Thread: [Resteasy-developers] object defaults

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Hi,

Now that we have StringConverter, what about object defaults?
Unfortunately @DefaultValue only accepts a String, so that would mean
another resteasy extension.

Michael Brackx

I looked at the code and it seems that the @DefaultValue is run through 
the converter.  Are you not seeing that behavior?

Michael Brackx wrote:
> Hi,
> 
> Now that we have StringConverter, what about object defaults?
> Unfortunately @DefaultValue only accepts a String, so that would mean
> another resteasy extension.
> 
> Michael Brackx
> 
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-- 
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com

On Thu, Nov 13, 2008 at 6:51 PM, Bill Burke <bb...@re...> wrote:
> I looked at the code and it seems that the @DefaultValue is run through the
> converter.  Are you not seeing that behavior?

Yes i do (actually, i added a test case for that)
What i meant is not specifying the default as string, but as an object.

@DefaultValue(new Pojo("default"))

otherwise you would need to convert the value yourself

@DefaultValue(new PojoStingConverter().toString(new Pojo("default")))

Michael Brackx

>
> Michael Brackx wrote:
>>
>> Hi,
>>
>> Now that we have StringConverter, what about object defaults?
>> Unfortunately @DefaultValue only accepts a String, so that would mean
>> another resteasy extension.
>>
>> Michael Brackx
>>
>> -------------------------------------------------------------------------
>> This SF.Net email is sponsored by the Moblin Your Move Developer's
>> challenge
>> Build the coolest Linux based applications with Moblin SDK & win great
>> prizes
>> Grand prize is a trip for two to an Open Source event anywhere in the
>> world
>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>> _______________________________________________
>> Resteasy-developers mailing list
>> Res...@li...
>> https://lists.sourceforge.net/lists/listinfo/resteasy-developers
>
> --
> Bill Burke
> JBoss, a division of Red Hat
> http://bill.burkecentral.com
>

Michael Brackx wrote:
> On Thu, Nov 13, 2008 at 6:51 PM, Bill Burke <bb...@re...> wrote:
>> I looked at the code and it seems that the @DefaultValue is run through the
>> converter.  Are you not seeing that behavior?
> 
> Yes i do (actually, i added a test case for that)
> What i meant is not specifying the default as string, but as an object.
> 
> @DefaultValue(new Pojo("default"))
> 
> otherwise you would need to convert the value yourself
> 
> @DefaultValue(new PojoStingConverter().toString(new Pojo("default")))
> 

Both are illegal.  You can only use primitive constants within 
annotations as they are compiled directly into the bytecode.

Bill

-- 
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com

@DefaultValue(DefaultPojo.class) ?
Probably not that useful.

@DefaultValue(DefaultPojoFactory.class) ?

@DefaultValue(useProvider = true)
@DefaultValue()
and a new provider interface ?

public interface DefaultValueProvider<T> {
  T get();
}

Michael Brackx

On Thu, Nov 13, 2008 at 7:09 PM, Bill Burke <bb...@re...> wrote:
>
>
> Michael Brackx wrote:
>>
>> On Thu, Nov 13, 2008 at 6:51 PM, Bill Burke <bb...@re...> wrote:
>>>
>>> I looked at the code and it seems that the @DefaultValue is run through
>>> the
>>> converter.  Are you not seeing that behavior?
>>
>> Yes i do (actually, i added a test case for that)
>> What i meant is not specifying the default as string, but as an object.
>>
>> @DefaultValue(new Pojo("default"))
>>
>> otherwise you would need to convert the value yourself
>>
>> @DefaultValue(new PojoStingConverter().toString(new Pojo("default")))
>>
>
> Both are illegal.  You can only use primitive constants within annotations
> as they are compiled directly into the bytecode.
>
> Bill
>
> --
> Bill Burke
> JBoss, a division of Red Hat
> http://bill.burkecentral.com
>

Ok, but not until next release.  I want to release on Monday and begin 
the TCK work.

Michael Brackx wrote:
> @DefaultValue(DefaultPojo.class) ?
> Probably not that useful.
> 
> @DefaultValue(DefaultPojoFactory.class) ?
> 
> @DefaultValue(useProvider = true)
> @DefaultValue()
> and a new provider interface ?
> 
> public interface DefaultValueProvider<T> {
>   T get();
> }
> 
> Michael Brackx
> 
> On Thu, Nov 13, 2008 at 7:09 PM, Bill Burke <bb...@re...> wrote:
>>
>> Michael Brackx wrote:
>>> On Thu, Nov 13, 2008 at 6:51 PM, Bill Burke <bb...@re...> wrote:
>>>> I looked at the code and it seems that the @DefaultValue is run through
>>>> the
>>>> converter.  Are you not seeing that behavior?
>>> Yes i do (actually, i added a test case for that)
>>> What i meant is not specifying the default as string, but as an object.
>>>
>>> @DefaultValue(new Pojo("default"))
>>>
>>> otherwise you would need to convert the value yourself
>>>
>>> @DefaultValue(new PojoStingConverter().toString(new Pojo("default")))
>>>
>> Both are illegal.  You can only use primitive constants within annotations
>> as they are compiled directly into the bytecode.
>>
>> Bill
>>
>> --
>> Bill Burke
>> JBoss, a division of Red Hat
>> http://bill.burkecentral.com
>>

-- 
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com

On Thu, Nov 13, 2008 at 7:55 PM, Bill Burke <bb...@re...> wrote:
> Ok, but not until next release.  I want to release on Monday and begin the
> TCK work.

No problem. I was just "thinking out loud".

The problem with a DefaultValueProvider is that you can only have
default value one per type.
Unless you pass some (primitive) parameters with the annotation.
Also, it is less clear than a constant.

Michael