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#pragma once
#include <BridgeHelper/ExternalDictionaryLibraryBridgeHelper.h>
#include <Common/LocalDateTime.h>
#include <Core/UUID.h>
#include "DictionaryStructure.h"
#include <Core/ExternalResultDescription.h>
#include "IDictionarySource.h"
#include <Interpreters/Context_fwd.h>
namespace Poco
{
class Logger;
namespace Util
{
class AbstractConfiguration;
}
}
namespace DB
{
namespace ErrorCodes
{
extern const int NOT_IMPLEMENTED;
}
class CStringsHolder;
using ExternalDictionaryLibraryBridgeHelperPtr = std::shared_ptr<ExternalDictionaryLibraryBridgeHelper>;
class LibraryDictionarySource final : public IDictionarySource
{
public:
LibraryDictionarySource(
const DictionaryStructure & dict_struct_,
const Poco::Util::AbstractConfiguration & config,
const std::string & config_prefix_,
Block & sample_block_,
ContextPtr context_,
bool created_from_ddl);
LibraryDictionarySource(const LibraryDictionarySource & other);
LibraryDictionarySource & operator=(const LibraryDictionarySource &) = delete;
~LibraryDictionarySource() override;
QueryPipeline loadAll() override;
QueryPipeline loadUpdatedAll() override
{
throw Exception(ErrorCodes::NOT_IMPLEMENTED, "Method loadUpdatedAll is unsupported for LibraryDictionarySource");
}
QueryPipeline loadIds(const std::vector<UInt64> & ids) override;
QueryPipeline loadKeys(const Columns & key_columns, const std::vector<std::size_t> & requested_rows) override;
bool isModified() const override;
bool supportsSelectiveLoad() const override;
///Not yet supported
bool hasUpdateField() const override { return false; }
DictionarySourcePtr clone() const override;
std::string toString() const override;
private:
String getDictAttributesString();
static String getLibrarySettingsString(const Poco::Util::AbstractConfiguration & config, const std::string & config_root);
static Field getDictID() { return UUIDHelpers::generateV4(); }
Poco::Logger * log;
const DictionaryStructure dict_struct;
const std::string config_prefix;
std::string path;
const Field dictionary_id;
Block sample_block;
ContextPtr context;
ExternalDictionaryLibraryBridgeHelperPtr bridge_helper;
ExternalResultDescription description;
};
}
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