couchdb-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Brian Candler (JIRA)" <j...@apache.org>
Subject [jira] Commented: (COUCHDB-604) _changes feed with ?feed=continuous does not return valid JSON
Date Mon, 21 Dec 2009 13:50:18 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12793203#action_12793203
] 

Brian Candler commented on COUCHDB-604:
---------------------------------------

> if you want the heartbeat feature you'll still need a dummy record. 

A simple newline would still be fine as a heartbeat for 'gets' readers of course. What I meant
was, if you are using a stream parser you probably won't get an event for just reading a newline,
so heartbeat would have to send some real content to be useful in that case.


> _changes feed with ?feed=continuous does not return valid JSON
> --------------------------------------------------------------
>
>                 Key: COUCHDB-604
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-604
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: HTTP Interface
>    Affects Versions: 0.10
>            Reporter: Joscha Feth
>            Priority: Trivial
>
> When using the _changes interface via ?feed=continuous the JSON returned is rather 
> a stream of JSON documents than a valid JSON file itself:
> {"seq":38,"id":"f473fe61a8a53778d91c38b23ed6e20f","changes":[{"rev":"9-d3e71c7f5f991b26fe014d884a27087f"}]}
> {"seq":68,"id":"2a574814d61d9ec8a0ebbf43fa03d75b","changes":[{"rev":"6-67179f215e42d63092dc6b2199a3bf51"}],"deleted":true}
> {"seq":70,"id":"75dbdacca8e475f5909e3cc298905ef8","changes":[{"rev":"1-0dee261a2bd4c7fb7f2abd811974d3f8"}]}
> {"seq":71,"id":"09fb03236f80ea0680a3909c2d788e43","changes":[{"rev":"1-a9646389608c13a5c26f4c14c6863753"}]}
> to be valid there needs to be a root element (and then an array with commata) like in
the non-continuous feed:
> {"results":[
> {"seq":38,"id":"f473fe61a8a53778d91c38b23ed6e20f","changes":[{"rev":"9-d3e71c7f5f991b26fe014d884a27087f"}]},
> {"seq":68,"id":"2a574814d61d9ec8a0ebbf43fa03d75b","changes":[{"rev":"6-67179f215e42d63092dc6b2199a3bf51"}],"deleted":true},
> {"seq":70,"id":"75dbdacca8e475f5909e3cc298905ef8","changes":[{"rev":"1-0dee261a2bd4c7fb7f2abd811974d3f8"}]},
> {"seq":71,"id":"09fb03236f80ea0680a3909c2d788e43","changes":[{"rev":"1-a9646389608c13a5c26f4c14c6863753"}]},
> in short this means that if someone does not parse the change events in an object like
manner (e.g. waiting for a line-ending and then parsing the line), but using a SAX-like parser
(throwing events of each new object, etc.) and expecting the response to be JSON (which it
is not, because its not {x:[{},{},{}]} but {}{}{} which is not valid) there is an error thrown.
> I can see, that people doing this line by line might be okay with the above approach,
but the response is not valid JSON and it would be nice if there were a flag to make the response
valid JSON.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message