temptable::Hash_duplicates Class Reference

#include <index.h>

Inheritance diagram for temptable::Hash_duplicates:

Public Types
typedef Hash_duplicates_container	Container
Public Types inherited from temptable::Index
enum class	Lookup { FOUND , NOT_FOUND_CURSOR_POSITIONED_ON_NEXT , NOT_FOUND_CURSOR_UNDEFINED }
	Index lookup (search) result. More...

Public Member Functions
	Hash_duplicates (const Table &table, const KEY &mysql_index, const Allocator< Indexed_cells > &allocator)
Result	insert (const Indexed_cells &indexed_cells, Cursor *insert_position) override
	Insert a new entry into the index. More...
Lookup	lookup (const Indexed_cells &search_cells, Cursor *first) const override
	Lookup (search) an indexed cells. More...
Lookup	lookup (const Indexed_cells &search_cells, Cursor *first, Cursor *after_last) const override
	Lookup (search) an indexed cells. More...
void	erase (const Cursor &target) override
	Erase the indexed cells pointer to by a cursor. More...
void	truncate () override
	Truncate the index, deleting all of its entries. More...
Cursor	begin () const override
	Get a cursor to the first entry. More...
Cursor	end () const override
	Get a cursor after the last entry. More...
Public Member Functions inherited from temptable::Index
	Index (const Table &table, const KEY &mysql_index)
	Constructor. More...
virtual	~Index ()
	Destructor. More...
size_t	number_of_indexed_columns () const
	Get the number of indexed columns by this index. More...
const Indexed_column &	indexed_column (size_t i) const
	Get the Nth indexed column. More...
const Table &	table () const
	Get the table of the index. More...
const KEY &	mysql_index () const
	Get the MySQL index structure which corresponds to this index. More...

Public Attributes
Container	m_hash_table

Member Typedef Documentation

Container

typedef Hash_duplicates_container temptable::Hash_duplicates::Container

Constructor & Destructor Documentation

Hash_duplicates()

temptable::Hash_duplicates::Hash_duplicates	(	const Table &	table,
		const KEY &	mysql_index,
		const Allocator< Indexed_cells > &	allocator
	)

Member Function Documentation

begin()

Cursor temptable::Hash_duplicates::begin ( ) const

overridevirtual

Get a cursor to the first entry.

Returns

cursor to the first indexed cells in index order

Implements temptable::Index.

end()

Cursor temptable::Hash_duplicates::end ( ) const

overridevirtual

Get a cursor after the last entry.

Returns

a cursor after the last indexed cells in index order

Implements temptable::Index.

erase()

void temptable::Hash_duplicates::erase ( const Cursor &  target )

overridevirtual

Erase the indexed cells pointer to by a cursor.

Parameters

[in]

target

Position to erase.

Implements temptable::Index.

insert()

Result temptable::Hash_duplicates::insert ( const Indexed_cells &  indexed_cells, Cursor *  insert_position  )

overridevirtual

Insert a new entry into the index.

Returns

Result::OK or another Result::* error code

Parameters

[in]	indexed_cells	Indexed cells to insert.
[out]	insert_position	If insert succeeds (Result::OK) this will be set to the position inside the index where the new indexed cells where inserted.

Implements temptable::Index.

lookup() [1/2]

Index::Lookup temptable::Hash_duplicates::lookup ( const Indexed_cells &  search_cells, Cursor *  first  ) const

overridevirtual

Lookup (search) an indexed cells.

Return values

Lookup::FOUND	the provided search_cells were found and first was positioned on them (the first entry, if there are duplicates).
Lookup::NOT_FOUND_CURSOR_POSITIONED_ON_NEXT	the provided search_cells were not found and first was positioned on the next indexed cells in index order.
Lookup::NOT_FOUND_CURSOR_UNDEFINED	the provided search_cells were not found and first is undefined.

Parameters

[in]	search_cells	Indexed cells to search for.
[out]	first	First indexed cells that were found, see above.

Implements temptable::Index.

lookup() [2/2]

Index::Lookup temptable::Hash_duplicates::lookup ( const Indexed_cells &  search_cells, Cursor *  first, Cursor *  after_last  ) const

overridevirtual

Lookup (search) an indexed cells.

Return values

Lookup::FOUND	the provided search_cells were found, first was positioned on them (the first entry, if there are duplicates) and after_last was positioned after the last matching entry.
Lookup::NOT_FOUND_CURSOR_POSITIONED_ON_NEXT	the provided search_cells were not found and first and after_last were positioned on the next indexed cells in index order.
Lookup::NOT_FOUND_CURSOR_UNDEFINED	the provided search_cells were not found and first and after_last are undefined.

Implements temptable::Index.

truncate()

void temptable::Hash_duplicates::truncate ( )

overridevirtual

Truncate the index, deleting all of its entries.

Implements temptable::Index.

Member Data Documentation

m_hash_table

Container temptable::Hash_duplicates::m_hash_table

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

• storage/temptable/include/temptable/index.h
• storage/temptable/src/index.cc