Sevak problem

[Ulrich Mayring <ul...@denic.de>]

Hello,

I've developed a block that runs fine under Phoenix, but not in a 
servlet under Sevak. The exception I get:

java.lang.InstantiationException: Service Exception for servlet 
DemoServlet:Unable to provide implementation for 
test.sevakTester.helloWorldBlock.HelloWorld
jvm 1    |      at 
org.apache.avalon.apps.sevak.blocks.jetty.SevakServletHolder.newInstance(SevakServletHolder.java:62)

This exception usually signifies that something is wrong with 
assembly.xml or the block's .xinfo file. However, as the block deploys 
fine under Phoenix, there must be something else.

The problem occurs in the servlet's service method:

m_HelloWorld = 
(HelloWorld)serviceManager.lookup(HelloWorld.class.getName());

But this exact line does work in the service method of another block 
under Phoenix. The servlet itself, i.e. without this line, also works 
fine - Sevak deploys it and I can access it from the webbrowser.

Perhaps the servlet needs the equivalent of a .xinfo file?

cheers,

Ulrich



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Re: Sevak problem

[Paul Hammant <Pa...@yahoo.com>]

Ulrich,

>You'll get it tomorrow. No virus included, but a suspected Sevak bug,
>which will either take you weeks to fix or months to explain to me that
>it's actually a feature :-P
>
Minutes I hope.

>Source is no problem, but you'll have to tell me in what form you need
>it. For example, package name, format of build script etc.
>  
>
Zip containing whatever directory layout with build.xml

:-)

-ph


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Re: Sevak problem

[Ulrich Mayring <ul...@mayring.de>]

Paul Hammant wrote:
> 
> Ulrich,
> 
> Yeah, email it to me (no virus please ;-)  always interested in new
> blocks/sars. I'll then pester you to contribute source :-)

You'll get it tomorrow. No virus included, but a suspected Sevak bug,
which will either take you weeks to fix or months to explain to me that
it's actually a feature :-P

Source is no problem, but you'll have to tell me in what form you need
it. For example, package name, format of build script etc.

Ulrich


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Re: Sevak problem

[Paul Hammant <Pa...@yahoo.com>]

Ulrich,

Yeah, email it to me (no virus please ;-)  always interested in new 
blocks/sars. I'll then pester you to contribute source :-)

- Paul

> Paul Hammant wrote:
>
>> Ulrich,
>>
>> You will need to repace the .xinfo file for the JettySevak class.  It 
>> needs to have the additonal
>> dependency.
>>
>> All the servlets will inherit the .xinfo settings for the JettySevak 
>> block (if you use the deploy
>> method with specifiying a separate ServiceManager).  If you do use 
>> the longer deploy method, you
>> have more scope for things.
>
>
> Gotcha, that was the problem, thanks. I'll have a demo app ready soon, 
> the SAR file is 880 KByte, so I'm not going to post it to the list. 
> But if someone is interested, I can mail it (and of course contribute 
> it, if it is deemed useful).
>



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Re: Sevak problem

[Ulrich Mayring <ul...@denic.de>]

Paul Hammant wrote:
> Ulrich,
> 
> You will need to repace the .xinfo file for the JettySevak class.  It needs to have the additonal
> dependency.
> 
> All the servlets will inherit the .xinfo settings for the JettySevak block (if you use the deploy
> method with specifiying a separate ServiceManager).  If you do use the longer deploy method, you
> have more scope for things.

Gotcha, that was the problem, thanks. I'll have a demo app ready soon, 
the SAR file is 880 KByte, so I'm not going to post it to the list. But 
if someone is interested, I can mail it (and of course contribute it, if 
it is deemed useful).

cheers,

Ulrich



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Re: Sevak problem

[Paul Hammant <pa...@yahoo.com>]

Ulrich,

You will need to repace the .xinfo file for the JettySevak class.  It needs to have the additonal
dependency.

All the servlets will inherit the .xinfo settings for the JettySevak block (if you use the deploy
method with specifiying a separate ServiceManager).  If you do use the longer deploy method, you
have more scope for things.

Regards,

- Paul

 --- Ulrich Mayring <ul...@denic.de> wrote: > Hello,
> 
> I've developed a block that runs fine under Phoenix, but not in a 
> servlet under Sevak. The exception I get:
> 
> java.lang.InstantiationException: Service Exception for servlet 
> DemoServlet:Unable to provide implementation for 
> test.sevakTester.helloWorldBlock.HelloWorld
> jvm 1    |      at 
>
org.apache.avalon.apps.sevak.blocks.jetty.SevakServletHolder.newInstance(SevakServletHolder.java:62)
> 
> This exception usually signifies that something is wrong with 
> assembly.xml or the block's .xinfo file. However, as the block deploys 
> fine under Phoenix, there must be something else.
> 
> The problem occurs in the servlet's service method:
> 
> m_HelloWorld = 
> (HelloWorld)serviceManager.lookup(HelloWorld.class.getName());
> 
> But this exact line does work in the service method of another block 
> under Phoenix. The servlet itself, i.e. without this line, also works 
> fine - Sevak deploys it and I can access it from the webbrowser.
> 
> Perhaps the servlet needs the equivalent of a .xinfo file?
> 
> cheers,
> 
> Ulrich
> 
> 
> 
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> To unsubscribe, e-mail:   <ma...@jakarta.apache.org>
> For additional commands, e-mail: <ma...@jakarta.apache.org>
>  

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