#include <config.h>
#include "chert_postlist.h"
#include "chert_cursor.h"
#include "chert_database.h"
#include "debuglog.h"
#include "noreturn.h"
#include "pack.h"
#include "str.h"

Include dependency graph for chert_postlist.cc:

Classes
class	Chert::PostlistChunkWriter
	PostlistChunkWriter is a wrapper which acts roughly as an output iterator on a postlist chunk, taking care of the messy details. More...

class	Chert::PostlistChunkReader
	PostlistChunkReader is essentially an iterator wrapper around a postlist chunk. More...

Functions
static void	report_read_error (const char *position)
	Report an error when reading the posting list. More...

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. More...

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

static void	read_wdf (const char *posptr, const char end, Xapian::termcount *wdf_ptr)
	Read the wdf for an entry. More...

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. More...

static string	make_start_of_first_chunk (Xapian::doccount entries, Xapian::termcount collectionfreq, Xapian::docid new_did)
	Make the data to go at the start of the very first chunk. More...

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. More...

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)

Variables
const unsigned int	CHUNKSIZE = 2000

Function Documentation

◆ check_tname_in_key()

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

inlinestatic

Definition at line 177 of file chert_postlist.cc.

References check_tname_in_key_lite().

Referenced by Chert::PostlistChunkWriter::flush(), and ChertPostListTable::get_chunk().

◆ check_tname_in_key_lite()

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

inlinestatic

Definition at line 160 of file chert_postlist.cc.

References get_tname_from_key(), and report_read_error().

Referenced by check_tname_in_key(), ChertPostListTable::get_used_docid_range(), ChertPostListTable::merge_changes(), ChertPostList::move_to_chunk_containing(), and ChertPostList::next_chunk().

◆ get_tname_from_key()

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

inlinestatic

Definition at line 153 of file chert_postlist.cc.

References unpack_string_preserving_sort().

Referenced by check_tname_in_key_lite().

◆ make_start_of_chunk()

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

inlinestatic

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

Definition at line 361 of file chert_postlist.cc.

References Assert, Chert::PostlistChunkWriter::chunk, pack_bool(), and pack_uint().

Referenced by Chert::PostlistChunkWriter::flush(), ChertPostListTable::merge_changes(), and write_start_of_chunk().

◆ make_start_of_first_chunk()

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

inlinestatic

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

Definition at line 347 of file chert_postlist.cc.

References Chert::PostlistChunkWriter::chunk, and pack_uint().

Referenced by Chert::PostlistChunkWriter::flush(), and ChertPostListTable::merge_changes().

◆ read_did_increase()

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

inlinestatic

Definition at line 210 of file chert_postlist.cc.

References report_read_error(), and unpack_uint().

Referenced by ChertPostList::move_forward_in_chunk_to_at_least(), Chert::PostlistChunkReader::next(), and ChertPostList::next_in_chunk().

◆ read_start_of_chunk()

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 227 of file chert_postlist.cc.

References Assert, LOGCALL_STATIC, LOGVALUE, report_read_error(), RETURN, unpack_bool(), and unpack_uint().

Referenced by ChertPostList::ChertPostList(), Chert::PostlistChunkWriter::flush(), ChertPostListTable::get_chunk(), ChertPostListTable::get_used_docid_range(), ChertPostListTable::merge_changes(), ChertPostList::move_to_chunk_containing(), and ChertPostList::next_chunk().

◆ read_start_of_first_chunk()

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 186 of file chert_postlist.cc.

References LOGCALL_STATIC, LOGVALUE, ChertPostList::read_number_of_entries(), report_read_error(), RETURN, and unpack_uint().

Referenced by ChertPostList::ChertPostList(), Chert::PostlistChunkWriter::flush(), ChertPostListTable::get_chunk(), ChertPostListTable::get_used_docid_range(), ChertPostListTable::merge_changes(), and ChertPostList::move_to_chunk_containing().

◆ read_wdf()

static void read_wdf	(	const char **	posptr,
		const char *	end,
		Xapian::termcount *	wdf_ptr
	)

inlinestatic

Read the wdf for an entry.

Definition at line 220 of file chert_postlist.cc.

References report_read_error(), and unpack_uint().

Referenced by ChertPostList::ChertPostList(), ChertPostList::move_forward_in_chunk_to_at_least(), ChertPostList::move_to_chunk_containing(), Chert::PostlistChunkReader::next(), ChertPostList::next_chunk(), ChertPostList::next_in_chunk(), and Chert::PostlistChunkReader::PostlistChunkReader().

◆ report_read_error()

static void report_read_error ( const char * position )

static

Report an error when reading the posting list.

Definition at line 141 of file chert_postlist.cc.

References LOGLINE.

Referenced by check_tname_in_key_lite(), Chert::PostlistChunkWriter::flush(), ChertPostListTable::get_chunk(), ChertPostListTable::get_used_docid_range(), ChertPostList::move_to_chunk_containing(), ChertPostList::next_chunk(), read_did_increase(), ChertPostList::read_number_of_entries(), read_start_of_chunk(), read_start_of_first_chunk(), and read_wdf().

◆ write_start_of_chunk()

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 373 of file chert_postlist.cc.

References Assert, and make_start_of_chunk().

Referenced by Chert::PostlistChunkWriter::flush().

Variable Documentation

◆ CHUNKSIZE

const unsigned int CHUNKSIZE = 2000

Definition at line 85 of file chert_postlist.cc.

Referenced by Chert::PostlistChunkWriter::append().

Classes

Functions

Variables

Function Documentation

◆ check_tname_in_key()

◆ check_tname_in_key_lite()

◆ get_tname_from_key()

◆ make_start_of_chunk()

◆ make_start_of_first_chunk()

◆ read_did_increase()

◆ read_start_of_chunk()

◆ read_start_of_first_chunk()

◆ read_wdf()

◆ report_read_error()

◆ write_start_of_chunk()

Variable Documentation

◆ CHUNKSIZE