Re: [Springframework-developer] Use .java file as scripted beans

[Rob H. <ro...@in...>]

On 20 Jun 2006, at 09:39, Nicolas De Loof wrote:

>
>
> Rob Harrop a =E9crit :
>> This is something that Adrian and I have been discussing for some
>> time. In theory it is entirely possible, but we have all seen enough
>> horror at the hands of classloaders to know that it isnt entirely
>> trivial.
> Isn't Spring expected to make easy those non-trivial stuff  ;-)

Indeed! This is definitely something we are focused on.
>
>> One interesting thing to note is that all valid Java
>> programs are valid Groovy programs.
> I did not try groovy miself. Does this mean that I can open a .java =20=

> file
> using Spring groovy script support and get a bean ?

It should - I haven't actually tried it but there should be no issues.
>
>> Another area that may be of
>> interest to many people is the ability to embed the JDT compiler from
>> Eclipse to compile sources on the fly.
>>
>> In practice on the fly compilation for certain classes that are
>> hidden behind statically compiled interfaces is not tremendously
>> difficult. The issues arise when you start to talk about dynamically
>> compiling the entire application and arbitrarily replacing individual
>> pieces. This can result in some very interesting dependency issues.
>>
> I was expecting such restriction. I only consider the ability to =20
> change
> service code on the fly without repackaging / redeploying / restarting
> my webapp. I know jetty runner starts quicker than tomcat and =20
> Spring 2.0
> has better lazy-init support, but this only make this process quicker,
> not easier. Some of my process requires to follow a long flow in the
> webapp, and I need to repeat it on every code change. Hot-replacing =20=

> the
> service implementation code would make it trivial.

I'll see what I can do in the 2.1 timeframe for getting a JDT/Janino =20
based solution working.
>
> That beeing said, if you find a way to solve those
> classloading/compiling issues for replacing arbitrary code in a =20
> running
> app and hot-refactoring interfaces, you're welcome :-D
>
> I'll take a look at  Niklas suggestion about janino classloader.
> Thanks.
>
> Nico.
>
>> Rob
>>
>> On 20 Jun 2006, at 08:47, Niklas Therning wrote:
>>
>
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--=20
Rob Harrop
VP, Technology Strategy
Interface21 - Spring Services from the Source
http://www.springframework.com