The List<?> methods exist mainly to support easy iteration and getting
of the entries. They are unmodifiable lists, meaning that calling any
of the add/remove operations will result in an unsupported operation
exception.
- James
Harris Boyce III wrote:
> Right and I think this is where the rub lies. I've been "brought-up"
> that, unless the data is read-only, you just generally implement
> read/write properties so I can easily implement it as:
>
> List<Entry> Entries {
> get;
> }
>
> But even with that, nothing prevents the user accessing the feed from
> calling theFeed.Entries.Add(someEntry); Now, the implementation could
> return a read-only List and then any modifying operations would
> generate exceptions. But...why would I do that?
>
> Does that make any sense? I'm hoping that this doesn't seem like an
> immature conversation, but it's one that I struggle with when I study
> Java. Why wouldn't I just use those conveience methods to modify the
> list if and when I need to do so?
>
> Thanks again for the discussion! I'm learning lots!
>
> H
>
> On 9/28/06, Garrett Rooney <[EMAIL PROTECTED]> wrote:
>> On 9/28/06, Harris Boyce III <[EMAIL PROTECTED]> wrote:
>> > Garrett -
>> >
>> > Yeah, shoulda done that to begin with, sorry...OK, from package
>> > org.apache.abdera.model, interface Feed defines these methods:
>> >
>> > List<Entry> getEntries();
>> > void addEntry(Entry entry);
>> > ...
>> > Entry getEntry(String id);
>> >
>> > In .NET, I could define these as properties like this:
>> >
>> > List<Entry> Entries {
>> > get;
>> > set;
>> > }
>> >
>> > And then, normally, I would use the methods exposed by List<Entry> to
>> > perform operations on the Entries (add, remove, etc.). Now, granted,
>> > I would have to implement a method to retrieve the entry by ID just as
>> > done above. But I guess my question may be centered around the
>> > encapsulation standards across the languages? Maybe?
>> >
>> > Does that clarify any? If not, let me know.
>>
>> Well, you'd definately want the getter for the entries, but setting an
>> entire list of entries is kind of weird IMO... Perhaps other people
>> have optinions.
>>
>> -garrett
>>
>
