Hi,
I have a problem with cascading merging of child entities using the EntityManager. my entity hierarchy ir pretty simple - Hostel is parent which has a one-to-one with Address which in turn has a many-to-one with City. both of these relationships are marked with cascade.ALL
in this scenario City is always a detached entity
when the persist method executes it cascades down to the City entity, sees that it is detached and throws an exception.
what am I doing wrong? why isn't the cascade working the way I think it should. how do I manage this scenario (although I tried a bunch of other ways, none of them worked)?
Hibernate version: 3.2.5.ga + EntityManager 3.3.1 GA + Annotations 3.3.0 GA
Mapping documents:
Code:
@Entity
@Table(name="TO_HOSTEL")
public class Hostel implements Comparable, Serializable {
@Id @GeneratedValue(strategy=GenerationType.AUTO)
@Column(name = "HOSTEL_ID")
private Long id;
@Column(name = "SERVICE")
private String service;
@Column(name = "CODE")
private Integer code;
@Column(name = "NAME")
private String name;
@Column(name = "DESCRIPTION")
private String description;
[b]@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name="ADDRESS")[/b]
private Address address;
@Column(name = "MIN_RATE")
private BigDecimal minRate;
...
@Entity
@Table(name="TO_ADDRESS")
public class Address implements Serializable {
@Id @GeneratedValue(strategy=GenerationType.AUTO)
@Column(name = "ADDRESS_ID")
private Long id;
@Column(name = "STREET_ADDRESS")
private String streetAddress;
[b]@ManyToOne(cascade=CascadeType.ALL)
@JoinColumn(name="CITY")
private City city;[/b]
@Column(name = "POSTAL_CODE")
private String postalCode;
@Column(name = "PROVINCE_CODE")
private String provinceCode;
@Column(name = "PROVINCE_NAME")
private String province;
...
@Entity
@Table(name="TO_CITY")
public class City implements Serializable {
@Id @GeneratedValue(strategy=GenerationType.AUTO)
@Column(name = "CITY_ID")
private Long id;
@Column(name = "CITY_NAME")
private String name;
@Column(name = "DEFAULT_NAME")
private String defaultName;
Code between sessionFactory.openSession() and session.close(): Code:
EntityManager em = HibernateUtil.getEntityManager();
EntityTransaction et = em.getTransaction();
boolean transactionWasActive = et.isActive();
if(!transactionWasActive)
et.begin();
try {
em.persist(hostel);
//em.merge(hostel.getAddress().getCity());
em.flush();
} finally {
if(!transactionWasActive)
et.commit();
}
Full stack trace of any exception that occurs:
javax.persistence.RollbackException: Transaction marked as rollbackOnly
at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:51)
at lt.travelonline.dao.HostelDAO.create(HostelDAO.java:40)
at lt.travelonline.hostel.hostelclub.HostelClubService.search(HostelClubService.java:924)
at lt.travelonline.hostel.HostelService.findHostels(HostelService.java:87)
at lt.travelonline.hostel.presentation.HostelSearch.searchHostels(HostelSearch.java:128)
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 com.sun.el.parser.AstValue.invoke(Unknown Source)
at com.sun.el.MethodExpressionImpl.invoke(Unknown Source)
at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:69)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)
at javax.faces.component.UICommand.broadcast(UICommand.java:312)
at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:184)
at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:162)
at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:350)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:75)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:613)
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