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