#include <PageCircularBufferIterator.h>

Inheritance diagram for PageCircularBufferIterator:

Collaboration diagram for PageCircularBufferIterator:

Public Member Functions
	PageCircularBufferIterator (unsigned int id, PageCircularBufferPtr buffer, pdb::PDBLoggerPtr logger)

	~PageCircularBufferIterator ()

bool	hasNext () override

PDBPagePtr	next () override

unsigned int	getId ()

Public Member Functions inherited from PageIteratorInterface
virtual	~PageIteratorInterface ()

Private Attributes
PageCircularBufferPtr	buffer

pdb::PDBLoggerPtr	logger

unsigned int	id

Detailed Description

This provides a wrapper of iterator to the page circular buffer.

Definition at line 39 of file PageCircularBufferIterator.h.

Constructor & Destructor Documentation

PageCircularBufferIterator::PageCircularBufferIterator	(	unsigned int	id,
		PageCircularBufferPtr	buffer,
		pdb::PDBLoggerPtr	logger
	)

Definition at line 27 of file PageCircularBufferIterator.cc.

PageCircularBufferIterator::~PageCircularBufferIterator ( )

Definition at line 35 of file PageCircularBufferIterator.cc.

Member Function Documentation

unsigned int PageCircularBufferIterator::getId ( )

Return the ID of this iterator. The ID can be used to specify the scanning thread owning the iterator.

Definition at line 58 of file PageCircularBufferIterator.cc.

bool PageCircularBufferIterator::hasNext ( )

overridevirtual

Return true only if the buffer is empty and closed.

Implements PageIteratorInterface.

Definition at line 52 of file PageCircularBufferIterator.cc.

PDBPagePtr PageCircularBufferIterator::next ( )

overridevirtual

Return the page at the head of the buffer. It will block if the buffer is empty but not closed. It will return the page from head of the buffer, if the buffer is not empty. It will return nullptr, if the buffer is empty and is closed.

Implements PageIteratorInterface.

Definition at line 38 of file PageCircularBufferIterator.cc.