Esempio n. 1
0
        public IntPtr GetValuePtr(int ordinal)
        {
            object       result = DBNull.Value;
            TDengineMeta meta   = _metas[ordinal];
            int          offset = IntPtr.Size * ordinal;

            return(Marshal.ReadIntPtr(rowdata, offset));
        }
Esempio n. 2
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        public IntPtr GetValuePtr(int ordinal)
        {
            object       result = DBNull.Value;
            TDengineMeta meta   = _metas[ordinal];
            int          offset = (Environment.Is64BitProcess?8:4) * ordinal;

            return(Marshal.ReadIntPtr(rowdata, offset));
        }
Esempio n. 3
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        /// <summary>
        ///     Gets the data type of the specified column.
        /// </summary>
        /// <param name="ordinal">The zero-based column ordinal.</param>
        /// <returns>The data type of the column.</returns>
        public override Type GetFieldType(int ordinal)
        {
            if (_metas == null || ordinal >= _metas.Count)
            {
                throw new InvalidOperationException($"DataReaderClosed{nameof(GetFieldType)}");
            }
            TDengineMeta meta = _metas[ordinal];
            Type         type = typeof(DBNull);

            switch ((TDengineDataType)meta.type)
            {
            case TDengineDataType.TSDB_DATA_TYPE_BOOL:
                type = typeof(bool);
                break;

            case TDengineDataType.TSDB_DATA_TYPE_TINYINT:
                type = typeof(byte);
                break;

            case TDengineDataType.TSDB_DATA_TYPE_SMALLINT:
                type = typeof(short);
                break;

            case TDengineDataType.TSDB_DATA_TYPE_INT:
                type = typeof(int);
                break;

            case TDengineDataType.TSDB_DATA_TYPE_BIGINT:
                type = typeof(long);
                break;

            case TDengineDataType.TSDB_DATA_TYPE_FLOAT:
                type = typeof(float);
                break;

            case TDengineDataType.TSDB_DATA_TYPE_DOUBLE:
                type = typeof(double);
                break;

            case TDengineDataType.TSDB_DATA_TYPE_BINARY:
                type = typeof(byte[]);
                break;

            case TDengineDataType.TSDB_DATA_TYPE_TIMESTAMP:
                type = typeof(long);
                break;

            case TDengineDataType.TSDB_DATA_TYPE_NCHAR:
                type = typeof(string);
                break;
            }

            return(type);
        }
Esempio n. 4
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        /// <summary>
        ///     Retrieves data as a Stream. If the reader includes rowid (or any of its aliases), a
        ///     <see cref="TaosBlob"/> is returned. Otherwise, the all of the data is read into memory and a
        ///     <see cref="MemoryStream"/> is returned.
        /// </summary>
        /// <param name="ordinal">The zero-based column ordinal.</param>
        /// <returns>The returned object.</returns>
        public override Stream GetStream(int ordinal)
        {
            MemoryStream result = null;
            TDengineMeta meta   = _metas[ordinal];
            int          offset = IntPtr.Size * ordinal;
            IntPtr       data   = Marshal.ReadIntPtr(rowdata, offset);

            if (data != IntPtr.Zero)
            {
                byte[] bf = new byte[meta.size];
                Marshal.Copy(data, bf, 0, meta.size);
                result = new MemoryStream(bf);
            }
            return(result);
        }
Esempio n. 5
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        /// <summary>
        ///     Gets the value of the specified column.
        /// </summary>
        /// <param name="ordinal">The zero-based column ordinal.</param>
        /// <returns>The value of the column.</returns>
        public override object GetValue(int ordinal)
        {
            object       result = DBNull.Value;
            TDengineMeta meta   = _metas[ordinal];
            int          offset = IntPtr.Size * ordinal;
            IntPtr       data   = Marshal.ReadIntPtr(rowdata, offset);

            if (data != IntPtr.Zero)
            {
                switch ((TDengineDataType)meta.type)
                {
                case TDengineDataType.TSDB_DATA_TYPE_BOOL:
                    bool v1 = Marshal.ReadByte(data) == 0 ? false : true;
                    result = v1;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_TINYINT:
                    sbyte v2s = (sbyte)Marshal.ReadByte(data);
                    result = v2s;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_UTINYINT:
                    byte v2 = Marshal.ReadByte(data);
                    result = v2;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_SMALLINT:
                    short v3 = Marshal.ReadInt16(data);
                    result = v3;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_USMALLINT:
                    ushort v12 = (ushort)Marshal.ReadInt16(data);
                    result = v12;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_INT:
                    int v4 = Marshal.ReadInt32(data);
                    result = v4;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_UINT:
                    uint v13 = (uint)Marshal.ReadInt32(data);
                    result = v13;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_BIGINT:
                    long v5 = Marshal.ReadInt64(data);
                    result = v5;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_UBIGINT:
                    ulong v14 = (ulong)Marshal.ReadInt64(data);
                    result = v14;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_FLOAT:
                    float v6 = (float)Marshal.PtrToStructure(data, typeof(float));
                    result = v6;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_DOUBLE:
                    double v7 = (double)Marshal.PtrToStructure(data, typeof(double));
                    result = v7;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_BINARY:
                {
                    result = Marshal.PtrToStringAnsi(data, meta.size)?.RemoveNull();
                }
                break;

                case TDengineDataType.TSDB_DATA_TYPE_TIMESTAMP:
                {
                    result = GetDateTimeFrom(data);
                }
                break;

                case TDengineDataType.TSDB_DATA_TYPE_NCHAR:
                {
                    string v10 = string.Empty;
                    if (meta.size > 0)        // https://github.com/maikebing/Maikebing.EntityFrameworkCore.Taos/issues/99
                    {
                        byte[] bf = new byte[meta.size];
                        Marshal.Copy(data, bf, 0, meta.size);

                        if (IsUTF8Bytes(bf) || (bf[0] == 0xEF && bf[1] == 0xBB && bf[2] == 0xBF))
                        {
                            v10 = System.Text.Encoding.UTF8.GetString(bf)?.RemoveNull();
                        }
                        else
                        {
                            v10 = System.Text.Encoding.GetEncoding(936).GetString(bf)?.RemoveNull();
                        }
                    }
                    result = v10;
                }
                break;
                }
            }
            else
            {
                result = DBNull.Value;
            }
            return(result);
        }
Esempio n. 6
0
        /// <summary>
        ///     Gets the value of the specified column.
        /// </summary>
        /// <param name="ordinal">The zero-based column ordinal.</param>
        /// <returns>The value of the column.</returns>
        public override object GetValue(int ordinal)
        {
            object       result = DBNull.Value;
            TDengineMeta meta   = _metas[ordinal];
            int          offset = IntPtr.Size * ordinal;
            IntPtr       data   = Marshal.ReadIntPtr(rowdata, offset);

            if (data != IntPtr.Zero)
            {
                switch ((TDengineDataType)meta.type)
                {
                case TDengineDataType.TSDB_DATA_TYPE_BOOL:
                    bool v1 = Marshal.ReadByte(data) == 0 ? false : true;
                    result = v1;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_TINYINT:
                    byte v2 = Marshal.ReadByte(data);
                    result = v2;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_SMALLINT:
                    short v3 = Marshal.ReadInt16(data);
                    result = v3;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_INT:
                    int v4 = Marshal.ReadInt32(data);
                    result = v4;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_BIGINT:
                    long v5 = Marshal.ReadInt64(data);
                    result = v5;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_FLOAT:
                    float v6 = (float)Marshal.PtrToStructure(data, typeof(float));
                    result = v6;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_DOUBLE:
                    double v7 = (double)Marshal.PtrToStructure(data, typeof(double));
                    result = v7;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_BINARY:
                {
                    byte[] buffer = new byte[meta.size];
                    Marshal.Copy(data, buffer, 0, meta.size);
                    result = buffer;
                }
                break;

                case TDengineDataType.TSDB_DATA_TYPE_TIMESTAMP:
                    long v9 = Marshal.ReadInt64(data);
                    result = v9;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_NCHAR:
                    string v10 = Marshal.PtrToStringAnsi(data);
                    result = v10;
                    break;
                }
            }
            else
            {
                result = DBNull.Value;
            }
            return(result);
        }
        /// <summary>
        ///     Gets the value of the specified column.
        /// </summary>
        /// <param name="ordinal">The zero-based column ordinal.</param>
        /// <returns>The value of the column.</returns>
        public override object GetValue(int ordinal)
        {
            object       result = DBNull.Value;
            TDengineMeta meta   = _metas[ordinal];
            int          offset = IntPtr.Size * ordinal;
            IntPtr       data   = Marshal.ReadIntPtr(rowdata, offset);

            if (data != IntPtr.Zero)
            {
                switch ((TDengineDataType)meta.type)
                {
                case TDengineDataType.TSDB_DATA_TYPE_BOOL:
                    bool v1 = Marshal.ReadByte(data) == 0 ? false : true;
                    result = v1;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_TINYINT:
                    byte v2 = Marshal.ReadByte(data);
                    result = v2;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_SMALLINT:
                    short v3 = Marshal.ReadInt16(data);
                    result = v3;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_INT:
                    int v4 = Marshal.ReadInt32(data);
                    result = v4;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_BIGINT:
                    long v5 = Marshal.ReadInt64(data);
                    result = v5;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_FLOAT:
                    float v6 = (float)Marshal.PtrToStructure(data, typeof(float));
                    result = v6;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_DOUBLE:
                    double v7 = (double)Marshal.PtrToStructure(data, typeof(double));
                    result = v7;
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_BINARY:
                {
                    result = Marshal.PtrToStringAnsi(data, meta.size)?.RemoveNull();
                }
                break;

                case TDengineDataType.TSDB_DATA_TYPE_TIMESTAMP:
                    var v9 = new   DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).AddMilliseconds(Marshal.ReadInt64(data));
                    result = v9.ToLocalTime();
                    break;

                case TDengineDataType.TSDB_DATA_TYPE_NCHAR:
                    string v10 = Marshal.PtrToStringUni(data, meta.size)?.RemoveNull();
                    result = v10;
                    break;
                }
            }
            else
            {
                result = DBNull.Value;
            }
            return(result);
        }