On Mon, Sep 29, 2008 at 9:25 AM, my_forum <[EMAIL PROTECTED]> wrote: > > Guys, > could anyone give me an example of usage message selectors with Message > Driven beans? > I want to process my messages by priority so I think using selectors will be > a correct choice. > Has somebody implemented messages processing by priority using MDBs?
Filtering on properties is one way to weed out the messages you're seeking. I've used it many times in the past with much success. The message selector syntax supports a subset of SQL 92 and the selector is typically defined in the EJB deployment descriptor. There are examples of this in the Java EE docs. Depending on the Java EE version you're using and the container you're using, below are the URLs: http://java.sun.com/j2ee/1.4/docs/tutorial/doc/MDB.html http://java.sun.com/javaee/5/docs/tutorial/doc/bnbpk.html Also, check out the sample chapter on MDBs from Richard Monson-Haefel's EJB book available here: http://www.onjava.com/pub/a/onjava/excerpt/ejb3_ch13/index.html Also note that instead of creating message-driven beans that require a Java EE container, you can also create message-driven POJOs by using only the Spring Framework: http://blog.springsource.com/2006/08/11/message-driven-pojos/ Bruce -- perl -e 'print unpack("u30","D0G)[EMAIL PROTECTED]&5R\"F)R=6-E+G-N>61E<D\!G;6%I;\"YC;VT*" );' Apache ActiveMQ - http://activemq.org/ Apache Camel - http://activemq.org/camel/ Apache ServiceMix - http://servicemix.org/ Blog: http://bruceblog.org/
