[seam-issues] [JBoss JIRA] Commented: (JBSEAM-1583) seam:component intercept uses Seam standard rules by default

Gaurav Saini (JIRA) jira-events at lists.jboss.org
Wed Mar 31 08:56:37 EDT 2010 

    [ https://jira.jboss.org/jira/browse/JBSEAM-1583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12523085#action_12523085 ] 

Gaurav Saini commented on JBSEAM-1583:
--------------------------------------

Mike, I have already tried this option. The static field for @Logger works but not as per my requirement. I have injected @Logger in one of my Base class. I need that whenever a method of the base class is invoked the logger should be injected properly with correct category.
This strategy works for all layers in my architecture except for the layer from which transaction is started.

If i keep that field as static, then the logger is not updated after being set for once initially on class loading.

Instead of workaround I would rather vote to reopen this issue to have a proper fix provided in the coming releases.

> seam:component intercept uses Seam standard rules by default
> ------------------------------------------------------------
>
>                 Key: JBSEAM-1583
>                 URL: https://jira.jboss.org/jira/browse/JBSEAM-1583
>             Project: Seam
>          Issue Type: Bug
>          Components: Spring
>    Affects Versions: 2.0.0.BETA1
>            Reporter: Magnus Heino
>            Assignee: Michael Youngstrom
>             Fix For: 2.0.0.CR1
>
>
> From spring-seam-2.0.xsd, intercept:
> Determines whether Seam interceptors should be wrapped around a bean, by overriding Seam's default rules. 
> Seldom do you want the seam interceptors wrapped around a sprig singleton.  Auto will use choose no
> interception for a singleton and use Seam standard rules otherwise.
> Looking at the code, I can't find anything about this "no interception for a singleton" default. 
> This bean
> <bean id="processRepository" class="se.lantmateriet.wfl.dataaccess.WsProcessRepository">
>     	<constructor-arg value="http://localhost/avtal/avtalservice.asmx"/>
>     	<seam:component/>
>     </bean>
> fails like this:
> 12:45:35,203 DEBUG [ProxyUtils] Creating proxy for Spring Seam component 'processRepository' using class: se.lantmateriet.wfl.dataaccess.WsProcessRepository
> 12:45:35,282 INFO  [DefaultListableBeanFactory] Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory at 8c2d94: defining beans [org.jboss.seam.ioc.spring.seamComponentPostProcessor,processRepository]; root of factory hierarchy
> 12:45:35,297 ERROR [[/wfl-seam]] Exception sending context initialized event to listener instance of class org.jboss.seam.servlet.SeamListener
> org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'processRepository' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is org.jboss.seam.InstantiationException: Could not instantiate Seam component: processRepository
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:430)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:255)
> 	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:156)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:252)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
> 	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:287)
> 	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:689)
> 	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:358)
> 	at org.jboss.seam.ioc.spring.ContextLoader.startupContextLoader(ContextLoader.java:64)
> 	at org.jboss.seam.ioc.spring.ContextLoader.create(ContextLoader.java:43)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
> 	at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:124)
> 	at org.jboss.seam.Component.callComponentMethod(Component.java:1957)
> 	at org.jboss.seam.Component.callCreateMethod(Component.java:1880)
> 	at org.jboss.seam.Component.newInstance(Component.java:1859)
> 	at org.jboss.seam.contexts.Contexts.startup(Contexts.java:304)
> 	at org.jboss.seam.contexts.Contexts.startup(Contexts.java:278)
> 	at org.jboss.seam.contexts.ServletLifecycle.endInitialization(ServletLifecycle.java:98)
> 	at org.jboss.seam.init.Initialization.init(Initialization.java:508)
> 	at org.jboss.seam.servlet.SeamListener.contextInitialized(SeamListener.java:34)
> 	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3854)
> 	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4359)
> 	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:761)
> 	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:741)
> 	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:553)
> Caused by: org.jboss.seam.InstantiationException: Could not instantiate Seam component: processRepository
> 	at org.jboss.seam.Component.newInstance(Component.java:1853)
> 	at org.jboss.seam.Component.getInstance(Component.java:1756)
> 	at org.jboss.seam.Component.getInstance(Component.java:1735)
> 	at org.jboss.seam.Component.getInstance(Component.java:1729)
> 	at org.jboss.seam.ioc.spring.SeamComponentPostProcessor.postProcessAfterInitialization(SeamComponentPostProcessor.java:49)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:314)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1184)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:407)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:255)
> 	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:156)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:252)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
> 	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:287)
> 	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:689)
> 	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:358)
> 	at org.jboss.seam.ioc.spring.ContextLoader.startupContextLoader(ContextLoader.java:64)
> 	at org.jboss.seam.ioc.spring.ContextLoader.create(ContextLoader.java:43)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
> 	at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:124)
> 	at org.jboss.seam.Component.callComponentMethod(Component.java:1957)
> 	at org.jboss.seam.Component.callCreateMethod(Component.java:1880)
> 	at org.jboss.seam.Component.newInstance(Component.java:1859)
> 	at org.jboss.seam.contexts.Contexts.startup(Contexts.java:304)
> 	at org.jboss.seam.contexts.Contexts.startup(Contexts.java:278)
> 	at org.jboss.seam.contexts.ServletLifecycle.endInitialization(ServletLifecycle.java:98)
> 	at org.jboss.seam.init.Initialization.init(Initialization.java:508)
> Caused by: java.lang.InstantiationException: se.lantmateriet.wfl.dataaccess.WsProcessRepository_$$_javassist_0
> 	at java.lang.Class.newInstance0(Class.java:340)
> 	at java.lang.Class.newInstance(Class.java:308)
> 	at org.jboss.seam.ioc.ProxyUtils.enhance(ProxyUtils.java:71)
> 	at org.jboss.seam.ioc.IoCComponent.instantiateJavaBean(IoCComponent.java:94)
> 	at org.jboss.seam.Component.instantiate(Component.java:1154)
> 	at org.jboss.seam.Component.newInstance(Component.java:1849)
> 	at org.jboss.seam.Component.getInstance(Component.java:1756)
> 	at org.jboss.seam.Component.getInstance(Component.java:1735)
> 	at org.jboss.seam.Component.getInstance(Component.java:1729)
> 	at org.jboss.seam.ioc.spring.SeamComponentPostProcessor.postProcessAfterInitialization(SeamComponentPostProcessor.java:49)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:314)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1184)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:407)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:255)
> 	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:156)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:252)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
> 	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:287)
> 	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:689)
> 	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:358)
> 	at org.jboss.seam.ioc.spring.ContextLoader.startupContextLoader(ContextLoader.java:64)
> 	at org.jboss.seam.ioc.spring.ContextLoader.create(ContextLoader.java:43)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
> 	at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:124)
> 	at org.jboss.seam.Component.callComponentMethod(Component.java:1957)
> 	at org.jboss.seam.Component.callCreateMethod(Component.java:1880)
> If I change <seam:component/> to <seam:component intercept="false"/> everything works.
> 1. Default for stateless spring beans seems to be true since seam standard rules are applied if intercept is null, that is not defined. bug?
> 2. Why would I want to use intercept="true" anyway? What interceptors will be added?
> 3. Why is it failing with intercept="true"?

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