taco::BTree::Iterator Class Reference

#include <index/btree/BTree.h>

Inheritance diagram for taco::BTree::Iterator:

Public Member Functions
	~Iterator ()
bool	Next () override
	Moves the iterator to the next indexed item if any. More...
bool	IsAtValidItem () override
	Returns whether the iterator is currently at a valid indexed item. More...
const Record &	GetCurrentItem () override
	Returns the current indexed item the iterator is currently at, where the GetData() and GetLength() pair describes a valid buffer that contains the key, and GetRecordId() is set to the record ID of the heap record (not the index record!). More...
RecordId	GetCurrentRecordId () override
	Returns the record id of the indexed item the iterator is currently at. More...
void	EndScan () override
	Ends the index scan. More...
Public Member Functions inherited from taco::Index::Iterator
	Iterator ()=default
	Iterator (const Iterator &)=delete
Iterator &	operator= (const Iterator &)=delete
	Iterator (Iterator &&it)=default
	Default move constructor. More...
Iterator &	operator= (Iterator &&it)=default
	Default move assignment. More...
constexpr const Index *	GetIndex () const
	Returns the underlying index. More...

Private Member Functions
	Iterator (BTree *btree, ScopedBufferId bufid, SlotId one_before_matching_sid, const IndexKey *key, bool upper_isstrict)

Private Attributes
ScopedBufferId	m_bufid
SlotId	m_sid
Record	m_rec
UniqueIndexKey	m_upper
std::vector< Datum >	m_upper_data_buffer
bool	m_upper_isstrict

Friends
class	BTree

Additional Inherited Members
Protected Member Functions inherited from taco::Index::Iterator
	Iterator (Index *index)
template<class T >
constexpr T *	GetIndexAs () const
	Static casts the m_index pointer to T* type. More...

Constructor & Destructor Documentation

~Iterator()

taco::BTree::Iterator::~Iterator ( )

inlinevirtual

Reimplemented from taco::Index::Iterator.

Iterator()

taco::BTree::Iterator::Iterator ( BTree *  btree, ScopedBufferId  bufid, SlotId  one_before_matching_sid, const IndexKey *  key, bool  upper_isstrict  )

private

Member Function Documentation

EndScan()

void taco::BTree::Iterator::EndScan ( )

overridevirtual

Ends the index scan.

Implements taco::Index::Iterator.

GetCurrentItem()

const Record & taco::BTree::Iterator::GetCurrentItem ( )

overridevirtual

Returns the current indexed item the iterator is currently at, where the GetData() and GetLength() pair describes a valid buffer that contains the key, and GetRecordId() is set to the record ID of the heap record (not the index record!).

Implements taco::Index::Iterator.

GetCurrentRecordId()

RecordId taco::BTree::Iterator::GetCurrentRecordId ( )

overridevirtual

Returns the record id of the indexed item the iterator is currently at.

Implements taco::Index::Iterator.

IsAtValidItem()

bool taco::BTree::Iterator::IsAtValidItem ( )

overridevirtual

Returns whether the iterator is currently at a valid indexed item.

Implements taco::Index::Iterator.

Next()

bool taco::BTree::Iterator::Next ( )

overridevirtual

Moves the iterator to the next indexed item if any.

Returns true if there's one, or false if there's not.

Implements taco::Index::Iterator.

Friends And Related Function Documentation

BTree

friend class BTree

friend

Member Data Documentation

m_bufid

ScopedBufferId taco::BTree::Iterator::m_bufid

private

m_rec

Record taco::BTree::Iterator::m_rec

private

m_sid

SlotId taco::BTree::Iterator::m_sid

private

m_upper

UniqueIndexKey taco::BTree::Iterator::m_upper

private

m_upper_data_buffer

std::vector<Datum> taco::BTree::Iterator::m_upper_data_buffer

private

m_upper_isstrict

bool taco::BTree::Iterator::m_upper_isstrict

private

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

• index/btree/BTree.h
• index/btree/BTreeIterator.cpp