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Spring 3.1 Hibernate 4 exception for Inheritance [ne peut pas être converti en org.hibernate.mapping.RootClass]

Salut, je viens de commencer à utiliser Spring, avec Hibernate4 et maven. Fondamentalement, ma hiérarchie de classe est HUmanMicroTask s'étend de MicroTask. À l'avenir, il peut y avoir plusieurs autres classes s'étendant de MicroTask. J'essayais d'avoir une table par classe concrète, ce qui est le moyen le plus simple de démarrer avec Spring3 et d'hiberner 4. Cependant, lorsque j'exécute mon code. Je reçois toujours l'exception suivante

13:11:52,260 ERROR TestContextManager:324 - Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@6ef137d] to prepare test instance [HumanMicroTaskBaseHibernateTest@52c05d3b]
Java.lang.IllegalStateException: Failed to load ApplicationContext
    at org.springframework.test.context.TestContext.getApplicationContext(TestContext.Java:157)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.Java:109)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.Java:75)
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.Java:321)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.Java:211)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.Java:288)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.Java:15)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.Java:290)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.Java:231)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.Java:47)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.Java:231)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.Java:60)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.Java:229)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.Java:50)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.Java:222)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.Java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.Java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.Java:300)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.Java:174)
    at org.Eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.Java:50)
    at org.Eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.Java:38)
    at org.Eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.Java:467)
    at org.Eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.Java:683)
    at org.Eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.Java:390)
    at org.Eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.Java:197)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [database-config.xml]: Invocation of init method failed; nested exception is Java.lang.ClassCastException: org.hibernate.mapping.UnionSubclass cannot be cast to org.hibernate.mapping.RootClass
    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$1.getObject(AbstractBeanFactory.Java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.Java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.Java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.Java:193)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.Java:567)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.Java:913)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.Java:464)
    at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.Java:103)
    at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.Java:1)
    at org.springframework.test.context.support.DelegatingSmartContextLoader.loadContext(DelegatingSmartContextLoader.Java:228)
    at org.springframework.test.context.TestContext.loadApplicationContext(TestContext.Java:124)
    at org.springframework.test.context.TestContext.getApplicationContext(TestContext.Java:148)
    ... 24 more
Caused by: Java.lang.ClassCastException: org.hibernate.mapping.UnionSubclass cannot be cast to org.hibernate.mapping.RootClass
    at org.hibernate.cfg.annotations.PropertyBinder.bind(PropertyBinder.Java:212)
    at org.hibernate.cfg.annotations.PropertyBinder.makePropertyValueAndBind(PropertyBinder.Java:203)
    at org.hibernate.cfg.AnnotationBinder.processElementAnnotations(AnnotationBinder.Java:2013)
    at org.hibernate.cfg.AnnotationBinder.processIdPropertiesIfNotAlready(AnnotationBinder.Java:768)
    at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.Java:687)
    at org.hibernate.cfg.Configuration$MetadataSourceQueue.processAnnotatedClassesQueue(Configuration.Java:3431)
    at org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.Java:3385)
    at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.Java:1337)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.Java:1727)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.Java:1778)
    at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.Java:184)
    at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.Java:314)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.Java:1514)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.Java:1452)
    ... 38 more

Bien que j'aie vu pas mal de forums, je ne suis pas convaincu de décider où je fais l'erreur. Ma classe MicroTask se présente comme suit:

@Entity
@Table(name = "MICROTASK")
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
public class MicroTask {
    @Id
    @GeneratedValue(generator = "system-uuid")
    @GenericGenerator(name = "system-uuid", strategy = "uuid")
    @Column(name = "MICROTASKID")
    private String microTaskId;
    @Column(name = "CREATIONDATE")
    private Date creationDate;
    @Column(name = "DESCRIPTION")
    private String description;

    public Date getCreationDate() {
        return creationDate;
    }
//More Getters and setters

Ma classe HumanMicroTask se présente comme suit:

    @Entity
    @Table(name = "HUMANMICROTASK")
    @AttributeOverrides({
        @AttributeOverride(name="microTaskId", column=@Column(name="MICROTASKID")),
        @AttributeOverride(name="creationDate", column=@Column(name="CREATIONDATE")),
        @AttributeOverride(name="description", column=@Column(name="DESCRIPTION"))
    })
    public class HumanMicroTask extends MicroTask {


        @Column(name = "TITLE")
        private String title;
        @Column(name = "CHANNEL")
        private String channel;
        @Id
        @Column(name = "HMTID")
        private String humanMicroTaskid;

        public String getId() {
            return humanMicroTaskid;
        }
//More Getters and setters

Et mon config.xml ressemble à ceci:

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
        ">

    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
        destroy-method="close">
        <property name="driverClass">
            <value>${jdbc.driver.className}</value>
        </property>
        <property name="jdbcUrl">
            <value>${jdbc.url}</value>
        </property>
        <property name="user">
            <value>${jdbc.username}</value>
        </property>
        <property name="password">
            <value>${jdbc.password}</value>
        </property>

    </bean>

    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="dataSource">
            <ref bean="dataSource"/>
        </property>
        <property name="packagesToScan" value="com.hp.hpl.crowdcloud" />
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">${jdbc.hibernate.dialect}</prop>
                <prop key="hibernate.hbm2ddl.auto">create</prop>
                <!-- uncomment this for first time run -->
                <prop key="hibernate.hbm2ddl.auto">create</prop>
                <prop key="hibernate.show_sql">true</prop>
            </props>
        </property>
    </bean>
    <bean id="transactionManager"
        class="org.springframework.orm.hibernate4.HibernateTransactionManager">
        <property name="sessionFactory">
            <ref bean="sessionFactory" />
        </property>
    </bean>
    <tx:annotation-driven />

</beans>

Ma configuration Maven

    <maven.test.failure.ignore>true</maven.test.failure.ignore>
    <org.springframework.version>3.1.0.RELEASE</org.springframework.version>
    <hibernate.version>4.1.1.Final</hibernate.version>
    <sl4j.version>1.5.6</sl4j.version>

Veuillez m'aider. Je ne sais pas où je fais l'erreur.

javaspringhibernatespring-orm
43
Raveesh Sharma

Cela est dû à la colonne Id dans les deux classes. Supprimez l'ID de HumanMicroTask.

79
dhamibirendra

résoudre ce problème Supprimer @Id de la sous-classe

dans MicroTask garder

   @Id
    @GeneratedValue(generator = "system-uuid")
    @GenericGenerator(name = "system-uuid", strategy = "uuid")
    @Column(name = "MICROTASKID")
    private String microTaskId;

dans la sous-classe HumanMicroTask supprimer

   @Id
    @Column(name = "HMTID")
    private String humanMicroTaskid;
11
nizar ouerghi

J'ai eu le même problème il y a quelque temps, car votre classe parent a une clé primaire: 'Id', lorsque les sous-classes sont générées, elles génèrent automatiquement une clé étrangère avec le nom exact de la clé primaire de leur parent

Exemple: (pseudocode)

Définition d'entité

Classe parent

  @Entity
    @Inheritance(strategy = InheritanceType.JOINED)
    @Table(name = "abstract_person", catalog = "catalog", schema = "")
    class AbstractPerson{

        //Primary Key
        @Id
        @Column(name = "idPerson")
        int idPerson;

        @Basic
        @Column(name = "name")
        String name;

        //corresponding getters and setters
    }

Classe enfant:

 @Entity
    @Table(name = "concrete_person", catalog = "catalog", schema = "")
    class ConcretePerson extends AbstractPerson{

       //No id or primary key is defined here

        @Basic
        @Column(name="profession")
        String profession;

    }

Génération de table

La classe parent mappera à ceci

Tableau "personne_abstraite"
id: Int (clé primaire)
nom: Varchar

La classe enfant correspondra à ceci:


Tableau "concret_personne"
profession: Varchar
idPerson: int (Généré automatiquement, clé étrangère vers la table parent et la classe primaire de cette table)

//Hypothèses
Base de données Mysql;
Jpa 2 Hibernate Implementation;
NetBeans 7x Ide

8
José Roberto Ramírez Aguilar