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CdbBdbSSimpleConfigIterator.cc

Go to the documentation of this file.

// File and Version Information:
//      $Id: CdbBdbSSimpleConfigIterator.cc,v 1.1 2004/05/12 17:26:28 gapon Exp $

/// Implementation file for the CdbBdbSSimpleConfigIterator class
/**
  * @see CdbBdbSCi
  */

#include "BaBar/BaBar.hh"

#include "CdbBdbShared/CdbBdbSSimpleConfigIterator.hh"

CdbBdbSSimpleConfigIterator::CdbBdbSSimpleConfigIterator( const CdbBdbSSimpleConfigIterator& theItr ) :
    _isValid            (theItr._isValid),
    _hasEverBeenAdvanced(theItr._hasEverBeenAdvanced),
    _value              (theItr._value)
{ }

CdbBdbSSimpleConfigIterator::CdbBdbSSimpleConfigIterator( const CdbBdbSConfigElement& theConfigElement,
                                                          const BdbTime&              theBeginTime,
                                                          const BdbTime&              theEndTime ) :
    _isValid               (false),
    _hasEverBeenAdvanced   (false),
    _value(CdbBdbSConfigInterval( theConfigElement,
                                  theBeginTime,
                                  theEndTime ))
{ }

CdbBdbSSimpleConfigIterator::CdbBdbSSimpleConfigIterator( const CdbBdbSConfigInterval& theConfigInterval ) :
    _isValid               (false),
    _hasEverBeenAdvanced   (false),
    _value(theConfigInterval)
{ }

CdbBdbSSimpleConfigIterator::~CdbBdbSSimpleConfigIterator( )
{ }

CdbStatus
CdbBdbSSimpleConfigIterator::reset( )
{
    _isValid             = false;
    _hasEverBeenAdvanced = false;

    return CdbStatus::Success;
}

bool
CdbBdbSSimpleConfigIterator::next( )
{
    if( _isValid ) {

      // Now we've got into the "PAST_LAST_ELEMENT" state.

        _isValid = false;

    } else {

        if( !_hasEverBeenAdvanced ) {

            _isValid             = true;
            _hasEverBeenAdvanced = true;

        } else {

          // Otherwise this iterator should remain at "PAST_LAST_ELEMENT" state.
          // The only way to get out of this state is to to call ::reset() method.

            ;
        }
    }
    return _isValid;
}

CdbBdbSSimpleConfigIterator::ValueType
CdbBdbSSimpleConfigIterator::value( )
{
    if( _isValid ) {
        return _value;
    }

  // Invalid interval initialized with default constructor.

    return CdbBdbSConfigInterval( );
}

bool
CdbBdbSSimpleConfigIterator::isValid( )
{
    return _isValid;
}

CdbBdbSSimpleConfigIterator::InterfaceType*
CdbBdbSSimpleConfigIterator::clone( ) const
{
    return new CdbBdbSSimpleConfigIterator( *this );
}

/////////////////
// End Of File //
/////////////////

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