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1 // Copyright 2017 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef COMPONENTS_HISTORY_CORE_BROWSER_TYPED_URL_SYNC_METADATA_DATABASE_H_ | |
6 #define COMPONENTS_HISTORY_CORE_BROWSER_TYPED_URL_SYNC_METADATA_DATABASE_H_ | |
7 | |
8 #include "base/macros.h" | |
9 #include "components/sync/base/model_type.h" | |
10 #include "components/sync/model/metadata_batch.h" | |
11 #include "sql/meta_table.h" | |
12 | |
13 namespace sql { | |
14 class Connection; | |
15 } | |
16 | |
17 namespace history { | |
18 | |
19 // A sync metadata database needs to maintain two tables: entity metadata table | |
20 // and datatype state table. Entity metadata table contains metadata(sync | |
21 // states) for each url. Datatype state table contains the state of typed url | |
22 // datatype. | |
23 class TypedURLSyncMetadataDatabase { | |
24 public: | |
25 // Must call InitVisitTable() before using to make sure the database is | |
26 // initialized. | |
27 TypedURLSyncMetadataDatabase(); | |
28 virtual ~TypedURLSyncMetadataDatabase(); | |
29 | |
30 // Read all the stored metadata for typed URL and fill |metadata_batch| | |
31 // with it. | |
32 bool GetAllSyncMetadata(syncer::MetadataBatch* metadata_batch); | |
33 | |
34 // Update the metadata row for typed URL, keyed by |storage_key|, to | |
35 // contain the contents of |metadata|. | |
36 bool UpdateSyncMetadata(const std::string& storage_key, | |
brettw
2017/03/20 17:27:06
I was expecting the types here would match the dat
Gang Wu
2017/03/20 21:34:48
Actually, I am think about make those functions as
| |
37 const sync_pb::EntityMetadata& metadata); | |
38 | |
39 // Remove the metadata row of typed URL keyed by |storage_key|. | |
40 bool ClearSyncMetadata(const std::string& storage_key); | |
41 | |
42 // Update the stored sync state for the typed URL. | |
43 bool UpdateModelTypeState(const sync_pb::ModelTypeState& model_type_state); | |
44 | |
45 // Clear the stored sync state for typed URL. | |
46 bool ClearModelTypeState(); | |
47 | |
48 protected: | |
49 // Returns the database for the functions in this interface. | |
50 virtual sql::Connection& GetDB() = 0; | |
51 | |
52 // Called by the derived classes on initialization to make sure the tables | |
53 // and indices are properly set up. Must be called before anything else. | |
54 bool InitSyncTable(); | |
55 | |
56 sql::MetaTable* GetMetaTable() { return &meta_table_; } | |
57 | |
58 private: | |
59 // Read all sync_pb::EntityMetadata for typed URL and fill | |
60 // |metadata_records| with it. | |
61 bool GetAllSyncEntityMetadata(syncer::EntityMetadataMap* metadata_records); | |
62 | |
63 // Read sync_pb::ModelTypeState for typed URL and fill |state| with it. | |
64 bool GetModelTypeState(sync_pb::ModelTypeState* state); | |
65 | |
66 // Own by this class, but initialed by HistoryDatabase. | |
67 // Check if meta_table_->GetVersionNumber() is greater than 0 to make sure | |
68 // meta_table_ is initialed. | |
69 sql::MetaTable meta_table_; | |
70 | |
71 DISALLOW_COPY_AND_ASSIGN(TypedURLSyncMetadataDatabase); | |
72 }; | |
73 | |
74 } // namespace history | |
75 | |
76 #endif // COMPONENTS_HISTORY_CORE_BROWSER_TYPED_URL_SYNC_METADATA_DATABASE_H_ | |
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