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Creating foreign key one-to-many relationship gets ERROR

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Viewing 2 posts - 1 through 2 (of 2 total)
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  • January 19, 2008 at 11:08 pm #280844 Reply

    jtolson
    Member

    All,

    Listed below is my system configuration:

    ** System properties:
    OS=MacOSX
    OS version=10.5.1
    Java version=1.5.0_13

    *** MyEclipse details:
    MyEclipse Enterprise Workbench
    Version: 6.0.1 GA
    Build id: 6.0.1-GA-200710

    I have been fighting this problem for about two weeks. When I have two table that do not have a relationship the system works great. However, as soon as I place a constraint on the tables. One-to-Many relationship, I get the error below on all my POJO’s. I only have two tables, PARENT one-to-many CHILD. I tried to create a simple example. I generated all files from myEclipse and added spring 2.0 and hibernate 3.1 to a web project. I think I have read every post in this form about this and have not found an answer. Also surf the web and could not find and answer. I read something about having a private constructor would cause this problem but I don’t have a private constructor plus it is generated code from the reverse eng. for hibernate. Can someone give me some guidance.

    Thanks ahead of time…..

    2008-01-19 23:33:12,027 WARN org.hibernate.tuple.PojoEntityTuplizer – could not create proxy factory for:com.peniel.hibernate.Parent
    org.hibernate.HibernateException: CGLIB Enhancement failed: com.peniel.hibernate.Parent
    at org.hibernate.proxy.CGLIBLazyInitializer.getProxyFactory(CGLIBLazyInitializer.java:132)
    at org.hibernate.proxy.CGLIBProxyFactory.postInstantiate(CGLIBProxyFactory.java:41)
    at org.hibernate.tuple.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:161)
    at org.hibernate.tuple.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:131)
    at org.hibernate.tuple.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:55)
    at org.hibernate.tuple.TuplizerLookup.create(TuplizerLookup.java:64)
    at org.hibernate.tuple.EntityMetamodel.<init>(EntityMetamodel.java:257)
    at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:412)
    at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:108)
    at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
    at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:216)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1176)
    at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:805)
    at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:745)
    at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:134)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1198)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1167)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:427)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:249)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:155)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:246)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:267)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:110)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1095)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:857)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:423)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:249)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:155)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:246)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160)
    at com.peniel.manager.HibernateFormManager.<clinit>(HibernateFormManager.java:25)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:85)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:61)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:752)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:717)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:386)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:249)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:155)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:246)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:267)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:110)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1095)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:857)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:423)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:249)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:155)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:246)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:291)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:352)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:332)
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:266)
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:236)
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:126)
    at javax.servlet.GenericServlet.init(GenericServlet.java:212)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1161)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4042)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4348)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)
    at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
    at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
    at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
    at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
    at org.apache.catalina.core.StandardService.start(StandardService.java:516)
    at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:566)
    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:585)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
    Caused by: java.lang.NoClassDefFoundError
    at org.hibernate.proxy.CGLIBLazyInitializer.getProxyFactory(CGLIBLazyInitializer.java:116)
    … 86 more

    January 20, 2008 at 12:13 am #280845 Reply

    jtolson
    Member

    OK,
    I have clearity. I think these are just warning but it seem hibernate should run cleaner. ANYWAY, I have continued on with this adventure and I am having trouble with a web project and session. I have read that can be a challenge but I thought I could scope a session to a method but that is not correct. I see a session is getting injected into the DAO’s but am confused on how to get at it. Listed below is my business object. I pulls up the applicationContext.xml and tries to use the session to get the childs set.

    Looking at http://www.hibernate.org/hib_docs/reference/en/html/performance.html they give two options.

    Is there an example of this on your site. I would like to live hibernate on the service layer and just pass pojo’s. 

    
package com.peniel.manager;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.TreeSet;
import java.util.Vector;
import java.util.List;

import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.collection.PersistentSet;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import com.peniel.hibernate.*;
import org.hibernate.Hibernate;

public class HibernateFormManager
{
    [b]static private BeanFactory beanFactory;
    static {
           beanFactory = new XmlBeanFactory(new ClassPathResource( 
       "applicationContext.xml"));
    }

    //static private ParentDAO parentDAO = (ParentDAO)beanFactory.getBean("ParentDAO");[/b]


    public Parent find(long doc_ID)
    {
        
        Parent parent = new Parent();
            [b]ParentDAO parentDAO = (ParentDAO)beanFactory.getBean("ParentDAO");
            Session session = parentDAO.getSessionFactory().openSession();
            Transaction tx = session.beginTransaction();[/b]
            
           parent = (Parent) session.get(ParentDAO.class, doc_ID);
           //parent = (Parent)parentDAO.findById(doc_ID);
           
           System.out.println(parent.getFirstName());
           System.out.println(parent.getLastName());
            
           HashSet childs = new HashSet();
           Hibernate.initialize(parent.getChilds());
           System.out.println(parent.getChilds().size());
//            Iterator i = childs.iterator();
//            System.out.println("=============== CHILD ====================");
//            while (i.hasNext()) {
//                Child child = (Child)i.next();
//                System.out.println(child.getId());
//            }
//            System.out.println("===================================");
//            
            
            
            List parentList = parentDAO.findAll();
            Iterator i = parentList.iterator();
            while (i.hasNext()) {
                Parent obj = (Parent)i.next();
                System.out.println("===================================");
                System.out.print(obj.getFirstName());
                System.out.println(obj.getLastName());
                System.out.println("===================================");
            }
            //tx.commit();

        return parent;
    }
}
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