Exemplo n.º 1
0
 internal static bool Equals(SqlCollation collation, uint info, byte sortId)
 {
     if (collation is not null)
     {
         return(collation._info == info && collation._sortId == sortId);
     }
     return(false);
 }
 internal static bool AreSame(SqlCollation a, SqlCollation b)
 {
     if (a == null || b == null)
     {
         return(a == b);
     }
     else
     {
         return(a.info == b.info && a.sortId == b.sortId);
     }
 }
Exemplo n.º 3
0
 internal static bool Equals(SqlCollation a, SqlCollation b)
 {
     if (a == null || b == null)
     {
         return(a == b);
     }
     else
     {
         return(a._info == b._info && a._sortId == b._sortId);
     }
 }
        internal void Clear()
        {
            type      = 0;
            oldLength = 0;
            newLength = 0;
            length    = 0;
            newValue  = null;
            oldValue  = null;
            if (newBinValue != null)
            {
                Array.Clear(newBinValue, 0, newBinValue.Length);
                if (newBinRented)
                {
                    ArrayPool <byte> .Shared.Return(newBinValue);
                }

                newBinValue = null;
            }
            if (oldBinValue != null)
            {
                Array.Clear(oldBinValue, 0, oldBinValue.Length);
                if (oldBinRented)
                {
                    ArrayPool <byte> .Shared.Return(oldBinValue);
                }
                oldBinValue = null;
            }
            newBinRented   = false;
            oldBinRented   = false;
            newLongValue   = 0;
            oldLongValue   = 0;
            newCollation   = null;
            oldCollation   = null;
            newRoutingInfo = null;
            Next           = null;
        }
Exemplo n.º 5
0
        // valid for character types: Char, VarChar, Text, NChar, NVarChar, NText
        internal void SetString(string value, int offset, int length)
        {
            Debug.Assert(
                SmiXetterAccessMap.IsSetterAccessValid(_metaData, SmiXetterTypeCode.XetString));

            // ANSI types must convert to byte[] because that's the tool we have.
            if (MetaDataUtilsSmi.IsAnsiType(_metaData.SqlDbType))
            {
                byte[] bytes;
                // Optimize for common case of writing entire string
                if (offset == 0 && value.Length <= length)
                {
                    bytes = _stateObj.Parser._defaultEncoding.GetBytes(value);
                }
                else
                {
                    char[] chars = value.ToCharArray(offset, length);
                    bytes = _stateObj.Parser._defaultEncoding.GetBytes(chars);
                }
                SetBytes(0, bytes, 0, bytes.Length);
                SetBytesLength(bytes.Length);
            }
            else if (SqlDbType.Variant == _metaData.SqlDbType)
            {
                Debug.Assert(null != _variantType && SqlDbType.NVarChar == _variantType.SqlDbType, "Invalid variant type");

                SqlCollation collation = new SqlCollation();
                collation.LCID = checked ((int)_variantType.LocaleId);
                collation.SqlCompareOptions = _variantType.CompareOptions;

                if (length * ADP.CharSize > TdsEnums.TYPE_SIZE_LIMIT)   // send as varchar for length greater than 4000
                {
                    byte[] bytes;
                    // Optimize for common case of writing entire string
                    if (offset == 0 && value.Length <= length)
                    {
                        bytes = _stateObj.Parser._defaultEncoding.GetBytes(value);
                    }
                    else
                    {
                        bytes = _stateObj.Parser._defaultEncoding.GetBytes(value.ToCharArray(offset, length));
                    }
                    _stateObj.Parser.WriteSqlVariantHeader(9 + bytes.Length, TdsEnums.SQLBIGVARCHAR, 7, _stateObj);
                    _stateObj.Parser.WriteUnsignedInt(collation.info, _stateObj); // propbytes: collation.Info
                    _stateObj.WriteByte(collation.sortId);                        // propbytes: collation.SortId
                    _stateObj.Parser.WriteShort(bytes.Length, _stateObj);         // propbyte: varlen
                    _stateObj.WriteByteArray(bytes, bytes.Length, 0);
                }
                else
                {
                    _stateObj.Parser.WriteSqlVariantHeader(9 + length * ADP.CharSize, TdsEnums.SQLNVARCHAR, 7, _stateObj);
                    _stateObj.Parser.WriteUnsignedInt(collation.info, _stateObj);  // propbytes: collation.Info
                    _stateObj.WriteByte(collation.sortId);                         // propbytes: collation.SortId
                    _stateObj.Parser.WriteShort(length * ADP.CharSize, _stateObj); // propbyte: varlen
                    _stateObj.Parser.WriteString(value, length, offset, _stateObj);
                }
                _variantType = null;
            }
            else if (_isPlp)
            {
                // Send the string as a complete PLP chunk.
                _stateObj.Parser.WriteLong(length * ADP.CharSize, _stateObj);   // PLP total length
                _stateObj.Parser.WriteInt(length * ADP.CharSize, _stateObj);    // Chunk length
                _stateObj.Parser.WriteString(value, length, offset, _stateObj); // Data
                if (length != 0)
                {
                    _stateObj.Parser.WriteInt(TdsEnums.SQL_PLP_CHUNK_TERMINATOR, _stateObj); // Terminator
                }
            }
            else
            {
                _stateObj.Parser.WriteShort(length * ADP.CharSize, _stateObj);
                _stateObj.Parser.WriteString(value, length, offset, _stateObj);
            }
        }