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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "chain.h"
#include <vespa/vespalib/util/stash.h>
#include <sstream>
namespace search::fef::test {
ChainExecutor::ChainExecutor() :
FeatureExecutor()
{
}
void
ChainExecutor::execute(uint32_t)
{
outputs().set_number(0, inputs().get_number(0));
}
ChainBlueprint::ChainBlueprint() :
Blueprint("chain")
{
}
bool
ChainBlueprint::setup(const IIndexEnvironment & indexEnv, const StringVector & params)
{
(void) indexEnv;
if (params.size() != 3) { // [type, children, value]
return false;
}
const std::string & type = params[0];
const std::string & children = params[1];
const std::string & value = params[2];
uint32_t numChildren;
std::istringstream iss(children);
iss >> std::dec >> numChildren;
std::ostringstream oss;
if (numChildren == 0) {
return false;
}
if (numChildren == 1) {
if (type == "basic") {
oss << "value(" << value << ")"; // value = input to value executor
defineInput(oss.str());
} else if (type == "cycle") {
oss << "chain(" << type << "," << value << "," << value << ")"; // value = where to insert the cycle
defineInput(oss.str());
} else {
return false;
}
} else {
oss << "chain(" << type << "," << (numChildren - 1) << "," << value << ")";
defineInput(oss.str());
}
describeOutput("out", "chain");
return true;
}
FeatureExecutor &
ChainBlueprint::createExecutor(const IQueryEnvironment &queryEnv, vespalib::Stash &stash) const
{
(void) queryEnv;
return stash.create<ChainExecutor>();
}
}
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