コード例 #1
0
    private static void TestCsharpSqlite()
    {
        SQLiteDatabase db;
        SQLiteVdbe     stmt;
        SQLiteVdbe     c1, c2;

        bool found;
        int  i;

        string databaseName = "Benchmark_cs-SQLite.sqlite";

        if (File.Exists(databaseName))
        {
            File.Delete(databaseName);
        }

        db = new SQLiteDatabase(databaseName);
        for (i = 0; i < PRAGMA_Commands.Length; i++)
        {
            db.ExecuteNonQuery(PRAGMA_Commands[i]);
        }

        db.ExecuteNonQuery("BEGIN EXCLUSIVE");
        for (i = 0; i < CREATE_Commands.Length; i++)
        {
            db.ExecuteNonQuery(CREATE_Commands[i]);
        }
        stmt = new SQLiteVdbe(db, INSERT_Command);
        long start = DateTime.Now.Ticks;
        long key   = 1999;

        for (i = 0; i < nRecords; i++)
        {
            key = (3141592621L * key + 2718281829L) % 1000000007L;
            stmt.Reset();
            stmt.BindLong(1, key);
            stmt.BindText(2, key.ToString());
            stmt.ExecuteStep();
        }
        stmt.Close();
        db.ExecuteNonQuery("END");
        timer[1, 0] = DateTime.Now.Ticks - start;

        db.ExecuteNonQuery("BEGIN EXCLUSIVE");
        start = DateTime.Now.Ticks;
        c1    = new SQLiteVdbe(db, SELECT_Bind_i);
        c2    = new SQLiteVdbe(db, SELECT_Bind_s);
        key   = 1999;
        for (i = 0; i < nRecords; i++)
        {
            key = (3141592621L * key + 2718281829L) % 1000000007L;
            c1.Reset();
            c1.BindLong(1, key);
            c1.ExecuteStep();

            c2.Reset();
            c2.BindText(1, key.ToString());
            c2.ExecuteStep();

            long id = (long)c1.Result_Long(0);
            Debug.Assert(id == (long)c2.Result_Long(0));
        }
        c1.Close();
        c2.Close();
        db.ExecuteNonQuery("END");
        timer[1, 1] = DateTime.Now.Ticks - start;

        db.ExecuteNonQuery("BEGIN EXCLUSIVE");
        start = DateTime.Now.Ticks;
        key   = Int64.MinValue;
        i     = 0;
        c1    = new SQLiteVdbe(db, SELECT_Command_i);
        while (c1.ExecuteStep() != Sqlite3.SQLITE_DONE)
        {
            long intKey = (long)c1.Result_Long(0);
            Debug.Assert(intKey >= key);
            key = intKey;
            i  += 1;
        }
        c1.Close();
        Debug.Assert(i == nRecords);

        String strKey = "";

        i  = 0;
        c2 = new SQLiteVdbe(db, SELECT_Command_s);
        while (c2.ExecuteStep() != Sqlite3.SQLITE_DONE)
        {
            string recStrKey = (string)c2.Result_Text(1);
            Debug.Assert(recStrKey.CompareTo(strKey) >= 0);
            strKey = recStrKey;
            i     += 1;
        }
        c2.Close();
        Debug.Assert(i == nRecords);
        timer[1, 2] = DateTime.Now.Ticks - start;
        db.ExecuteNonQuery("END");

        db.ExecuteNonQuery("BEGIN EXCLUSIVE");
        start = DateTime.Now.Ticks;
        key   = 1999;
        stmt  = new SQLiteVdbe(db, DELETE_Bind);
        for (i = 0; i < nRecords; i++)
        {
            key = (3141592621L * key + 2718281829L) % 1000000007L;
            stmt.Reset();
            stmt.BindLong(1, key);
            stmt.ExecuteStep();
        }
        stmt.Close();
        db.ExecuteNonQuery("END");
        timer[1, 3] = DateTime.Now.Ticks - start;
        db.CloseDatabase();
#if NET_35
        Sqlite3.Shutdown();
#else
        Sqlite3.sqlite3_shutdown();
#endif
    }