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/*
* Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 THIRD_PARTY_BLINK_RENDERER_MODULES_WEBDATABASE_SQLITE_SQLITE_DATABASE_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBDATABASE_SQLITE_SQLITE_DATABASE_H_
#include "base/macros.h"
#include "build/build_config.h"
#include "third_party/blink/renderer/platform/heap/persistent.h"
#include "third_party/blink/renderer/platform/wtf/text/cstring.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/blink/renderer/platform/wtf/threading.h"
#include "third_party/blink/renderer/platform/wtf/threading_primitives.h"
#if defined(COMPILER_MSVC)
#pragma warning(disable : 4800)
#endif
struct sqlite3;
namespace blink {
class DatabaseAuthorizer;
class SQLiteTransaction;
extern const int kSQLResultDone;
extern const int kSQLResultOk;
extern const int kSQLResultRow;
extern const int kSQLResultFull;
extern const int kSQLResultInterrupt;
extern const int kSQLResultConstraint;
class SQLiteDatabase {
DISALLOW_NEW();
friend class SQLiteTransaction;
public:
SQLiteDatabase();
~SQLiteDatabase();
bool Open(const String& filename);
bool IsOpen() const { return db_; }
void Close();
void UpdateLastChangesCount();
bool ExecuteCommand(const String&);
bool TableExists(const String&);
int RunVacuumCommand();
int RunIncrementalVacuumCommand();
bool TransactionInProgress() const { return transaction_in_progress_; }
int64_t LastInsertRowID();
int LastChanges();
void SetBusyTimeout(int ms);
// Sets the maximum size in bytes.
// Depending on per-database attributes, the size will only be settable in
// units that are the page size of the database, which is established at
// creation. These chunks will never be anything other than 512, 1024, 2048,
// 4096, 8192, 16384, or 32768 bytes in size. setMaximumSize() will round the
// size down to the next smallest chunk if the passed size doesn't align.
void SetMaximumSize(int64_t);
// Gets the number of unused bytes in the database file.
int64_t FreeSpaceSize();
int64_t TotalSize();
int LastError();
const char* LastErrorMsg();
sqlite3* Sqlite3Handle() const {
#if DCHECK_IS_ON()
DCHECK_EQ(sharable_ || CurrentThread(), opening_thread_ || !db_);
#endif
return db_;
}
void SetAuthorizer(DatabaseAuthorizer*);
bool IsAutoCommitOn() const;
// The SQLite AUTO_VACUUM pragma can be either NONE, FULL, or INCREMENTAL.
// NONE - SQLite does not do any vacuuming
// FULL - SQLite moves all empty pages to the end of the DB file and truncates
// the file to remove those pages after every transaction. This option
// requires SQLite to store additional information about each page in
// the database file.
// INCREMENTAL - SQLite stores extra information for each page in the database
// file, but removes the empty pages only when PRAGMA
// INCREMANTAL_VACUUM is called.
enum AutoVacuumPragma {
kAutoVacuumNone = 0,
kAutoVacuumFull = 1,
kAutoVacuumIncremental = 2
};
bool TurnOnIncrementalAutoVacuum();
void Trace(blink::Visitor* visitor) {}
private:
static int AuthorizerFunction(void*,
int,
const char*,
const char*,
const char*,
const char*);
void EnableAuthorizer(bool enable);
int PageSize();
sqlite3* db_;
int page_size_;
bool transaction_in_progress_;
#if DCHECK_IS_ON()
bool sharable_;
#endif
Mutex authorizer_lock_;
CrossThreadPersistent<DatabaseAuthorizer> authorizer_;
ThreadIdentifier opening_thread_;
Mutex database_closing_mutex_;
int open_error_;
CString open_error_message_;
int last_changes_count_;
DISALLOW_COPY_AND_ASSIGN(SQLiteDatabase);
};
} // namespace blink
#endif
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