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#pragma once
#include "clickhouse_config.h"
#if USE_MYSQL
#include <Storages/StorageProxy.h>
namespace DB
{
namespace ErrorCodes
{
extern const int NOT_IMPLEMENTED;
}
class StorageMaterializedMySQL final : public StorageProxy
{
public:
StorageMaterializedMySQL(const StoragePtr & nested_storage_, const IDatabase * database_);
String getName() const override { return "MaterializedMySQL"; }
bool needRewriteQueryWithFinal(const Names & column_names) const override;
void read(
QueryPlan & query_plan,
const Names & column_names,
const StorageSnapshotPtr & metadata_snapshot,
SelectQueryInfo & query_info,
ContextPtr context,
QueryProcessingStage::Enum processed_stage,
size_t max_block_size, size_t num_streams) override;
SinkToStoragePtr write(const ASTPtr &, const StorageMetadataPtr &, ContextPtr, bool) override { throwNotAllowed(); }
NamesAndTypesList getVirtuals() const override;
ColumnSizeByName getColumnSizes() const override;
StoragePtr getNested() const override { return nested_storage; }
void drop() override { nested_storage->drop(); }
bool supportsTrivialCountOptimization() const override { return false; }
IndexSizeByName getSecondaryIndexSizes() const override
{
return nested_storage->getSecondaryIndexSizes();
}
private:
[[noreturn]] static void throwNotAllowed()
{
throw Exception(ErrorCodes::NOT_IMPLEMENTED, "This method is not allowed for MaterializedMySQL");
}
StoragePtr nested_storage;
const IDatabase * database;
};
}
#endif
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