler_t = JSampler>

typedef JSampler_t<T> JSUPPORT::JMultipleFileSampler< T, JSampler_t >::sampler_type

Definition at line 60 of file JMultipleFileSampler.hh.

pointer_type

template<class T , template< class > class JSampler_t = JSampler>

typedef JObjectIterator<T>::pointer_type JLANG::JObjectSampler< T, JSampler_t >::pointer_type

inherited

Definition at line 45 of file JObjectSampler.hh.

Constructor & Destructor Documentation

JMultipleFileSampler()

template<class T , template< class > class JSampler_t = JSampler>

JSUPPORT::JMultipleFileSampler< T, JSampler_t >::JMultipleFileSampler ( const sampler_type &  sampler = sampler_type() )

inline

Constructor.

Parameters

sampler

sampler

Definition at line 68 of file JMultipleFileSampler.hh.

                                                                       :
      JMultipleFileSampler_t<T>(),
      JObjectSampler<T, JSampler_t>(this->scanner, sampler)
    {}

Member Function Documentation

operator->() [1/2]

template<class T >

const JMultipleFileScanner<T>* const JSUPPORT::JMultipleFileSampler_t< T >::operator-> ( ) const

inlineinherited

Smart pointer operator.

Returns

pointer to scanner

Definition at line 31 of file JMultipleFileSampler.hh.

    {
      return &scanner;
    }

operator->() [2/2]

template<class T >

JMultipleFileScanner<T>* JSUPPORT::JMultipleFileSampler_t< T >::operator-> ( )

inlineinherited

Smart pointer operator.

Returns

pointer to scanner

Definition at line 41 of file JMultipleFileSampler.hh.

    {
      return &scanner;
    }

hasNext()

template<class T , template< class > class JSampler_t = JSampler>

virtual bool JLANG::JObjectSampler< T, JSampler_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 78 of file JObjectSampler.hh.

    {
      while (!has_next) {
 
        if (!in.hasNext()) {
          in.rewind();
        }
 
        if (in.hasNext()) {
 
          ps.set(in.next());
          
          skip_type ns = sampler(*ps);
 
          if (ns == 0) {
 
            has_next = true;
 
          } else {
 
            while ((ns -= in.skip(ns)) != 0) {
              in.rewind();
            }
          }
 
        } else {
 
          // nothing to sample
          
          break;
        }
      }
 
      return has_next;
    }

next()

template<class T , template< class > class JSampler_t = JSampler>

virtual const pointer_type& JLANG::JObjectSampler< T, JSampler_t >::next ( )

inlineoverridevirtualinherited

Get next element.

Returns

pointer to element

Implements JLANG::JObjectIterator< T >.

Definition at line 120 of file JObjectSampler.hh.

    {
      if (!has_next) {
        ps.reset(NULL);
      }
 
      has_next = false;
      
      return ps;
    }

getSampler() [1/2]

template<class T , template< class > class JSampler_t = JSampler>

const JSampler_t<T>& JLANG::JObjectSampler< T, JSampler_t >::getSampler ( ) const

inlineinherited

Get sampler.

Returns

sampler

Definition at line 137 of file JObjectSampler.hh.

    {
      return sampler;
    }

getSampler() [2/2]

template<class T , template< class > class JSampler_t = JSampler>

JSampler_t<T>& JLANG::JObjectSampler< T, JSampler_t >::getSampler ( )

inlineinherited

Get sampler.

Returns

sampler

Definition at line 148 of file JObjectSampler.hh.

    {
      return sampler;
    }

skip()

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

Reimplemented in JLANG::JSTDObjectIterator< T >, JLANG::JPipe< T >, JLANG::JPipe< JTail_t >, JLANG::JPipe< JHead_t >, and JLANG::JAbstractObjectReader< T >.

Definition at line 90 of file JObjectIterator.hh.

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

Member Data Documentation

scanner

template<class T >

JMultipleFileScanner<T> JSUPPORT::JMultipleFileSampler_t< T >::scanner

protectedinherited

Definition at line 47 of file JMultipleFileSampler.hh.

in

template<class T , template< class > class JSampler_t = JSampler>

JRewindableObjectIterator<T>& JLANG::JObjectSampler< T, JSampler_t >::in

protectedinherited

Definition at line 154 of file JObjectSampler.hh.

sampler

template<class T , template< class > class JSampler_t = JSampler>

JSampler_t<T> JLANG::JObjectSampler< T, JSampler_t >::sampler

protectedinherited

Definition at line 155 of file JObjectSampler.hh.

ps

template<class T , template< class > class JSampler_t = JSampler>

JPointer<T> JLANG::JObjectSampler< T, JSampler_t >::ps

protectedinherited

Definition at line 156 of file JObjectSampler.hh.

has_next

template<class T , template< class > class JSampler_t = JSampler>

bool JLANG::JObjectSampler< T, JSampler_t >::has_next

protectedinherited

Definition at line 157 of file JObjectSampler.hh.

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The documentation for this struct was generated from the following file:

• JMultipleFileSampler.hh