#include <TokenIterator.h>

Collaboration diagram for TokenIterator:

Public Member Functions
	TokenIterator (pool::FileDescriptor &fileDescriptor, const std::string &containerName)
	Constructor taking as argument the file descriptor, the container name.
	~TokenIterator ()
	TokenIterator (const TokenIterator &)=delete
TokenIterator &	operator= (const TokenIterator &)=delete
Token *	next ()
	Advances tne iterator and returns a pointer to next token.
std::size_t	size ()
	Return the size of the collection.
bool	seek (std::size_t position)
	Seek to a given position in the collection.

Private Attributes
pool::DbContainer *	m_container
Token *	m_refToken

Detailed Description

Definition at line 20 of file TokenIterator.h.

Constructor & Destructor Documentation

◆ TokenIterator() [1/2]

TokenIterator::TokenIterator	(	pool::FileDescriptor &	fileDescriptor,
		const std::string &	containerName )

Constructor taking as argument the file descriptor, the container name.

Definition at line 15 of file TokenIterator.cxx.

                                                              :
  m_container( nullptr ), m_refToken ( nullptr )
{
   pool::DbDatabase dbH( fileDescriptor.dbc()->handle() );
   if ( dbH.isValid() )  {
      m_refToken = new Token(dbH.cntToken(containerName));
      m_container = new pool::DbContainer(m_refToken->technology());
   }
   if( !dbH.isValid() || !m_container->open(dbH, m_refToken->contID(), 0, m_refToken->technology(), Io::READ).isSuccess() ) {
      throw std::runtime_error( "Selection from " + fileDescriptor.PFN() + "(" + containerName + ") failed (APR: \" TokenIterator::TokenIterator() \" from \" PersistencySvc \")" );
   }
}

◆ ~TokenIterator()

TokenIterator::~TokenIterator ( )

Definition at line 29 of file TokenIterator.cxx.

{
  delete m_container; m_container = nullptr;
  m_refToken->release(); m_refToken = nullptr;
}

◆ TokenIterator() [2/2]

TokenIterator::TokenIterator ( const TokenIterator & )

delete

Member Function Documentation

◆ next()

Token * TokenIterator::next ( )

Advances tne iterator and returns a pointer to next token.

Returns: Shared Token ptr (refCount+1) if not at the end, nullptr otherwise.

Definition at line 37 of file TokenIterator.cxx.

{
  Token::OID_t linkH(m_refToken->oid());
  if( !m_container->next(linkH).isSuccess() ) return nullptr;
  m_refToken->oid() = linkH;
  m_refToken->addRef();
  return m_refToken;
}

◆ operator=()

TokenIterator & TokenIterator::operator= ( const TokenIterator & )

delete

◆ seek()

bool TokenIterator::seek ( std::size_t position )

Seek to a given position in the collection.

Parameters

position The position to which to seek.

Returns: True if successful, false otherwise.

Definition at line 55 of file TokenIterator.cxx.

{
  if( position >= size() ) return false;
  // go to position-1, so that the next call to next() will return the Token at <position>
  m_refToken->oid().second = int(position-1);
  return true;
}

◆ size()

std::size_t TokenIterator::size ( )

Return the size of the collection.

Definition at line 48 of file TokenIterator.cxx.

{
  return m_container->size();
}

Member Data Documentation

◆ m_container

pool::DbContainer* TokenIterator::m_container

private

Definition at line 49 of file TokenIterator.h.

◆ m_refToken

Token* TokenIterator::m_refToken