Caching of externally stored column prefixes. More...

#include "row0ext.h"
#include "lob0lob.h"
#include "btr0cur.h"

Functions
static void	row_ext_cache_fill (const dict_index_t index, row_ext_t ext, ulint i, const page_size_t &page_size, bool is_sdi, const dfield_t *dfield)
	Fills the column prefix cache of an externally stored column. More...

row_ext_t *	row_ext_create_func (const dict_index_t index, ulint n_ext, const ulint ext, uint32_t flags, const dtuple_t tuple, bool is_sdi, mem_heap_t heap)
	Creates a cache of column prefixes of externally stored columns. More...

Detailed Description

Caching of externally stored column prefixes.

Created September 2006 Marko Makela

Function Documentation

static void row_ext_cache_fill	(	const dict_index_t *	index,
		row_ext_t *	ext,
		ulint	i,
		const page_size_t &	page_size,
		bool	is_sdi,
		const dfield_t *	dfield
	)

static

Fills the column prefix cache of an externally stored column.

Parameters

[in]	index	clustered index from which LOB is fetched.
[in,out]	ext	column prefix cache
[in]	i	index of ext->ext[]
[in]	page_size	page size
[in]	dfield	data field
[in]	is_sdi	true for SDI Index

Creates a cache of column prefixes of externally stored columns.

Parameters

[in]	index	the index to which LOB belongs.
[in]	n_ext	number of externally stored columns
[in]	ext	col_no's of externally stored columns in the InnoDB table object, as reported by dict_col_get_no(); NOT relative to the records in the clustered index
[in]	flags	table->flags
[in]	tuple	data tuple containing the field references of the externally stored columns; must be indexed by col_no; the clustered index record must be covered by a lock or a page latch to prevent deletion (rollback or purge)
[in]	is_sdi	true for SDI Indexes
[in,out]	heap	heap where created