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POhibernate @ElementCollection and Embeded
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  1. POhibernate @ElementCollection and Embeded
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    copied!<p>i have three classes :</p> <pre><code>@Embeddable public class A { private List&lt;String&gt; refs; @ElementCollection public List&lt;String&gt; getRefs() { return refs; } public void setRefs(List&lt;String&gt; refs) { this.refs = refs; } } </code></pre> <p>and</p> <pre><code>@Embeddable public class B { private A reference; @Embedded public A getReference() { return reference; } public void setReference(A reference) { this.reference = reference; } } </code></pre> <p>and finally:</p> <pre><code>@Entity public class C { private Long id; private List&lt;B&gt; glossaryReferenceList; private B mainNarrator; @Embedded public B getMainNarrator() { return mainNarrator; } public void setMainNarrator(B mainNarrator) { this.mainNarrator = mainNarrator; } @ElementCollection public List&lt;B&gt; getGlossaryReferenceList() { return glossaryReferenceList; } public void setGlossaryReferenceList(List&lt;B&gt; glossaryReferenceList) { this.glossaryReferenceList = glossaryReferenceList; } @Id @GeneratedValue(strategy = GenerationType.IDENTITY) public Long getId() { return id; } public void setId(Long id) { this.id = id; } } </code></pre> <p>but hibernate cant handle it and on start up it throws <code>java.util.ConcurrentModificationException</code></p> <p>but either i remove</p> <ol> <li>glossaryReferenceList property from C or</li> <li>refs property form A</li> </ol> <p>it gets solved and no exception is thrown during hibernate start up.( I mean just one of above changes solves the exception)</p> <p>it looks that hibernate cant handle 3 level Embedded Objects</p> <p>by the way a few moments age i have boon getting <code>ArrayIndexOutOfBoundException:3</code> from the same source but i cant remember how did it change to <code>java.util.ConcurrentModificationException</code></p> <p>Can any body help? Am I right about Hibernate 3 level embedded object?? please help!</p> <p>here is the detailed Exception:</p> <pre><code>Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext-persistence.xml]: Invocation of init method failed; nested exception is java.util.ConcurrentModificationException at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:728) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:449) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:618) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:650) at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1582) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907) at java.lang.Thread.run(Thread.java:619) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext-persistence.xml]: Invocation of init method failed; nested exception is java.util.ConcurrentModificationException at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:400) at org.springframework.beans.factory.BeanFactoryUtils.beansOfTypeIncludingAncestors(BeanFactoryUtils.java:275) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.detectPersistenceExceptionTranslators(PersistenceExceptionTranslationInterceptor.java:139) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.&lt;init&gt;(PersistenceExceptionTranslationInterceptor.java:79) at org.springframework.dao.annotation.PersistenceExceptionTranslationAdvisor.&lt;init&gt;(PersistenceExceptionTranslationAdvisor.java:70) at org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor.setBeanFactory(PersistenceExceptionTranslationPostProcessor.java:103) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeAwareMethods(AbstractAutowireCapableBeanFactory.java:1475) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1443) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) ... 24 more Caused by: java.util.ConcurrentModificationException at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372) at java.util.AbstractList$Itr.remove(AbstractList.java:357) at org.hibernate.cfg.Configuration.originalSecondPassCompile(Configuration.java:1717) at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1423) at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1375) at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:717) at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:188) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452) ... 39 more </code></pre>
 

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