Envers not working with <dynamic-component> mapping?
Hi!
I am trying to use Envers in our software, but a NullPointerException is thrown on startup.
After a few time of debugging, it seems to be because of the <dynamic-component> mappings that we have for some entities.
Is there any proper way to deal with this?
The only quick and dirty way that I found is to replace some code in the EntitiesConfigurator class.
Hopefully I do not need to audit the classes mapped with some dynamic components.
Original code:
while (classes.hasNext()) {
PersistentClass pc = classes.next();
// Collecting information from annotations on the persistent class pc
AnnotationsMetadataReader annotationsMetadataReader =
new AnnotationsMetadataReader(globalCfg, reflectionManager, pc);
ClassAuditingData auditData = annotationsMetadataReader.getAuditData();
classesAuditingData.addClassAuditingData(pc, auditData);
}
Modified code:
while (classes.hasNext()) {
PersistentClass pc = classes.next();
// Collecting information from annotations on the persistent class pc
AnnotationsMetadataReader annotationsMetadataReader =
new AnnotationsMetadataReader(globalCfg, reflectionManager, pc);
if (annotationsMetadataReader == null) {
continue;
}
ClassAuditingData auditData = annotationsMetadataReader.getAuditData();
classesAuditingData.addClassAuditingData(pc, auditData);
}
Stack trace:
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'tcmTxManager' defined in class path resource [context.xml]: Cannot resolve reference to bean 'tcmSessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'tcmSessionFactory' defined in class path resource [context.xml]: Invocation of init method failed; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:329)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:107)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1391)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1132)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:626)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at org.acn.testproject.Main.main(Main.java:16)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'tcmSessionFactory' defined in class path resource [context.xml]: Invocation of init method failed; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1486)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:524)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:323)
... 15 more
Caused by: java.lang.NullPointerException
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.hibernate.annotations.common.util.ReflectHelper.classForName(ReflectHelper.java:143)
at org.hibernate.annotations.common.reflection.java.JavaReflectionManager.classForName(JavaReflectionManager.java:117)
at org.hibernate.envers.configuration.metadata.reader.AuditedPropertiesReader$ComponentPropertiesSource.<init>(AuditedPropertiesReader.java:549)
at org.hibernate.envers.configuration.metadata.reader.AuditedPropertiesReader$ComponentPropertiesSource.<init>(AuditedPropertiesReader.java:543)
at org.hibernate.envers.configuration.metadata.reader.AuditedPropertiesReader.addFromComponentProperty(AuditedPropertiesReader.java:340)
at org.hibernate.envers.configuration.metadata.reader.AuditedPropertiesReader.addFromProperties(AuditedPropertiesReader.java:296)
at org.hibernate.envers.configuration.metadata.reader.AuditedPropertiesReader.addPropertiesFromClass(AuditedPropertiesReader.java:277)
at org.hibernate.envers.configuration.metadata.reader.AuditedPropertiesReader.read(AuditedPropertiesReader.java:103)
at org.hibernate.envers.configuration.metadata.reader.AnnotationsMetadataReader.getAuditData(AnnotationsMetadataReader.java:114)
at org.hibernate.envers.configuration.EntitiesConfigurator.configure(EntitiesConfigurator.java:79)
at org.hibernate.envers.configuration.AuditConfiguration.<init>(AuditConfiguration.java:113)
at org.hibernate.envers.configuration.AuditConfiguration.getFor(AuditConfiguration.java:165)
at org.hibernate.envers.event.EnversIntegrator.integrate(EnversIntegrator.java:64)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:303)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1750)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1788)
at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.java:242)
at org.springframework.orm.hibernate4.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:372)
at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:357)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1545)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1483)
... 22 more
