Contains the actual key value pairs of the btree. More...

#include <page.h>

Inheritance diagram for pstsdk::bt_leaf_page< K, V >:

Collaboration diagram for pstsdk::bt_leaf_page< K, V >:

Public Member Functions
	bt_leaf_page (const shared_db_ptr &db, const page_info &pi, std::vector< std::pair< K, V > > data)
	Construct a leaf page from disk.

const V &	get_value (uint pos) const
	Returns the value at the associated position on this leaf node.

const K &	get_key (uint pos) const
	Returns the key at the specified position.

uint	num_values () const
	Returns the number of entries in this btree_node.

Public Member Functions inherited from pstsdk::bt_page< K, V >
	bt_page (const shared_db_ptr &db, const page_info &pi, ushort level)
	Construct a bt_page from disk.

ushort	get_level () const
	Returns the level of this bt_page.

Public Member Functions inherited from pstsdk::page
	page (const shared_db_ptr &db, const page_info &pi)
	Construct a page from disk.

page_id	get_page_id () const
	Get the page id.

ulonglong	get_address () const
	Get the physical address of this page.

Public Member Functions inherited from pstsdk::btree_node< K, V >
virtual	~btree_node ()

const_iterator	begin () const
	Returns a STL style iterator positioned at the first entry.

const_iterator	end () const
	Returns a STL style iterator positioned at the "end" entry.

int	binary_search (const K &key) const
	Performs a binary search over the keys of this btree_node.

Public Member Functions inherited from pstsdk::btree_node_leaf< K, V >
virtual	~btree_node_leaf ()

const V &	lookup (const K &key) const
	Looks up the associated value for a given key.

Additional Inherited Members
Public Types inherited from pstsdk::btree_node< K, V >
typedef const_btree_node_iter< K, V >	const_iterator

Protected Member Functions inherited from pstsdk::page
shared_db_ptr	get_db_ptr () const

Protected Member Functions inherited from pstsdk::btree_node_leaf< K, V >
void	first (btree_iter_impl< K, V > &iter) const
	Positions the iterator at the first element on this tree.

void	last (btree_iter_impl< K, V > &iter) const
	Positions the iterator at the "end" element.

void	next (btree_iter_impl< K, V > &iter) const
	Moves the iterator to the next element.

void	prev (btree_iter_impl< K, V > &iter) const
	Moves the iterator to the previous element.

Protected Attributes inherited from pstsdk::page
weak_db_ptr	m_db
	The database context we're a member of.

page_id	m_pid
	Page id.

ulonglong	m_address
	Address of this page.

Detailed Description

template<typename K, typename V>
class pstsdk::bt_leaf_page< K, V >

Contains the actual key value pairs of the btree.

Template Parameters

K	key type
V	value type

Definition at line 154 of file page.h.

Constructor & Destructor Documentation

◆ bt_leaf_page()

template<typename K , typename V >

pstsdk::bt_leaf_page< K, V >::bt_leaf_page	(	const shared_db_ptr &	db,
		const page_info &	pi,
		std::vector< std::pair< K, V > >	data
	)

inline

Construct a leaf page from disk.

Parameters

[in]	db	The database context
[in]	pi	Information about this page
[in]	data	The key/value pairs on this leaf page

Definition at line 165 of file page.h.

Member Function Documentation

◆ get_key()

template<typename K , typename V >

const K & pstsdk::bt_leaf_page< K, V >::get_key ( uint pos ) const

inlinevirtual

Returns the key at the specified position.

This is specific to this btree_node, not the entire tree

Parameters

[in] pos The position to retrieve the key for

Returns: The key at the requested position

Implements pstsdk::btree_node< K, V >.

Definition at line 175 of file page.h.

◆ get_value()

template<typename K , typename V >

const V & pstsdk::bt_leaf_page< K, V >::get_value ( uint pos ) const

inlinevirtual

Returns the value at the associated position on this leaf node.

Parameters

[in] pos The position to retrieve the value for

Returns: The value at the requested position

Implements pstsdk::btree_node_leaf< K, V >.

Definition at line 173 of file page.h.

◆ num_values()

template<typename K , typename V >

uint pstsdk::bt_leaf_page< K, V >::num_values ( ) const

inlinevirtual

Returns the number of entries in this btree_node.

This is specific to this btree_node, not the entire tree

Returns: The number of keys in this btree_node

Implements pstsdk::btree_node< K, V >.

Definition at line 177 of file page.h.

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

pstsdk/ndb/database_iface.h
pstsdk/ndb/page.h

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ bt_leaf_page()

Member Function Documentation

◆ get_key()

◆ get_value()

◆ num_values()