mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-19 14:11:58 +00:00
95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
#pragma once
|
|
|
|
#include <Common/config.h>
|
|
#if USE_POCO_MONGODB
|
|
|
|
# include "DictionaryStructure.h"
|
|
# include "IDictionarySource.h"
|
|
|
|
namespace Poco
|
|
{
|
|
namespace Util
|
|
{
|
|
class AbstractConfiguration;
|
|
}
|
|
|
|
namespace MongoDB
|
|
{
|
|
class Connection;
|
|
}
|
|
}
|
|
|
|
|
|
namespace DB
|
|
{
|
|
/// Allows loading dictionaries from a MongoDB collection
|
|
class MongoDBDictionarySource final : public IDictionarySource
|
|
{
|
|
MongoDBDictionarySource(
|
|
const DictionaryStructure & dict_struct,
|
|
const std::string & host,
|
|
UInt16 port,
|
|
const std::string & user,
|
|
const std::string & password,
|
|
const std::string & method,
|
|
const std::string & db,
|
|
const std::string & collection,
|
|
const Block & sample_block);
|
|
|
|
public:
|
|
MongoDBDictionarySource(
|
|
const DictionaryStructure & dict_struct,
|
|
const Poco::Util::AbstractConfiguration & config,
|
|
const std::string & config_prefix,
|
|
Block & sample_block);
|
|
|
|
MongoDBDictionarySource(const MongoDBDictionarySource & other);
|
|
|
|
~MongoDBDictionarySource() override;
|
|
|
|
BlockInputStreamPtr loadAll() override;
|
|
|
|
BlockInputStreamPtr loadUpdatedAll() override
|
|
{
|
|
throw Exception{"Method loadUpdatedAll is unsupported for MongoDBDictionarySource", ErrorCodes::NOT_IMPLEMENTED};
|
|
}
|
|
|
|
bool supportsSelectiveLoad() const override { return true; }
|
|
|
|
BlockInputStreamPtr loadIds(const std::vector<UInt64> & ids) override;
|
|
|
|
BlockInputStreamPtr loadKeys(const Columns & key_columns, const std::vector<size_t> & requested_rows) override;
|
|
|
|
/// @todo: for MongoDB, modification date can somehow be determined from the `_id` object field
|
|
bool isModified() const override { return true; }
|
|
|
|
///Not yet supported
|
|
bool hasUpdateField() const override { return false; }
|
|
|
|
DictionarySourcePtr clone() const override { return std::make_unique<MongoDBDictionarySource>(*this); }
|
|
|
|
std::string toString() const override;
|
|
|
|
private:
|
|
const DictionaryStructure dict_struct;
|
|
const std::string host;
|
|
const UInt16 port;
|
|
const std::string user;
|
|
const std::string password;
|
|
const std::string method;
|
|
const std::string db;
|
|
const std::string collection;
|
|
Block sample_block;
|
|
|
|
std::shared_ptr<Poco::MongoDB::Connection> connection;
|
|
};
|
|
|
|
}
|
|
#endif
|
|
|
|
/*namespace DB
|
|
{
|
|
class DictionarySourceFactory;
|
|
void registerDictionarySourceMongoDB(DictionarySourceFactory & factory);
|
|
}*/
|