41 bool throw_if_not_present)
42 : db(db_), did(did_), current_wdf(0), current_termfreq(0)
44 LOGCALL_CTOR(DB,
"GlassTermList", db_ | did_ | throw_if_not_present);
48 if (!throw_if_not_present) {
68 msg =
"Too little data for doclen in termlist";
70 msg =
"Overflowed value for doclen in termlist";
79 msg =
"Too little data for list size in termlist";
81 msg =
"Overflowed value for list size in termlist";
114 LOGCALL_VOID(DB,
"GlassTermList::accumulate_stats", stats);
123 LOGCALL(DB,
string,
"GlassTermList::get_termname", NO_ARGS);
156 bool wdf_in_reuse =
false;
159 size_t len =
static_cast<unsigned char>(*
pos++);
171 size_t append_len =
static_cast<unsigned char>(*
pos++);
179 msg =
"Too little data for wdf in termlist";
181 msg =
"Overflowed value for wdf in termlist";
202 LOGCALL(DB,
bool,
"GlassTermList::at_end", NO_ARGS);
Xapian::termcount termlist_size
The number of entries in this termlist.
Xapian::termcount positionlist_count() const
Return the length of the position list for the current position.
std::string get_termname() const
Return the termname at the current position.
Xapian::docid did
The document id that this TermList is for.
Xapian::termcount get_doclength() const
Return the length of this document.
A position list in a glass database.
Xapian::doccount get_doccount() const
Virtual methods of Database::Internal.
const char * end
Pointer to the end of the encoded tag value.
#define LOGCALL_VOID(CATEGORY, FUNC, PARAMS)
Abstract base class for termlists.
Convert types to std::string.
GlassTermList(const GlassTermList &)
Don't allow copying.
Xapian::termcount current_wdf
The wdf for the term at the current position.
std::string current_term
The termname at the current position.
const char * pos
Current position with the encoded tag value held in data.
Xapian::termcount get_approx_size() const
Return approximate size of this termlist.
Hierarchy of classes which Xapian can throw as exceptions.
unsigned XAPIAN_TERMCOUNT_BASE_TYPE termcount
A counts of terms.
void accumulate(size_t shard_index, Xapian::termcount wdf, Xapian::termcount doclen, Xapian::doccount subtf, Xapian::doccount subdbsize)
Collate statistics and calculate the term weights for the ESet.
Xapian::Internal::intrusive_ptr< const GlassDatabase > db
The database we're reading data from.
TermList * skip_to(const std::string &term)
Skip forward to the specified term.
Xapian::doccount current_termfreq
The term frequency for the term at the current position.
static std::string make_key(Xapian::docid did)
PositionList * open_position_list(Xapian::docid did, const string &term) const
Virtual methods of Database::Internal.
string str(int value)
Convert int to std::string.
GlassTermListTable termlist_table
Table storing term lists.
Xapian::PositionIterator positionlist_begin() const
Return a PositionIterator for the current position.
Class for iterating over term positions.
bool at_end() const
Return true if the current position is past the last term in this list.
#define LOGCALL_CTOR(CATEGORY, CLASS, PARAMS)
Indicates an attempt to access a document not present in the database.
Xapian::termcount get_wdf() const
Return the wdf for the term at the current position.
DatabaseCorruptError indicates database corruption was detected.
void get_freqs(const string &term, Xapian::doccount *termfreq_ptr, Xapian::termcount *collfreq_ptr) const
Virtual methods of Database::Internal.
Xapian::termcount doclen
The length of document did.
bool get_exact_entry(const std::string &key, std::string &tag) const
Read an entry from the table, if and only if it is exactly that being asked for.
unsigned XAPIAN_DOCID_BASE_TYPE doccount
A count of documents.
std::string data
The tag value from the termlist table which holds the encoded termlist.
size_t shard_index
Which shard of a multidatabase this is from.
Collates statistics while calculating term weight in an ESet.
Pack types into strings and unpack them again.
bool unpack_uint(const char **p, const char *end, U *result)
Decode an unsigned integer from a string.
TermList * next()
Advance the current position to the next term in the termlist.
void accumulate_stats(Xapian::Internal::ExpandStats &stats) const
Collate weighting information for the current term.
Various assertion macros.
A TermList in a glass database.
unsigned XAPIAN_DOCID_BASE_TYPE docid
A unique identifier for a document.
Xapian::termcount get_unique_terms() const
Return the number of unique terms.
A smart pointer that uses intrusive reference counting.
virtual Xapian::termcount positionlist_count(Xapian::docid did, const string &term) const
Virtual methods of Database::Internal.
#define LOGCALL(CATEGORY, TYPE, FUNC, PARAMS)
Xapian::doccount get_termfreq() const
Return the term frequency for the term at the current position.