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Posted to dev@cayenne.apache.org by "Scott Anderson (JIRA)" <de...@cayenne.apache.org> on 2007/12/15 00:33:43 UTC
[JIRA] Commented: (CAY-942) Generic types
[ https://issues.apache.org/cayenne/browse/CAY-942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12633 ]
Scott Anderson commented on CAY-942:
------------------------------------
This would also have the advantage of restricting the class passed to objectForPk to a Class<? extends CayenneDataObject>
public static <T extends CayenneDataObject> T objectForPk(Class<T> type, int pk);
> Generic types
> -------------
>
> Key: CAY-942
> URL: https://issues.apache.org/cayenne/browse/CAY-942
> Project: Cayenne
> Issue Type: Improvement
> Reporter: Scott Anderson
> Assignee: Andrus Adamchik
> Priority: Minor
>
> I realize that this would restrict functionality to Java 5+, but I still believe it would be a good option to have for the code generator in the modeler:
> Add, as an option, generic types to Lists in generated classes. It's quite annoying to have to cast types; much of my code looks like this:
> for(Object o : someObject.getSomeManyToManyField()) {
> TheTypeIWanted ttiw = (TheTypeIWanted) o;
> ...
> }
> With generics, it would be:
> for(TheTypeIWanted ttiw : someObject.getSomeManyToManyField()) {
> ...
> }
> It'd also be nice if the core libraries had generics. For example, "Object DataObjectUtils.objectForPk(Class, int)" could be changed to "T DataObjectUtils.objectForPk(Class<T>, int)" to avoid casting.
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