[gradebook2-dev] need to restart sakai whenever I make a code change to gradebook2

[Kim Huang]

hi, folks,
Please help,

It is painful to restart sakai whenever I make a code change to 
gradebook2, otherwise it throws:

org.springframework.beans.factory.BeanCreationException: Error creating 
bean with name 
'org.sakaiproject.gradebook.gwt.sakai.Gradebook2ComponentService' 
defined in ServletContext resource [/WEB-INF/gbServices.xml]: Invocation 
of init method failed; nested exception is 
org.springframework.beans.factory.CannotLoadBeanClassException: Cannot 
find class [org.sakaiproject.sample.tool.ItemServiceImpl] for bean with 
name 'org.sakaiproject.sample.tool.ItemService' defined in 
ServletContext resource [/WEB-INF/components.xml]; nested exception is 
java.lang.ClassNotFoundException: 
org.sakaiproject.sample.tool.ItemServiceImpl
    at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1338)
    at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)
    at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
    at java.security.AccessController.doPrivileged(Native Method)
    at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
    at 
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
    at 
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at 
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
    at 
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
    at 
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
    at 
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
    at 
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)
    at 
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)
    at 
org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
    at 
org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
    at 
org.sakaiproject.component.impl.ContextLoader.initWebApplicationContext(ContextLoader.java:64)
    at 
org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
    at 
org.sakaiproject.util.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:56)
    at 
org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3764)
    at 
org.apache.catalina.core.StandardContext.start(StandardContext.java:4216)
    at 
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
    at 
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)
    at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:831)
    at 
org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:720)
    at 
org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:490)
    at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1218)
    at 
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:293)
    at 
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
    at 
org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1306)
    at 
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1570)
    at 
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1579)
    at 
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1559)
    at java.lang.Thread.run(Thread.java:637)
Caused by: 
org.springframework.beans.factory.CannotLoadBeanClassException: Cannot 
find class [org.sakaiproject.sample.tool.ItemServiceImpl] for bean with 
name 'org.sakaiproject.sample.tool.ItemService' defined in 
ServletContext resource [/WEB-INF/components.xml]; nested exception is 
java.lang.ClassNotFoundException: 
org.sakaiproject.sample.tool.ItemServiceImpl
    at 
org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1141)
    at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:524)
    at 
org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1177)
    at 
org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:222)
    at 
org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:202)
    at 
org.springframework.context.support.AbstractApplicationContext.getBeanNamesForType(AbstractApplicationContext.java:933)
    at 
org.sakaiproject.gradebook.gwt.sakai.Gradebook2ComponentServiceImpl.init(Gradebook2ComponentServiceImpl.java:1698)
    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.springframework.beans.factory.support.AbstractAutowir