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https://github.com/ClickHouse/ClickHouse.git
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51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
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/* 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 <Core/QueryProcessingStage.h>
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#include <DataStreams/BlockIO.h>
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#include <DataStreams/IBlockInputStream.h>
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#include <Parsers/IAST_fwd.h>
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#include <Interpreters/IInterpreter.h>
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#include <Storages/SelectQueryInfo.h>
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#include <Storages/IStorage.h>
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#include <Interpreters/Context.h>
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namespace DB
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{
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class IAST;
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using ASTPtr = std::shared_ptr<IAST>;
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using StoragePtr = std::shared_ptr<IStorage>;
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class InterpreterWatchQuery : public IInterpreter
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{
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public:
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InterpreterWatchQuery(const ASTPtr & query_ptr_, Context & context_)
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: query_ptr(query_ptr_), context(context_) {}
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BlockIO execute() override;
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private:
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ASTPtr query_ptr;
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Context & context;
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BlockInputStreamPtr executeImpl();
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/// Table from where to read data, if not subquery.
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StoragePtr storage;
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/// Streams of read data
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BlockInputStreams streams;
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};
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}
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