hi there !
Is possible to define @OneToMany realtionship
without using join table ? (i saw that in book about Ejb 3.0).
i use openjpa and when i'm trying to do simple
realtionship A-B, as follows :
@Entity
public class Address implements Serializable {
private Integer id;
private String street;
private String city;
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
public Integer getId() {
return id;
}
...
}
@Entity
public class Customer implements Serializable {
private Integer id;
private String name;
private String surname;
private Collection<Address> address = new ArrayList<Address>();
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
public Integer getId() {
return id;
}
@OneToMany(cascade = { CascadeType.PERSIST, CascadeType.REMOVE })
@JoinColumn(name = "Address_id")
public Collection<Address> getAddress() {
return address;
}
...
}
Client:
public class Testuj {
public static void main(String[] args) {
Properties prop = new Properties();
prop.put(
Context.INITIAL_CONTEXT_FACTORY,
"org.apache.openejb.client.RemoteInitialContextFactory");
prop.put("java.naming.provider.url", "ejbd://localhost:4201");
try {
Context context = new InitialContext(prop);
try {
CustomerManagerRemote cmr =
(CustomerManagerRemote) context
.lookup("CustomerManagerRemote");
Customer customer = new Customer();
customer.setName("Anna");
customer.setSurname("Maria");
ArrayList<Address> addresses =
(ArrayList<Address>)
customer.getAddress();
Address address = new Address();
address.setCity("New York");
address.setStreet("Nieprawdopodna 12/123");
addresses.add(address);
customer.setAddress(addresses);
cmr.addCustomer(customer);
} catch (Exception e) {
e.printStackTrace();
}
} catch (NamingException e) {
e.printStackTrace();
}
}
}
.. i gets:
javax.ejb.EJBException: The bean encountered a non-application exception.;
nested exception is:
<openjpa-1.0.2-r420667:627158 fatal user error>
org.apache.openjpa.persistence.ArgumentException: You have supplied columns
for "org.testowa.Customer.address", but this mapping cannot have columns in
this context.
at
org.apache.openejb.client.EJBInvocationHandler.convertException(EJBInvocationHandler.java:219)
at
org.apache.openejb.client.EJBObjectHandler._invoke(EJBObjectHandler.java:157)
at
org.apache.openejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:117)
at
org.apache.openejb.client.proxy.Jdk13InvocationHandler.invoke(Jdk13InvocationHandler.java:52)
at $Proxy0.addCustomer(Unknown Source)
at org.testowa.Testuj.main(Testuj.java:44)
Caused by: <openjpa-1.0.2-r420667:627158 fatal user error>
org.apache.openjpa.persistence.ArgumentException: You have supplied columns
for "org.testowa.Customer.address", but this mapping cannot have columns in
this context.
at
org.apache.openjpa.jdbc.meta.MappingInfo.assertNoSchemaComponents(MappingInfo.java:327)
at
org.apache.openjpa.jdbc.meta.strats.RelationToManyTableFieldStrategy.map(RelationToManyTableFieldStrategy.java:96)
at
org.apache.openjpa.jdbc.meta.strats.RelationCollectionTableFieldStrategy.map(RelationCollectionTableFieldStrategy.java:94)
at
org.apache.openjpa.jdbc.meta.FieldMapping.setStrategy(FieldMapping.java:120)
at
org.apache.openjpa.jdbc.meta.RuntimeStrategyInstaller.installStrategy(RuntimeStrategyInstaller.java:80)
at
org.apache.openjpa.jdbc.meta.FieldMapping.resolveMapping(FieldMapping.java:438)
at
org.apache.openjpa.jdbc.meta.FieldMapping.resolve(FieldMapping.java:403)
at
org.apache.openjpa.jdbc.meta.ClassMapping.resolveMapping(ClassMapping.java:812)
at
org.apache.openjpa.meta.ClassMetaData.resolve(ClassMetaData.java:1618)
at
org.apache.openjpa.meta.MetaDataRepository.processBuffer(MetaDataRepository.java:675)
at
org.apache.openjpa.meta.MetaDataRepository.resolveMapping(MetaDataRepository.java:636)
at
org.apache.openjpa.meta.MetaDataRepository.resolve(MetaDataRepository.java:514)
at
org.apache.openjpa.meta.MetaDataRepository.getMetaData(MetaDataRepository.java:302)
at
org.apache.openjpa.jdbc.meta.MappingRepository.getMapping(MappingRepository.java:282)
at
org.apache.openjpa.jdbc.meta.MappingTool.getMapping(MappingTool.java:673)
at
org.apache.openjpa.jdbc.meta.MappingTool.buildSchema(MappingTool.java:745)
at org.apache.openjpa.jdbc.meta.MappingTool.run(MappingTool.java:643)
at
org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerFactory.java:164)
at
org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.newBrokerImpl(JDBCBrokerFactory.java:130)
at
org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:188)
at
org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:142)
at
org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:192)
at
org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:56)
at
org.apache.geronimo.persistence.CMPEntityManagerTxScoped.createEntityManager(CMPEntityManagerTxScoped.java:74)
at
org.apache.geronimo.persistence.CMPEntityManagerTxScoped.getEntityManager(CMPEntityManagerTxScoped.java:55)
at
org.apache.geronimo.persistence.CMPEntityManagerTxScoped.persist(CMPEntityManagerTxScoped.java:81)
at
org.testowa.CustomerManagerBean.addCustomer(CustomerManagerBean.java:15)
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:597)
at
org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:158)
at
org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:141)
at
org.apache.openejb.core.interceptor.InterceptorStack.invoke(InterceptorStack.java:67)
at
org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:210)
at
org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:188)
at
org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.java:165)
at
org.apache.openejb.server.ejbd.EjbRequestHandler.doEjbObject_BUSINESS_METHOD(EjbRequestHandler.java:238)
at
org.apache.openejb.server.ejbd.EjbRequestHandler.processRequest(EjbRequestHandler.java:129)
at
org.apache.openejb.server.ejbd.EjbDaemon.processEjbRequest(EjbDaemon.java:164)
at org.apache.openejb.server.ejbd.EjbDaemon.service(EjbDaemon.java:122)
at org.apache.openejb.server.ejbd.EjbDaemon.service(EjbDaemon.java:84)
at org.apache.openejb.server.ejbd.EjbServer.service(EjbServer.java:60)
at org.apache.openejb.server.ServicePool$2.run(ServicePool.java:78)
at org.apache.openejb.server.ServicePool$3.run(ServicePool.java:101)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
what may be wronq ?
pietia
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