On 4/4/06, vik Dhawan <[EMAIL PROTECTED]> wrote: > I see a interface called MessageQuery, i dont see any implimentation to this > inteface i would like to know what is its role in the activeMQ.
Its used by the QueryBasedSubscriptionRecoveryPolicy to allow arbitrary initial messages to be created and dispatched to a consumer when a subscription starts. e.g. to read out the initial state of a system from a database or something. Topics are often used to publish updates to state as the system runs; this hook allows you to send the initial state to a consumer when it starts up. > i would like to understand class XQueryExpression also i may be able the > documentation. This class isn't fully implemented yet - its idea is to support XQuery based selectors; so far only XPath selectors are implemented. -- James ------- http://radio.weblogs.com/0112098/
