[weld-issues] [JBoss JIRA] (WELD-718) register Weld Servlet listener in web fragment

register Weld Servlet listener in web fragment ---------------------------------------------- Key: WELD-718 URL: https://issues.jboss.org/browse/WELD-718 Project: Weld Issue Type: Feature Request Components: Servlet Container Support Affects Versions: 1.1.0.Beta1 Reporter: Dan Allen Priority: Minor Fix For: 1.2.0.Beta1 Instead of making the developer add the Weld Servle listener in their web.xml when using weld-servlet, might we consider registering it for them automatically but including it in a web.xml fragment or TLD that's bundled in weld-servlet.jar? The benefit of using the TLD is that it would work in pre-Servlet 3.0 environments. META-INF/web-fragment.xml <web-fragment xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-fragment_3_0.xsd" version="3.0"> <listener> <listener-class>org.jboss.weld.environment.servlet.Listener</listener-class> </listener> </web-fragment> META-INF/weld.tld <taglib xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-jsptaglibrary_2_0.xsd" version="2.0"> <description> An empty tag library that registers a listener to bootstrap Weld in a Servlet container. </description> <tlib-version>1.0</tlib-version> <short-name>w</short-name> <uri>http://jboss.org/weld</uri> <!-- This ServletContextListener initializes the runtime environment of the CDI Reference Implementation (Weld) when a web application including it is initialized by the container. --> <listener> <listener-class>org.jboss.weld.environment.servlet.Listener</listener-class> </listener> </taglib> Btw, we are already including other automatic configurations, such as a JSF phase listener and view handler (META-INF/faces-config.xml). If we require ordering, that leans more to web-fragment.xml as a solution, since it's possible to have ordering control. There is no guarantee as to when a listener will load that's defined in a TLD (the advantage is only for non-Servlet 3.0 containers). Given that Weld is a new programming model and likely to be used with newer containers, then I'd say we should go with web-fragment.xml. (Worse case scenario is we introduce a classifier for weld-servlet that will be for pre-Servlet 3.0 environments. Something like org.jboss.weld.servlet:weld-servlet:1.1:pre-servlet-3)