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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "utils.h"
#include "rank_program.h"
#include <vespa/eval/eval/value_codec.h>
#include <vector>
#include <cassert>
using vespalib::FeatureSet;
namespace search::fef {
feature_t
Utils::getScoreFeature(const RankProgram &rankProgram, uint32_t docid)
{
FeatureResolver resolver(rankProgram.get_seeds(false));
assert(resolver.num_features() == 1u);
assert(!resolver.is_object(0));
return resolver.resolve(0).as_number(docid);
}
vespalib::eval::Value::CREF
Utils::getObjectFeature(const RankProgram &rankProgram, uint32_t docid)
{
FeatureResolver resolver(rankProgram.get_seeds(false));
assert(resolver.num_features() == 1u);
assert(resolver.is_object(0));
return resolver.resolve(0).as_object(docid);
}
namespace {
std::map<vespalib::string, feature_t>
resolveFeatures(const FeatureResolver &resolver, uint32_t docid)
{
std::map<vespalib::string, feature_t> result;
size_t numFeatures = resolver.num_features();
for (size_t i = 0; i < numFeatures; ++i) {
const vespalib::string &name = resolver.name_of(i);
feature_t value = resolver.resolve(i).as_number(docid);
result.insert(std::make_pair(name, value));
}
return result;
}
}
std::map<vespalib::string, feature_t>
Utils::getSeedFeatures(const RankProgram &rankProgram, uint32_t docid)
{
FeatureResolver resolver(rankProgram.get_seeds());
return resolveFeatures(resolver, docid);
}
std::map<vespalib::string, feature_t>
Utils::getAllFeatures(const RankProgram &rankProgram, uint32_t docid)
{
FeatureResolver resolver(rankProgram.get_all_features());
return resolveFeatures(resolver, docid);
}
std::vector<vespalib::string>
Utils::extract_feature_names(const FeatureResolver& resolver, const StringStringMap& renames)
{
std::vector<vespalib::string> result;
result.reserve(resolver.num_features());
for (size_t i = 0; i < resolver.num_features(); ++i) {
vespalib::string name = resolver.name_of(i);
auto iter = renames.find(name);
if (iter != renames.end()) {
name = iter->second;
}
result.emplace_back(name);
}
return result;
}
void
Utils::extract_feature_values(const FeatureResolver& resolver, uint32_t docid, FeatureSet::Value* dst)
{
for (uint32_t i = 0; i < resolver.num_features(); ++i) {
if (resolver.is_object(i)) {
auto obj = resolver.resolve(i).as_object(docid);
if (!obj.get().type().is_double()) {
vespalib::nbostream buf;
encode_value(obj.get(), buf);
dst[i].set_data(vespalib::Memory(buf.peek(), buf.size()));
} else {
dst[i].set_double(obj.get().as_double());
}
} else {
dst[i].set_double(resolver.resolve(i).as_number(docid));
}
}
}
}
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