[hibernate-dev] Do you know of any ASL 2 implementation of...

Emmanuel Bernard emmanuel at hibernate.org
Tue Feb 3 15:03:38 EST 2009


Cool :)
We will add jType to the Bean Validation RI Alpha2 (one release after  
the first).
http://opensource.atlassian.com/projects/hibernate/browse/BVAL-111

On  Feb 2, 2009, at 23:40, Mark Hobson wrote:

> Okay, I've created the project here:
>
> http://code.google.com/p/jtype/
>
> The method you're after is TypeUtils.isAssignable.  I'm interested in
> fleshing out this library in future, keeping the focus on pure type
> operations.  I'd like to implement full type inference and type
> capturing in line with the JLS as I've had a requirement for this in
> the past.  Do let me know if you have any comments or suggestions.
>
> Cheers,
>
> Mark
>
> 2009/1/30 Emmanuel Bernard <emmanuel at hibernate.org>:
>> all good.
>>
>> On  Jan 30, 2009, at 09:46, Mark Hobson wrote:
>>
>>> Cool, I'll aim to create the project as soon as I get a free moment.
>>> Extra hands would be appreciated so I can't see a problem with  
>>> giving
>>> you commit access.  Copyright isn't an issue as I work for my own
>>> company :)
>>>
>>> I'll post the URL once it's up there.  Likely to be after the  
>>> weekend
>>> if that's alright?
>>>
>>> Cheers,
>>>
>>> Mark
>>>
>>> 2009/1/30 Emmanuel Bernard <emmanuel at hibernate.org>:
>>>>
>>>> That's fine, you can go host it on google-code under the ASL 2.  
>>>> That way
>>>> we
>>>> can use it as a source level or jar level dependency.
>>>>
>>>> It would be nice to get commit access so we can participate in  
>>>> enhancing
>>>> the
>>>> support coverage.
>>>>
>>>> Jboss.org might have some benefits as a forge but the .org team  
>>>> is very
>>>> busy
>>>> at the moment, so creating a new project would be a bit low in  
>>>> priority.
>>>> Google code is quite nice and clean.
>>>>
>>>> BTW before dropping the code, make sure you have the copyright  
>>>> rights (if
>>>> you developed that for a company, you might have to ask them).
>>>>
>>>> Thanks!
>>>>
>>>> Emmanuel
>>>>
>>>> On  Jan 30, 2009, at 05:04, Mark Hobson wrote:
>>>>
>>>>> ASL 2.0 is fine with me.  I was thinking about hosting it  
>>>>> somewhere
>>>>> like Google Code since there's a few open-source projects that  
>>>>> I've
>>>>> seen which could benefit from it.  Let me know, I can create a  
>>>>> project
>>>>> and you can give it a spin.
>>>>>
>>>>> Cheers,
>>>>>
>>>>> Mark
>>>>>
>>>>> 2009/1/30 Emmanuel Bernard <emmanuel at hibernate.org>:
>>>>>>
>>>>>> Cool, that's already a nice start.
>>>>>> Let me see if I find something.
>>>>>>
>>>>>> Would you be OK to contribute it under the ASL 2.0 license to us?
>>>>>>
>>>>>> On  Jan 29, 2009, at 09:44, Mark Hobson wrote:
>>>>>>
>>>>>>> I haven't gone into supporting type variables, hence I don't  
>>>>>>> perform
>>>>>>> type capturing or inference yet, although I would be  
>>>>>>> interested in
>>>>>>> adding this.  For an example of what is currently implemented,  
>>>>>>> the
>>>>>>> following are from the tests:
>>>>>>>
>>>>>>> Number <: Integer
>>>>>>> Object <: Integer
>>>>>>> List <: List<Integer>
>>>>>>> Collection<Integer> <: List<Integer>
>>>>>>> Collection<Integer> <: ArrayList<Integer>
>>>>>>> List<Integer> !<: Set<Integer>
>>>>>>> List<Number> !<: List<Integer>
>>>>>>> List<?> <: List<Integer>
>>>>>>> List<? extends Number> <: List<Number>
>>>>>>> List<? extends Number> <: List<Integer>
>>>>>>> List<? extends Number> !<: List<Object>
>>>>>>> List<? super Number> <: List<Number>
>>>>>>> List<? super Number> <: List<Object>
>>>>>>> List<? super Number> !<: List<Integer>
>>>>>>> List<Integer> <: IntegerArrayList
>>>>>>>
>>>>>>> Let me know if you find any existing libraries since I use  
>>>>>>> this in my
>>>>>>> other projects.  If there's nothing out there then open- 
>>>>>>> sourcing this
>>>>>>> would stop people from having to reinvent the wheel.
>>>>>>>
>>>>>>> Cheers,
>>>>>>>
>>>>>>> Mark
>>>>>>>
>>>>>>> 2009/1/29 Emmanuel Bernard <emmanuel at hibernate.org>:
>>>>>>>>
>>>>>>>> If I can't find an other alternative that would surely be of  
>>>>>>>> help yes
>>>>>>>> :)
>>>>>>>>
>>>>>>>> Do you know how much of the subtype rules you have implemented?
>>>>>>>>
>>>>>>>> The one that sounded non trivial to me were around detecting  
>>>>>>>> that
>>>>>>>> generic
>>>>>>>> are supertypes of others:
>>>>>>>> - containment and equivalence
>>>>>>>> - capture conversion
>>>>>>>> - intersection types
>>>>>>>> - management of bounds
>>>>>>>> (using the language of the JSL)
>>>>>>>>
>>>>>>>>
>>>>>>>> On  Jan 29, 2009, at 05:49, Mark Hobson wrote:
>>>>>>>>
>>>>>>>>> I've written a small utility library that provides methods  
>>>>>>>>> to work
>>>>>>>>> with Types, specifically it contains such a method  
>>>>>>>>> isAssignable(Type
>>>>>>>>> supertype, Type type) that should satisfy your requirements.
>>>>>>>>>
>>>>>>>>> I've been considering open-sourcing it so would be happy to  
>>>>>>>>> do so if
>>>>>>>>> you were interested?
>>>>>>>>>
>>>>>>>>> Cheers,
>>>>>>>>>
>>>>>>>>> Mark
>>>>>>>>>
>>>>>>>>> 2009/1/29 Emmanuel Bernard <emmanuel at hibernate.org>:
>>>>>>>>>>
>>>>>>>>>> Specifically a routine like
>>>>>>>>>> boolean isSuperType(Type super, Type, sub);
>>>>>>>>>> note Type, not Class<?>
>>>>>>>>>>
>>>>>>>>>> On  Jan 28, 2009, at 21:22, Emmanuel Bernard wrote:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> http://java.sun.com/docs/books/jls/third_edition/html/typesValues.html#4.10
>>>>>>>>>>
>>>>>>>>>> Subtyping
>>>>>>>>>>
>>>>>>>>>> I am looking for an ASL 2 / BSD implementation of the  
>>>>>>>>>> subtyping
>>>>>>>>>> resolution
>>>>>>>>>> algorithm in Java.
>>>>>>>>>>
>>>>>>>>>> I am thinking Harmony might have one.
>>>>>>>>>>
>>>>>>>>>> Anybody knows?
>>>>>>>>>>
>>>>>>>>>> _______________________________________________
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>>>>>>>>>> https://lists.jboss.org/mailman/listinfo/hibernate-dev
>>>>>>>>>>
>>>>>>>>>>
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>>>>>>>>>> hibernate-dev mailing list
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>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>
>>>>>>
>>>>
>>>>
>>
>>




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