JLANG::JAbstractObjectIterator< T > Class Template Reference

Abstract object iterator. More...

#include <JAbstractObjectIterator.hh>

Inheritance diagram for JLANG::JAbstractObjectIterator< T >:

Public Types
typedef JObjectIterator< T >::pointer_type	pointer_type

Public Member Functions
virtual bool	setObject (T &object)=0
	Set object. 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...

Protected Member Functions
	JAbstractObjectIterator ()
	Default constructor. More...

Protected Attributes
T	object
	object More...
bool	has_next
	status More...

Private Attributes
pointer_type	ps

Detailed Description

template<class T>
class JLANG::JAbstractObjectIterator< T >

Abstract object iterator.

This class implements the JObjectIterator interface via a single interface method setObject().
An internal object is used for which the default constructor should exist.

Definition at line 23 of file JAbstractObjectIterator.hh.

Member Typedef Documentation

pointer_type

template<class T>

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

Definition at line 39 of file JAbstractObjectIterator.hh.

Constructor & Destructor Documentation

JAbstractObjectIterator()

template<class T>

JLANG::JAbstractObjectIterator< T >::JAbstractObjectIterator ( )

inlineprotected

Default constructor.

Definition at line 30 of file JAbstractObjectIterator.hh.

                              :
      has_next(false)
    {}

Member Function Documentation

setObject()

template<class T>

virtual bool JLANG::JAbstractObjectIterator< T >::setObject ( T &  object )

pure virtual

Set object.

Parameters

object

reference to object to be set

Returns

true if set; else false

Implemented in JDATABASE::JDatabaseObjectIterator< T >, JNET::JControlHostObjectIterator< T >, JNET::JLigierObjectIterator< T >, JSUPPORT::JDAQFileReader< T, true >, JIO::JReaderObjectIterator< T >, and JLANG::JStreamObjectIterator< T >.

hasNext()

template<class T>

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

inlinevirtual

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;
    }

next()

template<class T>

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

inlinevirtual

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;
    }

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

Definition at line 88 of file JObjectIterator.hh.

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

Member Data Documentation

object

template<class T>

T JLANG::JAbstractObjectIterator< T >::object

protected

object

Definition at line 34 of file JAbstractObjectIterator.hh.

has_next

template<class T>

bool JLANG::JAbstractObjectIterator< T >::has_next

protected

status

Definition at line 35 of file JAbstractObjectIterator.hh.

ps

template<class T>

pointer_type JLANG::JAbstractObjectIterator< T >::ps

private

Definition at line 84 of file JAbstractObjectIterator.hh.

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

• JAbstractObjectIterator.hh