pool::TokenIterator Class Reference

TokenIterator is an implementation of the ITokenIterator interface. More...

#include <TokenIterator.h>

Inheritance diagram for pool::TokenIterator:

Collaboration diagram for pool::TokenIterator:

Public Member Functions
	TokenIterator (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
virtual Token *	next () override final
	Advances tne iterator and returns a pointer to next token.
virtual std::size_t	size () override final
	Return the size of the collection.
virtual bool	seek (std::size_t position) override final
	Seek to a given position in the collection.

Private Attributes
DbContainer *	m_container
Token *	m_refToken

Detailed Description

TokenIterator is an implementation of the ITokenIterator interface.

Definition at line 24 of file TokenIterator.h.

Constructor & Destructor Documentation

TokenIterator() [1/2]

pool::TokenIterator::TokenIterator	(	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 )
{
   DbDatabase dbH( fileDescriptor.dbc()->handle() );
   if ( dbH.isValid() )  {
      m_refToken = new Token(dbH.cntToken(containerName));
      m_container = new 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()

pool::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]

pool::TokenIterator::TokenIterator ( const TokenIterator & )

delete

Member Function Documentation

next()

Token * pool::TokenIterator::next ( )

finaloverridevirtual

Advances tne iterator and returns a pointer to next token.

Returns

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

Implements pool::ITokenIterator.

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

delete

seek()

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

finaloverridevirtual

Seek to a given position in the collection.

Parameters

position

The position to which to seek.

Returns

True if successful, false otherwise.

Implements pool::ITokenIterator.

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 pool::TokenIterator::size ( )

finaloverridevirtual

Return the size of the collection.

Implements pool::ITokenIterator.

Definition at line 48 of file TokenIterator.cxx.

{
  return m_container->size();
}

Member Data Documentation

m_container

DbContainer* pool::TokenIterator::m_container

private

Definition at line 54 of file TokenIterator.h.

m_refToken

Token* pool::TokenIterator::m_refToken

private

Definition at line 55 of file TokenIterator.h.

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

• TokenIterator.h
• TokenIterator.cxx