1 | /* Copyright (c) 2018 BlackBerry Limited |
---|---|
2 | |
3 | Licensed under the Apache License, Version 2.0 (the "License"); |
4 | you may not use this file except in compliance with the License. |
5 | You may obtain a copy of the License at |
6 | http://www.apache.org/licenses/LICENSE-2.0 |
7 | Unless required by applicable law or agreed to in writing, software |
8 | distributed under the License is distributed on an "AS IS" BASIS, |
9 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
10 | See the License for the specific language governing permissions and |
11 | limitations under the License. */ |
12 | #pragma once |
13 | |
14 | #include <Parsers/ASTQueryWithTableAndOutput.h> |
15 | #include <Common/quoteString.h> |
16 | |
17 | |
18 | namespace DB |
19 | { |
20 | |
21 | class ASTWatchQuery : public ASTQueryWithTableAndOutput |
22 | { |
23 | |
24 | public: |
25 | ASTPtr limit_length; |
26 | bool is_watch_events; |
27 | |
28 | ASTWatchQuery() = default; |
29 | String getID(char) const override { return "WatchQuery_"+ database + "_"+ table; } |
30 | |
31 | ASTPtr clone() const override |
32 | { |
33 | std::shared_ptr<ASTWatchQuery> res = std::make_shared<ASTWatchQuery>(*this); |
34 | res->children.clear(); |
35 | cloneOutputOptions(*res); |
36 | return res; |
37 | } |
38 | |
39 | protected: |
40 | void formatQueryImpl(const FormatSettings & s, FormatState & state, FormatStateStacked frame) const override |
41 | { |
42 | std::string indent_str = s.one_line ? "": std::string(4 * frame.indent, ' '); |
43 | |
44 | s.ostr << (s.hilite ? hilite_keyword : "") << "WATCH"<< " "<< (s.hilite ? hilite_none : "") |
45 | << (!database.empty() ? backQuoteIfNeed(database) + ".": "") << backQuoteIfNeed(table); |
46 | |
47 | if (is_watch_events) |
48 | { |
49 | s.ostr << " "<< (s.hilite ? hilite_keyword : "") << "EVENTS"<< (s.hilite ? hilite_none : ""); |
50 | } |
51 | |
52 | if (limit_length) |
53 | { |
54 | s.ostr << (s.hilite ? hilite_keyword : "") << s.nl_or_ws << indent_str << "LIMIT "<< (s.hilite ? hilite_none : ""); |
55 | limit_length->formatImpl(s, state, frame); |
56 | } |
57 | } |
58 | }; |
59 | |
60 | } |
61 |