I got three classes:
@Entity
@Table(name = "account")
public class Account implements Serializable {
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER, mappedBy =
"account")
private Set<Product> products = new HashSet<Product>();
...
}
@Entity
@Table(name = "product")
public class Product implements Serializable {
@ManyToOne
@JoinColumn(name = "acc_id", nullable = false)
private Account account;
@OneToOne(mappedBy = "product", cascade = {CascadeType.ALL}, fetch =
FetchType.LAZY)
private Config config;
..
}
@Entity
@Table(name = "config")
public class Config implements Serializable {
@OneToOne(cascade={CascadeType.ALL}) // another version without cascade
@JoinColumn(name = "prod_id", unique = true, nullable = true)
private Product product;
...
}
In my code I'm creating new Product with subelement Config, and try to
persist using Account object.
Account acc = dao.getAccount... //persistent object
Product prod = new Product(); //creates new product with config
acc.addProduct(prod);
dao.updateAccount(acc);
and here I got exception :
<1.0.0-r561970-r561970 nonfatal user error>
org.apache.openjpa.persistence.ArgumentException: Encountered new object
"[EMAIL PROTECTED]" in persistent field "myapp.Config.product" of
managed object "[EMAIL PROTECTED]" during attach. However, this field
does not allow cascade attach. You cannot attach a reference to a new
object without cascading.
FailedObject: [EMAIL PROTECTED]
at
org.apache.openjpa.kernel.AttachStrategy.getReference(AttachStrategy.java:276)
at
org.apache.openjpa.kernel.AttachStrategy.attachField(AttachStrategy.java:193)
at
org.apache.openjpa.kernel.VersionAttachStrategy.attach(VersionAttachStrategy.java:143)
at
org.apache.openjpa.kernel.AttachManager.attach(AttachManager.java:241)
at
org.apache.openjpa.kernel.AttachStrategy.attachField(AttachStrategy.java:201)
at
org.apache.openjpa.kernel.VersionAttachStrategy.attach(VersionAttachStrategy.java:143)
at
org.apache.openjpa.kernel.AttachManager.attach(AttachManager.java:241)
at
org.apache.openjpa.kernel.AttachStrategy.attachCollection(AttachStrategy.java:330)
at
org.apache.openjpa.kernel.DetachedStateManager.attach(DetachedStateManager.java:253)
at
org.apache.openjpa.kernel.AttachManager.attach(AttachManager.java:241)
at
org.apache.openjpa.kernel.AttachManager.attach(AttachManager.java:101)
at org.apache.openjpa.kernel.BrokerImpl.attach(BrokerImpl.java:3186)
at
org.apache.openjpa.kernel.DelegatingBroker.attach(DelegatingBroker.java:1147)
at
org.apache.openjpa.persistence.EntityManagerImpl.merge(EntityManagerImpl.java:665)
at
org.apache.geronimo.persistence.CMPEntityManagerTxScoped.merge(CMPEntityManagerTxScoped.java:97)
at myapp.Dao.updateAccount(Dao.java:81)
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
org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:146)
at
org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:129)
at
org.apache.openejb.core.interceptor.InterceptorStack.invoke(InterceptorStack.java:67)
at
org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:203)
at
org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.java:165)
at
org.apache.openejb.core.ivm.EjbObjectProxyHandler.businessMethod(EjbObjectProxyHandler.java:211)
at
org.apache.openejb.core.ivm.EjbObjectProxyHandler._invoke(EjbObjectProxyHandler.java:65)
at
org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:320)
at
org.apache.openejb.util.proxy.Jdk13InvocationHandler.invoke(Jdk13InvocationHandler.java:49)
at $Proxy94.update(Unknown Source)
at ...
I've found similar cases using google, but I haven't found solution. Could
anyone help?
tia
Beniamin
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