Vincent Massol wrote: > On Aug 10, 2009, at 12:41 PM, Sergiu Dumitriu wrote: > >> Anamaria Stoica wrote: >>> It looks like you can bind an instance to type in Guice. This is >>> done either >>> with Instance Bindings, >>> @Provides Methods or Provider Bindings, depending on the complexity >>> of the >>> class. >>> (http://code.google.com/p/google-guice/wiki/Bindings) >>> >>> All bindings are defined in a class that extends AbstractModule, >>> this would >>> be >>> XWSocialModule in my code ( >>> https://svn.xwiki.org/svnroot/xwiki/sandbox/gsoc/opensocial/xwiki-social-opensocial/src/main/java/org/xwiki/opensocial/social/XWSocialModule.java) >>> >>> . >>> >>> >>> These modules are then passed as arguments to >>> Guice.createInjector(), which >>> builds the injector. >>> In my application, the injector is build by >>> GuiceServletContextListener ( >>> http://svn.apache.org/repos/asf/incubator/shindig/trunk/java/common/src/main/java/org/apache/shindig/common/servlet/GuiceServletContextListener.java) >>> This servlet takes the context parameters defined in my web.xml; >>> these are: >>> >>> <context-param> >>> <param-name>guice-modules</param-name> >>> <param-value> >>> org.apache.shindig.common.PropertiesModule: >>> org.apache.shindig.gadgets.DefaultGuiceModule: >>> org.apache.shindig.gadgets.oauth.OAuthModule: >>> org.apache.shindig.common.cache.ehcache.EhCacheModule: >>> org.xwiki.opensocial.social.XWSocialModule >>> </param-value> >>> </context-param> >>> >>> <listener> >>> >>> <listener- >>> class>org.xwiki.container.servlet.XWikiServletContextListener</ >>> listener-class> >>> </listener> >>> >>> Now, all I need to do is bind the instance of PersonServiceXW after >>> it has >>> been initialized by XWiki's Component Manager. >>> The binding will be done in XWSocialModule, using one of the instance >>> binding methods (Instance Bindings, >>> @Provides Methods or Provider Bindings). >>> >>> My questions are: >>> 1. How do I make sure PersonServiceXW has been initialized already >>> by the >>> XWiki CM before binding it for Guice ? >> List GuiceServletContextListener AFTER XWikiServletContextListener in >> web.xml. The servlet spec specifies that listeners are called in the >> order they are encountered in web.xml, and XWikiServletContextListener >> is the one that starts our component manager. > > For the future: we should not use other servlet context listener other > than the xwiki one. We need it to init the CM but once this is done > everything else should be done with it. > > So ideally you should instead create an EventListener that listen for > the application start event and initizalize shindig in there rather > than use an environment-specific servlet context listener.
I'm not sure, but I think that Shindig works this way, there's nothing we can do about it. > -Vincent > >>> 2. How do I get the initialized PersonServiceXW instance from >>> XWSocialModule? >> com.xpn.xwiki.web.Utils.getComponent(PersonServiceXW.class) -- Sergiu Dumitriu http://purl.org/net/sergiu/ _______________________________________________ devs mailing list [email protected] http://lists.xwiki.org/mailman/listinfo/devs
