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From "Jerry Carter (JIRA)" <>
Subject [jira] Updated: (OPENJPA-1569) @Strategy triggers an InvalidStateException for fields which are declared as Java interfaces
Date Mon, 15 Mar 2010 01:35:27 GMT


Jerry Carter updated OPENJPA-1569:

    Priority: Minor  (was: Major)

(Set priority to minor as there are a number of workarounds.)

While some argument might be made for supporting arbitrary types as recipients for @Strategy
decoration, the spirit of JPA limits one to "user-defined types that implement the Serializable
interface" (JPA 2.0, section 2.2).  This is probably why the distinction is made in JavaTypes,
but the implementation might be wrong. 

Rather than 'type == Serializable.class', mightn't this be 'Serializable.class.isAssignableFrom(type)'?

> @Strategy triggers an InvalidStateException for fields which are declared as Java interfaces
> --------------------------------------------------------------------------------------------
>                 Key: OPENJPA-1569
>                 URL:
>             Project: OpenJPA
>          Issue Type: Bug
>    Affects Versions: 2.0.0-beta2
>         Environment: MacOS X, Spring 3.0, Maven
>            Reporter: Jerry Carter
>            Priority: Minor
> The @Strategy annotation works fine for classes but does not work if the field is a Java
interface.  Consider:
> 	@Persistent
> 	@Strategy("SimpleHandler")
> 	@Column(name="address_packed")
> 	private BaseAddress address;
> 	public BaseAddress getAddress() { return address; }
> 	public void setAddress(BaseAddress address) { this.address = address; }
> This works perfectly if BaseAddress is defined as a class but results in an InvalidStateException
if it is an interface:
> <openjpa-2.0.0-beta2-rexported fatal user error> org.apache.openjpa.persistence.InvalidStateException:
Encountered unmanaged object in persistent field "com.example.SimpleEntity.address" during
flush.  However, this field does not allow cascade persist. Set the cascade attribute for
this field to CascadeType.PERSIST or CascadeType.ALL (JPA annotations) or "persist" or "all"
(JPA orm.xml), or enable cascade-persist globally, or manually persist the related field value
prior to flushing. You cannot flush unmanaged objects or graphs that have persistent associations
to unmanaged objects.
> FailedObject: com.example.USAddress@4e0a39de
> 	at org.apache.openjpa.kernel.SingleFieldManager.preFlushPC(
> 	at org.apache.openjpa.kernel.SingleFieldManager.preFlush(
> 	at org.apache.openjpa.kernel.SingleFieldManager.preFlush(
> 	at org.apache.openjpa.kernel.SingleFieldManager.preFlush(
> 	at org.apache.openjpa.kernel.StateManagerImpl.preFlush(
> 	at org.apache.openjpa.kernel.PNewState.beforeFlush(
> 	at org.apache.openjpa.kernel.StateManagerImpl.beforeFlush(
> 	at org.apache.openjpa.kernel.BrokerImpl.flush(
> 	at org.apache.openjpa.kernel.BrokerImpl.flushSafe(
> 	at org.apache.openjpa.kernel.BrokerImpl.flush(
> 	at org.apache.openjpa.kernel.DelegatingBroker.flush(
> 	at org.apache.openjpa.persistence.EntityManagerImpl.flush(
> 	... etc ...
> Here com.example.USAddress is a class which implements the BaseAddress interface.

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