tkrzw::PolyIndex::Iterator Class Reference

Iterator for each record. More...

#include <tkrzw_index.h>

Public Member Functions
	~Iterator ()
	Destructor. More...
	Iterator (const Iterator &rhs)=delete
	Copy and assignment are disabled. More...
Iterator &	operator= (const Iterator &rhs)=delete
void	First ()
	Initializes the iterator to indicate the first record. More...
void	Last ()
	Initializes the iterator to indicate the last record. More...
void	Jump (std::string_view key, std::string_view value="")
	Initializes the iterator to indicate a specific range. More...
void	Next ()
	Moves the iterator to the next record. More...
void	Previous ()
	Moves the iterator to the previous record. More...
bool	Get (std::string *key=nullptr, std::string *value=nullptr)
	Gets the key and the value of the current record of the iterator. More...

Friends
class	PolyIndex

Detailed Description

Iterator for each record.

Constructor & Destructor Documentation

~Iterator()

tkrzw::PolyIndex::Iterator::~Iterator

(

)

Destructor.

Iterator()

tkrzw::PolyIndex::Iterator::Iterator ( const Iterator &  rhs )

explicitdelete

Copy and assignment are disabled.

Member Function Documentation

First()

void tkrzw::PolyIndex::Iterator::First

(

)

Initializes the iterator to indicate the first record.

Last()

void tkrzw::PolyIndex::Iterator::Last

(

)

Initializes the iterator to indicate the last record.

Jump()

void tkrzw::PolyIndex::Iterator::Jump	(	std::string_view	key,
		std::string_view	value = ""
	)

Initializes the iterator to indicate a specific range.

Parameters

key	The key of the lower bound.
value	The value of the lower bound.

Next()

void tkrzw::PolyIndex::Iterator::Next

(

)

Moves the iterator to the next record.

Previous()

void tkrzw::PolyIndex::Iterator::Previous

(

)

Moves the iterator to the previous record.

Get()

bool tkrzw::PolyIndex::Iterator::Get	(	std::string *	key = nullptr,
		std::string *	value = nullptr
	)

Gets the key and the value of the current record of the iterator.

Parameters

key	The pointer to a string object to contain the record key. If it is nullptr, the key data is ignored.
value	The pointer to a string object to contain the record value. If it is nullptr, the value data is ignored.

Returns

True on success or false on failure. If theres no record to fetch, false is returned.