GetKey() public method

Retrieves the Key of the current item
This method wraps the native ups_cursor_move function.
Returns the key of the current Database item. Throws UpsConst.UPS_CURSOR_IS_NIL if the Cursor does not point to any item.
/// /// /// if the Cursor does not point to any item /// ///
public GetKey ( ) : byte[]
return byte[]
Cursor Class Documentation
示例#1
0
        private void InsertNegative()
        {
            Cursor c = new Cursor(db);
            byte[] q;
            byte[] k1 = new byte[5]; k1[0] = 5;
            byte[] r1 = new byte[5]; r1[0] = 1;
            byte[] r2 = new byte[5]; r2[0] = 2;
            c.Insert(k1, r1);
            q = c.GetRecord();
            checkEqual(r1, q);
            q = c.GetKey();
            checkEqual(k1, q);

            try {
                c.Insert(k1, r2);
            }
            catch (DatabaseException e) {
                Assert.AreEqual(UpsConst.UPS_DUPLICATE_KEY, e.ErrorCode);
            }
        }
示例#2
0
        private void InsertDuplicate()
        {
            Cursor c = new Cursor(db);
            byte[] q;
            byte[] k1 = new byte[5]; k1[0] = 5;
            byte[] r1 = new byte[5]; r1[0] = 1;
            byte[] r2 = new byte[5]; r2[0] = 2;
            c.Insert(k1, r1);
            q = c.GetRecord();
            checkEqual(r1, q);
            q = c.GetKey();
            checkEqual(k1, q);

            c.Insert(k1, r2, UpsConst.UPS_DUPLICATE);
            q = c.GetRecord();
            checkEqual(r2, q);
            q = c.GetKey();
            checkEqual(k1, q);
        }
示例#3
0
 private void GetKey()
 {
     Cursor c = new Cursor(db);
     byte[] k = new byte[5];
     byte[] r = new byte[5];
     db.Insert(k, r);
     c.MovePrevious();
     byte[] f = c.GetKey();
     checkEqual(k, f);
 }
示例#4
0
        private void Insert()
        {
            Cursor c = new Cursor(db);
            byte[] q;
            byte[] k1 = new byte[5]; k1[0] = 5;
            byte[] k2 = new byte[5]; k2[0] = 6;
            byte[] r1 = new byte[5]; r1[0] = 1;
            byte[] r2 = new byte[5]; r2[0] = 2;
            c.Insert(k1, r1);
            q = c.GetRecord();
            checkEqual(r1, q);
            q = c.GetKey();
            checkEqual(k1, q);

            c.Insert(k2, r2);
            q = c.GetRecord();
            checkEqual(r2, q);
            q = c.GetKey();
            checkEqual(k2, q);
        }
示例#5
0
        private void Cursor10000Test()
        {
            //create database
            Upscaledb.Environment env = new Upscaledb.Environment();
            env.Create("ntest.db");

            Parameter[] param = new Parameter[1];
            param[0] = new Parameter();
            param[0].name = UpsConst.UPS_PARAM_KEY_TYPE;
            param[0].value = UpsConst.UPS_TYPE_UINT64;
            Database db = env.CreateDatabase(1, 0, param);

            //insert records
            for (ulong i = 0; i < 10000; i++)
            {
                byte[] key = BitConverter.GetBytes(i);
                byte[] record = new byte[20];
                db.Insert(key, record);
            }

            //close database
            db.Close();

            //reopen again
            db = env.OpenDatabase(1);
            Cursor cursor = new Cursor(db);

            cursor.MoveFirst();
            ulong firstKey = BitConverter.ToUInt64(cursor.GetKey(), 0);
            Assert.AreEqual((ulong)0, firstKey);

            cursor.MoveLast();
            ulong lastKey = BitConverter.ToUInt64(cursor.GetKey(), 0);
            Assert.AreEqual((ulong)9999, lastKey);

            //close database
            cursor.Close();
            db.Close();
            env.Close();
        }