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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "search_context.h"
#include "documentmetastore.h"
#include <vespa/searchlib/attribute/attributeiterators.h>
#include <vespa/searchlib/query/query_term_simple.h>
#include <vespa/vespalib/util/exceptions.h>
using document::GlobalId;
using search::AttributeIteratorBase;
using search::AttributeVector;
using search::QueryTermSimple;
using search::fef::TermFieldMatchData;
using search::queryeval::SearchIterator;
namespace proton::documentmetastore {
namespace {
class GidAllSearchIterator : public AttributeIteratorBase
{
private:
void
doSeek(uint32_t docId) override
{
if (_store.validLidFast(docId)) {
setDocId(docId);
}
}
void
doUnpack(uint32_t docId) override
{
_matchData->reset(docId);
}
protected:
const DocumentMetaStore & _store;
public:
GidAllSearchIterator(const search::attribute::ISearchContext &baseSearchCtx,
TermFieldMatchData *matchData, const DocumentMetaStore &store)
: AttributeIteratorBase(baseSearchCtx, matchData),
_store(store)
{
}
};
class GidStrictAllSearchIterator : public GidAllSearchIterator
{
private:
uint32_t _numDocs;
virtual void
doSeek(uint32_t docId) override
{
if (_store.validLidFast(docId)) {
setDocId(docId);
} else {
for (docId++; docId < _numDocs && !_store.validLidFast(docId); docId++);
if (docId < _numDocs) {
setDocId(docId);
} else {
setAtEnd();
}
}
}
public:
GidStrictAllSearchIterator(const search::attribute::ISearchContext &baseSearchCtx,
TermFieldMatchData *matchData,
const DocumentMetaStore &store)
: GidAllSearchIterator(baseSearchCtx, matchData, store),
_numDocs(store.getNumDocs())
{
}
};
class GidSearchIterator : public GidAllSearchIterator
{
private:
const GlobalId & _gid;
void
doSeek(uint32_t docId) override
{
AttributeVector::DocId lid = 0;
if (_store.getLid(_gid, lid) && (lid >= docId)) {
setDocId(lid);
} else {
setAtEnd();
}
}
public:
GidSearchIterator(const search::attribute::ISearchContext &baseSearchCtx,
TermFieldMatchData *matchData, const DocumentMetaStore &store, const GlobalId &gid)
: GidAllSearchIterator(baseSearchCtx, matchData, store),
_gid(gid)
{
}
};
}
int32_t
SearchContext::onFind(DocId, int32_t, int32_t &) const
{
throw vespalib::IllegalStateException("The function is not implemented for documentmetastore::SearchContext");
}
int32_t
SearchContext::onFind(DocId, int32_t ) const
{
throw vespalib::IllegalStateException("The function is not implemented for documentmetastore::SearchContext");
}
unsigned int
SearchContext::approximateHits() const
{
return _isWord ? 1 : search::attribute::SearchContext::approximateHits();
}
SearchIterator::UP
SearchContext::createIterator(TermFieldMatchData *matchData, bool strict)
{
return _isWord
? std::make_unique<GidSearchIterator>(*this, matchData, getStore(), _gid)
: strict
? std::make_unique<GidStrictAllSearchIterator>(*this, matchData, getStore())
: std::make_unique<GidAllSearchIterator>(*this, matchData, getStore());
}
const DocumentMetaStore &
SearchContext::getStore() const
{
return static_cast<const DocumentMetaStore &>(attribute());
}
SearchContext::SearchContext(QueryTermSimple::UP qTerm, const DocumentMetaStore &toBeSearched)
: search::attribute::SearchContext(toBeSearched),
_isWord(qTerm->isWord()),
_docid_limit(toBeSearched.getCommittedDocIdLimit())
{
}
uint32_t
SearchContext::get_committed_docid_limit() const noexcept
{
return _docid_limit;
}
}
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