JLANG::JRewindableObjectReader< T > Struct Template Reference

Auxiliary class for object reading with rewinding. More...

#include <JObjectReader.hh>

Inheritance diagram for JLANG::JRewindableObjectReader< T >:

Public Types
typedef JSharedPointer < JRewindableObjectIterator< T > >	helper_type
typedef JObjectIterator< T > ::pointer_type	pointer_type
typedef JStorage < JRewindableObjectIterator< T > , JNew >	storage_type
typedef JNew < JRewindableObjectIterator< T > >	memory_type

Public Member Functions
	JRewindableObjectReader ()
	Default constructor. More...
virtual JRewindableObjectIterator< T > *	getHelper () const override
	Get helper. More...
virtual bool	hasNext ()=0
	Check availability of next element. More...
virtual const pointer_type &	next ()=0
	Get next element. More...
virtual skip_type	skip (const skip_type ns)
	Skip items. More...
virtual void	rewind ()=0
	Rewind. More...
virtual void	rewind () override
	Rewind. 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...
const JSharedPointer &	getSharedPointer () const
	Get shared pointer. More...
JSharedPointer &	getSharedPointer ()
	Get shared pointer. More...
void	setSharedPointer (const JSharedPointer &object)
	Set shared pointer. More...
virtual void	reset () override
	Reset pointer. More...
void	reset (const JPointer< T > &pointer)
	Reset pointer. More...
void	reset (JRewindableObjectIterator< T > *p)
	Reset pointer. More...
void	set (const JPointer< T > &pointer)
	Set pointer. More...
void	initialise ()
	Initialise counter. More...
void	attach (const JSharedCounter &object)
	Attach this counter to given shared counter object. More...
bool	detach ()
	Detach. More...
const int	getCount ()
	Get count. More...
void	recreate ()
	Recreate object in memory. More...
void	create ()
	Create object in memory. More...
void	create (const unsigned int size)
	Create array of objects in memory. More...
virtual JRewindableObjectIterator< T > *	get () const override
	Get pointer. More...
JRewindableObjectIterator< T > *const &	getReference () const
	Get rereference to internal pointer. More...
JRewindableObjectIterator< T > *&	getReference ()
	Get rereference to internal pointer. More...
virtual bool	equals (const JAbstractPointer &object) const
	Equals. More...
bool	is_valid () const
	Check validity of pointer. More...
JRewindableObjectIterator< T > *	operator-> () const
	Smart pointer operator. More...
	operator JRewindableObjectIterator< T > * () const
	Type conversion operator. More...

Static Public Member Functions
static void	release (JRewindableObjectIterator< T > *p)
	Release memory. More...

Protected Member Functions
void	set (const JSharedPointer &object)
	Set pointer. More...
virtual void	set (JRewindableObjectIterator< T > *p) override
	Set pointer. More...
void	release ()
	Release memory. More...

Protected Attributes
int *	counter
JRewindableObjectIterator< T > *	__p
	pointer to object More...

Detailed Description

template<class T>
struct JLANG::JRewindableObjectReader< T >

Auxiliary class for object reading with rewinding.

This class implements the JAbstractRewindableObjectReader interface.

Definition at line 57 of file JObjectReader.hh.

Member Typedef Documentation

template<class T>

typedef JSharedPointer< JRewindableObjectIterator<T> > JLANG::JRewindableObjectReader< T >::helper_type

Definition at line 63 of file JObjectReader.hh.

template<class T>

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

Definition at line 64 of file JObjectReader.hh.

typedef JStorage<JRewindableObjectIterator< T > , JNew > JLANG::JSharedPointer< JRewindableObjectIterator< T > , JNew >::storage_type

inherited

Definition at line 35 of file JSharedPointer.hh.

typedef JNew <JRewindableObjectIterator< T > > JLANG::JStorage< JRewindableObjectIterator< T > , JNew >::memory_type

inherited

Definition at line 33 of file JStorage.hh.

Constructor & Destructor Documentation

template<class T>

JLANG::JRewindableObjectReader< T >::JRewindableObjectReader ( )

inline

Default constructor.

Definition at line 69 of file JObjectReader.hh.

    {}

Member Function Documentation

template<class T>

virtual JRewindableObjectIterator<T>* JLANG::JRewindableObjectReader< T >::getHelper ( ) const

inlineoverridevirtual

Get helper.

Returns

helper

Implements JLANG::JAbstractRewindableObjectReader< T >.

Definition at line 78 of file JObjectReader.hh.

    {
      return this->get();
    }

template<class T>

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

pure virtualinherited

Check availability of next element.

Returns

true if the iteration has more elements; else false

Implemented in JSUPPORT::JMultipleFileScanner< T >, JSUPPORT::JMultipleFileScanner<>, JSUPPORT::JMultipleFileScanner< JTail_t >, JSUPPORT::JMultipleFileScanner< JHead_t >, JSUPPORT::JMultipleFileScanner< KM3NETDAQ::KM3NETDAQ::JDAQEvent >, JSUPPORT::JMultipleFileScanner< JDAQSummaryslice >, JSUPPORT::JMultipleFileScanner< JTypeList< JDAQEvent, JTypelist_t > >, JLANG::JNullIterator< T >, JSUPPORT::JSingleFileScanner< T >, JSUPPORT::JSingleFileScanner<>, JSUPPORT::JSingleFileScanner< JTail_t >, JSUPPORT::JSingleFileScanner< JHead_t >, JLANG::JObjectMultiplexer< JTypeList< JHead_t, JTail_t >, JBase_t >, JROOT::JRootFileReader< T, false >, JROOT::JMarkerAttributes, JROOT::JLineAttributes, JSUPPORT::JTriggeredFileScanner< JTypelist_t >, JLANG::JObjectSampler< T, JSampler_t >, JLANG::JObjectSampler< JDAQSummaryslice, JRandomSampler >, JLANG::JPipe< T >, JLANG::JSTDObjectIterator< T >, JLANG::JPipe< JTail_t >, JLANG::JPipe< JHead_t >, JROOT::JTreeReaderObjectIterator< T >, JLANG::JObjectMultiplexer< JDerived_t, JBase_t >, JLANG::JObjectMultiplexer< JHead_t, JBase_t >, JLANG::JObjectMultiplexer< JTail_t, JBase_t >, JLANG::JAbstractObjectIterator< T >, JLANG::JAbstractObjectIterator< Head >, JLANG::JAbstractObjectIterator< JTail_t >, JLANG::JAbstractObjectIterator< JHead_t >, JLANG::JAbstractObjectIterator< JTriggerParameters >, JLANG::JAbstractObjectIterator< JPhotonPath >, JLANG::JAbstractObjectReader< T >, JLANG::JConversionIterator< JInput_t, JOutput_t >, JLANG::JAbstractObjectReader< JNullType >, JLANG::JAbstractObjectReader< const T >, JLANG::JAbstractObjectReader< JTail_t >, JLANG::JAbstractObjectReader< JHead_t >, JLANG::JAbstractObjectReader< KM3NETDAQ::KM3NETDAQ::JDAQEvent >, JLANG::JAbstractObjectReader< JDAQSummaryslice >, and JLANG::JAbstractObjectReader< JTypeList< JDAQEvent, JTypelist_t > >.

template<class T>

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

pure virtualinherited

Get next element.

Returns

pointer to element

Implemented in JSUPPORT::JMultipleFileScanner< T >, JSUPPORT::JMultipleFileScanner<>, JSUPPORT::JMultipleFileScanner< JTail_t >, JSUPPORT::JMultipleFileScanner< JHead_t >, JSUPPORT::JMultipleFileScanner< KM3NETDAQ::KM3NETDAQ::JDAQEvent >, JSUPPORT::JMultipleFileScanner< JDAQSummaryslice >, JSUPPORT::JMultipleFileScanner< JTypeList< JDAQEvent, JTypelist_t > >, JLANG::JNullIterator< T >, JSUPPORT::JSingleFileScanner< T >, JSUPPORT::JSingleFileScanner<>, JSUPPORT::JSingleFileScanner< JTail_t >, JSUPPORT::JSingleFileScanner< JHead_t >, JLANG::JObjectMultiplexer< JTypeList< JHead_t, JTail_t >, JBase_t >, JROOT::JRootFileReader< T, false >, JLANG::JObjectSampler< T, JSampler_t >, JLANG::JObjectSampler< JDAQSummaryslice, JRandomSampler >, JROOT::JMarkerAttributes, JLANG::JPipe< T >, JSUPPORT::JTriggeredFileScanner< JTypelist_t >, JLANG::JPipe< JTail_t >, JLANG::JPipe< JHead_t >, JROOT::JLineAttributes, JROOT::JTreeReaderObjectIterator< T >, JLANG::JSTDObjectIterator< T >, JLANG::JObjectMultiplexer< JDerived_t, JBase_t >, JLANG::JObjectMultiplexer< JHead_t, JBase_t >, JLANG::JObjectMultiplexer< JTail_t, JBase_t >, JSUPPORT::JParallelFileScanner< JTypeList< JDAQEvent, JTypelist_t >, JMultipleFileScanner >, JLANG::JAbstractObjectIterator< T >, JLANG::JAbstractObjectIterator< Head >, JLANG::JAbstractObjectIterator< JTail_t >, JLANG::JAbstractObjectIterator< JHead_t >, JLANG::JAbstractObjectIterator< JTriggerParameters >, JLANG::JAbstractObjectIterator< JPhotonPath >, JLANG::JAbstractObjectReader< T >, JLANG::JConversionIterator< JInput_t, JOutput_t >, JLANG::JAbstractObjectReader< JNullType >, JLANG::JAbstractObjectReader< const T >, JLANG::JAbstractObjectReader< JTail_t >, JLANG::JAbstractObjectReader< JHead_t >, JLANG::JAbstractObjectReader< KM3NETDAQ::KM3NETDAQ::JDAQEvent >, JLANG::JAbstractObjectReader< JDAQSummaryslice >, and JLANG::JAbstractObjectReader< JTypeList< JDAQEvent, JTypelist_t > >.

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::JPipe< T >, JLANG::JPipe< JTail_t >, JLANG::JPipe< JHead_t >, JLANG::JSTDObjectIterator< T >, JLANG::JAbstractObjectReader< T >, JLANG::JAbstractObjectReader< JNullType >, JLANG::JAbstractObjectReader< const T >, JLANG::JAbstractObjectReader< JTail_t >, JLANG::JAbstractObjectReader< JHead_t >, JLANG::JAbstractObjectReader< KM3NETDAQ::KM3NETDAQ::JDAQEvent >, JLANG::JAbstractObjectReader< JDAQSummaryslice >, and JLANG::JAbstractObjectReader< JTypeList< JDAQEvent, JTypelist_t > >.

Definition at line 90 of file JObjectIterator.hh.

    {
      skip_type i = 0;

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

      return i;
    }

template<class T>

virtual void JLANG::JRewindable< T >::rewind ( )

pure virtualinherited

Rewind.

Implemented in JSUPPORT::JMultipleFileScanner< JTypeList< JHead_t, JTail_t > >, JSUPPORT::JSingleFileScanner< JTypeList< JHead_t, JTail_t > >, JSUPPORT::JMultipleFileScanner< Head >, JSUPPORT::JMultipleFileScanner< T >, JSUPPORT::JMultipleFileScanner<>, JSUPPORT::JMultipleFileScanner< JTail_t >, JSUPPORT::JMultipleFileScanner< JHead_t >, JSUPPORT::JMultipleFileScanner< KM3NETDAQ::KM3NETDAQ::JDAQEvent >, JSUPPORT::JMultipleFileScanner< JDAQSummaryslice >, JSUPPORT::JMultipleFileScanner< JTypeList< JDAQEvent, JTypelist_t > >, JSUPPORT::JSingleFileScanner< T >, JSUPPORT::JSingleFileScanner<>, JSUPPORT::JSingleFileScanner< JTail_t >, JSUPPORT::JSingleFileScanner< JHead_t >, JROOT::JRootFileReader< T, false >, JLANG::JAbstractRewindableObjectReader< T >, JLANG::JAbstractRewindableObjectReader< const T >, JLANG::JAbstractRewindableObjectReader< JTail_t >, JLANG::JAbstractRewindableObjectReader< JHead_t >, JLANG::JSTDObjectReader< JTypeList< JHead_t, JTail_t > >, JROOT::JMarkerAttributes, JROOT::JLineAttributes, JSUPPORT::JMultipleFileScanner< JTriggerParameters >, JLANG::JSTDObjectIterator< T >, and JROOT::JTreeReaderObjectIterator< T >.

template<class T>

virtual void JLANG::JAbstractRewindableObjectReader< T >::rewind ( )

inlineoverridevirtualinherited

Rewind.

Implements JLANG::JRewindable< T >.

Reimplemented in JLANG::JSTDObjectReader< JTypeList< JHead_t, JTail_t > >.

Definition at line 104 of file JAbstractObjectReader.hh.

    {
      if (this->getHelper() != NULL) {
        this->getHelper()->rewind();
      }
    }

template<class T>

virtual bool JLANG::JAbstractObjectReader< 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 43 of file JAbstractObjectReader.hh.

    {
      return (this->getHelper() != NULL && this->getHelper()->hasNext());
    }

template<class T>

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

inlineoverridevirtualinherited

Get next element.

Returns

pointer to element

Implements JLANG::JObjectIterator< T >.

Definition at line 54 of file JAbstractObjectReader.hh.

    {
      if (this->getHelper() != NULL)
        return this->getHelper()->next();
      else
        return ps;
    }

template<class T>

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

inlineoverridevirtualinherited

Skip items.

Parameters

ns	number of items to skip

Returns

number of items skipped

Reimplemented from JLANG::JObjectIterator< T >.

Definition at line 69 of file JAbstractObjectReader.hh.

    {
      if (this->getHelper() != NULL)
        return this->getHelper()->skip(ns);
      else
        return 0;
    } 

const JSharedPointer& JLANG::JSharedPointer< JRewindableObjectIterator< T > , JNew >::getSharedPointer ( ) const

inlineinherited

Get shared pointer.

Returns

this shared pointer

Definition at line 95 of file JSharedPointer.hh.

    {
      return static_cast<const JSharedPointer&>(*this);
    }

JSharedPointer& JLANG::JSharedPointer< JRewindableObjectIterator< T > , JNew >::getSharedPointer ( )

inlineinherited

Get shared pointer.

Returns

this shared pointer

Definition at line 106 of file JSharedPointer.hh.

    {
      return static_cast<JSharedPointer&>(*this);
    }

void JLANG::JSharedPointer< JRewindableObjectIterator< T > , JNew >::setSharedPointer ( const JSharedPointer< JRewindableObjectIterator< T > > &  object )

inlineinherited

Set shared pointer.

Parameters

object

shared pointer

Definition at line 117 of file JSharedPointer.hh.

    {
      if (this->get() != object.get()) {

        this->reset();

        if (object.is_valid()) {
          this->set(object);
        }
      }
    }

virtual void JLANG::JSharedPointer< JRewindableObjectIterator< T > , JNew >::reset ( )

inlineoverridevirtualinherited

Reset pointer.

The reference counter is decremented by one and the object pointed to previously is deleted when its reference counter is zero.

Reimplemented from JLANG::JStorage< JRewindableObjectIterator< T >, JNew >.

Definition at line 171 of file JSharedPointer.hh.

    {
      if (this->detach()) {
        storage_type::reset();
      }

      pointer_type::reset();
    }

void JLANG::JPointer< JRewindableObjectIterator< T > >::reset ( const JPointer< T > &  pointer )

inlineinherited

Reset pointer.

Parameters

pointer

pointer to object

Definition at line 108 of file JPointer.hh.

    {
      this->reset(pointer.get());
    }

void JLANG::JAbstractPointer< JRewindableObjectIterator< T > >::reset ( JRewindableObjectIterator< T > *  p )

inlineinherited

Reset pointer.

Parameters

p	pointer to object

Definition at line 94 of file JAbstractPointer.hh.

    {
      if (this->get() != p) {

        this->reset();

        if (p != NULL) {
          this->set(p);
        }
      }
    }

void JLANG::JSharedPointer< JRewindableObjectIterator< T > , JNew >::set ( const JSharedPointer< JRewindableObjectIterator< T > > &  object )

inlineprotectedinherited

Set pointer.

The reference counter of the shared object pointed to is incremented by one.

Parameters

object

shared pointer

Definition at line 188 of file JSharedPointer.hh.

    {
      pointer_type::set(object.get());

      this->attach(object);
    }

virtual void JLANG::JSharedPointer< JRewindableObjectIterator< T > , JNew >::set ( JRewindableObjectIterator< T > *  p )

inlineoverrideprotectedvirtualinherited

Set pointer.

The reference counter of the shared object pointed to is initialised to one.

Parameters

p	pointer to derived class object

Reimplemented from JLANG::JPointer< JRewindableObjectIterator< T > >.

Definition at line 202 of file JSharedPointer.hh.

    {
      pointer_type::set(p);

      this->initialise();
    }

void JLANG::JPointer< JRewindableObjectIterator< T > >::set ( const JPointer< T > &  pointer )

inlineinherited

Set pointer.

Parameters

pointer

pointer to object

Definition at line 96 of file JPointer.hh.

    {
      this->set(pointer.get());
    }

void JLANG::JSharedCounter::initialise ( )

inlineinherited

Initialise counter.

Definition at line 33 of file JSharedCounter.hh.

    {
      detach();

      counter = new int(1);
    }

void JLANG::JSharedCounter::attach ( const JSharedCounter &  object )

inlineinherited

Attach this counter to given shared counter object.

Parameters

object

shared counter

Definition at line 46 of file JSharedCounter.hh.

    {
      detach();

      counter = object.counter;

      if (counter != NULL) {
        ++(*counter);
      }
    }

bool JLANG::JSharedCounter::detach ( )

inlineinherited

Detach.

Returns

true if counter at zero; else false

Definition at line 63 of file JSharedCounter.hh.

    {
      if (counter != NULL) {

        if (--(*counter) == 0) {

          delete counter;

          counter = NULL;

          return true;
        }

        counter = NULL;
      }

      return false;
    }

const int JLANG::JSharedCounter::getCount ( )

inlineinherited

Get count.

Returns

count

Definition at line 88 of file JSharedCounter.hh.

    {
      return (counter != NULL ? *counter : 0);
    }

void JLANG::JStorage< JRewindableObjectIterator< T > , JNew >::recreate ( )

inlineinherited

Recreate object in memory.

A new object is created if no memory is allocated yet, else the previously created object is maintained.

Definition at line 57 of file JStorage.hh.

    {
      if (!this->is_valid()) {
        this->set(memory_type::create());
      }
    }

void JLANG::JStorage< JRewindableObjectIterator< T > , JNew >::create ( )

inlineinherited

Create object in memory.

The memory allocated by a previously created object will be released.

Definition at line 69 of file JStorage.hh.

    {
      this->reset(memory_type::create());
    }

void JLANG::JStorage< JRewindableObjectIterator< T > , JNew >::create ( const unsigned int  size )

inlineinherited

Create array of objects in memory.

The memory allocated by previously created objects will be released.

Parameters

size	number of elements

Definition at line 81 of file JStorage.hh.

    {
      this->reset(memory_type::create(size));
    }

void JLANG::JStorage< JRewindableObjectIterator< T > , JNew >::release ( )

inlineprotectedinherited

Release memory.

Definition at line 91 of file JStorage.hh.

    { 
      memory_type::release(this->get());
    }

static void JLANG::JNew< JRewindableObjectIterator< T > >::release ( JRewindableObjectIterator< T > *  p )

inlinestaticinherited

Release memory.

Parameters

p	pointer to data

Definition at line 41 of file JMemory.hh.

    {
      delete p;
    }

virtual JRewindableObjectIterator< T > * JLANG::JPointer< JRewindableObjectIterator< T > >::get ( ) const

inlineoverridevirtualinherited

Get pointer.

Returns

pointer to object

Implements JLANG::JAbstractPointer< JRewindableObjectIterator< T > >.

Definition at line 64 of file JPointer.hh.

    {
      return this->__p;
    }

JRewindableObjectIterator< T > * const& JLANG::JPointer< JRewindableObjectIterator< T > >::getReference ( ) const

inlineinherited

Get rereference to internal pointer.

Returns

reference to internal pointer

Definition at line 119 of file JPointer.hh.

    {
      return __p;
    }

JRewindableObjectIterator< T > * & JLANG::JPointer< JRewindableObjectIterator< T > >::getReference ( )

inlineinherited

Get rereference to internal pointer.

Returns

reference to internal pointer

Definition at line 130 of file JPointer.hh.

    {
      return __p;
    }

virtual bool JLANG::JAbstractPointer< JRewindableObjectIterator< T > >::equals ( const JAbstractPointer< JRewindableObjectIterator< T > > &  object ) const

inlinevirtualinherited

Equals.

The equality is evaluated by comparison of the internal pointers.

Parameters

object

abstract pointer

Returns

true if equals; else false

Definition at line 50 of file JAbstractPointer.hh.

    {
      return this->get() == object.get();
    }

bool JLANG::JAbstractPointer< JRewindableObjectIterator< T > >::is_valid ( ) const

inlineinherited

Check validity of pointer.

Returns

true if pointer not null; else false

Definition at line 83 of file JAbstractPointer.hh.

    { 
      return this->get() != NULL; 
    }

JRewindableObjectIterator< T > * JLANG::JAbstractPointer< JRewindableObjectIterator< T > >::operator-> ( ) const

inlineinherited

Smart pointer operator.

Returns

pointer to object

Definition at line 112 of file JAbstractPointer.hh.

    { 
      if (!is_valid())
        throw JNullPointerException("JAbstractPointer::operator->()");
      else
        return this->get();
    }

JLANG::JAbstractPointer< JRewindableObjectIterator< T > >::operator JRewindableObjectIterator< T > * ( ) const

inlineinherited

Type conversion operator.

Returns

pointer to object

Definition at line 126 of file JAbstractPointer.hh.

    {
      return this->get();
    }

Member Data Documentation

int* JLANG::JSharedCounter::counter

protectedinherited

Definition at line 94 of file JSharedCounter.hh.

JRewindableObjectIterator< T > * JLANG::JPointer< JRewindableObjectIterator< T > >::__p

protectedinherited

pointer to object

Definition at line 136 of file JPointer.hh.

---

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

• JObjectReader.hh