[JIRA] Commented: (CAY-942) Generic types

From: Scott Anderson (JIRA) ("Scott)
Date: Fri Dec 14 2007 - 18:33:43 EST

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        [ 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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