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[英]Single table inheritance strategy (or table per class hierarchy) with Oracle and Hibernate
[英]Hibernate Inheritance.TABLE_PER_CLASS strategy
我在休眠時遇到了一個非常大的問題。
我的繼承策略在eclipselink下可以很好地在glassfish和jboss應用服務器下作為jpa提供程序使用,但是當我切換到休眠狀態時,一切就都進行了。
我在這里閱讀了幾篇文章,但都沒有解決我的問題。
以下是堆棧跟蹤。
Failed to start service
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1767) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_21]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_21]
at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_21]
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:210)
at org.hibernate.cfg.annotations.PropertyBinder.makePropertyValueAndBind(PropertyBinder.java:201)
at org.hibernate.cfg.AnnotationBinder.processElementAnnotations(AnnotationBinder.java:2011)
at org.hibernate.cfg.AnnotationBinder.processIdPropertiesIfNotAlready(AnnotationBinder.java:765)
at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:684)
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processAnnotatedClassesQueue(Configuration.java:3406)
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3360)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1334)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1724)
at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:84)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:904)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:889)
at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:73)
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:162)
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.start(PersistenceUnitServiceImpl.java:85)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
... 3 more
我確保沒有子類定義另一個@Id列(無論如何,netbeans始終會為我標記此錯誤)
這些是我擁有的一組繼承:
@Entity
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
@PartialSecurity
public abstract class DataVerification extends SecureEntity implements Serializable {
private static final long serialVersionUID = IdGenerator.serialVersionUID(DataVerification.class);
@Id
private Long verificationId = IdGenerator.generateId();
@Column(length = 50, nullable = false)
private String verificationCode;
private String verifiedId;
private boolean verified;
@Temporal(javax.persistence.TemporalType.TIMESTAMP)
private Calendar verificationDate;
private DataVerificationType dataVerificationType;
private VerificationMethod verificationMethod;
@OneToOne
private Account verifiedBy;
@OneToOne
private Account approvedBy;
/**
*
* @author marembo
*/
@Entity
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
public class OnlineDataVerification extends DataVerification implements Serializable {
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
@Ignore
private List<UploadFile> verificationFiles;
/**
*
* @author marembo
*/
@Entity
public class IncomeDataVerification extends OnlineDataVerification implements Serializable {
private static final long serialVersionUID = IdGenerator.serialVersionUID(IncomeDataVerification.class);
private IncomeSource incomeSource;
private String occupation;
/**
*
* @author marembo
*/
@Entity
public class AgentDataVerification extends OnlineDataVerification implements Serializable {
@Column(length = 2048, nullable = false)
private String comment;
private String verificationTransaction = IdGenerator.generateStringId();
謝謝
您的堆棧跟蹤引發了對休眠版本不一致問題的懷疑。 如果將應用程序部署到JBoss,則JBoss已經擁有自己的休眠模式。 如果您的戰爭還使用了不同版本的Hibernate,則加載在類路徑上的實際類可能不一致,從而導致各種問題。
通常,最佳實踐是,如果要部署到已經提供了休眠的容器,請不要將其捆綁在戰爭中(例如:將依賴項標記為maven pom所提供的)
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