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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/searchlib/expression/unaryfunctionnode.h>
#include <vespa/searchlib/common/sortspec.h>
#include <vespa/searchlib/expression/stringresultnode.h>
#include <vespa/searchlib/expression/resultvector.h>
namespace search::expression {
class UcaFunctionNode : public UnaryFunctionNode
{
public:
DECLARE_EXPRESSIONNODE(UcaFunctionNode);
DECLARE_NBO_SERIALIZE;
UcaFunctionNode();
~UcaFunctionNode() override;
UcaFunctionNode(ExpressionNode::UP arg, const vespalib::string & locale, const vespalib::string & strength);
UcaFunctionNode(const UcaFunctionNode & rhs);
UcaFunctionNode & operator = (const UcaFunctionNode & rhs);
private:
bool onExecute() const override;
void onPrepareResult() override;
class Handler {
public:
Handler(const UcaFunctionNode & uca);
virtual ~Handler() = default;
virtual void handle(const ResultNode & arg) = 0;
protected:
void handleOne(const ResultNode & arg, RawResultNode & result) const;
private:
const common::BlobConverter & _converter;
char _backingBuffer[32];
vespalib::BufferRef _buffer;
};
class SingleValueHandler : public Handler {
public:
SingleValueHandler(UcaFunctionNode & uca) : Handler(uca), _result(static_cast<RawResultNode &>(uca.updateResult())) { }
void handle(const ResultNode & arg) override;
private:
RawResultNode & _result;
};
class MultiValueHandler : public Handler {
public:
MultiValueHandler(UcaFunctionNode & uca) : Handler(uca), _result(static_cast<RawResultNodeVector &>(uca.updateResult())) { }
void handle(const ResultNode & arg) override;
private:
RawResultNodeVector & _result;
};
vespalib::string _locale;
vespalib::string _strength;
common::BlobConverter::SP _collator;
std::unique_ptr<Handler> _handler;
};
}
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