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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "sum.h"
#include <vespa/searchlib/fef/featurenamebuilder.h>
#include <vespa/vespalib/util/stash.h>
namespace search::fef::test {
void
SumExecutor::execute(uint32_t)
{
feature_t sum = 0.0f;
for (uint32_t i = 0; i < inputs().size(); ++i) {
sum += inputs().get_number(i);
}
outputs().set_number(0, sum);
}
SumBlueprint::SumBlueprint() :
Blueprint("mysum")
{
}
void
SumBlueprint::visitDumpFeatures(const IIndexEnvironment & indexEnv, IDumpFeatureVisitor & visitor) const
{
(void) indexEnv;
#if 1
(void) visitor;
#else
// Use the feature name builder to make sure that the naming of features are quoted correctly.
using FNB = FeatureNameBuilder;
// This blueprint dumps 2 ranking features. This is a very tricky feature in that it's dependencies
// are given by its parameters, so the definition of features implicitly declares this tree. This
// blueprint can actually produce any number of features, but only the following 2 are ever dumped.
// The first feature this produces is "sum(value(4),value(16))", quoted correctly by the feature name
// builder. The feature "value" simply returns the value of its single parameter, so this feature will
// always produce the output "20".
visitor.visitDumpFeature(FNB().baseName("sum").parameter("value(4)").parameter("value(16)").buildName());
// The second feature is "sum(double(value(8)),double(value(32)))", again quoted by the feature name
// builder. The feature "double" returns twice the value of its single input. This means that this
// feature will always produce the output "80" (= 8*2 + 32*2).
std::string d1 = FNB().baseName("double").parameter("value(8)").buildName();
std::string d2 = FNB().baseName("double").parameter("value(32)").buildName();
visitor.visitDumpFeature(FNB().baseName("sum").parameter(d1).parameter(d2).buildName());
#endif
}
bool
SumBlueprint::setup(const IIndexEnvironment & indexEnv, const StringVector & params)
{
(void) indexEnv;
// This blueprints expects all parameters to be complete feature names, so depend on these.
for (uint32_t i = 0; i < params.size(); ++i) {
defineInput(params[i]);
}
// Produce only a single output named "out".
describeOutput("out", "The sum of the values of all parameter features.");
return true;
}
FeatureExecutor &
SumBlueprint::createExecutor(const IQueryEnvironment &queryEnv, vespalib::Stash &stash) const
{
(void) queryEnv;
return stash.create<SumExecutor>();
}
}
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