1 /*
2 * Copyright (c) 2025 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 #define LOG_TAG "TransDB"
16 #include "trans_db.h"
17
18 #include "gdb_errors.h"
19 #include "db_trace.h"
20 #include "gdb_utils.h"
21 #include "logger.h"
22
23 namespace OHOS::DistributedDataAip {
24
25 constexpr int32_t MAX_GQL_LEN = 1024 * 1024;
26
TransDB(std::shared_ptr<Connection> connection)27 TransDB::TransDB(std::shared_ptr<Connection> connection) : conn_(connection)
28 {
29 }
30
QueryGql(const std::string & gql)31 std::pair<int32_t, std::shared_ptr<Result>> TransDB::QueryGql(const std::string &gql)
32 {
33 DISTRIBUTED_DATA_HITRACE(std::string(__FUNCTION__));
34 if (gql.empty() || gql.length() > MAX_GQL_LEN) {
35 LOG_ERROR("Gql is empty or length is too long.");
36 return { E_INVALID_ARGS, std::make_shared<FullResult>() };
37 }
38 if (GdbUtils::IsTransactionGql(gql)) {
39 LOG_ERROR("Transaction related statements are not supported.");
40 return { E_INVALID_ARGS, std::make_shared<FullResult>() };
41 }
42
43 auto [errCode, statement] = GetStatement(gql);
44 if (errCode != E_OK || statement == nullptr) {
45 return { errCode, std::make_shared<FullResult>() };
46 }
47
48 auto result = std::make_shared<FullResult>();
49 errCode = result->InitData(statement);
50 if (errCode != E_OK) {
51 LOG_ERROR("Get FullResult failed, errCode=%{public}d", errCode);
52 return { errCode, std::make_shared<FullResult>() };
53 }
54
55 return { errCode, result };
56 }
57
ExecuteGql(const std::string & gql)58 std::pair<int32_t, std::shared_ptr<Result>> TransDB::ExecuteGql(const std::string &gql)
59 {
60 DISTRIBUTED_DATA_HITRACE(std::string(__FUNCTION__));
61 if (gql.empty() || gql.length() > MAX_GQL_LEN) {
62 LOG_ERROR("Gql is empty or length is too long.");
63 return { E_INVALID_ARGS, std::make_shared<FullResult>() };
64 }
65 if (GdbUtils::IsTransactionGql(gql)) {
66 LOG_ERROR("Transaction related statements are not supported.");
67 return { E_INVALID_ARGS, std::make_shared<FullResult>() };
68 }
69
70 auto [errCode, statement] = GetStatement(gql);
71 if (errCode != E_OK || statement == nullptr) {
72 return { errCode, std::make_shared<FullResult>() };
73 }
74
75 errCode = statement->Step();
76 if (errCode != E_OK) {
77 LOG_ERROR("Step statement failed, errCode=%{public}d", errCode);
78 }
79 return { errCode, std::make_shared<FullResult>() };
80 }
81
GetStatement(const std::string & gql) const82 std::pair<int32_t, std::shared_ptr<Statement>> TransDB::GetStatement(const std::string &gql) const
83 {
84 auto connection = conn_.lock();
85 if (connection == nullptr) {
86 return { E_GRD_DB_INSTANCE_ABNORMAL, nullptr };
87 }
88 return connection->CreateStatement(gql, connection);
89 }
90
CreateTransaction()91 std::pair<int32_t, std::shared_ptr<Transaction>> TransDB::CreateTransaction()
92 {
93 return { E_NOT_SUPPORT, nullptr };
94 }
95
Close()96 int32_t TransDB::Close()
97 {
98 return E_NOT_SUPPORT;
99 }
100 } // namespace OHOS::DistributedDataAip