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Posted to users@cocoon.apache.org by Robin Wyles <ro...@robinwyles.com> on 2008/06/16 22:40:02 UTC
MultipartHttpServletRequest in a generator
Hi,
How can I get hold of a MultipartHttpServletRequest in a generator?
If I do this...
final WebApplicationContext parentContext =
WebAppContextUtils.getCurrentWebApplicationContext();
final ProcessInfoProvider infoProvider = (ProcessInfoProvider)
parentContext.getBean(ProcessInfoProvider.ROLE);
HttpServletRequest request = infoProvider.getRequest();
MultipartHttpServletRequest mpr = (MultipartHttpServletRequest) request;
I get the following error when the final line is executed...
java.lang.ClassCastException: $Proxy13
Eclipse debugger shows that request is an instance of
MultipartHttpServletRequest.
What's the secret?
Cheers,
Robin
Re: MultipartHttpServletRequest in a generator
Posted by Joerg Heinicke <jo...@gmx.de>.
On 16.06.2008 23:10, Grzegorz Kossakowski wrote:
> Situations like this are little bit worrying me but anyway standard
> question: why do you want to cast to MultipartHttpServletRequest?
MultipartHttpServletRequest provides a method get(String) for access to
multiparts which can't be accessed in another way. This method is not
available from an interface.
Is this proxy castable to org.springframework.aop.scope.ScopedObject?
Then you would be able to call getTargetObject() and so get access to
the actual MultipartHttpServletRequest object.
Joerg
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Re: MultipartHttpServletRequest in a generator
Posted by Robin Wyles <ro...@robinwyles.com>.
Grzegorz,
How's this:
1. Multipart request is received, its parts (some binary, some XML)
need to be extracted and processed varyingly.
2. Suitable response XML and response code should be be returned.
Based on these requirements and my slowly but ever expanding
knowledge of cocoon, I would've thought a generator would be the
correct component to handle that...
All I'm really having trouble with is getting the parts out of the
incoming request.
Robin
On 16 Jun 2008, at 22:26, Grzegorz Kossakowski wrote:
> Robin Wyles pisze:
>> By the way you asked, I guess in some sort of ridiculous attempt
>> to get hold of some binary data that has been posted to a pipeline
>> containing the generator :)
>
> Robin, not sure if I understood you correctly but probably that's
> another sign of /bad/ approach. ;-)
> Good approaches are good because they can explained to someone else
> easily.
>
>
> --
> Grzegorz Kossakowski
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@cocoon.apache.org
> For additional commands, e-mail: users-help@cocoon.apache.org
>
Re: MultipartHttpServletRequest in a generator
Posted by Grzegorz Kossakowski <gr...@tuffmail.com>.
Robin Wyles pisze:
> By the way you asked, I guess in some sort of ridiculous attempt to get
> hold of some binary data that has been posted to a pipeline containing
> the generator :)
Robin, not sure if I understood you correctly but probably that's another sign of /bad/ approach. ;-)
Good approaches are good because they can explained to someone else easily.
--
Grzegorz Kossakowski
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Re: MultipartHttpServletRequest in a generator
Posted by Robin Wyles <ro...@robinwyles.com>.
By the way you asked, I guess in some sort of ridiculous attempt to
get hold of some binary data that has been posted to a pipeline
containing the generator :)
robin
On 16 Jun 2008, at 22:10, Grzegorz Kossakowski wrote:
> Robin Wyles pisze:
>> Hi,
>> How can I get hold of a MultipartHttpServletRequest in a generator?
>> If I do this...
>> final WebApplicationContext parentContext =
>> WebAppContextUtils.getCurrentWebApplicationContext();
>> final ProcessInfoProvider infoProvider = (ProcessInfoProvider)
>> parentContext.getBean(ProcessInfoProvider.ROLE);
>> HttpServletRequest request = infoProvider.getRequest();
>> MultipartHttpServletRequest mpr = (MultipartHttpServletRequest)
>> request;
>> I get the following error when the final line is executed...
>> java.lang.ClassCastException: $Proxy13
>> Eclipse debugger shows that request is an instance of
>> MultipartHttpServletRequest.
>> What's the secret?
>
> The secret is how JVM proxies work with the fact that
> MultipartHttpServletRequest is a class not interface.
>
> Situations like this are little bit worrying me but anyway standard
> question: why do you want to cast to MultipartHttpServletRequest?
>
> --
> Grzegorz Kossakowski
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@cocoon.apache.org
> For additional commands, e-mail: users-help@cocoon.apache.org
>
Re: MultipartHttpServletRequest in a generator
Posted by Grzegorz Kossakowski <gr...@tuffmail.com>.
Robin Wyles pisze:
> Hi,
>
> How can I get hold of a MultipartHttpServletRequest in a generator?
>
> If I do this...
>
> final WebApplicationContext parentContext =
> WebAppContextUtils.getCurrentWebApplicationContext();
> final ProcessInfoProvider infoProvider = (ProcessInfoProvider)
> parentContext.getBean(ProcessInfoProvider.ROLE);
> HttpServletRequest request = infoProvider.getRequest();
> MultipartHttpServletRequest mpr = (MultipartHttpServletRequest) request;
>
> I get the following error when the final line is executed...
>
> java.lang.ClassCastException: $Proxy13
>
> Eclipse debugger shows that request is an instance of
> MultipartHttpServletRequest.
>
> What's the secret?
The secret is how JVM proxies work with the fact that MultipartHttpServletRequest is a class not
interface.
Situations like this are little bit worrying me but anyway standard question: why do you want to
cast to MultipartHttpServletRequest?
--
Grzegorz Kossakowski
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