Martin:
What you're describing appears to the ECM container. This is now handled by the Excalibur project. http://excalibur.apache.org Cheers, Steve. > -----Original Message----- > From: MArtin Schumacher [mailto:[EMAIL PROTECTED] > Sent: 27 August 2004 10:18 > To: [EMAIL PROTECTED] > Subject: Excalibur Component Lookup > > Hi everyone, > > I hope someon can help me in here. > We are using a pretty old part of avalon: an about 2 years old version > of the excalibur-project. We just use the component lookup to have a > loose coupling. This wors pretty fine the last years. > > But now we want to make it possible that one component can choose the > other component with hints. But we got the following Exception and have > no idea what to do now... > > The Exception: > ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ > org.apache.avalon.framework.component.ComponentException: > UnnamedSelector: ComponentSelector could not find the component for > hint: entega > ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ > > The roles-definition: > ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ > <role name="mypackage.MyStrategySubServiceInterfaceSelector" > shorthand="myStrategySubService" > default- > class="org.apache.avalon.excalibur.component.ExcaliburComponentSelector" > > <hint shorthand="entega" > class="mypackage.EntegaSubServiceImpl"/> > <hint shorthand="entegaTest" > class="mypackage.EntegaTestSubServiceImpl"/> > </role> > ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ > > The usage: > ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ > cs = (ComponentSelector) > cm.lookup(MyStrategySubServiceInterface.ROLE+"Selector"); > > strategy = (MyStrategySubServiceInterface) cs.select("entega"); > strategy.doIt(); > cs.release(strategy); > ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ > > The ComponentManager initialization: > ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ > this.componentManager = new ExcaliburComponentManager(); > SAXParserFactory factory = SAXParserFactory.newInstance(); > XMLReader reader = factory.newSAXParser().getXMLReader(); > > this.loggeravalon = > Hierarchy.getDefaultHierarchy().getLoggerFor("main"); > this.componentManager.setLogger(this.loggeravalon); > > // now configure it... > Configuration roleConfig = null; > > SAXConfigurationHandler b = new SAXConfigurationHandler(); > InputStream inputStream = this.getClass().getClassLoader(). > getResourceAsStream(this.rolesfilename); > > InputSource is = new InputSource(inputStream); > > reader.setContentHandler(b); > reader.parse(is); > > roleConfig = b.getConfiguration(); > > DefaultRoleManager drm = new DefaultRoleManager(); > drm.setLogger(this.loggeravalon); > drm.configure(roleConfig); > roleConfig = null; > > this.componentManager.setRoleManager(drm); > > Configuration conf = null; > try { > b = new SAXConfigurationHandler(); > inputStream = this.getClass().getClassLoader(). > getResourceAsStream("application/config.xml"); > is = new InputSource(inputStream); > > reader.setContentHandler(b); > reader.parse(is); > > conf = b.getConfiguration(); > this.componentManager.configure(conf); > } catch (java.net.MalformedURLException malex) { > logger.info("cannot load confix.xml. proceeding without..."); > } > // and finished > this.componentManager.initialize(); > ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ 8< ------ > > Really hope, that someone can help me! > > MArtin > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
