-----Original Message----- > From: Gordon Sim [mailto:[email protected]] > Sent: Thursday, September 29, 2011 12:49 PM > To: [email protected] > Subject: Re: two set of APIs, which one to use? > > On 09/29/2011 04:54 PM, Gang, Litao wrote: > > I have a general question on the qpid API. In the examples provided > > with releases, there are old_api and messaging folders. The former > > uses qpid::client APIs for message and message operations while the > > latter support sender/Receiver patterns, closer to the java JMS > > interface. Currently oldApi is still needed for pub/sub usage. Can > > anybody shed some lights on which APIs should be used? Is it likely > > that the qpid::client APIs get retired in the future (named old, so > > not encouraged to use)? I am asking because we want to cut the > > future upgrade work to the minimum. > > The recommended API is qpid::messaging. > > The qpid::client API is tied to version 0-10 of AMQP and the level > abstraction make it harder to offer some valuable functionality > (automatic reply of messages for example) in a transparent manner. > > The qpid::messaging API is designed to be protocol version agnostic, > meaning you will be able to transition in a straightforward manner to > AMQP 1.0 (the final version of which has now been published). > > It is certainly possible to do pub-sub with the qpid::messaging API. > All > you generally need to do is use an exchange name with an optional > subject as the address for senders/receivers. > > For example, I can create a topic exchange named my-exchange, then > create a receiver using e.g. my-exchange/my-subject, then a sender with > my-exchange/mysubject and messages from the latter will reach all > matching receivers. > > You can read more about using the messaging API at > http://qpid.apache.org/books/0.12/Programming-In-Apache-Qpid/html/. >
Many thanks, Gordon. I am doing the asynchronous mechanism, i.e. when a message arrives, a callback automatically gets called. How can you do that with the messaging API? I don't want to initiate a call to fetch a messages. This I don't know exactly how to do. Cheers. This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email. --------------------------------------------------------------------- Apache Qpid - AMQP Messaging Implementation Project: http://qpid.apache.org Use/Interact: mailto:[email protected]
