Thilo Goetz wrote:
> Jörn Kottmann wrote:
>
>> Thilo Goetz wrote:
>>
>>> Jörn Kottmann wrote:
>>>
>>>
>>>> Jörn Kottmann wrote:
>>>>
>>>>
>>>>> Jörn Kottmann wrote:
>>>>>
>>>>>
>>>>>> Jörn Kottmann wrote:
>>>>>>
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> after all the discussion we had I think thats the correct
>>>>>>> way to generify FSIndexRepository:
>>>>>>>
>>>>>>> interface FSIndexRepository {
>>>>>>> FSIndex<FeatureStructure> getIndex(String label);
>>>>>>> FSIterator<FeatureStructure> getAllIndexedFS(Type aType);
>>>>>>> ...
>>>>>>> }
>>>>>>>
>>>>>>>
>>>>>> It generified now and also getIndexes:
>>>>>> Iterator<FSIndex<FeatureStructure>> getIndexes();
>>>>>>
>>>>>>
>>>>> Stupid question, but how can a FSIndex<FeatureStructure> be converted
>>>>> into a FSIndex<AnnotationFS> ? Since casting directy is not possible,
>>>>> do I need to write some kind of adapter which does the casting for me ?
>>>>>
>>>>>
>>>> FSIndex<FeatureStruture> indexFS
>>>> FSIndex<AnnotationFS> indexAnnotationFS = (FSIndex<AnnotationFS>)
>>>> (Object) indexFS;
>>>>
>>>> Could it be done like this ?
>>>>
>>>> Jörn
>>>>
>>>>
>>> Yes, and it's an excellent example of how screwed up Java
>>> generics are. BTW, I recommend whatever Angelika Langer
>>> has to say on the topic:
>>> http://www.angelikalanger.com/Articles/Topics.html#JAVA
>>> Some of it is only available in German, but she has English
>>> translations for most of her articles. She calls this a
>>> "double-fisted cast".
>>>
>>>
>> Could not find the part where she talks about double fisted casts
>> and googling for it was not successful also.
>>
>> Do you have a link ?
>>
>
> http://www.angelikalanger.com/Articles/JavaMagazin/Generics/GenericsPart2.html
>
> This one's in German, didn't check if there's an English version.
>
A mostly ok version can be found by googling "double-fisted cast" and in
the hit list (it's the 4th item), clicking "translate this page" - for
people in some geographies.
Or, just go to http://translate.google.com and put in the url.
-Marshall
>
>> Jörn
>>
>>
>
>
>
