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61 lines
1.9 KiB
C++
61 lines
1.9 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 <Parsers/ASTQueryWithTableAndOutput.h>
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#include <Common/quoteString.h>
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namespace DB
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{
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class ASTWatchQuery : public ASTQueryWithTableAndOutput
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{
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public:
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ASTPtr limit_length;
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bool is_watch_events;
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ASTWatchQuery() = default;
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String getID(char) const override { return "WatchQuery_" + database + "_" + table; }
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ASTPtr clone() const override
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{
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std::shared_ptr<ASTWatchQuery> res = std::make_shared<ASTWatchQuery>(*this);
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res->children.clear();
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cloneOutputOptions(*res);
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return res;
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}
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protected:
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void formatQueryImpl(const FormatSettings & s, FormatState & state, FormatStateStacked frame) const override
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{
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std::string indent_str = s.one_line ? "" : std::string(4 * frame.indent, ' ');
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s.ostr << (s.hilite ? hilite_keyword : "") << "WATCH " << (s.hilite ? hilite_none : "")
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<< (!database.empty() ? backQuoteIfNeed(database) + "." : "") << backQuoteIfNeed(table);
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if (is_watch_events)
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{
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s.ostr << " " << (s.hilite ? hilite_keyword : "") << "EVENTS" << (s.hilite ? hilite_none : "");
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}
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if (limit_length)
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{
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s.ostr << (s.hilite ? hilite_keyword : "") << s.nl_or_ws << indent_str << "LIMIT " << (s.hilite ? hilite_none : "");
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limit_length->formatImpl(s, state, frame);
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}
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}
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};
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}
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