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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/searchcommon/attribute/iattributecontext.h>
#include <vespa/searchlib/attribute/iattributemanager.h>
#include <vespa/searchlib/fef/iindexenvironment.h>
#include <vespa/searchlib/fef/iqueryenvironment.h>
#include <vespa/searchlib/fef/location.h>
#include <vespa/searchlib/fef/properties.h>
#include "indexenvironment.h"
namespace streaming {
/**
* Implementation of the feature execution framework
* query environment API for the search visitor.
**/
class QueryEnvironment : public search::fef::IQueryEnvironment
{
private:
const IndexEnvironment &_indexEnv;
const search::fef::Properties &_properties;
search::attribute::IAttributeContext::UP _attrCtx;
std::vector<const search::fef::ITermData *> _queryTerms;
search::fef::Location _location;
public:
typedef std::unique_ptr<QueryEnvironment> UP;
QueryEnvironment(const vespalib::string & location,
const IndexEnvironment & indexEnv,
const search::fef::Properties & properties,
const search::IAttributeManager * attrMgr = nullptr);
~QueryEnvironment();
// inherit documentation
virtual const search::fef::Properties & getProperties() const override { return _properties; }
// inherit documentation
virtual uint32_t getNumTerms() const override { return _queryTerms.size(); }
// inherit documentation
virtual const search::fef::ITermData *getTerm(uint32_t idx) const override {
if (idx >= _queryTerms.size()) {
return nullptr;
}
return _queryTerms[idx];
}
// inherit documentation
virtual const search::fef::Location & getLocation() const override { return _location; }
std::vector<const search::fef::Location *> getAllLocations() const override {
std::vector<const search::fef::Location *> retval;
retval.push_back(&_location);
return retval;
}
// inherit documentation
virtual const search::attribute::IAttributeContext & getAttributeContext() const override { return *_attrCtx; }
double get_average_field_length(const vespalib::string &) const override { return 1.0; }
// inherit documentation
virtual const search::fef::IIndexEnvironment & getIndexEnvironment() const override { return _indexEnv; }
void addTerm(const search::fef::ITermData *term) { _queryTerms.push_back(term); }
};
} // namespace streaming
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