Index: app/sql/meta_table.h |
diff --git a/app/sql/meta_table.h b/app/sql/meta_table.h |
deleted file mode 100644 |
index d5c76c825dd61b51954c7eff3862f0a8eb8ede36..0000000000000000000000000000000000000000 |
--- a/app/sql/meta_table.h |
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-// Copyright (c) 2009 The Chromium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#ifndef APP_SQL_META_TABLE_H_ |
-#define APP_SQL_META_TABLE_H_ |
-#pragma once |
- |
-#include <string> |
- |
-#include "base/basictypes.h" |
- |
-namespace sql { |
- |
-class Connection; |
-class Statement; |
- |
-class MetaTable { |
- public: |
- MetaTable(); |
- ~MetaTable(); |
- |
- // Returns true if the 'meta' table exists. |
- static bool DoesTableExist(Connection* db); |
- |
- // Initializes the MetaTableHelper, creating the meta table if necessary. For |
- // new tables, it will initialize the version number to |version| and the |
- // compatible version number to |compatible_version|. |
- bool Init(Connection* db, int version, int compatible_version); |
- |
- // Resets this MetaTable object, making another call to Init() possible. |
- void Reset(); |
- |
- // The version number of the database. This should be the version number of |
- // the creator of the file. The version number will be 0 if there is no |
- // previously set version number. |
- // |
- // See also Get/SetCompatibleVersionNumber(). |
- void SetVersionNumber(int version); |
- int GetVersionNumber(); |
- |
- // The compatible version number is the lowest version of the code that this |
- // database can be read by. If there are minor changes or additions, old |
- // versions of the code can still work with the database without failing. |
- // |
- // For example, if an optional column is added to a table in version 3, the |
- // new code will set the version to 3, and the compatible version to 2, since |
- // the code expecting version 2 databases can still read and write the table. |
- // |
- // Rule of thumb: check the version number when you're upgrading, but check |
- // the compatible version number to see if you can read the file at all. If |
- // it's larger than you code is expecting, fail. |
- // |
- // The compatible version number will be 0 if there is no previously set |
- // compatible version number. |
- void SetCompatibleVersionNumber(int version); |
- int GetCompatibleVersionNumber(); |
- |
- // Set the given arbitrary key with the given data. Returns true on success. |
- bool SetValue(const char* key, const std::string& value); |
- bool SetValue(const char* key, int value); |
- bool SetValue(const char* key, int64 value); |
- |
- // Retrieves the value associated with the given key. This will use sqlite's |
- // type conversion rules. It will return true on success. |
- bool GetValue(const char* key, std::string* value); |
- bool GetValue(const char* key, int* value); |
- bool GetValue(const char* key, int64* value); |
- |
- private: |
- // Conveniences to prepare the two types of statements used by |
- // MetaTableHelper. |
- bool PrepareSetStatement(Statement* statement, const char* key); |
- bool PrepareGetStatement(Statement* statement, const char* key); |
- |
- Connection* db_; |
- |
- DISALLOW_COPY_AND_ASSIGN(MetaTable); |
-}; |
- |
-} // namespace sql |
- |
-#endif // APP_SQL_META_TABLE_H_ |