On Mon, Aug 10, 2009 at 2:51 PM, Vincent Massol <vinc...@massol.net> wrote:
> > On Aug 10, 2009, at 1:31 PM, Sergiu Dumitriu wrote: > > > 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. > > Just checked > > http://svn.apache.org/repos/asf/incubator/shindig/trunk/java/common/src/main/java/org/apache/shindig/common/servlet/GuiceServletContextListener.java > > It doesn't do much, just init Guice in a few lines. The important part is creating the injector: Injector injector = Guice.createInjector(Stage.PRODUCTION, modules); I don't know how setting/registering the context part works though. > > > Thanks > -Vincent > > >> -Vincent > >> > >>>> 2. How do I get the initialized PersonServiceXW instance from > >>>> XWSocialModule? > >>> com.xpn.xwiki.web.Utils.getComponent(PersonServiceXW.class) > _______________________________________________ > devs mailing list > devs@xwiki.org > http://lists.xwiki.org/mailman/listinfo/devs > _______________________________________________ devs mailing list devs@xwiki.org http://lists.xwiki.org/mailman/listinfo/devs
