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From J Chris Anderson <jch...@gmail.com>
Subject Re: expected behaviour of changes feed
Date Sun, 08 Aug 2010 16:10:39 GMT

On Aug 8, 2010, at 8:36 AM, Cliff Williams wrote:

> Mikeal & Sebastian
> 
> tks for explanation ......... all clear in my head now.
> 
> J Chris
> 
> That's just perfect for validation. Appreciate the link.
> 

FYI there's a minor JavaScript bug in 1.0.0 that prevent the versioning technique in that
article from working out of the box. The bug has been fixed in trunk and the 1.0.x branch,
and the fix will be in the 1.0.1 release which is coming out this week.

Chris

> Thank you all for your help
> 
> very best regards
> 
> Cliff
> 
> On 07/08/10 18:41, J Chris Anderson wrote:
>> For your use case you might look at these versioning techniques:
>> 
>> http://blog.couch.io/post/632718824/simple-document-versioning-with-couchdb
>> 
>> 
>> On Aug 7, 2010, at 9:55 AM, Mikeal Rogers wrote:
>> 
>>   
>>> the changes feed only shows the update sequences for the current documents
>>> in the database. it doesn't show sequences for old revisions of documents
>>> because they will go away after compaction anyway.
>>> 
>>> every time a document is updated it removes it's previous sequence from the
>>> by-sequence index and the revision information is only available by querying
>>> for it on the document itself (until you compact).
>>> 
>>> -Mikeal
>>> 
>>> On Sat, Aug 7, 2010 at 7:56 AM, Cliff Williams<cliffywills@aol.com>  wrote:
>>> 
>>>     
>>>> All,
>>>> 
>>>> Good afternoon.
>>>> 
>>>> using this url
>>>> http://10.0.0.10:5984/test/_changes?since=14966&all_docs=true
>>>> 
>>>> I get the following results
>>>> 
>>>> {"results":[
>>>> 
>>>> {"seq":14971,"id":"ab53d85b92247bcbf251ef9abed4d998","changes":[{"rev":"2-b9cfa00cc907767d6bfdeca7dee5008f"}]},
>>>> 
>>>> {"seq":14973,"id":"ab53d85b92247bcbf251ef9abed4d512","changes":[{"rev":"3-ec350b40276b7c16c09ef485dd8f14aa"}]},
>>>> 
>>>> {"seq":14981,"id":"ab53d85b92247bcbf251ef9abed4a63a","changes":[{"rev":"2-fe0cb06e7046e9d41d326b3e8c30ed0c"}]},
>>>> 
>>>> {"seq":14982,"id":"_design/test","changes":[{"rev":"8-5a565b32bca9b42479543441f23a2e61"}]},
>>>> 
>>>> {"seq":14983,"id":"ab53d85b92247bcbf251ef9abed4b4d8","changes":[{"rev":"2-ed899403c21b6cca22f7e68f05d92b0c"}]},
>>>> 
>>>> {"seq":14984,"id":"ab53d85b92247bcbf251ef9abed47f2f","changes":[{"rev":"2-30d5cf6764f2e6c1795d65f272817238"}]},
>>>> 
>>>> {"seq":15006,"id":"ab53d85b92247bcbf251ef9abed4e544","changes":[{"rev":"10-e6856aac928ff1e2e019b556de8f1760"}]},
>>>> 
>>>> {"seq":15007,"id":"ab53d85b92247bcbf251ef9abed49e50","changes":[{"rev":"19-d7629eac5a5bd2133a19178fdc9277e6"}]}
>>>> ],
>>>> "last_seq":15007}
>>>> 
>>>> now if I make an amendment to the document at sequence number 15006 and
>>>> using the same URL I get the following results.
>>>> 
>>>> {"results":[
>>>> 
>>>> {"seq":14971,"id":"ab53d85b92247bcbf251ef9abed4d998","changes":[{"rev":"2-b9cfa00cc907767d6bfdeca7dee5008f"}]},
>>>> 
>>>> {"seq":14973,"id":"ab53d85b92247bcbf251ef9abed4d512","changes":[{"rev":"3-ec350b40276b7c16c09ef485dd8f14aa"}]},
>>>> 
>>>> {"seq":14981,"id":"ab53d85b92247bcbf251ef9abed4a63a","changes":[{"rev":"2-fe0cb06e7046e9d41d326b3e8c30ed0c"}]},
>>>> 
>>>> {"seq":14982,"id":"_design/test","changes":[{"rev":"8-5a565b32bca9b42479543441f23a2e61"}]},
>>>> 
>>>> {"seq":14983,"id":"ab53d85b92247bcbf251ef9abed4b4d8","changes":[{"rev":"2-ed899403c21b6cca22f7e68f05d92b0c"}]},
>>>> 
>>>> {"seq":14984,"id":"ab53d85b92247bcbf251ef9abed47f2f","changes":[{"rev":"2-30d5cf6764f2e6c1795d65f272817238"}]},
>>>> 
>>>> {"seq":15007,"id":"ab53d85b92247bcbf251ef9abed49e50","changes":[{"rev":"19-d7629eac5a5bd2133a19178fdc9277e6"}]},
>>>> 
>>>> {"seq":15008,"id":"ab53d85b92247bcbf251ef9abed4e544","changes":[{"rev":"11-e01ef09eef56397e345f598fd2069f22"}]}
>>>> ],
>>>> "last_seq":15008}
>>>> 
>>>> 
>>>> I think that it is fairly straight forward to ascertain that we are looking
>>>> at latest revision sequences.
>>>> 
>>>> Is there a way to see all sequence numbers?? I am of course aware of the
>>>> continuous feed but do not wish to use it.
>>>> My use case is for a pharma regulated clinical trials database where i need
>>>> a total audit of every single change made to the database.
>>>> 
>>>> best regards
>>>> 
>>>> Cliff
>>>> 
>>>>       
>>   


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