[DERBY-5210] Use java.nio.ByteBuffer in client.net.Request

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 10.9.1.0
• Fix Version/s: 10.9.1.0
• Component/s: Network Client
• Labels: derby_backport_reject_10_8
• Assignee: Knut Anders Hatlen
• Reporter: Knut Anders Hatlen
• Created: 29/Apr/11 10:53
• Updated: 30/Jun/11 09:21
• Resolved: 13/May/11 13:44

Description

We should see if we could use a java.nio.ByteBuffer instead of a byte array in org.apache.derby.client.net.Request, similar to what we did for DDMWriter in DERBY-2936. ByteBuffer provides some helper methods that allows us to simplify the code that puts multi-byte values into the buffer (like ByteBuffer.putShort(), putInt(), putLong()). It may also be a first step on the way to using a CharsetEncoder to encode strings without going via an intermediate throw-away byte array (see DERBY-5068 for details).

Issue Links

• relates to: DERBY-2936 Use java.nio.ByteBuffer for buffering in DDMWriter
• relates to: DERBY-5068 Investigate increased CPU usage on client after introduction of UTF-8 CcsidManager