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1 /*
2  * Copyright (c) 2023 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 #include "cloud/cloud_storage_utils.h"
17 #include <set>
18 
19 #include "cloud/asset_operation_utils.h"
20 #include "cloud/cloud_db_constant.h"
21 #include "cloud/cloud_db_types.h"
22 #include "db_common.h"
23 #include "runtime_context.h"
24 
25 namespace DistributedDB {
BindInt64(int index,const VBucket & vBucket,const Field & field,sqlite3_stmt * upsertStmt)26 int CloudStorageUtils::BindInt64(int index, const VBucket &vBucket, const Field &field,
27     sqlite3_stmt *upsertStmt)
28 {
29     int64_t val = 0;
30     int errCode = GetValueFromVBucket<int64_t>(field.colName, vBucket, val);
31     if (field.nullable && errCode == -E_NOT_FOUND) {
32         errCode = SQLiteUtils::MapSQLiteErrno(sqlite3_bind_null(upsertStmt, index));
33     } else {
34         if (errCode != E_OK) {
35             LOGE("get int from vbucket failed, %d", errCode);
36             return -E_CLOUD_ERROR;
37         }
38         errCode = SQLiteUtils::BindInt64ToStatement(upsertStmt, index, val);
39     }
40 
41     if (errCode != E_OK) {
42         LOGE("Bind int to insert statement failed, %d", errCode);
43     }
44     return errCode;
45 }
46 
BindBool(int index,const VBucket & vBucket,const Field & field,sqlite3_stmt * upsertStmt)47 int CloudStorageUtils::BindBool(int index, const VBucket &vBucket, const Field &field,
48     sqlite3_stmt *upsertStmt)
49 {
50     bool val = false;
51     int errCode = GetValueFromVBucket<bool>(field.colName, vBucket, val);
52     if (field.nullable && errCode == -E_NOT_FOUND) {
53         errCode = SQLiteUtils::MapSQLiteErrno(sqlite3_bind_null(upsertStmt, index));
54     } else {
55         if (errCode != E_OK) {
56             LOGE("get bool from vbucket failed, %d", errCode);
57             return -E_CLOUD_ERROR;
58         }
59         errCode = SQLiteUtils::BindInt64ToStatement(upsertStmt, index, val);
60     }
61 
62     if (errCode != E_OK) {
63         LOGE("Bind bool to insert statement failed, %d", errCode);
64     }
65     return errCode;
66 }
67 
BindDouble(int index,const VBucket & vBucket,const Field & field,sqlite3_stmt * upsertStmt)68 int CloudStorageUtils::BindDouble(int index, const VBucket &vBucket, const Field &field,
69     sqlite3_stmt *upsertStmt)
70 {
71     double val = 0.0;
72     int errCode = GetValueFromVBucket<double>(field.colName, vBucket, val);
73     if (field.nullable && errCode == -E_NOT_FOUND) {
74         errCode = SQLiteUtils::MapSQLiteErrno(sqlite3_bind_null(upsertStmt, index));
75     } else {
76         if (errCode != E_OK) {
77             LOGE("get double from vbucket failed, %d", errCode);
78             return -E_CLOUD_ERROR;
79         }
80         errCode = SQLiteUtils::MapSQLiteErrno(sqlite3_bind_double(upsertStmt, index, val));
81     }
82 
83     if (errCode != E_OK) {
84         LOGE("Bind double to insert statement failed, %d", errCode);
85     }
86     return errCode;
87 }
88 
BindText(int index,const VBucket & vBucket,const Field & field,sqlite3_stmt * upsertStmt)89 int CloudStorageUtils::BindText(int index, const VBucket &vBucket, const Field &field,
90     sqlite3_stmt *upsertStmt)
91 {
92     std::string str;
93     int errCode = GetValueFromVBucket<std::string>(field.colName, vBucket, str);
94     if (field.nullable && errCode == -E_NOT_FOUND) {
95         errCode = SQLiteUtils::MapSQLiteErrno(sqlite3_bind_null(upsertStmt, index));
96     } else {
97         if (errCode != E_OK) {
98             LOGE("get string from vbucket failed, %d", errCode);
99             return -E_CLOUD_ERROR;
100         }
101         errCode = SQLiteUtils::BindTextToStatement(upsertStmt, index, str);
102     }
103 
104     if (errCode != E_OK) {
105         LOGE("Bind string to insert statement failed, %d", errCode);
106     }
107     return errCode;
108 }
109 
BindBlob(int index,const VBucket & vBucket,const Field & field,sqlite3_stmt * upsertStmt)110 int CloudStorageUtils::BindBlob(int index, const VBucket &vBucket, const Field &field,
111     sqlite3_stmt *upsertStmt)
112 {
113     int errCode = E_OK;
114     Bytes val;
115     if (field.type == TYPE_INDEX<Bytes>) {
116         errCode = GetValueFromVBucket<Bytes>(field.colName, vBucket, val);
117         if (!(IsFieldValid(field, errCode))) {
118             goto ERROR;
119         }
120     } else if (field.type == TYPE_INDEX<Asset>) {
121         Asset asset;
122         errCode = GetValueFromVBucket(field.colName, vBucket, asset);
123         if (!(IsFieldValid(field, errCode))) {
124             goto ERROR;
125         }
126         RuntimeContext::GetInstance()->AssetToBlob(asset, val);
127     } else {
128         Assets assets;
129         errCode = GetValueFromVBucket(field.colName, vBucket, assets);
130         if (!(IsFieldValid(field, errCode))) {
131             goto ERROR;
132         }
133         RuntimeContext::GetInstance()->AssetsToBlob(assets, val);
134     }
135 
136     if (errCode == -E_NOT_FOUND) {
137         errCode = SQLiteUtils::MapSQLiteErrno(sqlite3_bind_null(upsertStmt, index));
138     } else {
139         errCode = SQLiteUtils::BindBlobToStatement(upsertStmt, index, val);
140     }
141     if (errCode != E_OK) {
142         LOGE("Bind blob to insert statement failed, %d", errCode);
143     }
144     return errCode;
145 ERROR:
146     LOGE("get blob from vbucket failed, %d", errCode);
147     return -E_CLOUD_ERROR;
148 }
149 
BindAsset(int index,const VBucket & vBucket,const Field & field,sqlite3_stmt * upsertStmt)150 int CloudStorageUtils::BindAsset(int index, const VBucket &vBucket, const Field &field, sqlite3_stmt *upsertStmt)
151 {
152     int errCode;
153     Bytes val;
154     Type entry;
155     bool isExisted = GetTypeCaseInsensitive(field.colName, vBucket, entry);
156     if (!isExisted || entry.index() == TYPE_INDEX<Nil>) {
157         if (!field.nullable) {
158             LOGE("field value is not allowed to be null, %d", -E_CLOUD_ERROR);
159             return -E_CLOUD_ERROR;
160         }
161         return SQLiteUtils::MapSQLiteErrno(sqlite3_bind_null(upsertStmt, index));
162     }
163 
164     Type type = entry;
165     if (field.type == TYPE_INDEX<Asset>) {
166         Asset asset;
167         errCode = GetValueFromOneField(type, asset);
168         if (errCode != E_OK) {
169             LOGE("can not get asset from vBucket when bind, %d", errCode);
170             return errCode;
171         }
172         asset.flag = static_cast<uint32_t>(AssetOpType::NO_CHANGE);
173         errCode = RuntimeContext::GetInstance()->AssetToBlob(asset, val);
174     } else if (field.type == TYPE_INDEX<Assets>) {
175         Assets assets;
176         errCode = GetValueFromOneField(type, assets);
177         if (errCode != E_OK) {
178             LOGE("can not get assets from vBucket when bind, %d", errCode);
179             return errCode;
180         }
181         if (!assets.empty()) {
182             for (auto &asset: assets) {
183                 asset.flag = static_cast<uint32_t>(AssetOpType::NO_CHANGE);
184             }
185             errCode = RuntimeContext::GetInstance()->AssetsToBlob(assets, val);
186         }
187     } else {
188         LOGE("field type is not asset or assets, %d", -E_CLOUD_ERROR);
189         return -E_CLOUD_ERROR;
190     }
191     if (errCode != E_OK) {
192         LOGE("assets or asset to blob fail, %d", -E_CLOUD_ERROR);
193         return -E_CLOUD_ERROR;
194     }
195     if (val.empty()) {
196         errCode = SQLiteUtils::MapSQLiteErrno(sqlite3_bind_null(upsertStmt, index));
197     } else {
198         errCode = SQLiteUtils::BindBlobToStatement(upsertStmt, index, val);
199     }
200     return errCode;
201 }
202 
Int64ToVector(const VBucket & vBucket,const Field & field,CollateType collateType,std::vector<uint8_t> & value)203 int CloudStorageUtils::Int64ToVector(const VBucket &vBucket, const Field &field, CollateType collateType,
204     std::vector<uint8_t> &value)
205 {
206     (void)collateType;
207     int64_t val = 0;
208     if (CloudStorageUtils::GetValueFromVBucket(field.colName, vBucket, val) != E_OK) {
209         return -E_CLOUD_ERROR;
210     }
211     DBCommon::StringToVector(std::to_string(val), value);
212     return E_OK;
213 }
214 
BoolToVector(const VBucket & vBucket,const Field & field,CollateType collateType,std::vector<uint8_t> & value)215 int CloudStorageUtils::BoolToVector(const VBucket &vBucket, const Field &field, CollateType collateType,
216     std::vector<uint8_t> &value)
217 {
218     (void)collateType;
219     bool val = false;
220     if (CloudStorageUtils::GetValueFromVBucket(field.colName, vBucket, val) != E_OK) { // LCOV_EXCL_BR_LINE
221         return -E_CLOUD_ERROR;
222     }
223     DBCommon::StringToVector(std::to_string(val ? 1 : 0), value);
224     return E_OK;
225 }
226 
DoubleToVector(const VBucket & vBucket,const Field & field,CollateType collateType,std::vector<uint8_t> & value)227 int CloudStorageUtils::DoubleToVector(const VBucket &vBucket, const Field &field, CollateType collateType,
228     std::vector<uint8_t> &value)
229 {
230     (void)collateType;
231     double val = 0.0;
232     if (CloudStorageUtils::GetValueFromVBucket(field.colName, vBucket, val) != E_OK) { // LCOV_EXCL_BR_LINE
233         return -E_CLOUD_ERROR;
234     }
235     std::ostringstream s;
236     s << val;
237     DBCommon::StringToVector(s.str(), value);
238     return E_OK;
239 }
240 
TextToVector(const VBucket & vBucket,const Field & field,CollateType collateType,std::vector<uint8_t> & value)241 int CloudStorageUtils::TextToVector(const VBucket &vBucket, const Field &field, CollateType collateType,
242     std::vector<uint8_t> &value)
243 {
244     std::string val;
245     if (CloudStorageUtils::GetValueFromVBucket(field.colName, vBucket, val) != E_OK) {
246         return -E_CLOUD_ERROR;
247     }
248     if (collateType == CollateType::COLLATE_NOCASE) {
249         std::transform(val.begin(), val.end(), val.begin(), ::toupper);
250     } else if (collateType == CollateType::COLLATE_RTRIM) {
251         DBCommon::RTrim(val);
252     }
253 
254     DBCommon::StringToVector(val, value);
255     return E_OK;
256 }
257 
BlobToVector(const VBucket & vBucket,const Field & field,CollateType collateType,std::vector<uint8_t> & value)258 int CloudStorageUtils::BlobToVector(const VBucket &vBucket, const Field &field, CollateType collateType,
259     std::vector<uint8_t> &value)
260 {
261     (void)collateType;
262     if (field.type == TYPE_INDEX<Bytes>) { // LCOV_EXCL_BR_LINE
263         return CloudStorageUtils::GetValueFromVBucket(field.colName, vBucket, value);
264     } else if (field.type == TYPE_INDEX<Asset>) {
265         Asset val;
266         if (CloudStorageUtils::GetValueFromVBucket(field.colName, vBucket, val) != E_OK) { // LCOV_EXCL_BR_LINE
267             return -E_CLOUD_ERROR;
268         }
269         int errCode = RuntimeContext::GetInstance()->AssetToBlob(val, value);
270         if (errCode != E_OK) { // LCOV_EXCL_BR_LINE
271             LOGE("asset to blob fail, %d", errCode);
272         }
273         return errCode;
274     } else {
275         Assets val;
276         if (CloudStorageUtils::GetValueFromVBucket(field.colName, vBucket, val) != E_OK) { // LCOV_EXCL_BR_LINE
277             return -E_CLOUD_ERROR;
278         }
279         int errCode = RuntimeContext::GetInstance()->AssetsToBlob(val, value);
280         if (errCode != E_OK) { // LCOV_EXCL_BR_LINE
281             LOGE("assets to blob fail, %d", errCode);
282         }
283         return errCode;
284     }
285 }
286 
GetCloudPrimaryKey(const TableSchema & tableSchema)287 std::set<std::string> CloudStorageUtils::GetCloudPrimaryKey(const TableSchema &tableSchema)
288 {
289     std::set<std::string> pkSet;
290     for (const auto &field : tableSchema.fields) {
291         if (field.primary) {
292             pkSet.insert(field.colName);
293         }
294     }
295     return pkSet;
296 }
297 
GetCloudAsset(const TableSchema & tableSchema)298 std::vector<Field> CloudStorageUtils::GetCloudAsset(const TableSchema &tableSchema)
299 {
300     std::vector<Field> assetFields;
301     for (const auto &item: tableSchema.fields) {
302         if (item.type != TYPE_INDEX<Asset> && item.type != TYPE_INDEX<Assets>) {
303             continue;
304         }
305         assetFields.push_back(item);
306     }
307     return assetFields;
308 }
309 
GetCloudPrimaryKeyField(const TableSchema & tableSchema,bool sortByName)310 std::vector<Field> CloudStorageUtils::GetCloudPrimaryKeyField(const TableSchema &tableSchema, bool sortByName)
311 {
312     std::vector<Field> pkVec;
313     for (const auto &field : tableSchema.fields) {
314         if (field.primary) {
315             pkVec.push_back(field);
316         }
317     }
318     if (sortByName) {
319         std::sort(pkVec.begin(), pkVec.end(), [](const Field &a, const Field &b) {
320            return a.colName < b.colName;
321         });
322     }
323     return pkVec;
324 }
325 
GetCloudPrimaryKeyFieldMap(const TableSchema & tableSchema,bool sortByUpper)326 std::map<std::string, Field> CloudStorageUtils::GetCloudPrimaryKeyFieldMap(const TableSchema &tableSchema,
327     bool sortByUpper)
328 {
329     std::map<std::string, Field> pkMap;
330     for (const auto &field : tableSchema.fields) {
331         if (field.primary) {
332             if (sortByUpper) {
333                 pkMap[DBCommon::ToUpperCase(field.colName)] = field;
334             } else {
335                 pkMap[field.colName] = field;
336             }
337         }
338     }
339     return pkMap;
340 }
341 
GetAssetFieldsFromSchema(const TableSchema & tableSchema,const VBucket & vBucket,std::vector<Field> & fields)342 int CloudStorageUtils::GetAssetFieldsFromSchema(const TableSchema &tableSchema, const VBucket &vBucket,
343     std::vector<Field> &fields)
344 {
345     for (const auto &field: tableSchema.fields) {
346         Type type;
347         bool isExisted = GetTypeCaseInsensitive(field.colName, vBucket, type);
348         if (!isExisted) {
349             continue;
350         }
351         if (type.index() != TYPE_INDEX<Asset> && type.index() != TYPE_INDEX<Assets>) {
352             continue;
353         }
354         fields.push_back(field);
355     }
356     if (fields.empty()) {
357         return -E_CLOUD_ERROR;
358     }
359     return E_OK;
360 }
361 
IsContainsPrimaryKey(const TableSchema & tableSchema)362 bool CloudStorageUtils::IsContainsPrimaryKey(const TableSchema &tableSchema)
363 {
364     for (const auto &field : tableSchema.fields) {
365         if (field.primary) {
366             return true;
367         }
368     }
369     return false;
370 }
371 
ObtainAssetFromVBucket(const VBucket & vBucket,VBucket & asset)372 void CloudStorageUtils::ObtainAssetFromVBucket(const VBucket &vBucket, VBucket &asset)
373 {
374     for (const auto &item: vBucket) {
375         if (IsAsset(item.second)) {
376             Asset data = std::get<Asset>(item.second);
377             asset.insert_or_assign(item.first, data);
378         } else if (IsAssets(item.second)) {
379             Assets data = std::get<Assets>(item.second);
380             asset.insert_or_assign(item.first, data);
381         }
382     }
383 }
384 
StatusToFlag(AssetStatus status)385 AssetOpType CloudStorageUtils::StatusToFlag(AssetStatus status)
386 {
387     switch (AssetOperationUtils::EraseBitMask(status)) {
388         case AssetStatus::INSERT:
389             return AssetOpType::INSERT;
390         case AssetStatus::DELETE:
391             return AssetOpType::DELETE;
392         case AssetStatus::UPDATE:
393             return AssetOpType::UPDATE;
394         default:
395             return AssetOpType::NO_CHANGE;
396     }
397 }
398 
FlagToStatus(AssetOpType opType)399 AssetStatus CloudStorageUtils::FlagToStatus(AssetOpType opType)
400 {
401     switch (opType) {
402         case AssetOpType::INSERT:
403             return AssetStatus::INSERT;
404         case AssetOpType::DELETE:
405             return AssetStatus::DELETE;
406         case AssetOpType::UPDATE:
407             return AssetStatus::UPDATE;
408         default:
409             return AssetStatus::NORMAL;
410     }
411 }
412 
ChangeAssetsOnVBucketToAsset(VBucket & vBucket,std::vector<Field> & fields)413 void CloudStorageUtils::ChangeAssetsOnVBucketToAsset(VBucket &vBucket, std::vector<Field> &fields)
414 {
415     for (const Field &field: fields) {
416         if (field.type == TYPE_INDEX<Asset>) {
417             Type asset = GetAssetFromAssets(vBucket[field.colName]);
418             vBucket[field.colName] = asset;
419         }
420     }
421 }
422 
GetAssetFromAssets(Type & value)423 Type CloudStorageUtils::GetAssetFromAssets(Type &value)
424 {
425     Asset assetVal;
426     int errCode = GetValueFromType(value, assetVal);
427     if (errCode == E_OK) {
428         return assetVal;
429     }
430 
431     Assets assets;
432     errCode = GetValueFromType(value, assets);
433     if (errCode != E_OK) {
434         return Nil();
435     }
436 
437     for (Asset &asset: assets) {
438         if (asset.flag != static_cast<uint32_t>(AssetOpType::DELETE)) {
439             return std::move(asset);
440         }
441     }
442     return Nil();
443 }
444 
FillAssetBeforeDownload(Asset & asset)445 int CloudStorageUtils::FillAssetBeforeDownload(Asset &asset)
446 {
447     AssetOpType flag = static_cast<AssetOpType>(asset.flag);
448     AssetStatus status = static_cast<AssetStatus>(asset.status);
449     uint32_t lowStatus = AssetOperationUtils::EraseBitMask(asset.status);
450     switch (flag) {
451         case AssetOpType::DELETE: {
452             // these asset no need to download, just remove before download
453             if (lowStatus == static_cast<uint32_t>(AssetStatus::DELETE) ||
454                 lowStatus == static_cast<uint32_t>(AssetStatus::ABNORMAL) ||
455                 (asset.status == (AssetStatus::DOWNLOADING | AssetStatus::DOWNLOAD_WITH_NULL))) {
456                 return -E_NOT_FOUND;
457             }
458             break;
459         }
460         case AssetOpType::INSERT:
461         case AssetOpType::UPDATE: {
462             if (status != AssetStatus::NORMAL) {
463                 asset.hash = std::string("");
464             }
465             break;
466         }
467         default:
468             break;
469     }
470     return E_OK;
471 }
472 
FillAssetAfterDownload(Asset & asset,Asset & dbAsset,AssetOperationUtils::AssetOpType assetOpType)473 int CloudStorageUtils::FillAssetAfterDownload(Asset &asset, Asset &dbAsset,
474     AssetOperationUtils::AssetOpType assetOpType)
475 {
476     if (assetOpType == AssetOperationUtils::AssetOpType::NOT_HANDLE) {
477         return E_OK;
478     }
479     dbAsset = asset;
480     AssetOpType flag = static_cast<AssetOpType>(asset.flag);
481     if (asset.status != AssetStatus::NORMAL) {
482         return E_OK;
483     }
484     switch (flag) {
485         case AssetOpType::DELETE: {
486             return -E_NOT_FOUND;
487         }
488         default:
489             break;
490     }
491     return E_OK;
492 }
493 
FillAssetsAfterDownload(Assets & assets,Assets & dbAssets,const std::map<std::string,AssetOperationUtils::AssetOpType> & assetOpTypeMap)494 void CloudStorageUtils::FillAssetsAfterDownload(Assets &assets, Assets &dbAssets,
495     const std::map<std::string, AssetOperationUtils::AssetOpType> &assetOpTypeMap)
496 {
497     MergeAssetWithFillFunc(assets, dbAssets, assetOpTypeMap, FillAssetAfterDownload);
498 }
499 
FillAssetForUpload(Asset & asset,Asset & dbAsset,AssetOperationUtils::AssetOpType assetOpType)500 int CloudStorageUtils::FillAssetForUpload(Asset &asset, Asset &dbAsset, AssetOperationUtils::AssetOpType assetOpType)
501 {
502     if (assetOpType == AssetOperationUtils::AssetOpType::NOT_HANDLE) {
503         // db assetId may be empty, need to be based on cache
504         // Notes: Assign happened when dbAsset.assetId is empty because of asset.assetId may be empty.
505         if (dbAsset.assetId.empty()) {
506             dbAsset.assetId = asset.assetId;
507         }
508         return E_OK;
509     }
510     AssetStatus status = static_cast<AssetStatus>(dbAsset.status);
511     dbAsset = asset;
512     switch (StatusToFlag(status)) {
513         case AssetOpType::INSERT:
514         case AssetOpType::UPDATE:
515         case AssetOpType::NO_CHANGE: {
516             dbAsset.status = static_cast<uint32_t>(AssetStatus::NORMAL);
517             break;
518         }
519         case AssetOpType::DELETE: {
520             return -E_NOT_FOUND;
521         }
522         default: {
523             break;
524         }
525     }
526     dbAsset.flag = static_cast<uint32_t>(AssetOpType::NO_CHANGE);
527     return E_OK;
528 }
529 
FillAssetsForUpload(Assets & assets,Assets & dbAssets,const std::map<std::string,AssetOperationUtils::AssetOpType> & assetOpTypeMap)530 void CloudStorageUtils::FillAssetsForUpload(Assets &assets, Assets &dbAssets,
531     const std::map<std::string, AssetOperationUtils::AssetOpType> &assetOpTypeMap)
532 {
533     MergeAssetWithFillFunc(assets, dbAssets, assetOpTypeMap, FillAssetForUpload);
534 }
535 
FillAssetBeforeUpload(Asset & asset,Asset & dbAsset,AssetOperationUtils::AssetOpType assetOpType)536 int CloudStorageUtils::FillAssetBeforeUpload(Asset &asset, Asset &dbAsset, AssetOperationUtils::AssetOpType assetOpType)
537 {
538     if (assetOpType == AssetOperationUtils::AssetOpType::NOT_HANDLE) {
539         return E_OK;
540     }
541     dbAsset = asset;
542     switch (static_cast<AssetOpType>(asset.flag)) {
543         case AssetOpType::INSERT:
544         case AssetOpType::UPDATE:
545         case AssetOpType::DELETE:
546         case AssetOpType::NO_CHANGE:
547             dbAsset.status |= static_cast<uint32_t>(AssetStatus::UPLOADING);
548             break;
549         default:
550             break;
551     }
552     dbAsset.flag = static_cast<uint32_t>(AssetOpType::NO_CHANGE);
553     return E_OK;
554 }
555 
FillAssetsBeforeUpload(Assets & assets,Assets & dbAssets,const std::map<std::string,AssetOperationUtils::AssetOpType> & assetOpTypeMap)556 void CloudStorageUtils::FillAssetsBeforeUpload(Assets &assets, Assets &dbAssets, const std::map<std::string,
557     AssetOperationUtils::AssetOpType> &assetOpTypeMap)
558 {
559     MergeAssetWithFillFunc(assets, dbAssets, assetOpTypeMap, FillAssetBeforeUpload);
560 }
561 
PrepareToFillAssetFromVBucket(VBucket & vBucket,std::function<int (Asset &)> fillAsset)562 void CloudStorageUtils::PrepareToFillAssetFromVBucket(VBucket &vBucket, std::function<int(Asset &)> fillAsset)
563 {
564     for (auto &item: vBucket) {
565         if (IsAsset(item.second)) {
566             Asset asset;
567             GetValueFromType(item.second, asset);
568             fillAsset(asset);
569             vBucket[item.first] = asset;
570         } else if (IsAssets(item.second)) {
571             Assets assets;
572             GetValueFromType(item.second, assets);
573             for (auto it = assets.begin(); it != assets.end();) {
574                 fillAsset(*it) == -E_NOT_FOUND ? it = assets.erase(it) : ++it;
575             }
576             vBucket[item.first] = assets;
577         }
578     }
579 }
580 
FillAssetFromVBucketFinish(const AssetOperationUtils::RecordAssetOpType & assetOpType,VBucket & vBucket,VBucket & dbAssets,std::function<int (Asset &,Asset &,AssetOperationUtils::AssetOpType)> fillAsset,std::function<void (Assets &,Assets &,const std::map<std::string,AssetOperationUtils::AssetOpType> &)> fillAssets)581 void CloudStorageUtils::FillAssetFromVBucketFinish(const AssetOperationUtils::RecordAssetOpType &assetOpType,
582     VBucket &vBucket, VBucket &dbAssets,
583     std::function<int(Asset &, Asset &, AssetOperationUtils::AssetOpType)> fillAsset,
584     std::function<void(Assets &, Assets &,
585     const std::map<std::string, AssetOperationUtils::AssetOpType> &)> fillAssets)
586 {
587     for (auto &item: dbAssets) {
588         if (IsAsset(item.second)) {
589             Asset cacheItem;
590             GetValueFromType(vBucket[item.first], cacheItem);
591             Asset dbItem;
592             GetValueFromType(item.second, dbItem);
593             AssetOperationUtils::AssetOpType opType = AssetOperationUtils::AssetOpType::NOT_HANDLE;
594             auto iterCol = assetOpType.find(item.first);
595             if (iterCol != assetOpType.end() && iterCol->second.find(dbItem.name) != iterCol->second.end()) {
596                 opType = iterCol->second.at(dbItem.name);
597             }
598             int errCode = fillAsset(cacheItem, dbItem, opType);
599             if (errCode != E_OK) {
600                 dbAssets[item.first] = Nil();
601             } else {
602                 dbAssets[item.first] = dbItem;
603             }
604             continue;
605         }
606         if (IsAssets(item.second)) {
607             Assets cacheItems;
608             GetValueFromType(vBucket[item.first], cacheItems);
609             Assets dbItems;
610             GetValueFromType(item.second, dbItems);
611             auto iterCol = assetOpType.find(item.first);
612             if (iterCol == assetOpType.end()) {
613                 fillAssets(cacheItems, dbItems, {});
614             } else {
615                 fillAssets(cacheItems, dbItems, iterCol->second);
616             }
617             if (dbItems.empty()) {
618                 dbAssets[item.first] = Nil();
619             } else {
620                 dbAssets[item.first] = dbItems;
621             }
622         }
623     }
624 }
625 
IsAsset(const Type & type)626 bool CloudStorageUtils::IsAsset(const Type &type)
627 {
628     return type.index() == TYPE_INDEX<Asset>;
629 }
630 
IsAssets(const Type & type)631 bool CloudStorageUtils::IsAssets(const Type &type)
632 {
633     return type.index() == TYPE_INDEX<Assets>;
634 }
635 
CalculateHashKeyForOneField(const Field & field,const VBucket & vBucket,bool allowEmpty,CollateType collateType,std::vector<uint8_t> & hashValue)636 int CloudStorageUtils::CalculateHashKeyForOneField(const Field &field, const VBucket &vBucket, bool allowEmpty,
637     CollateType collateType, std::vector<uint8_t> &hashValue)
638 {
639     Type type;
640     bool isExisted = GetTypeCaseInsensitive(field.colName, vBucket, type);
641     if (allowEmpty && !isExisted) {
642         return E_OK; // if vBucket from cloud doesn't contain primary key and allowEmpty, no need to calculate hash
643     }
644     static std::map<int32_t, std::function<int(const VBucket &, const Field &, CollateType,
645         std::vector<uint8_t> &)>> toVecFunc = {
646         { TYPE_INDEX<int64_t>, &CloudStorageUtils::Int64ToVector },
647         { TYPE_INDEX<bool>, &CloudStorageUtils::BoolToVector },
648         { TYPE_INDEX<double>, &CloudStorageUtils::DoubleToVector },
649         { TYPE_INDEX<std::string>, &CloudStorageUtils::TextToVector },
650         { TYPE_INDEX<Bytes>, &CloudStorageUtils::BlobToVector },
651         { TYPE_INDEX<Asset>, &CloudStorageUtils::BlobToVector },
652         { TYPE_INDEX<Assets>, &CloudStorageUtils::BlobToVector },
653     };
654     auto it = toVecFunc.find(field.type);
655     if (it == toVecFunc.end()) {
656         LOGE("unknown cloud type when convert field to vector.");
657         return -E_CLOUD_ERROR;
658     }
659     std::vector<uint8_t> value;
660     int errCode = it->second(vBucket, field, collateType, value);
661     if (errCode != E_OK) {
662         LOGE("convert cloud field fail, %d", errCode);
663         return errCode;
664     }
665     return DBCommon::CalcValueHash(value, hashValue);
666 }
667 
IsAssetsContainDuplicateAsset(Assets & assets)668 bool CloudStorageUtils::IsAssetsContainDuplicateAsset(Assets &assets)
669 {
670     std::set<std::string> set;
671     for (const auto &asset : assets) {
672         if (set.find(asset.name) != set.end()) {
673             LOGE("assets contain duplicate Asset");
674             return true;
675         }
676         set.insert(asset.name);
677     }
678     return false;
679 }
680 
EraseNoChangeAsset(std::map<std::string,Assets> & assetsMap)681 void CloudStorageUtils::EraseNoChangeAsset(std::map<std::string, Assets> &assetsMap)
682 {
683     for (auto items = assetsMap.begin(); items != assetsMap.end();) {
684         for (auto item = items->second.begin(); item != items->second.end();) {
685             if (static_cast<AssetOpType>((*item).flag) == AssetOpType::NO_CHANGE) {
686                 item = items->second.erase(item);
687             } else {
688                 item++;
689             }
690         }
691         if (items->second.empty()) {
692             items = assetsMap.erase(items);
693         } else {
694             items++;
695         }
696     }
697 }
698 
MergeDownloadAsset(std::map<std::string,Assets> & downloadAssets,std::map<std::string,Assets> & mergeAssets)699 void CloudStorageUtils::MergeDownloadAsset(std::map<std::string, Assets> &downloadAssets,
700     std::map<std::string, Assets> &mergeAssets)
701 {
702     for (auto &items: mergeAssets) {
703         auto downloadItem = downloadAssets.find(items.first);
704         if (downloadItem == downloadAssets.end()) { // LCOV_EXCL_BR_LINE
705             continue;
706         }
707         std::map<std::string, size_t> beCoveredAssetsMap = GenAssetsIndexMap(items.second);
708         for (const Asset &asset: downloadItem->second) {
709             auto it = beCoveredAssetsMap.find(asset.name);
710             if (it == beCoveredAssetsMap.end()) { // LCOV_EXCL_BR_LINE
711                 continue;
712             }
713             items.second[it->second] = asset;
714         }
715     }
716 }
717 
GenAssetsIndexMap(Assets & assets)718 std::map<std::string, size_t> CloudStorageUtils::GenAssetsIndexMap(Assets &assets)
719 {
720     // key of assetsIndexMap is name of asset, the value of it is index.
721     std::map<std::string, size_t> assetsIndexMap;
722     for (size_t i = 0; i < assets.size(); i++) {
723         assetsIndexMap[assets[i].name] = i;
724     }
725     return assetsIndexMap;
726 }
727 
IsVbucketContainsAllPK(const VBucket & vBucket,const std::set<std::string> & pkSet)728 bool CloudStorageUtils::IsVbucketContainsAllPK(const VBucket &vBucket, const std::set<std::string> &pkSet)
729 {
730     if (pkSet.empty()) {
731         return false;
732     }
733     for (const auto &pk : pkSet) {
734         Type type;
735         bool isExisted = GetTypeCaseInsensitive(pk, vBucket, type);
736         if (!isExisted) {
737             return false;
738         }
739     }
740     return true;
741 }
742 
IsSharedTable(const TableSchema & tableSchema)743 bool CloudStorageUtils::IsSharedTable(const TableSchema &tableSchema)
744 {
745     return tableSchema.sharedTableName == tableSchema.name;
746 }
747 
IsViolationOfConstraints(const std::string & name,const std::vector<FieldInfo> & fieldInfos)748 static bool IsViolationOfConstraints(const std::string &name, const std::vector<FieldInfo> &fieldInfos)
749 {
750     for (const auto &field : fieldInfos) {
751         if (name != field.GetFieldName()) {
752             continue;
753         }
754         if (field.GetStorageType() == StorageType::STORAGE_TYPE_REAL) {
755             LOGE("[ConstraintsCheckForCloud] Not support create distributed table with real primary key.");
756             return true;
757         } else if (field.IsAssetType() || field.IsAssetsType()) {
758             LOGE("[ConstraintsCheckForCloud] Not support create distributed table with asset primary key.");
759             return true;
760         } else {
761             return false;
762         }
763     }
764     return false;
765 }
766 
ConstraintsCheckForCloud(const TableInfo & table,const std::string & trimmedSql)767 int CloudStorageUtils::ConstraintsCheckForCloud(const TableInfo &table, const std::string &trimmedSql)
768 {
769     if (DBCommon::HasConstraint(trimmedSql, "UNIQUE", " ,", " ,)(")) {
770         LOGE("[ConstraintsCheckForCloud] Not support create distributed table with 'UNIQUE' constraint.");
771         return -E_NOT_SUPPORT;
772     }
773 
774     const std::map<int, FieldName> &primaryKeys = table.GetPrimaryKey();
775     const std::vector<FieldInfo> &fieldInfos = table.GetFieldInfos();
776     for (const auto &item : primaryKeys) {
777         if (IsViolationOfConstraints(item.second, fieldInfos)) {
778             return -E_NOT_SUPPORT;
779         }
780     }
781     return E_OK;
782 }
783 
CheckAssetStatus(const Assets & assets)784 bool CloudStorageUtils::CheckAssetStatus(const Assets &assets)
785 {
786     for (const Asset &asset: assets) {
787         if (AssetOperationUtils::EraseBitMask(asset.status) > static_cast<uint32_t>(AssetStatus::UPDATE)) {
788             LOGE("assets contain invalid status:[%u]", asset.status);
789             return false;
790         }
791     }
792     return true;
793 }
794 
GetTableRefUpdateSql(const TableInfo & table,OpType opType)795 std::string CloudStorageUtils::GetTableRefUpdateSql(const TableInfo &table, OpType opType)
796 {
797     std::string sql;
798     std::string rowid = std::string(DBConstant::SQLITE_INNER_ROWID);
799     for (const auto &reference : table.GetTableReference()) {
800         if (reference.columns.empty()) {
801             return "";
802         }
803         std::string sourceLogName = DBCommon::GetLogTableName(reference.sourceTableName);
804         sql += " UPDATE " + sourceLogName + " SET timestamp=get_raw_sys_time(), flag=flag|0x02 WHERE ";
805         int index = 0;
806         for (const auto &itCol : reference.columns) {
807             if (opType != OpType::UPDATE) {
808                 continue;
809             }
810             if (index++ != 0) {
811                 sql += " OR ";
812             }
813             sql += " (OLD." + itCol.second + " IS NOT " + " NEW." + itCol.second + ")";
814         }
815         if (opType == OpType::UPDATE) {
816             sql += " AND ";
817         }
818         sql += " (flag&0x08=0x00) AND data_key IN (SELECT " + sourceLogName + ".data_key FROM " + sourceLogName +
819             " LEFT JOIN " + reference.sourceTableName + " ON " + sourceLogName + ".data_key = " +
820             reference.sourceTableName + "." + rowid + " WHERE ";
821         index = 0;
822         for (const auto &itCol : reference.columns) {
823             if (index++ != 0) {
824                 sql += " OR ";
825             }
826             if (opType == OpType::UPDATE) {
827                 sql += itCol.first + "=OLD." + itCol.second + " OR " + itCol.first + "=NEW." + itCol.second;
828             } else if (opType == OpType::INSERT) {
829                 sql += itCol.first + "=NEW." + itCol.second;
830             } else if (opType == OpType::DELETE) {
831                 sql += itCol.first + "=OLD." + itCol.second;
832             }
833         }
834         sql += ");";
835     }
836     return sql;
837 }
838 
GetLeftJoinLogSql(const std::string & tableName,bool logAsTableA)839 std::string CloudStorageUtils::GetLeftJoinLogSql(const std::string &tableName, bool logAsTableA)
840 {
841     std::string sql;
842     if (logAsTableA) {
843         sql += " FROM '" + DBCommon::GetLogTableName(tableName) + "' AS a LEFT JOIN '" + tableName + "' AS b " +
844             " ON (a.data_key = b." + std::string(DBConstant::SQLITE_INNER_ROWID) + ")";
845     } else {
846         sql += " FROM '" + DBCommon::GetLogTableName(tableName) + "' AS b LEFT JOIN '" + tableName + "' AS a " +
847             " ON (b.data_key = a." + std::string(DBConstant::SQLITE_INNER_ROWID) + ")";
848     }
849     return sql;
850 }
851 
GetUpdateLockChangedSql()852 std::string CloudStorageUtils::GetUpdateLockChangedSql()
853 {
854     return " status = CASE WHEN status == 2 THEN 3 ELSE status END";
855 }
856 
GetDeleteLockChangedSql()857 std::string CloudStorageUtils::GetDeleteLockChangedSql()
858 {
859     return " status = CASE WHEN status == 2 or status == 3 THEN 1 ELSE status END";
860 }
861 
ChkFillCloudAssetParam(const CloudSyncBatch & data,int errCode)862 bool CloudStorageUtils::ChkFillCloudAssetParam(const CloudSyncBatch &data, int errCode)
863 {
864     if (data.assets.empty()) {
865         errCode = E_OK;
866         return true;
867     }
868     if (data.rowid.empty() || data.timestamp.empty()) {
869         errCode = -E_INVALID_ARGS;
870         LOGE("param is empty when fill cloud Asset. rowidN:%u, timeN:%u", errCode, data.rowid.size(),
871             data.timestamp.size());
872         return true;
873     }
874     if (data.assets.size() != data.rowid.size() || data.assets.size() != data.timestamp.size() ||
875         data.assets.size() != data.hashKey.size() || data.assets.size() != data.extend.size()) {
876         errCode = -E_INVALID_ARGS;
877         LOGE("the num of param is invalid when fill cloud Asset. assetsN:%u, rowidN:%u, timeN:%u, "
878              "hashKeyN:%u, extendN:%u", data.assets.size(), data.rowid.size(), data.timestamp.size(),
879              data.hashKey.size(), data.extend.size());
880         return true;
881     }
882     return false;
883 }
884 
GetToBeRemoveAssets(const VBucket & vBucket,const AssetOperationUtils::RecordAssetOpType & assetOpType,std::vector<Asset> & removeAssets)885 void CloudStorageUtils::GetToBeRemoveAssets(const VBucket &vBucket,
886     const AssetOperationUtils::RecordAssetOpType &assetOpType, std::vector<Asset> &removeAssets)
887 {
888     for (const auto &col: assetOpType) {
889         Type itItem;
890         bool isExisted = GetTypeCaseInsensitive(col.first, vBucket, itItem);
891         if (!isExisted) {
892             continue;
893         }
894         if (!CloudStorageUtils::IsAsset(itItem) && !CloudStorageUtils::IsAssets(itItem)) {
895             continue;
896         }
897         if (CloudStorageUtils::IsAsset(itItem)) {
898             Asset delAsset;
899             GetValueFromType(itItem, delAsset);
900             auto itOp = col.second.find(delAsset.name);
901             if (itOp != col.second.end() && itOp->second == AssetOperationUtils::AssetOpType::NOT_HANDLE
902                 && delAsset.flag != static_cast<uint32_t>(AssetOpType::DELETE)) {
903                 removeAssets.push_back(delAsset);
904             }
905             continue;
906         }
907         Assets assets;
908         GetValueFromType(itItem, assets);
909         for (const auto &asset: assets) {
910             auto itOp = col.second.find(asset.name);
911             if (itOp == col.second.end() || itOp->second == AssetOperationUtils::AssetOpType::HANDLE ||
912                 asset.flag == static_cast<uint32_t>(AssetOpType::DELETE)) {
913                 continue;
914             }
915             removeAssets.push_back(asset);
916         }
917     }
918 }
919 
FillAssetForUploadFailed(Asset & asset,Asset & dbAsset,AssetOperationUtils::AssetOpType assetOpType)920 int CloudStorageUtils::FillAssetForUploadFailed(Asset &asset, Asset &dbAsset,
921     AssetOperationUtils::AssetOpType assetOpType)
922 {
923     dbAsset.assetId = asset.assetId;
924     dbAsset.status &= ~AssetStatus::UPLOADING;
925     return E_OK;
926 }
927 
FillAssetsForUploadFailed(Assets & assets,Assets & dbAssets,const std::map<std::string,AssetOperationUtils::AssetOpType> & assetOpTypeMap)928 void CloudStorageUtils::FillAssetsForUploadFailed(Assets &assets, Assets &dbAssets,
929     const std::map<std::string, AssetOperationUtils::AssetOpType> &assetOpTypeMap)
930 {
931     MergeAssetWithFillFunc(assets, dbAssets, assetOpTypeMap, FillAssetForUploadFailed);
932 }
933 
FillAssetAfterDownloadFail(Asset & asset,Asset & dbAsset,AssetOperationUtils::AssetOpType assetOpType)934 int CloudStorageUtils::FillAssetAfterDownloadFail(Asset &asset, Asset &dbAsset,
935     AssetOperationUtils::AssetOpType assetOpType)
936 {
937     AssetStatus status = static_cast<AssetStatus>(asset.status);
938     if (assetOpType == AssetOperationUtils::AssetOpType::NOT_HANDLE) {
939         return E_OK;
940     }
941     if (status != AssetStatus::ABNORMAL) {
942         return FillAssetAfterDownload(asset, dbAsset, assetOpType);
943     }
944     AssetOpType flag = static_cast<AssetOpType>(asset.flag);
945     dbAsset = asset;
946     switch (flag) {
947         case AssetOpType::INSERT:
948         case AssetOpType::DELETE:
949         case AssetOpType::UPDATE: {
950             dbAsset.hash = std::string("");
951             break;
952         }
953         default:
954             // other flag type do not need to clear hash
955             break;
956     }
957     return E_OK;
958 }
959 
FillAssetsAfterDownloadFail(Assets & assets,Assets & dbAssets,const std::map<std::string,AssetOperationUtils::AssetOpType> & assetOpTypeMap)960 void CloudStorageUtils::FillAssetsAfterDownloadFail(Assets &assets, Assets &dbAssets,
961     const std::map<std::string, AssetOperationUtils::AssetOpType> &assetOpTypeMap)
962 {
963     MergeAssetWithFillFunc(assets, dbAssets, assetOpTypeMap, FillAssetAfterDownloadFail);
964 }
965 
MergeAssetWithFillFunc(Assets & assets,Assets & dbAssets,const std::map<std::string,AssetOperationUtils::AssetOpType> & assetOpTypeMap,std::function<int (Asset &,Asset &,AssetOperationUtils::AssetOpType)> fillAsset)966 void CloudStorageUtils::MergeAssetWithFillFunc(Assets &assets, Assets &dbAssets, const std::map<std::string,
967     AssetOperationUtils::AssetOpType> &assetOpTypeMap,
968     std::function<int(Asset &, Asset &, AssetOperationUtils::AssetOpType)> fillAsset)
969 {
970     std::map<std::string, size_t> indexMap = GenAssetsIndexMap(assets);
971     for (auto dbAsset = dbAssets.begin(); dbAsset != dbAssets.end();) {
972         Asset cacheAsset;
973         auto it = indexMap.find(dbAsset->name);
974         if (it != indexMap.end()) {
975             cacheAsset = assets[it->second];
976         }
977         AssetOperationUtils::AssetOpType opType = AssetOperationUtils::AssetOpType::NOT_HANDLE;
978         auto iterOp = assetOpTypeMap.find(dbAsset->name);
979         if (iterOp != assetOpTypeMap.end()) {
980             opType = iterOp->second;
981         }
982         if (fillAsset(cacheAsset, *dbAsset, opType) == -E_NOT_FOUND) {
983             dbAsset = dbAssets.erase(dbAsset);
984         } else {
985             dbAsset++;
986         }
987     }
988 }
989 
GetHashValueWithPrimaryKeyMap(const VBucket & vBucket,const TableSchema & tableSchema,const TableInfo & localTable,const std::map<std::string,Field> & pkMap,bool allowEmpty)990 std::pair<int, std::vector<uint8_t>> CloudStorageUtils::GetHashValueWithPrimaryKeyMap(const VBucket &vBucket,
991     const TableSchema &tableSchema, const TableInfo &localTable, const std::map<std::string, Field> &pkMap,
992     bool allowEmpty)
993 {
994     int errCode = E_OK;
995     std::vector<uint8_t> hashValue;
996     if (pkMap.size() == 0) {
997         LOGE("do not support get hashValue when primaryKey map is empty.");
998         return { -E_INTERNAL_ERROR, {} };
999     } else if (pkMap.size() == 1) {
1000         std::vector<Field> pkVec = CloudStorageUtils::GetCloudPrimaryKeyField(tableSchema);
1001         FieldInfoMap fieldInfos = localTable.GetFields();
1002         if (fieldInfos.find(pkMap.begin()->first) == fieldInfos.end()) {
1003             LOGE("localSchema doesn't contain primary key.");
1004             return { -E_INTERNAL_ERROR, {} };
1005         }
1006         CollateType collateType = fieldInfos.at(pkMap.begin()->first).GetCollateType();
1007         errCode = CloudStorageUtils::CalculateHashKeyForOneField(
1008             pkVec.at(0), vBucket, allowEmpty, collateType, hashValue);
1009     } else {
1010         std::vector<uint8_t> tempRes;
1011         for (const auto &item: pkMap) {
1012             FieldInfoMap fieldInfos = localTable.GetFields();
1013             if (fieldInfos.find(item.first) == fieldInfos.end()) {
1014                 LOGE("localSchema doesn't contain primary key in multi pks.");
1015                 return { -E_INTERNAL_ERROR, {} };
1016             }
1017             std::vector<uint8_t> temp;
1018             CollateType collateType = fieldInfos.at(item.first).GetCollateType();
1019             errCode = CloudStorageUtils::CalculateHashKeyForOneField(
1020                 item.second, vBucket, allowEmpty, collateType, temp);
1021             if (errCode != E_OK) {
1022                 LOGE("calc hash fail when there is more than one primary key. errCode = %d", errCode);
1023                 return { errCode, {} };
1024             }
1025             tempRes.insert(tempRes.end(), temp.begin(), temp.end());
1026         }
1027         errCode = DBCommon::CalcValueHash(tempRes, hashValue);
1028     }
1029     return { errCode, hashValue };
1030 }
1031 
CheckCloudSchemaFields(const TableSchema & tableSchema,const TableSchema & oldSchema)1032 bool CloudStorageUtils::CheckCloudSchemaFields(const TableSchema &tableSchema, const TableSchema &oldSchema)
1033 {
1034     if (tableSchema.name != oldSchema.name) {
1035         return true;
1036     }
1037     for (const auto &oldField : oldSchema.fields) {
1038         auto it = std::find_if(tableSchema.fields.begin(), tableSchema.fields.end(),
1039             [&oldField](const std::vector<Field>::value_type &field) {
1040                 return oldField == field;
1041             });
1042         if (it == tableSchema.fields.end()) {
1043             return false;
1044         }
1045     }
1046     return true;
1047 }
1048 
TransferFieldToLower(VBucket & vBucket)1049 void CloudStorageUtils::TransferFieldToLower(VBucket &vBucket)
1050 {
1051     for (auto it = vBucket.begin(); it != vBucket.end();) {
1052         std::string lowerField(it->first.length(), ' ');
1053         std::transform(it->first.begin(), it->first.end(), lowerField.begin(), ::tolower);
1054         if (lowerField != it->first) {
1055             vBucket[lowerField] = std::move(vBucket[it->first]);
1056             vBucket.erase(it++);
1057         } else {
1058             it++;
1059         }
1060     }
1061 }
1062 
GetTypeCaseInsensitive(const std::string & fieldName,const VBucket & vBucket,Type & data)1063 bool CloudStorageUtils::GetTypeCaseInsensitive(const std::string &fieldName, const VBucket &vBucket, Type &data)
1064 {
1065     auto tmpFieldName = fieldName;
1066     auto tmpVBucket = vBucket;
1067     std::transform(tmpFieldName.begin(), tmpFieldName.end(), tmpFieldName.begin(), ::tolower);
1068     TransferFieldToLower(tmpVBucket);
1069     auto it = tmpVBucket.find(tmpFieldName);
1070     if (it == tmpVBucket.end()) {
1071         return false;
1072     }
1073     data = it->second;
1074     return true;
1075 }
1076 
BindUpdateLogStmtFromVBucket(const VBucket & vBucket,const TableSchema & tableSchema,const std::vector<std::string> & colNames,sqlite3_stmt * updateLogStmt)1077 int CloudStorageUtils::BindUpdateLogStmtFromVBucket(const VBucket &vBucket, const TableSchema &tableSchema,
1078     const std::vector<std::string> &colNames, sqlite3_stmt *updateLogStmt)
1079 {
1080     int index = 0;
1081     int errCode = E_OK;
1082     for (const auto &colName : colNames) {
1083         index++;
1084         if (colName == CloudDbConstant::GID_FIELD) {
1085             if (vBucket.find(colName) == vBucket.end()) {
1086                 LOGE("cloud data doesn't contain gid field when bind update log stmt.");
1087                 return -E_CLOUD_ERROR;
1088             }
1089             errCode = SQLiteUtils::BindTextToStatement(updateLogStmt, index,
1090                 std::get<std::string>(vBucket.at(colName)));
1091         } else if (colName == CloudDbConstant::MODIFY_FIELD) {
1092             if (vBucket.find(colName) == vBucket.end()) {
1093                 LOGE("cloud data doesn't contain modify field when bind update log stmt.");
1094                 return -E_CLOUD_ERROR;
1095             }
1096             errCode = SQLiteUtils::BindInt64ToStatement(updateLogStmt, index, std::get<int64_t>(vBucket.at(colName)));
1097         } else if (colName == CloudDbConstant::VERSION_FIELD) {
1098             if (vBucket.find(colName) == vBucket.end()) {
1099                 errCode = SQLiteUtils::BindTextToStatement(updateLogStmt, index, std::string(""));
1100             } else {
1101                 errCode = SQLiteUtils::BindTextToStatement(updateLogStmt, index,
1102                     std::get<std::string>(vBucket.at(colName)));
1103             }
1104         } else if (colName == CloudDbConstant::SHARING_RESOURCE_FIELD) {
1105             if (vBucket.find(colName) == vBucket.end()) {
1106                 errCode = SQLiteUtils::BindTextToStatement(updateLogStmt, index, std::string(""));
1107             } else {
1108                 errCode = SQLiteUtils::BindTextToStatement(updateLogStmt, index,
1109                     std::get<std::string>(vBucket.at(colName)));
1110             }
1111         } else {
1112             LOGE("invalid col name when bind value to update log statement.");
1113             return -E_INTERNAL_ERROR;
1114         }
1115         if (errCode != E_OK) {
1116             LOGE("fail to bind value to update log statement.");
1117             return errCode;
1118         }
1119     }
1120     return E_OK;
1121 }
1122 
GetUpdateRecordFlagSql(const std::string & tableName,bool recordConflict,const LogInfo & logInfo,const VBucket & uploadExtend,const CloudWaterType & type)1123 std::string CloudStorageUtils::GetUpdateRecordFlagSql(const std::string &tableName, bool recordConflict,
1124     const LogInfo &logInfo, const VBucket &uploadExtend, const CloudWaterType &type)
1125 {
1126     std::string compensatedBit = std::to_string(static_cast<uint32_t>(LogInfoFlag::FLAG_WAIT_COMPENSATED_SYNC));
1127     std::string consistentBit = std::to_string(static_cast<uint32_t>(LogInfoFlag::FLAG_DEVICE_CLOUD_CONSISTENCY));
1128     bool gidEmpty = logInfo.cloudGid.empty();
1129     bool isDeleted = logInfo.dataKey == DBConstant::DEFAULT_ROW_ID;
1130     std::string sql = "UPDATE " + DBCommon::GetLogTableName(tableName) + " SET flag = (CASE WHEN timestamp = ? THEN ";
1131     bool isNeedCompensated = recordConflict || DBCommon::IsNeedCompensatedForUpload(uploadExtend, type);
1132     if (isNeedCompensated && !(isDeleted && gidEmpty)) {
1133         sql += "flag | " + compensatedBit + " ELSE flag | " + compensatedBit;
1134     } else {
1135         sql += "flag & ~" + compensatedBit + " & ~" + consistentBit + " ELSE flag & ~" + compensatedBit;
1136     }
1137     sql += " END), status = (CASE WHEN status == 2 THEN 3 WHEN (status == 1 AND timestamp = ?) THEN 0 ELSE status END)";
1138     if (DBCommon::IsCloudRecordNotFound(uploadExtend) &&
1139         (type == CloudWaterType::UPDATE || type == CloudWaterType::DELETE)) {
1140         sql += ", cloud_gid = '', version = '' ";
1141     }
1142     sql += " WHERE ";
1143     if (!gidEmpty) {
1144         sql += " cloud_gid = '" + logInfo.cloudGid + "'";
1145     }
1146     if (!isDeleted) {
1147         if (!gidEmpty) {
1148             sql += " OR ";
1149         }
1150         sql += " data_key = '" + std::to_string(logInfo.dataKey) + "'";
1151     }
1152     if (gidEmpty && isDeleted) {
1153         sql += " hash_key = ?";
1154     }
1155     sql += ";";
1156     return sql;
1157 }
1158 
GetUpdateUploadFinishedSql(const std::string & tableName)1159 std::string CloudStorageUtils::GetUpdateUploadFinishedSql(const std::string &tableName)
1160 {
1161     std::string finishedBit = std::to_string(static_cast<uint32_t>(LogInfoFlag::FLAG_UPLOAD_FINISHED));
1162     std::string compensatedBit = std::to_string(static_cast<uint32_t>(LogInfoFlag::FLAG_WAIT_COMPENSATED_SYNC));
1163     // When the data flag is not in the compensation state and the local data does not change, the upload is finished.
1164     return "UPDATE " + DBCommon::GetLogTableName(tableName) + " SET flag = (CASE WHEN timestamp = ? AND flag & " +
1165         compensatedBit + " != " + compensatedBit + " THEN flag | " + finishedBit + " ELSE flag END) WHERE hash_key=?";
1166 }
1167 
BindStepConsistentFlagStmt(sqlite3_stmt * stmt,const VBucket & data,const std::set<std::string> & gidFilters)1168 int CloudStorageUtils::BindStepConsistentFlagStmt(sqlite3_stmt *stmt, const VBucket &data,
1169     const std::set<std::string> &gidFilters)
1170 {
1171     std::string gidStr;
1172     int errCode = CloudStorageUtils::GetValueFromVBucket(CloudDbConstant::GID_FIELD, data, gidStr);
1173     if (errCode != E_OK || gidStr.empty()) {
1174         LOGE("Get gid from bucket fail when mark flag as consistent, errCode = %d", errCode);
1175         return errCode;
1176     }
1177     if (gidStr.empty()) {
1178         LOGE("Get empty gid from bucket when mark flag as consistent.");
1179         return -E_CLOUD_ERROR;
1180     }
1181     // this data has not yet downloaded asset, skipping
1182     if (gidFilters.find(gidStr) != gidFilters.end()) {
1183         return E_OK;
1184     }
1185     errCode = SQLiteUtils::BindTextToStatement(stmt, 1, gidStr); // 1 is cloud_gid
1186     if (errCode != E_OK) {
1187         LOGE("Bind cloud_gid to mark flag as consistent stmt failed, %d", errCode);
1188         return errCode;
1189     }
1190     int64_t modifyTime;
1191     errCode = CloudStorageUtils::GetValueFromVBucket(CloudDbConstant::MODIFY_FIELD, data, modifyTime);
1192     if (errCode != E_OK) {
1193         LOGE("Get modify time from bucket fail when mark flag as consistent, errCode = %d", errCode);
1194         return errCode;
1195     }
1196     errCode = SQLiteUtils::BindInt64ToStatement(stmt, 2, modifyTime); // 2 is timestamp
1197     if (errCode != E_OK) {
1198         LOGE("Bind modify time to mark flag as consistent stmt failed, %d", errCode);
1199         return errCode;
1200     }
1201     errCode = SQLiteUtils::StepWithRetry(stmt);
1202     if (errCode == SQLiteUtils::MapSQLiteErrno(SQLITE_DONE)) {
1203         errCode = E_OK;
1204     } else {
1205         LOGE("[Storage Executor]Step mark flag as consistent stmt failed, %d", errCode);
1206     }
1207     return errCode;
1208 }
1209 
IsCloudGidMismatch(const std::string & downloadGid,const std::string & curGid)1210 bool CloudStorageUtils::IsCloudGidMismatch(const std::string &downloadGid, const std::string &curGid)
1211 {
1212     return !downloadGid.empty() && !curGid.empty() && downloadGid != curGid;
1213 }
1214 
IsGetCloudDataContinue(uint32_t curNum,uint32_t curSize,uint32_t maxSize,uint32_t maxCount)1215 bool CloudStorageUtils::IsGetCloudDataContinue(uint32_t curNum, uint32_t curSize, uint32_t maxSize, uint32_t maxCount)
1216 {
1217     if (curNum == 0) {
1218         return true;
1219     }
1220     if (curSize < maxSize && curNum < maxCount) {
1221         return true;
1222     }
1223     return false;
1224 }
1225 
IdentifyCloudType(const CloudUploadRecorder & recorder,CloudSyncData & cloudSyncData,VBucket & data,VBucket & log,VBucket & flags)1226 int CloudStorageUtils::IdentifyCloudType(const CloudUploadRecorder &recorder, CloudSyncData &cloudSyncData,
1227     VBucket &data, VBucket &log, VBucket &flags)
1228 {
1229     Bytes *hashKey = std::get_if<Bytes>(&flags[CloudDbConstant::HASH_KEY]);
1230     int64_t *timeStamp = std::get_if<int64_t>(&flags[CloudDbConstant::TIMESTAMP]);
1231     if (timeStamp == nullptr || hashKey == nullptr) {
1232         return -E_INVALID_DATA;
1233     }
1234     if (recorder.IsIgnoreUploadRecord(cloudSyncData.tableName, *hashKey, cloudSyncData.mode, *timeStamp)) {
1235         cloudSyncData.ignoredCount++;
1236         return -E_IGNORE_DATA;
1237     }
1238     return IdentifyCloudTypeInner(cloudSyncData, data, log, flags);
1239 }
1240 
IdentifyCloudTypeInner(CloudSyncData & cloudSyncData,VBucket & data,VBucket & log,VBucket & flags)1241 int CloudStorageUtils::IdentifyCloudTypeInner(CloudSyncData &cloudSyncData, VBucket &data, VBucket &log, VBucket &flags)
1242 {
1243     int64_t *rowid = std::get_if<int64_t>(&flags[CloudDbConstant::ROWID]);
1244     int64_t *flag = std::get_if<int64_t>(&flags[CloudDbConstant::FLAG]);
1245     int64_t *timeStamp = std::get_if<int64_t>(&flags[CloudDbConstant::TIMESTAMP]);
1246     Bytes *hashKey = std::get_if<Bytes>(&flags[CloudDbConstant::HASH_KEY]);
1247     int64_t *status = std::get_if<int64_t>(&flags[CloudDbConstant::STATUS]);
1248     if (rowid == nullptr || flag == nullptr || timeStamp == nullptr || hashKey == nullptr) {
1249         return -E_INVALID_DATA;
1250     }
1251     bool isDelete = ((static_cast<uint64_t>(*flag) & DataItem::DELETE_FLAG) != 0);
1252     bool isInsert = (!isDelete) && (log.find(CloudDbConstant::GID_FIELD) == log.end());
1253     if (status != nullptr && !isInsert && (CloudStorageUtils::IsDataLocked(*status))) {
1254         cloudSyncData.ignoredCount++;
1255         cloudSyncData.lockData.extend.push_back(log);
1256         cloudSyncData.lockData.hashKey.push_back(*hashKey);
1257         cloudSyncData.lockData.timestamp.push_back(*timeStamp);
1258         cloudSyncData.lockData.rowid.push_back(*rowid);
1259         return -E_IGNORE_DATA;
1260     }
1261     if (isDelete) {
1262         cloudSyncData.delData.record.push_back(data);
1263         cloudSyncData.delData.extend.push_back(log);
1264         cloudSyncData.delData.hashKey.push_back(*hashKey);
1265         cloudSyncData.delData.timestamp.push_back(*timeStamp);
1266         cloudSyncData.delData.rowid.push_back(*rowid);
1267     } else {
1268         if (data.empty()) {
1269             LOGE("The cloud data is empty, isInsert:%d", isInsert);
1270             return -E_INVALID_DATA;
1271         }
1272         if (IsAbnormalData(data)) {
1273             LOGW("This data is abnormal, ignore it when upload, isInsert:%d", isInsert);
1274             cloudSyncData.ignoredCount++;
1275             return -E_IGNORE_DATA;
1276         }
1277         CloudSyncBatch &opData = isInsert ? cloudSyncData.insData : cloudSyncData.updData;
1278         opData.record.push_back(data);
1279         opData.rowid.push_back(*rowid);
1280         VBucket asset;
1281         CloudStorageUtils::ObtainAssetFromVBucket(data, asset);
1282         opData.timestamp.push_back(*timeStamp);
1283         opData.assets.push_back(asset);
1284         if (isInsert) {
1285             log[CloudDbConstant::HASH_KEY_FIELD] = DBCommon::VectorToHexString(*hashKey);
1286         }
1287         opData.extend.push_back(log);
1288         opData.hashKey.push_back(*hashKey);
1289     }
1290     return E_OK;
1291 }
1292 
IsAbnormalData(const VBucket & data)1293 bool CloudStorageUtils::IsAbnormalData(const VBucket &data)
1294 {
1295     for (const auto &item : data) {
1296         const Asset *asset = std::get_if<TYPE_INDEX<Asset>>(&item.second);
1297         if (asset != nullptr) {
1298             if (asset->status == static_cast<uint32_t>(AssetStatus::ABNORMAL) ||
1299                 (asset->status & static_cast<uint32_t>(AssetStatus::DOWNLOAD_WITH_NULL)) != 0) {
1300                 return true;
1301             }
1302             continue;
1303         }
1304         const Assets *assets = std::get_if<TYPE_INDEX<Assets>>(&item.second);
1305         if (assets == nullptr) {
1306             continue;
1307         }
1308         for (const auto &oneAsset : *assets) {
1309             if (oneAsset.status == static_cast<uint32_t>(AssetStatus::ABNORMAL) ||
1310                 (oneAsset.status & static_cast<uint32_t>(AssetStatus::DOWNLOAD_WITH_NULL)) != 0) {
1311                 return true;
1312             }
1313         }
1314     }
1315     return false;
1316 }
1317 
GetDataItemFromCloudData(VBucket & data)1318 std::pair<int, DataItem> CloudStorageUtils::GetDataItemFromCloudData(VBucket &data)
1319 {
1320     std::pair<int, DataItem> res;
1321     auto &[errCode, dataItem] = res;
1322     GetBytesFromCloudData(CloudDbConstant::CLOUD_KV_FIELD_KEY, data, dataItem.key);
1323     GetBytesFromCloudData(CloudDbConstant::CLOUD_KV_FIELD_VALUE, data, dataItem.value);
1324     GetStringFromCloudData(CloudDbConstant::GID_FIELD, data, dataItem.gid);
1325     GetStringFromCloudData(CloudDbConstant::VERSION_FIELD, data, dataItem.version);
1326     GetStringFromCloudData(CloudDbConstant::CLOUD_KV_FIELD_DEVICE, data, dataItem.dev);
1327     GetStringFromCloudData(CloudDbConstant::CLOUD_KV_FIELD_ORI_DEVICE, data, dataItem.origDev);
1328     dataItem.flag = static_cast<uint64_t>(LogInfoFlag::FLAG_CLOUD_WRITE);
1329     GetUInt64FromCloudData(CloudDbConstant::CLOUD_KV_FIELD_DEVICE_CREATE_TIME, data, dataItem.writeTimestamp);
1330     GetUInt64FromCloudData(CloudDbConstant::MODIFY_FIELD, data, dataItem.modifyTime);
1331     errCode = GetUInt64FromCloudData(CloudDbConstant::CREATE_FIELD, data, dataItem.createTime);
1332     bool isSystemRecord = IsSystemRecord(dataItem.key);
1333     if (isSystemRecord) {
1334         dataItem.hashKey = dataItem.key;
1335         dataItem.flag |= static_cast<uint64_t>(LogInfoFlag::FLAG_SYSTEM_RECORD);
1336     } else if (!dataItem.key.empty()) {
1337         (void)DBCommon::CalcValueHash(dataItem.key, dataItem.hashKey);
1338     }
1339     return res;
1340 }
1341 
GetDataItemFromCloudVersionData(VBucket & data)1342 std::pair<int, DataItem> CloudStorageUtils::GetDataItemFromCloudVersionData(VBucket &data)
1343 {
1344     std::pair<int, DataItem> res;
1345     auto &[errCode, dataItem] = res;
1346     GetBytesFromCloudData(CloudDbConstant::CLOUD_KV_FIELD_KEY, data, dataItem.key);
1347     GetBytesFromCloudData(CloudDbConstant::CLOUD_KV_FIELD_VALUE, data, dataItem.value);
1348     errCode = GetStringFromCloudData(CloudDbConstant::CLOUD_KV_FIELD_DEVICE, data, dataItem.dev);
1349     return res;
1350 }
1351 
GetBytesFromCloudData(const std::string & field,VBucket & data,Bytes & bytes)1352 int CloudStorageUtils::GetBytesFromCloudData(const std::string &field, VBucket &data, Bytes &bytes)
1353 {
1354     std::string blobStr;
1355     int errCode = GetValueFromVBucket(field, data, blobStr);
1356     if (errCode != E_OK && errCode != -E_NOT_FOUND) {
1357         LOGE("[CloudStorageUtils] Get %.3s failed %d", field.c_str(), errCode);
1358         return errCode;
1359     }
1360     DBCommon::StringToVector(blobStr, bytes);
1361     return errCode;
1362 }
1363 
GetStringFromCloudData(const std::string & field,VBucket & data,std::string & str)1364 int CloudStorageUtils::GetStringFromCloudData(const std::string &field, VBucket &data, std::string &str)
1365 {
1366     int errCode = GetValueFromVBucket(field, data, str);
1367     if (errCode != E_OK && errCode != -E_NOT_FOUND) {
1368         LOGE("[CloudStorageUtils] Get %.3s failed %d", field.c_str(), errCode);
1369         return errCode;
1370     }
1371     return errCode;
1372 }
1373 
GetUInt64FromCloudData(const std::string & field,VBucket & data,uint64_t & number)1374 int CloudStorageUtils::GetUInt64FromCloudData(const std::string &field, VBucket &data, uint64_t &number)
1375 {
1376     int64_t intNum;
1377     int errCode = GetValueFromVBucket(field, data, intNum);
1378     if (errCode != E_OK && errCode != -E_NOT_FOUND) {
1379         LOGE("[CloudStorageUtils] Get %.3s failed %d", field.c_str(), errCode);
1380         return errCode;
1381     }
1382     number = static_cast<uint64_t>(intNum);
1383     return errCode;
1384 }
1385 
AddUpdateColForShare(const TableSchema & tableSchema,std::string & updateLogSql,std::vector<std::string> & updateColName)1386 void CloudStorageUtils::AddUpdateColForShare(const TableSchema &tableSchema, std::string &updateLogSql,
1387     std::vector<std::string> &updateColName)
1388 {
1389     updateLogSql += ", version = ?";
1390     updateColName.push_back(CloudDbConstant::VERSION_FIELD);
1391     updateLogSql += ", sharing_resource = ?";
1392     updateColName.push_back(CloudDbConstant::SHARING_RESOURCE_FIELD);
1393 }
1394 
IsDataLocked(uint32_t status)1395 bool CloudStorageUtils::IsDataLocked(uint32_t status)
1396 {
1397     return status == static_cast<uint32_t>(LockStatus::LOCK) ||
1398         status == static_cast<uint32_t>(LockStatus::LOCK_CHANGE);
1399 }
1400 
GetSystemRecordFromCloudData(VBucket & data)1401 std::pair<int, DataItem> CloudStorageUtils::GetSystemRecordFromCloudData(VBucket &data)
1402 {
1403     auto res = CloudStorageUtils::GetDataItemFromCloudData(data); // only record first one
1404     auto &[errCode, dataItem] = res;
1405     if (errCode != E_OK) {
1406         LOGE("[SqliteCloudKvExecutorUtils] Get data item failed %d", errCode);
1407         return res;
1408     }
1409     dataItem.dev = "";
1410     dataItem.origDev = "";
1411     return res;
1412 }
1413 
IsSystemRecord(const Key & key)1414 bool CloudStorageUtils::IsSystemRecord(const Key &key)
1415 {
1416     std::string prefixKey = CloudDbConstant::CLOUD_VERSION_RECORD_PREFIX_KEY;
1417     if (key.size() < prefixKey.size()) {
1418         return false;
1419     }
1420     std::string keyStr(key.begin(), key.end());
1421     return keyStr.find(prefixKey) == 0;
1422 }
1423 
GetSelectIncCursorSql(const std::string & tableName)1424 std::string CloudStorageUtils::GetSelectIncCursorSql(const std::string &tableName)
1425 {
1426     return "(SELECT value FROM " + DBCommon::GetMetaTableName() + " WHERE key=x'" +
1427         DBCommon::TransferStringToHex(DBCommon::GetCursorKey(tableName)) + "')";
1428 }
1429 
GetCursorIncSql(const std::string & tableName)1430 std::string CloudStorageUtils::GetCursorIncSql(const std::string &tableName)
1431 {
1432     return "UPDATE " + DBCommon::GetMetaTableName() + " SET value=value+1 WHERE key=x'" +
1433         DBCommon::TransferStringToHex(DBCommon::GetCursorKey(tableName)) + "';";
1434 }
1435 
GetCursorUpgradeSql(const std::string & tableName)1436 std::string CloudStorageUtils::GetCursorUpgradeSql(const std::string &tableName)
1437 {
1438     return "INSERT OR REPLACE INTO " + DBCommon::GetMetaTableName() + "(key,value) VALUES (x'" +
1439         DBCommon::TransferStringToHex(DBCommon::GetCursorKey(tableName)) + "', (SELECT CASE WHEN MAX(cursor) IS" +
1440         " NULL THEN 0 ELSE MAX(cursor) END FROM " + DBCommon::GetLogTableName(tableName) + "));";
1441 }
1442 
GetSyncQueryByPk(const std::string & tableName,const std::vector<VBucket> & data,bool isKv,QuerySyncObject & querySyncObject)1443 int CloudStorageUtils::GetSyncQueryByPk(const std::string &tableName, const std::vector<VBucket> &data, bool isKv,
1444     QuerySyncObject &querySyncObject)
1445 {
1446     std::map<std::string, size_t> dataIndex;
1447     std::map<std::string, std::vector<Type>> syncPk;
1448     int ignoreCount = 0;
1449     for (const auto &oneRow : data) {
1450         if (oneRow.size() >= 2u) { // mean this data has more than 2 pk
1451             LOGW("not support, size: %zu, table: %s", oneRow.size(), DBCommon::StringMiddleMasking(tableName).c_str());
1452             return -E_NOT_SUPPORT;
1453         }
1454         for (const auto &[col, value] : oneRow) {
1455             bool isFind = dataIndex.find(col) != dataIndex.end();
1456             if (!isFind && value.index() == TYPE_INDEX<Nil>) {
1457                 ignoreCount++;
1458                 continue;
1459             }
1460             if (!isFind && value.index() != TYPE_INDEX<Nil>) {
1461                 dataIndex[col] = value.index();
1462                 syncPk[col].push_back(value);
1463                 continue;
1464             }
1465             if (isFind && dataIndex[col] != value.index()) {
1466                 ignoreCount++;
1467                 continue;
1468             }
1469             syncPk[col].push_back(value);
1470         }
1471     }
1472     LOGI("match %zu data for compensated sync, ignore %d", data.size(), ignoreCount);
1473     Query query = Query::Select().From(tableName);
1474     if (isKv) {
1475         QueryUtils::FillQueryInKeys(syncPk, dataIndex, query);
1476     } else {
1477         for (const auto &[col, pkList] : syncPk) {
1478             QueryUtils::FillQueryIn(col, pkList, dataIndex[col], query);
1479         }
1480     }
1481     auto objectList = QuerySyncObject::GetQuerySyncObject(query);
1482     if (objectList.size() != 1u) { // only support one QueryExpression
1483         return -E_INTERNAL_ERROR;
1484     }
1485     querySyncObject = objectList[0];
1486     return E_OK;
1487 }
1488 }
1489