Could we also describe the @PersistenceUnits.
"
@PersistenceUnits
If you need to specify more than one @PersistenceUnit, specify all the
persistence units using a single @PersistenceUnits annotation.
"
Scott
On 09/13/2012 07:29 PM, Linda DeMichiel wrote:
> Well, if people are confused, it doesn't hurt. Perhaps the javadoc page
> would be a better place though.
>
> On 9/13/2012 10:22 AM, michael keith wrote:
>> Adding examples for @PersistenceContexts would kind of stick out,
>> wouldn't it? If we add for that one annotation then we
>> should probably add examples for all of them in the chapter. There are
>> currently no examples for any of them.
>>
>> Sections 10.3.1 and 10.3.2 don't do any more than just mention the
>> plural form in a sentence that states which classes
>> they can annotate, and then they include the pluralized annotation
>> definition. Sections 10.3.3 and 10.4.1 did include
>> the definition, but did not mention it in text. Seems like if we
>> wanted to make 10.3.3 and 10.4.1 be consistent with
>> 10.3.1 and 10.3.2 the only thing that would need to be added would be
>> a general statement of the form used in 10.3.1 and
>> 10.3.2:
>>
>> <Annotation> and <pluralizedAnnotation> can be applied to .....
>>
>> -Mike
>>
>> On 13/09/2012 1:03 PM, Linda DeMichiel wrote:
>>> Hi Scott,
>>>
>>> Thanks for the suggestion. I will add.
>>>
>>> -Linda
>>>
>>>
>>> On 9/13/2012 5:37 AM, Scott Marlow wrote:
>>>> Hi eg,
>>>>
>>>> I don't see a description of @PersistenceContexts. Could we add a
>>>> few words about @PersistenceContexts to section
>>>> 10.4.1?
>>>>
>>>> http://www.oracle.com/technetwork/middleware/ias/toplink-jpa-annotations-096251.html
>>>> includes the following:
>>>>
>>>> "
>>>> @PersistenceContexts
>>>>
>>>> If you need to specify more than one @PersistenceContext, you must
>>>> specify all your persistence contexts using a single
>>>> @PersistenceContexts annotation.
>>>> "
>>>>
>>>> The above link also has an example that would be nice to include:
>>>>
>>>> @Stateless
>>>> @PersistenceContexts({
>>>> @PersistenceContext(name="OrderEM"),
>>>> @PersistenceContext(name="ItemEM")
>>>> })
>>>> public class OrderEntryBean implements OrderEntry {
>>>> @Resource EJBContext ctx;
>>>> public Customer getCustomer(int custID) {
>>>> EntityManager em = (EntityManager)ctx.lookup("OrderEM");
>>>> return em.find(Customer.class, custID);
>>>> }
>>>> public void enterItem(int orderID, Item newItem) {
>>>> EntityManager em = (EntityManager)ctx.lookup("ItemEM");
>>>> ...
>>>> }
>>>> }
>>>>
>>>>
>>>>
>>>