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49 lines
1.1 KiB
C++
49 lines
1.1 KiB
C++
#pragma once
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#include "ConnectionParameters.h"
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#include <Client/Connection.h>
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#include <IO/ConnectionTimeouts.h>
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#include <common/LineReader.h>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int UNKNOWN_PACKET_FROM_SERVER;
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}
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class Suggest : public LineReader::Suggest, boost::noncopyable
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{
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public:
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static Suggest * instance()
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{
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static Suggest instance;
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return &instance;
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}
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void load(const ConnectionParameters & connection_parameters, size_t suggestion_limit);
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/// Older server versions cannot execute the query above.
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static constexpr int MIN_SERVER_REVISION = 54406;
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private:
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Suggest();
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~Suggest()
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{
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if (loading_thread.joinable())
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loading_thread.join();
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}
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void loadImpl(Connection & connection, const ConnectionTimeouts & timeouts, size_t suggestion_limit);
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void fetch(Connection & connection, const ConnectionTimeouts & timeouts, const std::string & query);
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void fillWordsFromBlock(const Block & block);
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/// Words are fetched asynchronously.
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std::thread loading_thread;
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};
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}
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