in_memory_database.h revision 5821806d5e7f356e8fa4b058a389a808ea183019
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef CHROME_BROWSER_HISTORY_IN_MEMORY_DATABASE_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CHROME_BROWSER_HISTORY_IN_MEMORY_DATABASE_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/browser/history/url_database.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "sql/connection.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class FilePath; 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace history { 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Class used for a fast in-memory cache of typed URLs. Used for inline 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// autocomplete since it is fast enough to be called synchronously as the user 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// is typing. 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class InMemoryDatabase : public URLDatabase { 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) InMemoryDatabase(); 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~InMemoryDatabase(); 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Creates an empty in-memory database. 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool InitFromScratch(); 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Initializes the database by directly slurping the data from the given 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // file. Conceptually, the InMemoryHistoryBackend should do the populating 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // after this object does some common initialization, but that would be 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // much slower. 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool InitFromDisk(const FilePath& history_name); 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) protected: 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Implemented for URLDatabase. 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual sql::Connection& GetDB() OVERRIDE; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Initializes the database connection, this is the shared code between 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // InitFromScratch() and InitFromDisk() above. Returns true on success. 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool InitDB(); 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) sql::Connection db_; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(InMemoryDatabase); 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace history 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // CHROME_BROWSER_HISTORY_IN_MEMORY_DATABASE_H_ 50