JLANG::JAbstractObjectReader< T > Struct Template Reference

Abstract interface for object reading. More...

#include <JAbstractObjectReader.hh>

Inheritance diagram for JLANG::JAbstractObjectReader< T >:

Public Types
typedef JObjectIterator< T >::pointer_type	pointer_type

Public Member Functions
virtual JObjectIterator< T > *	getHelper () const =0
	Get helper.
virtual bool	hasNext () override
	Check availability of next element.
virtual const pointer_type &	next () override
	Get next element.
virtual skip_type	skip (const skip_type ns) override
	Skip items.

Private Attributes
pointer_type	ps

Detailed Description

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

Abstract interface for object reading.

This class implements the JObjectIterator interface by transferring the interface methods to a helper object via a single interface method getHelper().

Definition at line 23 of file JAbstractObjectReader.hh.

Member Typedef Documentation

pointer_type

template<class T >

JObjectIterator<T>::pointer_type JLANG::JAbstractObjectReader< T >::pointer_type

Definition at line 27 of file JAbstractObjectReader.hh.

Member Function Documentation

getHelper()

template<class T >

virtual JObjectIterator< T > * JLANG::JAbstractObjectReader< T >::getHelper ( ) const

pure virtual

Get helper.

Returns

pointer to helper

Implemented in JLANG::JAbstractAccessibleObjectReader< T >, JLANG::JAbstractAccessibleObjectReader< Evt >, JLANG::JAbstractAccessibleObjectReader< JDAQSummaryslice >, JLANG::JAbstractAccessibleObjectReader< JHead_t >, JLANG::JAbstractAccessibleObjectReader< JTail_t >, JLANG::JAbstractAccessibleObjectReader< JTypeList< JDAQEvent, JNullType > >, JLANG::JAbstractAccessibleObjectReader< KM3NETDAQ::JDAQEvent >, JLANG::JAbstractRewindableObjectReader< T >, JLANG::JAbstractRewindableObjectReader< const event_type >, JLANG::JAbstractRewindableObjectReader< JHead_t >, JLANG::JAbstractRewindableObjectReader< JTail_t >, JLANG::JAccessibleObjectReader< T >, JLANG::JAccessibleObjectReader< Evt >, JLANG::JAccessibleObjectReader< JDAQSummaryslice >, JLANG::JAccessibleObjectReader< JHead_t >, JLANG::JAccessibleObjectReader< JTail_t >, JLANG::JAccessibleObjectReader< JTypeList< JDAQEvent, JNullType > >, JLANG::JAccessibleObjectReader< KM3NETDAQ::JDAQEvent >, JLANG::JObjectReader< T >, JLANG::JRewindableObjectReader< T >, JLANG::JRewindableObjectReader< const event_type >, JLANG::JRewindableObjectReader< const T >, JLANG::JRewindableObjectReader< JHead_t >, and JLANG::JRewindableObjectReader< JTail_t >.

hasNext()

template<class T >

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

inlineoverridevirtual

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());
    }

next()

template<class T >

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

inlineoverridevirtual

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;
    }

skip()

template<class T >

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

inlineoverridevirtual

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;
    } 

Member Data Documentation

ps

template<class T >

pointer_type JLANG::JAbstractObjectReader< T >::ps

private

Definition at line 78 of file JAbstractObjectReader.hh.

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

• JAbstractObjectReader.hh