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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CHROME_BROWSER_HISTORY_ARCHIVED_DATABASE_H__
#define CHROME_BROWSER_HISTORY_ARCHIVED_DATABASE_H__
#include "base/basictypes.h"
#include "chrome/browser/history/download_database.h"
#include "chrome/browser/history/url_database.h"
#include "chrome/browser/history/visit_database.h"
#include "chrome/browser/meta_table_helper.h"
struct sqlite3;
namespace history {
// Encapsulates the database operations for archived history.
//
// IMPORTANT NOTE: The IDs in this system for URLs and visits will be
// different than those in the main database. This is to eliminate the
// dependency between them so we can deal with each one on its own.
class ArchivedDatabase : public URLDatabase,
public VisitDatabase {
public:
// Must call Init() before using other members.
ArchivedDatabase();
virtual ~ArchivedDatabase();
// Initializes the database connection. This must return true before any other
// functions on this class are called.
bool Init(const std::wstring& file_name);
// Transactions on the database. We support nested transactions and only
// commit when the outermost one is committed (sqlite doesn't support true
// nested transactions).
void BeginTransaction();
void CommitTransaction();
private:
// Implemented for the specialized databases.
virtual sqlite3* GetDB();
virtual SqliteStatementCache& GetStatementCache();
// The database.
//
// The close scoper will free the database and delete the statement cache in
// the correct order automatically when we are destroyed.
DBCloseScoper db_closer_;
sqlite3* db_;
SqliteStatementCache* statement_cache_;
// The number of nested transactions currently in progress.
int transaction_nesting_;
MetaTableHelper meta_table_;
DISALLOW_EVIL_CONSTRUCTORS(ArchivedDatabase);
};
} // namespace history
#endif // CHROME_BROWSER_HISTORY_ARCHIVED_DATABASE_H__
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