XByteArrayInputStream - A CPU and Memory Friendly XInputStream Implem…

[mangobatao]

OpenReplicator is using XDeserializer to parse the row data byte[] rowData (Update, Write and Delete).

final byte[] compressedRowData = is.readBytes(is.available());
final byte[] rowData = Snappy.uncompress(compressedRowData, 0, compressedRowData.length);
is = new XDeserializer(rowData);
is.setReadLimit(rowData.length);

The underlying implementation of XDeserializer is using XInputStreamImpl, which needs to allocate another byte array. I wrote an XByteArrayInputStream which will use ByteArrayInputStream and point to the input byte[] rowData instead of allocating a new one. This class will make the implementation of XInputStream more CPU and memory friendly.

[mangobatao]

@whitesock could you please help take a look?