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| 1 // Copyright 2014 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_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_DATABASE_H_ | |
| 6 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_DATABASE_H_ | |
| 7 | |
| 8 #include <memory> | |
| 9 | |
| 10 #include "base/macros.h" | |
| 11 #include "base/time/time.h" | |
| 12 #include "components/password_manager/core/browser/affiliation_utils.h" | |
| 13 | |
| 14 namespace base { | |
| 15 class FilePath; | |
| 16 } // namespace base | |
| 17 | |
| 18 namespace sql { | |
| 19 class Connection; | |
| 20 class Statement; | |
| 21 } // namespace sql | |
| 22 | |
| 23 namespace password_manager { | |
| 24 | |
| 25 // Stores equivalence classes of facets, i.e., facets that are affiliated with | |
| 26 // each other, in an SQLite database. See affiliation_utils.h for a more | |
| 27 // detailed definition of what this means. | |
| 28 // | |
| 29 // Under the assumption that there is most likely not much the caller can do in | |
| 30 // case of database errors, most methods silently ignore them. Nevertheless, the | |
| 31 // caller must plan ahead for this rare but non-negligible scenario, and expect | |
| 32 // that in odd cases basic database invariants will not hold. | |
| 33 class AffiliationDatabase { | |
| 34 public: | |
| 35 AffiliationDatabase(); | |
| 36 ~AffiliationDatabase(); | |
| 37 | |
| 38 // Opens an existing database at |path|, or creates a new one if none exists, | |
| 39 // and returns true on success. | |
| 40 bool Init(const base::FilePath& path); | |
| 41 | |
| 42 // Looks up the equivalence class containing |facet_uri|, and returns true if | |
| 43 // such a class is found, in which case it is also stored into |result|. | |
| 44 bool GetAffiliationsForFacet(const FacetURI& facet_uri, | |
| 45 AffiliatedFacetsWithUpdateTime* result) const; | |
| 46 | |
| 47 // Retrieves all stored equivalence classes. | |
| 48 void GetAllAffiliations( | |
| 49 std::vector<AffiliatedFacetsWithUpdateTime>* results) const; | |
| 50 | |
| 51 // Removes the stored equivalence class, if any, containing |facet_uri|. | |
| 52 void DeleteAffiliationsForFacet(const FacetURI& facet_uri); | |
| 53 | |
| 54 // Removes stored equivalence classes that were last updated before the | |
| 55 // |cutoff_threshold|. | |
| 56 void DeleteAffiliationsOlderThan(const base::Time& cutoff_threshold); | |
| 57 | |
| 58 // Removes all records from all tables of the database. | |
| 59 void DeleteAllAffiliations(); | |
| 60 | |
| 61 // Stores the equivalence class defined by |affiliated_facets| to the DB and | |
| 62 // returns true unless it has a non-empty subset with a preexisting class, in | |
| 63 // which case no changes are made and the function returns false. | |
| 64 bool Store(const AffiliatedFacetsWithUpdateTime& affiliated_facets); | |
| 65 | |
| 66 // Stores the equivalence class defined by |affiliated_facets| to the DB, | |
| 67 // database, and removes any other equivalence classes that are in conflict | |
| 68 // with |affiliated_facets|, i.e. those that are neither equal nor disjoint to | |
| 69 // it. Removed equivalence classes are stored into |removed_affiliations|. | |
| 70 void StoreAndRemoveConflicting( | |
| 71 const AffiliatedFacetsWithUpdateTime& affiliated_facets, | |
| 72 std::vector<AffiliatedFacetsWithUpdateTime>* removed_affiliations); | |
| 73 | |
| 74 // Deletes the database file at |path| along with all its auxiliary files. The | |
| 75 // database must be closed before calling this. | |
| 76 static void Delete(const base::FilePath& path); | |
| 77 | |
| 78 private: | |
| 79 // Creates any tables and indices that do not already exist in the database. | |
| 80 bool CreateTablesAndIndicesIfNeeded(); | |
| 81 | |
| 82 // Called when SQLite encounters an error. | |
| 83 void SQLErrorCallback(int error_number, sql::Statement* statement); | |
| 84 | |
| 85 // The SQL connection to the database. | |
| 86 std::unique_ptr<sql::Connection> sql_connection_; | |
| 87 | |
| 88 DISALLOW_COPY_AND_ASSIGN(AffiliationDatabase); | |
| 89 }; | |
| 90 | |
| 91 } // namespace password_manager | |
| 92 | |
| 93 #endif // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_DATABASE_H_ | |
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