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

[Paul Fremantle]

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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-- 
Paul Fremantle
CTO and Co-Founder, WSO2
OASIS WS-RX TC Co-chair
VP, Apache Synapse

Office: +44 844 484 8143
Cell: +44 798 447 4618

blog: http://pzf.fremantle.org
paul at wso2.com

"Oxygenating the Web Service Platform", www.wso2.com