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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/fastos/fastos.h>
#include <vespa/log/log.h>
#include <vespa/vespalib/objects/nbostream.h>
#include "fieldwriter.h"
#include "zcposocc.h"
#include "extposocc.h"
#include <vespa/vespalib/util/error.h>
#include "pagedict4file.h"
LOG_SETUP(".diskindex.fieldwriter");
namespace search
{
namespace diskindex
{
using vespalib::nbostream;
using vespalib::getLastErrorString;
using common::FileHeaderContext;
FieldWriter::FieldWriter(uint32_t docIdLimit,
uint64_t numWordIds)
: _wordNum(noWordNum()),
_prevDocId(0),
_dictFile(),
_posoccfile(),
_bvc(docIdLimit),
_bmapfile(BitVectorKeyScope::PERFIELD_WORDS),
_docIdLimit(docIdLimit),
_numWordIds(numWordIds),
_prefix(),
_compactWordNum(0),
_word()
{
}
void
FieldWriter::earlyOpen(const vespalib::string &prefix,
uint32_t minSkipDocs,
uint32_t minChunkDocs,
bool dynamicKPosOccFormat,
const Schema &schema,
const uint32_t indexId,
const TuneFileSeqWrite &tuneFileWrite)
{
_prefix = prefix;
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);
}
_dictFile.reset(new PageDict4FileSeqWrite);
_dictFile->setParams(countParams);
_posoccfile.reset(diskindex::makePosOccWrite(name,
_dictFile.get(),
dynamicKPosOccFormat,
params,
featureParams,
schema,
indexId,
tuneFileWrite));
}
bool
FieldWriter::lateOpen(const TuneFileSeqWrite &tuneFileWrite,
const FileHeaderContext &fileHeaderContext)
{
vespalib::string cname = _prefix + "dictionary";
vespalib::string name = _prefix + "posocc.dat.compressed";
// 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(void)
{
_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, const vespalib::stringref &word)
{
assert(wordNum <= _numWordIds);
assert(wordNum != noWordNum());
assert(wordNum > _wordNum);
flush();
_wordNum = wordNum;
++_compactWordNum;
_word = word;
_prevDocId = 0;
}
void
FieldWriter::newWord(const vespalib::stringref &word)
{
newWord(_wordNum + 1, word);
}
bool
FieldWriter::close(void)
{
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::checkPointWrite(nbostream &out)
{
out << _wordNum << _prevDocId;
out << _docIdLimit << _numWordIds;
out << _compactWordNum << _word;
_posoccfile->checkPointWrite(out);
_dictFile->checkPointWrite(out);
_bvc.checkPointWrite(out);
_bmapfile.checkPointWrite(out);
}
void
FieldWriter::checkPointRead(nbostream &in)
{
in >> _wordNum >> _prevDocId;
uint32_t checkDocIdLimit = 0;
uint64_t checkNumWordIds = 0;
in >> checkDocIdLimit >> checkNumWordIds;
assert(checkDocIdLimit == _docIdLimit);
assert(checkNumWordIds == _numWordIds);
in >> _compactWordNum >> _word;
_posoccfile->checkPointRead(in);
_dictFile->checkPointRead(in);
_bvc.checkPointRead(in);
_bmapfile.checkPointRead(in);
}
void
FieldWriter::setFeatureParams(const PostingListParams ¶ms)
{
_posoccfile->setFeatureParams(params);
}
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",
NULL,
};
void
FieldWriter::remove(const vespalib::string &prefix)
{
for (const char **j = termOccNames; *j != NULL; ++j) {
vespalib::string tmpName = prefix + *j;
FastOS_File::Delete(tmpName.c_str());
}
}
} // namespace diskindex
} // namespace search
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