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66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
/* Copyright (c) 2018 BlackBerry Limited
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#pragma once
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#include <optional>
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#include <Parsers/ASTAlterQuery.h>
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#include <Storages/LiveView/StorageLiveView.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 UNKNOWN_STORAGE;
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}
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struct LiveViewCommand
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{
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enum Type
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{
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REFRESH
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};
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Type type;
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ASTPtr values;
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static LiveViewCommand refresh(const ASTPtr & values)
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{
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LiveViewCommand res;
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res.type = REFRESH;
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res.values = values;
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return res;
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}
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static std::optional<LiveViewCommand> parse(ASTAlterCommand * command)
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{
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if (command->type == ASTAlterCommand::LIVE_VIEW_REFRESH)
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return refresh(command->values);
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return {};
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}
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};
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class LiveViewCommands : public std::vector<LiveViewCommand>
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{
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public:
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void validate(const IStorage & table)
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{
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if (!empty() && !dynamic_cast<const StorageLiveView *>(&table))
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throw Exception("Wrong storage type. Must be StorageLiveView", DB::ErrorCodes::UNKNOWN_STORAGE);
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}
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};
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}
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