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49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
#pragma once
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#include <Core/Block.h>
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#include <Processors/ISource.h>
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#include <Core/ExternalResultDescription.h>
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namespace Poco
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{
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namespace MongoDB
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{
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class Connection;
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class Cursor;
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}
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}
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namespace DB
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{
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void authenticate(Poco::MongoDB::Connection & connection, const std::string & database, const std::string & user, const std::string & password);
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std::unique_ptr<Poco::MongoDB::Cursor> createCursor(const std::string & database, const std::string & collection, const Block & sample_block_to_select);
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/// Converts MongoDB Cursor to a stream of Blocks
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class MongoDBSource final : public ISource
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{
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public:
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MongoDBSource(
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std::shared_ptr<Poco::MongoDB::Connection> & connection_,
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std::unique_ptr<Poco::MongoDB::Cursor> cursor_,
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const Block & sample_block,
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UInt64 max_block_size_);
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~MongoDBSource() override;
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String getName() const override { return "MongoDB"; }
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private:
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Chunk generate() override;
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std::shared_ptr<Poco::MongoDB::Connection> connection;
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std::unique_ptr<Poco::MongoDB::Cursor> cursor;
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const UInt64 max_block_size;
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ExternalResultDescription description;
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bool all_read = false;
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};
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}
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