Hi Nishali,

Sometimes you will get this error If you have same package name with
different extension class names. Its a known error in OSGI. Please check
whether you have multiple extensions in a same package.
eg: org.wso2.cep.extOne and org.wso2.cep.extTwo will throw you the error
when you try to deploy extTwo extension.

Thanks,
Damith.


On Thu, Oct 30, 2014 at 1:30 PM, Nishali Wijesinghe <[email protected]>
wrote:

> Hi,
>
> I'm  trying to write a siddhi custom output attribute aggregator for CEP.
> I wrote the following 2 classes and created the jar file with extension
> Name=ext1 and function Name=StdDev_sample.
>   StdDevOutputAttributeAggregatorSample
>   StdDevOutputAttributeAggregatorSampleFactory
>
> And then I added the jar file to <CEP_HOME>/repository/components/lib and
> then added the fully qualified class name as
> "org.wso2.siddhi.extension.StdDevOutputAttributeAggregatorSampleFactory" to
> <CEP_HOME>/repository/conf/siddhi.
>
> But when i try to use the extension in CEP i get the following error.
>
> No extension exist for OutputAttributeExtension{extensionName='ext1',
> functionName='StdDev_sample', rename='std'}
>
> Thank you.
>
> --
> Nishali Wijesinghe
> Intern - Engineering
> WSO2, Inc.
> lean.enterprise.middleware.
> Tel: +94716913495
>
> _______________________________________________
> Dev mailing list
> [email protected]
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>
>


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