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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "fieldwriter.h"
#include "zcposocc.h"
#include "extposocc.h"
#include "pagedict4file.h"
#include <vespa/vespalib/util/error.h>
#include <filesystem>
#include <vespa/log/log.h>
LOG_SETUP(".diskindex.fieldwriter");
using search::index::FieldLengthInfo;
namespace search::diskindex {
using vespalib::getLastErrorString;
using common::FileHeaderContext;
FieldWriter::FieldWriter(uint32_t docIdLimit, uint64_t numWordIds, vespalib::stringref prefix)
: _dictFile(),
_posoccfile(),
_bvc(docIdLimit),
_bmapfile(BitVectorKeyScope::PERFIELD_WORDS),
_prefix(prefix),
_word(),
_numWordIds(numWordIds),
_compactWordNum(0),
_wordNum(noWordNum()),
_prevDocId(0),
_docIdLimit(docIdLimit)
{
}
FieldWriter::~FieldWriter() = default;
bool
FieldWriter::open(uint32_t minSkipDocs,
uint32_t minChunkDocs,
bool dynamicKPosOccFormat,
bool encode_interleaved_features,
const Schema &schema,
const uint32_t indexId,
const FieldLengthInfo &field_length_info,
const TuneFileSeqWrite &tuneFileWrite,
const FileHeaderContext &fileHeaderContext)
{
vespalib::string name = _prefix + "posocc.dat.compressed";
PostingListParams params;
PostingListParams featureParams;
PostingListParams countParams;
diskindex::setupDefaultPosOccParameters(&countParams, ¶ms, _numWordIds, _docIdLimit);
if (minSkipDocs != 0) {
countParams.set("minSkipDocs", minSkipDocs);
params.set("minSkipDocs", minSkipDocs);
}
if (minChunkDocs != 0) {
countParams.set("minChunkDocs", minChunkDocs);
params.set("minChunkDocs", minChunkDocs);
}
if (encode_interleaved_features) {
params.set("interleaved_features", encode_interleaved_features);
}
_dictFile = std::make_unique<PageDict4FileSeqWrite>();
_dictFile->setParams(countParams);
_posoccfile = makePosOccWrite(_dictFile.get(), dynamicKPosOccFormat, params, featureParams, schema, indexId, field_length_info);
vespalib::string cname = _prefix + "dictionary";
// Open output dictionary file
if (!_dictFile->open(cname, tuneFileWrite, fileHeaderContext)) {
LOG(error, "Could not open posocc count file %s for write: %s",
cname.c_str(), getLastErrorString().c_str());
return false;
}
// Open output posocc.dat file
if (!_posoccfile->open(name, tuneFileWrite, fileHeaderContext)) {
LOG(error, "Could not open posocc file %s for write: %s",
name.c_str(), getLastErrorString().c_str());
return false;
}
// Open output boolocc.bdat file
vespalib::string booloccbidxname = _prefix + "boolocc";
_bmapfile.open(booloccbidxname.c_str(), _docIdLimit, tuneFileWrite, fileHeaderContext);
return true;
}
void
FieldWriter::flush()
{
_posoccfile->flushWord();
PostingListCounts &counts = _posoccfile->getCounts();
if (counts._numDocs != 0) {
assert(_compactWordNum != 0);
_dictFile->writeWord(_word, counts);
// Write bitmap entries
if (_bvc.getCrossedBitVectorLimit()) {
_bmapfile.addWordSingle(_compactWordNum, _bvc.getBitVector());
}
_bvc.clear();
counts.clear();
} else {
assert(counts._bitLength == 0);
assert(_bvc.empty());
assert(_compactWordNum == 0);
}
}
void
FieldWriter::newWord(uint64_t wordNum, vespalib::stringref word)
{
assert(wordNum <= _numWordIds);
assert(wordNum != noWordNum());
assert(wordNum > _wordNum);
flush();
_wordNum = wordNum;
++_compactWordNum;
_word = word;
_prevDocId = 0;
}
void
FieldWriter::newWord(vespalib::stringref word)
{
newWord(_wordNum + 1, word);
}
bool
FieldWriter::close()
{
bool ret = true;
flush();
_wordNum = noWordNum();
if (_posoccfile) {
bool closeRes = _posoccfile->close();
if (!closeRes) {
LOG(error, "Could not close posocc file for write");
ret = false;
}
_posoccfile.reset();
}
if (_dictFile) {
bool closeRes = _dictFile->close();
if (!closeRes) {
LOG(error, "Could not close posocc count file for write");
ret = false;
}
_dictFile.reset();
}
_bmapfile.close();
return ret;
}
void
FieldWriter::getFeatureParams(PostingListParams ¶ms)
{
_posoccfile->getFeatureParams(params);
}
static const char *termOccNames[] =
{
"boolocc.bdat",
"boolocc.bidx",
"boolocc.idx",
"posocc.ccnt",
"posocc.cnt",
"posocc.dat.compressed",
"dictionary.pdat",
"dictionary.spdat",
"dictionary.ssdat",
"dictionary.words",
nullptr,
};
void
FieldWriter::remove(const vespalib::string &prefix)
{
for (const char **j = termOccNames; *j != nullptr; ++j) {
vespalib::string tmpName = prefix + *j;
std::filesystem::remove(std::filesystem::path(tmpName));
}
}
}
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