Building a test application just to learn about GAE/J and things are
working fine (so far), but I am wondering if I am veering off in a
wrong direction. Here is a simplified statement of the situation...
1. I have an entity class for an entity A
public class A implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Key key;
2. In a JSP page, I display a list of As, with a link to show the full
details of an "A". This link is generated by the JSTL:
<a href="/show?aKey=<c:out value="${a.key.id}" />"><c:out value="$
{a.key.id}" /></a></td>
3. In the show servlet, I have:
Long requestKey = Long.parseLong(req.getParameter("aKey"));
Key aKey= KeyFactory.createKey("A", requestKey);
A a = em.find(A.class, aKey);
As mentioned, it all works fine. I have used this for both entities
with no parents (as above) and entities owned by a parent. It just
seems odd to me that I am using something like ${a.key.id} rather than
${a.key}, but ${a.key} gives me the key.toString() value rather than
the KeyFactory.keyToString(key) value. Also, since I am using JSTL, I
don't know how to use KeyFactory (without using a JSP scriptlet, which
I try (for no particular reason) to avoid.
Is the above ok/safe/fine - or am I abusing GAE and generating major
negative GAE karma which will come back to bite me in the future? :)
Thanks!
RB
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