I am seeing an 'unmanaged object' exception for the objects build using
@Strategy, but isn't that exactly the point? These are supposed to be
unmanaged with the strategy being invoked as necessary for conversion. I must
be missing something obvious. ;-)
> Caused by: <openjpa-2.0.0-beta2-r422266:915978 fatal user error>
> org.apache.openjpa.persistence.InvalidStateException: Encountered unmanaged
> object in persistent field "com.example.SimpleEntity.custom" 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.mypo...@a431693
> at
> org.apache.openjpa.kernel.SingleFieldManager.preFlushPC(SingleFieldManager.java:767)
My entity looks something like this:
> @Entity
> public abstract class SimpleEntity {
> @Id
> private long id;
> public long getId() { return id; }
> public void setId(long id) { this.id = id; }
>
> @Strategy("MyPointHandler")
> private MyPoint custom;
> MyPoint getCustom() { return custom; }
> void setCustom(MyPoint custom) { this. custom = custom; }
>
> ...
> }
With a very simple handler class:
> public class MyPointHandler extends AbstractValueHandler {
> @Override
> public Column[] map(ValueMapping vm, String name, ColumnIO io, boolean
> adapt) {
> Column c = new Column();
> c.setIdentifier(DBIdentifier.newColumn(name));
> c.setJavaType(JavaTypes.STRING);
> return new Column[]{ c };
> }
>
> public boolean isVersionable() {
> return true;
> }
>
> public Object toDataStoreValue(ValueMapping vm, Object val, JDBCStore
> store) {
> return new MyPoint((String) val);
> }
>
> public Object toObjectValue(ValueMapping vm, Object val) {
> if (val == null) return null;
> return ((MyPoint) val).getValue();
> }
> }
I've used the PointHandler from the OpenJPA tests as a model.
