2009/3/22 chenta lee <che...@gmail.com>: > Yes, what I mean is the concept of message selector, not how we implement > it. And Xquery is mush more powerful than SQL-92 syntax.By MQ, I refer to > Message Queue instead of a particular message queue project.
OK. xquery may be semantically richer but the JMS message selector functionality operates on message headers not message bodies. Selecting on headers will be hugely faster than on the body. There are clear use cases for both. > I am a little confused about how could my patches related to patent issue? I am not sure of the details of exactly what Red Hat has patented (I have not read the patent text myself). However the Red Hat people are on this mailing list so I am sure they will be able to clarify. From what I have read, the patent covers an AMQP exchange that implements xquery which is not what you are describing. RG --------------------------------------------------------------------- Apache Qpid - AMQP Messaging Implementation Project: http://qpid.apache.org Use/Interact: mailto:dev-subscr...@qpid.apache.org
