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POhow to create a composite primary key hibernate JPA?
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copied!<p>i try to create composite primary key in table from 2 foreign key using hibernate JPA,but gives me error.I find some <a href="http://java-aap.blogspot.com/2006/04/hibernate-annotations-composite.html#links" rel="nofollow">solution</a> on net but nothing </p> <p>The relations between tables looks like this:</p> <pre><code> Table Client clientID(PK) FirstName LastName . Table CarService serviceID(PK) DescriptionOfFailure . . Table ServiceDepartment clientID(PK) serviceID(PK) price . </code></pre> <p>implementation of my code looks like this:</p> <pre><code>@Entity public class ServiceDepartmentBean implements ServiceDepartmentI { @EmbeddedId private ServiceDepartmentPK serviceDepartmentPK = new ServiceDepartmentPK(); @Column(name="clientID", nullable=false, updatable=false, insertable=false) private Long client; @Column(name="serviceId", nullable=false, updatable=false, insertable=false) private Long service; @Column private double price; . . . . public void setClient(ClientI client){ serviceDepartmentPK.setClient(client); } public void setService(CarServiceI service){ serviceDepartmentPK.setService(service); } public ClientI getClient(){ return serviceDepartmentPK.getClient(); } public CarServiceI getService(){ return serviceDepartmentPK.getService(); } @Entity public class CarServiceBean implements CarServiceI { @Id @GeneratedValue private long serviceId; @Column(nullable = false) private String descriptionOfFailure; @OneToMany(mappedBy="service") private List<ServiceDepartmentI> servicesDepartments; public List<ServiceDepartmentI> getServicesDepartments() { return servicesDepartments; } . . //set i get method @Entity public class ClientBean implements ClientI { @Id @GeneratedValue private long clientID; @Column(nullable = false) private String firstName; @Column(nullable = false) private String lastName; @OneToMany(mappedBy = "client") private List<ServiceDepartmentI> servicesDepartments; public void setServicesDepartments(List<ServiceDepartmentI> servicesDepartments) { this.servicesDepartments = servicesDepartments; } public List<ServiceDepartmentI> getServicesDepartments() { return servicesDepartments; } } public class ServiceDepartmentPK implements Serializable { @ManyToOne private ClientI client; @ManyToOne private CarServiceI service; public void setClient(ClientI client) { this.client = client; } public ClientI getClient() { return client; } public void setService(CarServiceI service) { this.service = service; } public CarServiceI getService() { return service; } } </code></pre> <p>when try to build apllication throws me a error in console: stacktrace:</p> <pre><code>[INFO] annotations.EntityBinder Bind entity com.fit.beans.ServiceDepartmentBean on table ServiceDepartmentBean [ERROR] ioc.Registry Error invoking constructor public org.apache.tapestry5.internal.hibernate.HibernateSessionSourceImpl(org.slf4j.Logger,java.util.List): java.lang.NullPointerException [ERROR] ioc.Registry Operations trace: [ERROR] ioc.Registry [ 1] Realizing service HibernateSessionSource [ERROR] ioc.Registry [ 2] Instantiating service HibernateSessionSource implementation via org.apache.tapestry5.internal.hibernate.HibernateSessionSourceImpl(Logger, List) (at HibernateSessionSourceImpl.java:36) via org.apache.tapestry5.hibernate.HibernateCoreModule.bind(ServiceBinder) (at HibernateCoreModule.java:45) [ERROR] ioc.Registry [ 3] Invoking constructor org.apache.tapestry5.internal.hibernate.HibernateSessionSourceImpl(Logger, List) (at HibernateSessionSourceImpl.java:36) via org.apache.tapestry5.hibernate.HibernateCoreModule.bind(ServiceBinder) (at HibernateCoreModule.java:45) (for service 'HibernateSessionSource') [ERROR] HibernateCoreModule.HibernateSessionSource Construction of service HibernateSessionSource failed: Error invoking constructor public org.apache.tapestry5.internal.hibernate.HibernateSessionSourceImpl(org.slf4j.Logger,java.util.List): java.lang.NullPointerException org.apache.tapestry5.ioc.internal.OperationException: Error invoking constructor public org.apache.tapestry5.internal.hibernate.HibernateSessionSourceImpl(org.slf4j.Logger,java.util.List): java.lang.NullPointerException at org.apache.tapestry5.ioc.internal.OperationTrackerImpl.logAndRethrow(OperationTrackerImpl.java:121) at org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:88) at org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:87) at org.apache.tapestry5.ioc.internal.RegistryImpl.invoke(RegistryImpl.java:1121) at org.apache.tapestry5.ioc.internal.util.ConstructionPlan.createObject(ConstructionPlan.java:60) at org.apache.tapestry5.ioc.internal.ConstructorServiceCreator.createObject(ConstructorServiceCreator.java:61) at org.apache.tapestry5.ioc.internal.OperationTrackingObjectCreator$1.invoke(OperationTrackingObjectCreator.java:45) at org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:74) at org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:87) at org.apache.tapestry5.ioc.internal.RegistryImpl.invoke(RegistryImpl.java:1121) </code></pre> <p><strong>Any help would be appreciated =)</strong></p> <p>new error after refactoring stacktrace:</p> <pre><code>[INFO] cfg.AnnotationBinder Binding entity from annotated class: com.fit.beans.CarServiceBean [INFO] annotations.EntityBinder Bind entity com.fit.beans.CarServiceBean on table CarServiceBean [INFO] cfg.AnnotationBinder Binding entity from annotated class: com.fit.beans.ServiceDepartmentBean [INFO] annotations.EntityBinder Bind entity com.fit.beans.ServiceDepartmentBean on table ServiceDepartmentBean [ERROR] ioc.Registry Error invoking constructor public org.apache.tapestry5.internal.hibernate.HibernateSessionSourceImpl(org.slf4j.Logger,java.util.List): No identifier specified for entity: com.fit.beans.ServiceDepartmentBean [ERROR] ioc.Registry Operations trace: [ERROR] ioc.Registry [ 1] Realizing service HibernateSessionSource [ERROR] ioc.Registry [ 2] Instantiating service HibernateSessionSource implementation via org.apache.tapestry5.internal.hibernate.HibernateSessionSourceImpl(Logger, List) (at HibernateSessionSourceImpl.java:36) via org.apache.tapestry5.hibernate.HibernateCoreModule.bind(ServiceBinder) (at HibernateCoreModule.java:45) [ERROR] ioc.Registry [ 3] Invoking constructor org.apache.tapestry5.internal.hibernate.HibernateSessionSourceImpl(Logger, List) (at HibernateSessionSourceImpl.java:36) via org.apache.tapestry5.hibernate.HibernateCoreModule.bind(ServiceBinder) (at HibernateCoreModule.java:45) (for service 'HibernateSessionSource') [ERROR] HibernateCoreModule.HibernateSessionSource Construction of service HibernateSessionSource failed: Error invoking constructor public org.apache.tapestry5.internal.hibernate.HibernateSessionSourceImpl(org.slf4j.Logger,java.util.List): No identifier specified for entity: com.fit.beans.ServiceDepartmentBean org.apache.tapestry5.ioc.internal.OperationException: Error invoking constructor public org.apache.tapestry5.internal.hibernate.HibernateSessionSourceImpl(org.slf4j.Logger,java.util.List): No identifier specified for entity: com.fit.beans.ServiceDepartmentBean at org.apache.tapestry5.ioc.internal.OperationTrackerImpl.logAndRethrow(OperationTrackerImpl.java:121) at org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:88) at org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:87) at org.apache.tapestry5.ioc.internal.RegistryImpl.invoke(RegistryImpl.java:1121) at org.apache.tapestry5.ioc.internal.util.ConstructionPlan.createObject(ConstructionPlan.java:60) at org.apache.tapestry5.ioc.internal.ConstructorServiceCreator.createObject(ConstructorServiceCreator.java:61) at org.apache.tapestry5.ioc.internal.OperationTrackingObjectCreator$1.invoke(OperationTrackingObjectCreator.java:45) at org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:74) at org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:87) at org.apache.tapestry5.ioc.internal.RegistryImpl.invoke(RegistryImpl.java:1121) at org.apache.tapestry5.ioc.internal.OperationTrackingObjectCreator.createObject(OperationTrackingObjectCreator.java:49) at org.apache.tapestry5.ioc.internal.SingletonServiceLifecycle.createService(SingletonServiceLifecycle.java:29) at org.apache.tapestry5.ioc.internal.LifecycleWrappedServiceCreator.createObject(LifecycleWrappedServiceCreator.java:46) at org.apache.tapestry5.ioc.internal.AdvisorStackBuilder.createObject(AdvisorStackBuilder.java:63) at org.apache.tapestry5.ioc.internal.InterceptorStackBuilder.createObject(InterceptorStackBuilder.java:54) at org.apache.tapestry5.ioc.internal.RecursiveServiceCreationCheckWrapper.createObject(RecursiveServiceCreationCheckWrapper.java:60) at org.apache.tapestry5.ioc.internal.OperationTrackingObjectCreator$1.invoke(OperationTrackingObjectCreator.java:45) at org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:74) at org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:87) . . . . . Caused by: java.lang.RuntimeException: Error invoking constructor public org.apache.tapestry5.internal.hibernate.HibernateSessionSourceImpl(org.slf4j.Logger,java.util.List): No identifier specified for entity: com.fit.beans.ServiceDepartmentBean at org.apache.tapestry5.ioc.internal.util.ConstructorInvoker.invoke(ConstructorInvoker.java:57) at org.apache.tapestry5.ioc.internal.util.LoggingInvokableWrapper.invoke(LoggingInvokableWrapper.java:42) at org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:74) ... 72 more Caused by: org.hibernate.AnnotationException: No identifier specified for entity: com.fit.beans.ServiceDepartmentBean at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:672) at org.hibernate.cfg.AnnotationConfiguration.processArtifactsOfType(AnnotationConfiguration.java:546) at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:291) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1333) at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:867) at org.apache.tapestry5.internal.hibernate.HibernateSessionSourceImpl.<init>(HibernateSessionSourceImpl.java:46) 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:513) at org.apache.tapestry5.ioc.internal.util.ConstructorInvoker.invoke(ConstructorInvoker.java:48) ... 74 more </code></pre>

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