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55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
#pragma once
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#if !defined(ARCADIA_BUILD)
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#include "config_core.h"
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#endif
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#if USE_MYSQL
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#include <Storages/StorageProxy.h>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int NOT_IMPLEMENTED;
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}
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class StorageMaterializeMySQL final : public shared_ptr_helper<StorageMaterializeMySQL>, public StorageProxy
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{
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friend struct shared_ptr_helper<StorageMaterializeMySQL>;
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public:
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String getName() const override { return "MaterializeMySQL"; }
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StorageMaterializeMySQL(const StoragePtr & nested_storage_, const IDatabase * database_);
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bool needRewriteQueryWithFinal(const Names & column_names) const override;
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Pipe read(
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const Names & column_names, const StorageMetadataPtr & metadata_snapshot, SelectQueryInfo & query_info,
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ContextPtr context, QueryProcessingStage::Enum processed_stage, size_t max_block_size, unsigned num_streams) override;
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BlockOutputStreamPtr write(const ASTPtr &, const StorageMetadataPtr &, ContextPtr) override { throwNotAllowed(); }
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NamesAndTypesList getVirtuals() const override;
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ColumnSizeByName getColumnSizes() const override;
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StoragePtr getNested() const override { return nested_storage; }
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void drop() override { nested_storage->drop(); }
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private:
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[[noreturn]] void throwNotAllowed() const
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{
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throw Exception("This method is not allowed for MaterializeMySQL", ErrorCodes::NOT_IMPLEMENTED);
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}
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StoragePtr nested_storage;
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const IDatabase * database;
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};
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}
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#endif
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