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. -Vincent >> 2. How do I get the initialized PersonServiceXW instance from >> XWSocialModule? > > com.xpn.xwiki.web.Utils.getComponent(PersonServiceXW.class) _______________________________________________ devs mailing list [email protected] http://lists.xwiki.org/mailman/listinfo/devs
