示例#1
0
        private static void SetBytes_FromReader(SmiEventSink_Default sink, SmiTypedGetterSetter setters, int ordinal, SmiMetaData metaData, DbDataReader reader, int offset) {
            int length = 0;

            // Deal with large values by sending bufferLength of NoLengthLimit (== assume 
            //  CheckXetParameters will ignore requested-length checks in this case)
            length = CheckXetParameters(metaData.SqlDbType, metaData.MaxLength, NoLengthLimit /* actual */, 0, NoLengthLimit /* buffer length */, offset, NoLengthLimit /* requested length */ );

            // Use fixed chunk size for all cases to avoid inquiring from reader.
            int chunkSize = __maxByteChunkSize;

            byte[] buffer = new byte[ chunkSize ];
            long bytesRead;
            long bytesWritten = 1;  // prime value to get into write loop
            long currentOffset = offset;
            long lengthWritten = 0;

            while ((length < 0  || lengthWritten < length) &&
                    0 != (bytesRead = reader.GetBytes(ordinal, currentOffset, buffer, 0, chunkSize)) &&
                    0 != bytesWritten) {
                bytesWritten = setters.SetBytes(sink, ordinal, currentOffset, buffer, 0, checked((int) bytesRead));
                sink.ProcessMessagesAndThrow();
                checked{ currentOffset += bytesWritten; }
                checked{ lengthWritten += bytesWritten; }
            }

            // Make sure to trim any left-over data (remember to trim at end of offset, not just the amount written
            setters.SetBytesLength(sink, ordinal, currentOffset);
            sink.ProcessMessagesAndThrow();
        }
 private static void SetBytes_FromReader(SmiEventSink_Default sink, SmiTypedGetterSetter setters, int ordinal, SmiMetaData metaData, DbDataReader reader, int offset)
 {
     long num6;
     int num4 = 0;
     num4 = CheckXetParameters(metaData.SqlDbType, metaData.MaxLength, -1L, 0L, -1, offset, -1);
     int length = 0x1f40;
     byte[] buffer = new byte[length];
     long num2 = 1L;
     long dataOffset = offset;
     for (long i = 0L; ((num4 < 0) || (i < num4)) && ((0L != (num6 = reader.GetBytes(ordinal, dataOffset, buffer, 0, length))) && (0L != num2)); i += num2)
     {
         num2 = setters.SetBytes(sink, ordinal, dataOffset, buffer, 0, (int) num6);
         sink.ProcessMessagesAndThrow();
         dataOffset += num2;
     }
     setters.SetBytesLength(sink, ordinal, dataOffset);
     sink.ProcessMessagesAndThrow();
 }