[Registry-dev] Retrieving a Resource after deletion without adding it again

[Chathura C. Ekanayake]

We can rollback deletions by restoring the previous version of the 
parent collection.

Thanks,
Chathura

Paul Fremantle wrote:
> I agree we need to be able to rollback deletions. I thought we already 
> could!
>
> In addition, we should think about whether we want to implement the 
> hash function/delta checking ourselves in the registry.
>
> Paul
>
> Tyrell Perera wrote:
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>> Hi devs,
>>
>> I have a scenario in the Mashup Server, where a Mashup will get
>> redeployed by simply doing a unix style 'touch' of the js file or
>> editing and saving the js file. At both times the service will be
>> undeployed and deployed back.
>>
>> Currently we delete the Mashup from the Registry at undeployment and
>> 'put' it back again at deployment. However, this adds un-necessary
>> records to the registry database by means of versions when the delta
>> between two deployments is '0'.
>>
>> I worked out an MD5 based verification mechanism on the Mashup side to
>> make sure there is a delta and do a 'put' only if required. But the
>> problem I have right now is that there is no way to 'rollback' a
>> deletion in such a scenario. If there is such a thing, I can simply
>> rollback the deletion on the resource, when there is no delta in the js
>> file between two consecutive deployments.
>>
>> Am I missing something here?
>>
>> thanks,
>> Tyrell
>>
>> - --
>> Tyrell Perera
>> Senior Software Engineer; WSO2, Inc.; http://www.wso2.com/
>> email: tyrell at wso2.com; cell: +94 77 302 2505
>>
>> "Oxygenating the Web Service Platform."
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>> =ooBo
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>