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Posted to dev@qpid.apache.org by "Rob Godfrey (JIRA)" <ji...@apache.org> on 2012/09/14 17:28:07 UTC
[jira] [Resolved] (QPID-3285) AMQShortString needs only be used in
a transport layer for 0.8/0.9.x AMQP protocol implementations.
[ https://issues.apache.org/jira/browse/QPID-3285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rob Godfrey resolved QPID-3285.
-------------------------------
Resolution: Later
> AMQShortString needs only be used in a transport layer for 0.8/0.9.x AMQP protocol implementations.
> ---------------------------------------------------------------------------------------------------
>
> Key: QPID-3285
> URL: https://issues.apache.org/jira/browse/QPID-3285
> Project: Qpid
> Issue Type: Improvement
> Components: Java Broker, Java Client, Java Common
> Reporter: Alex Rudyy
> Priority: Minor
> Labels: derbystore
>
> Current implementation of AMQShortString does not deal properly with unicode characters. Each character of the string is converted into a single byte using the following transformation
> (byte) (0xFF & data[i])
> In result of such transformation multi-byte characters can not be passed over the wire with 0.8/0.9.x AMQP protocol implementations.
> AMQP 0.10 transport layer does not have such issue because it does not use string byte buffers from AMQShortString objects.
> AMQP 1.0 specification does not declare short string type. So, current implementation of AMQShortString can not be used to implement AMQP 1.0 specification. For implementing of AMQP 1.0 specification java.lang.String class can be used.
> Current broker and client implementations use AMQShortString classes everywhere, including JMS layer, message store layer etc.
> Usages of AMQShortString beyond 0.8/0.9.x transport layers should be replaced with java.lang.String class. Only 0.8/0.9.x transport layers require AMQShortString for keeping backward compatibility.
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