1 // Copyright 2013 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_PRECACHE_CORE_PRECACHE_URL_TABLE_H_ 6 #define COMPONENTS_PRECACHE_CORE_PRECACHE_URL_TABLE_H_ 7 8 #include <map> 9 10 #include "base/basictypes.h" 11 #include "base/time/time.h" 12 #include "url/gurl.h" 13 14 namespace sql { 15 class Connection; 16 } 17 18 namespace precache { 19 20 // Interface for database table that keeps track of the URLs that have been 21 // precached but not used. Each row in this table represents a URL that was 22 // precached over the network, and has not been fetched through user browsing 23 // since then. Manages one table { URL (primary key), precache timestamp }. 24 class PrecacheURLTable { 25 public: 26 PrecacheURLTable(); 27 ~PrecacheURLTable(); 28 29 // Initialize the precache URL table for use with the specified database 30 // connection. The caller keeps ownership of |db|, and |db| must not be NULL. 31 // Init must be called before any other methods. 32 bool Init(sql::Connection* db); 33 34 // Adds a precached URL to the table, using the current time as the 35 // precache timestamp. Replaces the row if one already exists. 36 void AddURL(const GURL& url, const base::Time& precache_time); 37 38 // Returns true if this URL exists in the table. 39 bool HasURL(const GURL& url); 40 41 // Deletes the row from the table that has the given URL, if it exists. 42 void DeleteURL(const GURL& url); 43 44 // Deletes entries that were precached before the time of |delete_end|. 45 void DeleteAllPrecachedBefore(const base::Time& delete_end); 46 47 // Used by tests to get the contents of the table. 48 void GetAllDataForTesting(std::map<GURL, base::Time>* map); 49 50 private: 51 bool CreateTableIfNonExistent(); 52 53 // Non-owned pointer. 54 sql::Connection* db_; 55 56 DISALLOW_COPY_AND_ASSIGN(PrecacheURLTable); 57 }; 58 59 } // namespace precache 60 61 #endif // COMPONENTS_PRECACHE_CORE_PRECACHE_URL_TABLE_H_ 62