Someone feels like picking up the OSGi and Felix issues? Was: [FreeMarker-user] freemarker.template.Configuration (v.2.3.22) cannot be injected because of final method decleration in OSGI environment

On second though, having some final methods is not a problem. The
problem is simply that Freemarker doesn't define a service interface,
which then Configuration would implement (and then only the methods
that are also in the service interface must be non-final). If I add a
such interface (is freemarker.template.FreemarkerService a good
name?), will you or somebody else test if now it indeed works with
Felix / Blueprint, and if the interface contains the methods that are
expected from a "Freemarker service" (I guess the setting setters
won't be there for example)?

We also have some other strange problem reported for Felix:
https://sourceforge.net/p/freemarker/bugs/428/

Someone feels like picking this up, and test that (A) the Freemarker
bundle (that's just freemarker.jar - it's already an OSGi bundle) can
be used under Felix without problems from a different bundle via its
package exports, and (B) that it can be used as a Blueprint service
out-of-the-box? Ideally, testing means testing in the form of a JUnit
tests.

-- 
Thanks,
 Daniel Dekany


Thursday, May 21, 2015, 12:59:25 AM, Daniel Dekany wrote:

> Note that "works on OSGi" doesn't imply at all that it can be (easily)
> proxyed (for Buleprint or whatever). It just means that you can drop
> the jar into an OSGi container, and then can link to it from the other
> bundles.
>
> OTOH surely if somebody for some reason wants to proxy Configuration,
> final methods make it hard (requires byte code manipulation). I will
> consider making them non-final in 2.3.23.
>
>
> Wednesday, May 20, 2015, 4:30:43 PM, halil wrote:
>
>> Hi All,
>>
>> I could not create a reference of freemarker.template.Configuration
>> on OSGI blueprint file. I referenced it as below. Blueprint throwed
>> exception which states that Configuration class has final method
>> declerations. It seems that OSGI (org.apache.felix.framework-4.4.1)
>> does not support injection of classes having final method declerations...
>>
>> <reference id="freemarkerCfgRef"
>> interface="freemarker.template.Configuration"  ext:proxy-method='classes' />
>>
>> When I did below steps, I succeed.
>>
>> 1. create an interface of Configuration class
>> 2. put it a new package named freemarker.template.api.
>> 3. Configuration class now implements
>> freemarker.template.api.FreeMarkerConfigurationInt
>> 3. reference it as below
>>
>> <reference id="freemarkerCfgRef"
>> interface="freemarker.template.api.FreeMarkerConfigurationInt" />
>>
>> Now, it works perfectly...
>>
>> I read some mails of developers stating that freemarker works on
>> OSGI but I could not succeed until I have done it as above...
>>
>>
>> I would like to inform you,
>>
>>
>> best,
>>
>>
>> -halil.
>


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