On Dec 21, 2007, at 2:30 PM, Tore Halset wrote:
The more I think about it, the more I feel like we'll have to do
some kind of Context/Query wrapper that supports generics
specifically for select queries, similar to what was suggested here:
https://issues.apache.org/cayenne/browse/CAY-877
A wrapper is fine, but do you think this is fixable in Query as well?
Regardless of what I said elsewhere on the topic (the ideas I am still
planning to pursue), current version of performQuery is soooo painful
to use. We MUST do something about it. Here is one idea - revert
generics version of "performQuery":
--- framework/cayenne-jdk1.5-unpublished/src/main/java/org/apache/
cayenne/ObjectContext.java (revision 606412)
+++ framework/cayenne-jdk1.5-unpublished/src/main/java/org/apache/
cayenne/ObjectContext.java (working copy)
@@ -156,7 +156,8 @@
/**
* Executes a selecting query, returning a list of persistent
objects or data rows.
*/
- List<?> performQuery(Query query);
+ @SuppressWarnings("unchecked")
+ List performQuery(Query query);
This would at least allow users to assign results without warnings:
List<Artist> x = context.performQuery(q);
So while there's no added type-safety, at least such API won't result
in a downgrade in functionality.
Comments?
Andrus
