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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "queryterm.h"
#include "utils.h"
using search::feature_t;
using namespace search::fef;
namespace search::features {
QueryTerm
QueryTermFactory::create(const IQueryEnvironment & env, uint32_t termIdx, bool lookupConnectedness)
{
const ITermData *termData = env.getTerm(termIdx);
feature_t fallback = util::getSignificance(*termData);
feature_t significance = features::util::lookupSignificance(env, termIdx, fallback);
feature_t connectedness = 0;
if (lookupConnectedness) {
connectedness = util::lookupConnectedness(env, termIdx);
}
return QueryTerm(termData, significance, connectedness);
}
QueryTermHelper::QueryTermHelper(const IQueryEnvironment &env)
: _fallBack(),
_queryTerms(lookupQueryTerms(env))
{
if (_queryTerms == nullptr) {
_fallBack = createQueryTermvector(env);
_queryTerms = & _fallBack;
}
}
namespace {
using QueryTermVectorWrapper = AnyWrapper<QueryTermVector>;
const vespalib::string QUERY_TERMS_KEY("querytermhelper.queryterms");
}
const QueryTermVector &
QueryTermHelper::lookupAndStoreQueryTerms(const IQueryEnvironment &env, IObjectStore & store)
{
const Anything * obj = store.get(QUERY_TERMS_KEY);
if (obj == nullptr) {
store.add(QUERY_TERMS_KEY, std::make_unique<QueryTermVectorWrapper>(createQueryTermvector(env)));
obj = store.get(QUERY_TERMS_KEY);
}
return static_cast<const QueryTermVectorWrapper *>(obj)->getValue();
}
const QueryTermVector *
QueryTermHelper::lookupQueryTerms(const IQueryEnvironment & env)
{
const Anything * obj = env.getObjectStore().get(QUERY_TERMS_KEY);
return (obj != nullptr) ? & QueryTermVectorWrapper::getValue(*obj) : nullptr;
}
QueryTermVector
QueryTermHelper::createQueryTermvector(const IQueryEnvironment &env) {
QueryTermVector vector;
vector.reserve(env.getNumTerms());
for (size_t i(0); i < env.getNumTerms(); i++) {
vector.push_back(QueryTermFactory::create(env, i));
}
return vector;
}
}
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