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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "docsum_matcher.h"
#include "match_tools.h"
#include "search_session.h"
#include "extract_features.h"
#include <vespa/eval/eval/value_codec.h>
#include <vespa/vespalib/objects/nbostream.h>
#include <vespa/searchcommon/attribute/i_search_context.h>
#include <vespa/searchlib/queryeval/blueprint.h>
#include <vespa/searchlib/queryeval/intermediate_blueprints.h>
#include <vespa/searchlib/queryeval/same_element_blueprint.h>
#include <vespa/searchlib/queryeval/same_element_search.h>
#include <vespa/searchlib/queryeval/matching_elements_search.h>
#include <vespa/searchlib/fef/feature_resolver.h>
#include <vespa/searchlib/fef/rank_program.h>
#include <vespa/log/log.h>
LOG_SETUP(".proton.matching.docsum_matcher");
using search::MatchingElements;
using search::MatchingElementsFields;
using search::fef::FeatureResolver;
using search::fef::RankProgram;
using search::queryeval::AndNotBlueprint;
using search::queryeval::Blueprint;
using search::queryeval::IntermediateBlueprint;
using search::queryeval::MatchingElementsSearch;
using search::queryeval::SameElementBlueprint;
using search::queryeval::SearchIterator;
using vespalib::FeatureSet;
using AttrSearchCtx = search::attribute::ISearchContext;
namespace proton::matching {
namespace {
FeatureSet::UP
get_feature_set(const MatchToolsFactory &mtf,
const std::vector<uint32_t> &docs,
bool summaryFeatures)
{
MatchTools::UP matchTools = mtf.createMatchTools();
if (summaryFeatures) {
matchTools->setup_summary();
} else {
matchTools->setup_dump();
}
auto retval = ExtractFeatures::get_feature_set(matchTools->search(), matchTools->rank_program(), docs,
matchTools->getDoom(), mtf.get_feature_rename_map());
if (auto onSummaryTask = mtf.createOnSummaryTask()) {
onSummaryTask->run(docs);
}
return retval;
}
template<typename T>
const T *as(const Blueprint &bp) { return dynamic_cast<const T *>(&bp); }
void find_matching_elements(const std::vector<uint32_t> &docs, const SameElementBlueprint &same_element, MatchingElements &result) {
search::fef::TermFieldMatchData dummy_tfmd;
auto search = same_element.create_same_element_search(dummy_tfmd, false);
search->initRange(docs.front(), docs.back()+1);
std::vector<uint32_t> matches;
for (uint32_t i = 0; i < docs.size(); ++i) {
search->find_matching_elements(docs[i], matches);
if (!matches.empty()) {
result.add_matching_elements(docs[i], same_element.field_name(), matches);
matches.clear();
}
}
}
void find_matching_elements(const std::vector<uint32_t> &docs, MatchingElementsSearch &search, MatchingElements &result) {
search.initRange(docs.front(), docs.back() + 1);
for (uint32_t i = 0; i < docs.size(); ++i) {
search.find_matching_elements(docs[i], result);
}
}
void find_matching_elements(const std::vector<uint32_t> &docs, const vespalib::string &field_name, const AttrSearchCtx &attr_ctx, MatchingElements &result) {
int32_t weight = 0;
std::vector<uint32_t> matches;
for (uint32_t i = 0; i < docs.size(); ++i) {
for (int32_t id = attr_ctx.find(docs[i], 0, weight); id >= 0; id = attr_ctx.find(docs[i], id+1, weight)) {
matches.push_back(id);
}
if (!matches.empty()) {
result.add_matching_elements(docs[i], field_name, matches);
matches.clear();
}
}
}
void find_matching_elements(const MatchingElementsFields &fields, const std::vector<uint32_t> &docs, const Blueprint &bp, MatchingElements &result) {
if (auto same_element = as<SameElementBlueprint>(bp)) {
if (fields.has_field(same_element->field_name())) {
find_matching_elements(docs, *same_element, result);
}
} else if (auto matching_elements_search = bp.create_matching_elements_search(fields)) {
find_matching_elements(docs, *matching_elements_search, result);
} else if (const AttrSearchCtx *attr_ctx = bp.get_attribute_search_context()) {
if (fields.has_struct_field(attr_ctx->attributeName())) {
find_matching_elements(docs, fields.get_enclosing_field(attr_ctx->attributeName()), *attr_ctx, result);
} else if (fields.has_field(attr_ctx->attributeName())) {
find_matching_elements(docs, attr_ctx->attributeName(), *attr_ctx, result);
}
} else if (auto and_not = as<AndNotBlueprint>(bp)) {
find_matching_elements(fields, docs, and_not->getChild(0), result);
} else if (auto intermediate = as<IntermediateBlueprint>(bp)) {
for (size_t i = 0; i < intermediate->childCnt(); ++i) {
find_matching_elements(fields, docs, intermediate->getChild(i), result);
}
}
}
}
DocsumMatcher::DocsumMatcher()
: _from_session(),
_from_mtf(),
_mtf(nullptr),
_docs()
{
}
DocsumMatcher::DocsumMatcher(std::shared_ptr<SearchSession> session, std::vector<uint32_t> docs)
: _from_session(std::move(session)),
_from_mtf(),
_mtf(&_from_session->getMatchToolsFactory()),
_docs(std::move(docs))
{
}
DocsumMatcher::DocsumMatcher(std::unique_ptr<MatchToolsFactory> mtf, std::vector<uint32_t> docs)
: _from_session(),
_from_mtf(std::move(mtf)),
_mtf(_from_mtf.get()),
_docs(std::move(docs))
{
}
DocsumMatcher::~DocsumMatcher() {
if (_from_session) {
_from_session->releaseEnumGuards();
}
}
FeatureSet::UP
DocsumMatcher::get_summary_features() const
{
if (!_mtf) {
return std::make_unique<FeatureSet>();
}
return get_feature_set(*_mtf, _docs, true);
}
FeatureSet::UP
DocsumMatcher::get_rank_features() const
{
if (!_mtf) {
return std::make_unique<FeatureSet>();
}
return get_feature_set(*_mtf, _docs, false);
}
MatchingElements::UP
DocsumMatcher::get_matching_elements(const MatchingElementsFields &fields) const
{
auto result = std::make_unique<MatchingElements>();
if (_mtf && !fields.empty()) {
if (const Blueprint *root = _mtf->query().peekRoot()) {
find_matching_elements(fields, _docs, *root, *result);
}
}
return result;
}
}
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