backends/quartz/quartz_postlist.cc File Reference

#include <config.h>
#include "omdebug.h"
#include "quartz_postlist.h"
#include "quartz_utils.h"
#include "bcursor.h"
#include "database.h"
#include "noreturn.h"
#include "utils.h"

Include dependency graph for quartz_postlist.cc:

Go to the source code of this file.

Classes

class QPostlistChunkWriter

QPostlistChunkWriter is a wrapper which acts roughly as an output iterator on a postlist chunk, taking care of the messy details. More...

class QPostlistChunkReader

QPostlistChunkReader is essentially an iterator wrapper around a postlist chunk. More...

Functions

static void make_key (const string &tname, Xapian::docid did, string &key)

Make a key for accessing the postlist.

static void make_key (const string &tname, string &key)

XAPIAN_NORETURN (static void report_read_error(const char *position))

Report an error when reading the posting list.

static void report_read_error (const char *position)

static bool get_tname_from_key (const char **src, const char *end, string &tname)

static bool check_tname_in_key_lite (const char **keypos, const char *keyend, const string &tname)

static bool check_tname_in_key (const char **keypos, const char *keyend, const string &tname)

static Xapian::docid read_start_of_first_chunk (const char **posptr, const char *end, Xapian::doccount *number_of_entries_ptr, Xapian::termcount *collection_freq_ptr)

Read the start of the first chunk in the posting list.

static void read_did_increase (const char **posptr, const char *end, Xapian::docid *did_ptr)

static void read_wdf_and_length (const char **posptr, const char *end, Xapian::termcount *wdf_ptr, quartz_doclen_t *doclength_ptr)

Read the wdf and the document length of an item.

static Xapian::docid read_start_of_chunk (const char **posptr, const char *end, Xapian::docid first_did_in_chunk, bool *is_last_chunk_ptr)

Read the start of a chunk.

static string make_wdf_and_length (Xapian::termcount wdf, quartz_doclen_t doclength)

static void write_start_of_chunk (string &chunk, unsigned int start_of_chunk_header, unsigned int end_of_chunk_header, bool is_last_chunk, Xapian::docid first_did_in_chunk, Xapian::docid last_did_in_chunk)

static string make_start_of_first_chunk (Xapian::termcount entries, Xapian::termcount collectionfreq, Xapian::docid new_did)

Make the data to go at the start of the very first chunk.

static string make_start_of_chunk (bool new_is_last_chunk, Xapian::docid new_first_did, Xapian::docid new_final_did)

Make the data to go at the start of a standard chunk.

Variables

const unsigned int CHUNKSIZE = 2000

Function Documentation

static void make_key	(	const string &	tname,
		Xapian::docid	did,
		string &	key
	)			`[static]`

Make a key for accessing the postlist.

Definition at line 34 of file quartz_postlist.cc.

References pack_string_preserving_sort(), and pack_uint_preserving_sort().

static void make_key	(	const string &	tname,
		string &	key
	)			`[static]`

Definition at line 41 of file quartz_postlist.cc.

References pack_string_preserving_sort().

XAPIAN_NORETURN ( static void report_read_error(const char *position) )

Report an error when reading the posting list.

static void report_read_error ( const char * position ) [static]

Definition at line 105 of file quartz_postlist.cc.

static bool get_tname_from_key	(	const char **	src,
		const char *	end,
		string &	tname
	)			`[inline, static]`

Definition at line 115 of file quartz_postlist.cc.

References unpack_string_preserving_sort().

static bool check_tname_in_key_lite	(	const char **	keypos,
		const char *	keyend,
		const string &	tname
	)			`[inline, static]`

Definition at line 122 of file quartz_postlist.cc.

References get_tname_from_key(), and report_read_error().

static bool check_tname_in_key	(	const char **	keypos,
		const char *	keyend,
		const string &	tname
	)			`[inline, static]`

Definition at line 136 of file quartz_postlist.cc.

References check_tname_in_key_lite().

static Xapian::docid read_start_of_first_chunk	(	const char **	posptr,
		const char *	end,
		Xapian::doccount *	number_of_entries_ptr,
		Xapian::termcount *	collection_freq_ptr
	)			`[static]`

Read the start of the first chunk in the posting list.

Definition at line 145 of file quartz_postlist.cc.

References DEBUGCALL_STATIC, DEBUGLINE, QuartzPostList::read_number_of_entries(), report_read_error(), RETURN, and unpack_uint().

static void read_did_increase	(	const char **	posptr,
		const char *	end,
		Xapian::docid *	did_ptr
	)			`[inline, static]`

Definition at line 198 of file quartz_postlist.cc.

References report_read_error(), and unpack_uint().

static void read_wdf_and_length	(	const char **	posptr,
		const char *	end,
		Xapian::termcount *	wdf_ptr,
		quartz_doclen_t *	doclength_ptr
	)			`[inline, static]`

Read the wdf and the document length of an item.

Definition at line 208 of file quartz_postlist.cc.

References report_read_error(), and unpack_uint().

static Xapian::docid read_start_of_chunk	(	const char **	posptr,
		const char *	end,
		Xapian::docid	first_did_in_chunk,
		bool *	is_last_chunk_ptr
	)			`[static]`

Read the start of a chunk.

Definition at line 219 of file quartz_postlist.cc.

References DEBUGCALL_STATIC, DEBUGLINE, report_read_error(), RETURN, unpack_bool(), and unpack_uint().

static string make_wdf_and_length	(	Xapian::termcount	wdf,
		quartz_doclen_t	doclength
	)			`[static]`

Definition at line 246 of file quartz_postlist.cc.

References pack_uint().

static void write_start_of_chunk	(	string &	chunk,
		unsigned int	start_of_chunk_header,
		unsigned int	end_of_chunk_header,
		bool	is_last_chunk,
		Xapian::docid	first_did_in_chunk,
		Xapian::docid	last_did_in_chunk
	)			`[static]`

Definition at line 251 of file quartz_postlist.cc.

References Assert, pack_bool(), and pack_uint().

static string make_start_of_first_chunk	(	Xapian::termcount	entries,
		Xapian::termcount	collectionfreq,
		Xapian::docid	new_did
	)			`[inline, static]`

Make the data to go at the start of the very first chunk.

Definition at line 373 of file quartz_postlist.cc.

References pack_uint().

static string make_start_of_chunk	(	bool	new_is_last_chunk,
		Xapian::docid	new_first_did,
		Xapian::docid	new_final_did
	)			`[inline, static]`

Make the data to go at the start of a standard chunk.

Definition at line 383 of file quartz_postlist.cc.

References Assert, pack_bool(), and pack_uint().

Variable Documentation

const unsigned int CHUNKSIZE = 2000

Definition at line 51 of file quartz_postlist.cc.

Documentation for Xapian (version 1.0.10).
Generated on 24 Dec 2008 by Doxygen 1.5.2.


Classes
class	QPostlistChunkWriter
	QPostlistChunkWriter is a wrapper which acts roughly as an output iterator on a postlist chunk, taking care of the messy details. More...
class	QPostlistChunkReader
	QPostlistChunkReader is essentially an iterator wrapper around a postlist chunk. More...
Functions
static void	make_key (const string &tname, Xapian::docid did, string &key)
	Make a key for accessing the postlist.
static void	make_key (const string &tname, string &key)
	XAPIAN_NORETURN (static void report_read_error(const char *position))
	Report an error when reading the posting list.
static void	report_read_error (const char *position)
static bool	get_tname_from_key (const char *src, const char end, string &tname)
static bool	check_tname_in_key_lite (const char *keypos, const char keyend, const string &tname)
static bool	check_tname_in_key (const char *keypos, const char keyend, const string &tname)
static Xapian::docid	read_start_of_first_chunk (const char *posptr, const char end, Xapian::doccount number_of_entries_ptr, Xapian::termcount collection_freq_ptr)
	Read the start of the first chunk in the posting list.
static void	read_did_increase (const char *posptr, const char end, Xapian::docid *did_ptr)
static void	read_wdf_and_length (const char *posptr, const char end, Xapian::termcount wdf_ptr, quartz_doclen_t doclength_ptr)
	Read the wdf and the document length of an item.
static Xapian::docid	read_start_of_chunk (const char *posptr, const char end, Xapian::docid first_did_in_chunk, bool *is_last_chunk_ptr)
	Read the start of a chunk.
static string	make_wdf_and_length (Xapian::termcount wdf, quartz_doclen_t doclength)
static void	write_start_of_chunk (string &chunk, unsigned int start_of_chunk_header, unsigned int end_of_chunk_header, bool is_last_chunk, Xapian::docid first_did_in_chunk, Xapian::docid last_did_in_chunk)
static string	make_start_of_first_chunk (Xapian::termcount entries, Xapian::termcount collectionfreq, Xapian::docid new_did)
	Make the data to go at the start of the very first chunk.
static string	make_start_of_chunk (bool new_is_last_chunk, Xapian::docid new_first_did, Xapian::docid new_final_did)
	Make the data to go at the start of a standard chunk.
Variables
const unsigned int	CHUNKSIZE = 2000