我正在使用JDO与datanucleus-mongodb 3.2.3和spring 3.0.7在karaf 2.2.10之上。
在新的OSGi软件包安装上,我能够毫无问题地在mongodb上保留,但在重新安装软件包后,我在构建新的JDO PersistenceManagerFactory时出现以下错误:
ERROR: Bundle [my_bundle] [242] Unable to get module class path.
(java.lang.IllegalStateException: zip file closed)
ID(242)引用捆绑的第一个分配ID(换句话说,旧捆绑的ID)。
上一个bundle的上下文似乎已正确关闭,以及“旧”JDO PersistenceManagerFactory。
我的本地持久性管理器工厂bean类(基于example provided in the dn site):
public class OSGiLocalPersistenceManagerFactoryBean
extends LocalPersistenceManagerFactoryBean implements BundleContextAware {
public static final String JDO_BUNDLE_NAME = "org.datanucleus.api.jdo";
public static final String JDO_PMF_CLASS_NAME = "org.datanucleus.api.jdo.JDOPersistenceManagerFactory";
private BundleContext bundleContext;
@Override
protected PersistenceManagerFactory newPersistenceManagerFactory(String name) {
return JDOHelper.getPersistenceManagerFactory(name, getClassLoader());
}
@Override
protected PersistenceManagerFactory newPersistenceManagerFactory(Map props) {
ClassLoader classLoader = getClassLoader();
props.put("datanucleus.primaryClassLoader", classLoader);
if (FrameworkUtil.getBundle(this.getClass()) != null) { // running in OSGi
props.put("datanucleus.plugin.pluginRegistryClassName", "org.datanucleus.plugin.OSGiPluginRegistry");
}
PersistenceManagerFactory pmf = JDOHelper.getPersistenceManagerFactory(props, classLoader);
return pmf;
}
private ClassLoader getClassLoader() {
ClassLoader classLoader = null;
Bundle thisBundle = FrameworkUtil.getBundle(this.getClass());
if (thisBundle != null) { // on OSGi runtime
Bundle[] bundles = bundleContext.getBundles();
for (Bundle bundle : bundles) {
if (JDO_BUNDLE_NAME.equals(bundle.getSymbolicName())) {
try {
classLoader = bundle.loadClass(JDO_PMF_CLASS_NAME).getClassLoader();
} catch (ClassNotFoundException e) {
// do something fancy here ...
}
break;
}
}
} else { // somewhere else
classLoader = this.getClass().getClassLoader();
}
return classLoader;
}
@Override
public void setBundleContext(BundleContext bundleContext) {
this.bundleContext = bundleContext;
}
}
一些持久性与上下文摘录相关:
<!-- persistence manager factory -->
<bean id="pmf" class="[my_package].OSGiLocalPersistenceManagerFactoryBean">
<property name="configLocation" value="classpath:datanucleus.properties" />
</bean>
<!-- persistence manager factory proxy -->
<bean id="persistenceManagerFactoryProxy"
class="org.springframework.orm.jdo.TransactionAwarePersistenceManagerFactoryProxy">
<property name="targetPersistenceManagerFactory" ref="pmf" />
</bean>
<!-- transactions -->
<bean id="transactionManager" class="org.springframework.orm.jdo.JdoTransactionManager">
<property name="persistenceManagerFactory" ref="persistenceManagerFactoryProxy" />
</bean>
<tx:annotation-driven />
错误消息似乎指向了类加载问题,但是,为什么它只在重新部署期间失败?
任何提示都将不胜感激!
答案 0 :(得分:2)
确保您还刷新了依赖捆绑包,因为这些捆绑包通常会粘贴到旧的已卸载捆绑包中。它仍然存在,直到所有引用被清除。 在Karaf shell中,您只需要在没有ID的情况下发出刷新或简单刷新,这将导致整个容器重新布线:)
答案 1 :(得分:0)
对于那些无法简单刷新javax.jdo
的用户,请确保在重新创建ClassLoader
时重新创建自定义PersistenceManagerFactory
。如果Datanucleus
未更改,ClassLoader
将不会尝试两次加载同一个类。您最终会ClassCastExceptions
说Entity.class
无法投放到Entity.class
。