Move core/platform/sql into modules/webdatabase

Source/core/platform/sql/SQLiteDatabase.h

-/*
- * 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 SQLiteDatabase_h
-#define SQLiteDatabase_h
-
-#include "wtf/Threading.h"
-#include "wtf/ThreadingPrimitives.h"
-#include "wtf/text/CString.h"
-#include "wtf/text/WTFString.h"
-
-#if COMPILER(MSVC)
-#pragma warning(disable: 4800)
-#endif
-
-struct sqlite3;
-
-namespace WebCore {
-
-class DatabaseAuthorizer;
-class SQLiteStatement;
-class SQLiteTransaction;
-
-extern const int SQLResultDone;
-extern const int SQLResultError;
-extern const int SQLResultOk;
-extern const int SQLResultRow;
-extern const int SQLResultSchema;
-extern const int SQLResultFull;
-extern const int SQLResultInterrupt;
-extern const int SQLResultConstraint;
-
-class SQLiteDatabase {
-    WTF_MAKE_NONCOPYABLE(SQLiteDatabase);
-    friend class SQLiteTransaction;
-public:
-    SQLiteDatabase();
-    ~SQLiteDatabase();
-
-    bool open(const String& filename, bool forWebSQLDatabase = false);
-    bool isOpen() const { return m_db; }
-    void close();
-    void interrupt();
-    bool isInterrupted();
-
-    void updateLastChangesCount();
-
-    bool executeCommand(const String&);
-    bool returnsAtLeastOneResult(const String&);
-
-    bool tableExists(const String&);
-    void clearAllTables();
-    int runVacuumCommand();
-    int runIncrementalVacuumCommand();
-
-    bool transactionInProgress() const { return m_transactionInProgress; }
-
-    int64_t lastInsertRowID();
-    int lastChanges();
-
-    void setBusyTimeout(int ms);
-    void setBusyHandler(int(*)(void*, int));
-
-    void setFullsync(bool);
-
-    // Gets/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.
-    int64_t maximumSize();
-    void setMaximumSize(int64_t);
-
-    // Gets the number of unused bytes in the database file.
-    int64_t freeSpaceSize();
-    int64_t totalSize();
-
-    // The SQLite SYNCHRONOUS pragma can be either FULL, NORMAL, or OFF
-    // FULL - Any writing calls to the DB block until the data is actually on the disk surface
-    // NORMAL - SQLite pauses at some critical moments when writing, but much less than FULL
-    // OFF - Calls return immediately after the data has been passed to disk
-    enum SynchronousPragma { SyncOff = 0, SyncNormal = 1, SyncFull = 2 };
-    void setSynchronous(SynchronousPragma);
-
-    int lastError();
-    const char* lastErrorMsg();
-
-    sqlite3* sqlite3Handle() const {
-        ASSERT(m_sharable || currentThread() == m_openingThread || !m_db);
-        return m_db;
-    }
-
-    void setAuthorizer(PassRefPtr<DatabaseAuthorizer>);
-
-    Mutex& databaseMutex() { return m_lockingMutex; }
-    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 { AutoVacuumNone = 0, AutoVacuumFull = 1, AutoVacuumIncremental = 2 };
-    bool turnOnIncrementalAutoVacuum();
-
-    // Set this flag to allow access from multiple threads.  Not all multi-threaded accesses are safe!
-    // See http://www.sqlite.org/cvstrac/wiki?p=MultiThreading for more info.
-#ifndef NDEBUG
-    void disableThreadingChecks();
-#else
-    void disableThreadingChecks() {}
-#endif
-
-private:
-    static int authorizerFunction(void*, int, const char*, const char*, const char*, const char*);
-
-    void enableAuthorizer(bool enable);
-
-    int pageSize();
-
-    sqlite3* m_db;
-    int m_pageSize;
-
-    bool m_transactionInProgress;
-    bool m_sharable;
-
-    Mutex m_authorizerLock;
-    RefPtr<DatabaseAuthorizer> m_authorizer;
-
-    Mutex m_lockingMutex;
-    ThreadIdentifier m_openingThread;
-
-    Mutex m_databaseClosingMutex;
-    bool m_interrupted;
-
-    int m_openError;
-    CString m_openErrorMessage;
-
-    int m_lastChangesCount;
-};
-
-} // namespace WebCore
-
-#endif