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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CHROME_BROWSER_WEBDATA_WEB_DATABASE_TABLE_H_ | 5 #ifndef CHROME_BROWSER_WEBDATA_WEB_DATABASE_TABLE_H_ |
6 #define CHROME_BROWSER_WEBDATA_WEB_DATABASE_TABLE_H_ | 6 #define CHROME_BROWSER_WEBDATA_WEB_DATABASE_TABLE_H_ |
7 | 7 |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 | 9 |
10 namespace sql { | 10 namespace sql { |
11 class Connection; | 11 class Connection; |
12 class MetaTable; | 12 class MetaTable; |
13 } | 13 } |
14 | 14 |
15 // An abstract base class representing a table within a WebDatabase. | 15 // An abstract base class representing a table within a WebDatabase. |
16 // Each table should subclass this, adding type-specific methods as needed. | 16 // Each table should subclass this, adding type-specific methods as needed. |
17 class WebDatabaseTable { | 17 class WebDatabaseTable { |
18 protected: | 18 public: |
19 WebDatabaseTable(sql::Connection* db, sql::MetaTable* meta_table); | 19 WebDatabaseTable(sql::Connection* db, sql::MetaTable* meta_table); |
20 virtual ~WebDatabaseTable(); | 20 virtual ~WebDatabaseTable(); |
21 | 21 |
22 // Attempts to initialize the table and returns true if successful. | 22 // Attempts to initialize the table and returns true if successful. |
23 virtual bool Init() = 0; | 23 virtual bool Init() = 0; |
24 | 24 |
25 // In order to encourage developers to think about sync when adding or | 25 // In order to encourage developers to think about sync when adding or |
26 // or altering new tables, this method must be implemented. Please get in | 26 // or altering new tables, this method must be implemented. Please get in |
27 // contact with the sync team if you believe you're making a change that they | 27 // contact with the sync team if you believe you're making a change that they |
28 // should be aware of (or if you could break something). | 28 // should be aware of (or if you could break something). |
29 // TODO(andybons): Implement something more robust. | 29 // TODO(andybons): Implement something more robust. |
30 virtual bool IsSyncable() = 0; | 30 virtual bool IsSyncable() = 0; |
31 | 31 |
| 32 // Migrates this table to |version|. Returns false if there was |
| 33 // migration work to do and it failed, true otherwise. |
| 34 // |
| 35 // |app_locale| is the locale of the app. Passed as a parameter as |
| 36 // |it can only be safely queried on the UI thread. |
| 37 // |
| 38 // Implementations may set |*update_compatible_version| to true if |
| 39 // the compatible version should be changed to |version|. |
| 40 // Implementations should otherwise not modify this parameter. |
| 41 virtual bool MigrateToVersion(int version, |
| 42 const std::string& app_locale, |
| 43 bool* update_compatible_version) = 0; |
| 44 |
| 45 protected: |
32 sql::Connection* db_; | 46 sql::Connection* db_; |
33 sql::MetaTable* meta_table_; | 47 sql::MetaTable* meta_table_; |
34 | 48 |
35 private: | 49 private: |
36 DISALLOW_COPY_AND_ASSIGN(WebDatabaseTable); | 50 DISALLOW_COPY_AND_ASSIGN(WebDatabaseTable); |
37 }; | 51 }; |
38 | 52 |
39 #endif // CHROME_BROWSER_WEBDATA_WEB_DATABASE_TABLE_H_ | 53 #endif // CHROME_BROWSER_WEBDATA_WEB_DATABASE_TABLE_H_ |
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