1/*
2 * Copyright (c) 2021 Huawei Device Co., Ltd.
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 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#ifndef QUERY_HELPER_H
17#define QUERY_HELPER_H
18
19#include <set>
20
21#include "query.h"
22#include "types.h"
23
24namespace OHOS::DistributedKv {
25class QueryHelper {
26public:
27    API_EXPORT static DistributedDB::Query StringToDbQuery(const std::string &query, bool &isSuccess);
28
29private:
30    using DBQuery = DistributedDB::Query;
31    static std::string deviceId_;
32    static bool hasPrefixKey_;
33    static bool hasInKeys_;
34    static bool Handle(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
35    static bool HandleExtra(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
36    static bool HandleEqualTo(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
37    static bool HandleNotEqualTo(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
38    static bool HandleGreaterThan(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
39    static bool HandleLessThan(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
40    static bool HandleGreaterThanOrEqualTo(
41        const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
42    static bool HandleLessThanOrEqualTo(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
43    static bool HandleIsNull(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
44    static bool HandleIsNotNull(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
45    static bool HandleIn(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
46    static bool HandleNotIn(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
47    static bool HandleLike(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
48    static bool HandleNotLike(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
49    static bool HandleAnd(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
50    static bool HandleOr(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
51    static bool HandleOrderByAsc(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
52    static bool HandleOrderByDesc(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
53    static bool HandleOrderByWriteTime(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
54    static bool HandleLimit(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
55    static bool HandleBeginGroup(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
56    static bool HandleEndGroup(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
57    static bool HandleKeyPrefix(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
58    static bool HandleInKeys(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
59    static bool HandleSetSuggestIndex(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
60    static bool HandleDeviceId(const std::vector<std::string> &words, int &pointer, int end, DBQuery &dbQuery);
61    static int StringToInt(const std::string &word);
62    static int64_t StringToLong(const std::string &word);
63    static double StringToDouble(const std::string &word);
64    static bool StringToBoolean(const std::string &word);
65    static std::string StringToString(const std::string &word);
66    static std::vector<int> GetIntegerList(const std::vector<std::string> &words, int &elementPointer, int end);
67    static std::vector<int64_t> GetLongList(const std::vector<std::string> &words, int &elementPointer, int end);
68    static std::vector<double> GetDoubleList(const std::vector<std::string> &words, int &elementPointer, int end);
69    static std::vector<std::string> GetStringList(const std::vector<std::string> &words, int &elementPointer, int end);
70};
71} // namespace OHOS::DistributedKv
72#endif // QUERY_HELPER_H
73