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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "termdistancefeature.h"
#include "valuefeature.h"
#include "utils.h"
#include <vespa/searchlib/fef/fieldinfo.h>
#include <vespa/searchlib/fef/properties.h>
#include <vespa/vespalib/util/stash.h>
using namespace search::fef;
namespace search::features {
TermDistanceExecutor::TermDistanceExecutor(const IQueryEnvironment & env,
const TermDistanceParams & params) :
FeatureExecutor(),
_termA(env.getTerm(params.termX)),
_termB(env.getTerm(params.termY)),
_md(nullptr)
{
_termA.fieldHandle(util::getTermFieldData(env, params.termX, params.fieldId));
_termB.fieldHandle(util::getTermFieldData(env, params.termY, params.fieldId));
}
bool TermDistanceExecutor::valid() const
{
return ((_termA.termData() != 0) && (_termB.termData() != 0) &&
(_termA.fieldHandle() != IllegalHandle) && (_termB.fieldHandle() != IllegalHandle));
}
void
TermDistanceExecutor::execute(uint32_t docId)
{
TermDistanceCalculator::Result result;
TermDistanceCalculator::run(_termA, _termB, *_md, docId, result);
outputs().set_number(0, result.forwardDist);
outputs().set_number(1, result.forwardTermPos);
outputs().set_number(2, result.reverseDist);
outputs().set_number(3, result.reverseTermPos);
}
void
TermDistanceExecutor::handle_bind_match_data(const fef::MatchData &md)
{
_md = &md;
}
TermDistanceBlueprint::TermDistanceBlueprint() :
Blueprint("termDistance"),
_params()
{
}
void
TermDistanceBlueprint::visitDumpFeatures(const IIndexEnvironment &,
IDumpFeatureVisitor &) const
{
}
Blueprint::UP
TermDistanceBlueprint::createInstance() const
{
return std::make_unique<TermDistanceBlueprint>();
}
bool
TermDistanceBlueprint::setup(const IIndexEnvironment &,
const ParameterList & params)
{
_params.fieldId = params[0].asField()->id();
_params.termX = params[1].asInteger();
_params.termY = params[2].asInteger();
describeOutput("forward", "the min distance between term X and term Y in the field");
describeOutput("forwardTermPosition", "the position of term X for the forward distance");
describeOutput("reverse", "the min distance between term Y and term X in the field");
describeOutput("reverseTermPosition", "the position of term Y for the reverse distance");
return true;
}
FeatureExecutor &
TermDistanceBlueprint::createExecutor(const IQueryEnvironment &env, vespalib::Stash &stash) const
{
TermDistanceExecutor &tde(stash.create<TermDistanceExecutor>(env, _params));
if (tde.valid()) {
return tde;
} else {
TermDistanceCalculator::Result r;
std::vector<feature_t> values(4);
values[0] = r.forwardDist;
values[1] = r.forwardTermPos;
values[2] = r.reverseDist;
values[3] = r.reverseTermPos;
return stash.create<ValueExecutor>(values);
}
}
}
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