[import] how to POST ordered structures

[Nicolas Peltier <np...@adobe.com>]

Hi,

json objects’ key values are not ordered, so does that mean there is no choice but to use xml to POST ordered structure?

Thanks,
Nicolas

Re: [import] how to POST ordered structures

[Nicolas Peltier <np...@adobe.com>]

xml hurts, would it be acceptable to have a “internal” key in object that specifies the order?

> On 19 Apr 2016, at 18:11, Nicolas Peltier <np...@adobe.com> wrote:
> 
> Hi,
> 
> json objects’ key values are not ordered, so does that mean there is no choice but to use xml to POST ordered structure?
> 
> Thanks,
> Nicolas

Re: [import] how to POST ordered structures

[Nicolas Peltier <np...@adobe.com>]

Thanks Bertrand,

just tracked https://issues.apache.org/jira/browse/SLING-5682
> On 20 Apr 2016, at 14:53, Bertrand Delacretaz <bd...@apache.org> wrote:
> 
> {
>    "title": "The parent node",
>    "SLING:ordered": [{
>        "SLING:name": "first",
>        "title": "This comes first"
>    }, {
>        "SLING:name": "second",
>        "title": "This comes second"
>    }]
> }
> 
> This needs to be triggered by selector or content-type switch so that
> the existing POST behavior is unchanged.
> 
> I suppose having SLING:ordered should then also set the appropriate
> mixin on the parent node.

Re: [import] how to POST ordered structures

[Bertrand Delacretaz <bd...@apache.org>]

On Wed, Apr 20, 2016 at 2:17 PM, Nicolas Peltier <np...@adobe.com> wrote:
>>...the alternative being to extend the POST servlet to do what
>> you need, as it's generally useful.
> right, how would you see it? custom key value like “slingpost_order”:[“child1”,”child2”,”child3”] ? ...

That won't scale if you have many objects, how about submitting
content as a json array, maybe something like this:

{
    "title": "The parent node",
    "SLING:ordered": [{
        "SLING:name": "first",
        "title": "This comes first"
    }, {
        "SLING:name": "second",
        "title": "This comes second"
    }]
}

This needs to be triggered by selector or content-type switch so that
the existing POST behavior is unchanged.

I suppose having SLING:ordered should then also set the appropriate
mixin on the parent node.

-Bertrand

Re: [import] how to POST ordered structures

[Nicolas Peltier <np...@adobe.com>]

> 
> OOTB yes, the alternative being to extend the POST servlet to do what
> you need, as it's generally useful.
right, how would you see it? custom key value like “slingpost_order”:[“child1”,”child2”,”child3”] ?


> 
> -Bertrand

Re: [import] how to POST ordered structures

[Bertrand Delacretaz <bd...@apache.org>]

Hi Nicolas,

On Wed, Apr 20, 2016 at 11:11 AM, Nicolas Peltier <np...@adobe.com> wrote:
> ...so to me ootb i have 2 choices...

OOTB yes, the alternative being to extend the POST servlet to do what
you need, as it's generally useful.

-Bertrand

Re: [import] how to POST ordered structures

[Nicolas Peltier <np...@adobe.com>]

Hi,

i don’t see how with current api [0] i could inject an array for child nodes (would miss the child node name, and the parent type)
so to me ootb i have 2 choices (not sure of the one i dislike the most):
- xml import as i’m already using json in my client jar, so adding another lib just for that is a pity,
- doing 2 POST, second for ordering (not even sure i can do that in one POST), as i want to minimize the request #

[0] curl -F ":operation=import" -F":contentType=json" -F:"name=sample" -F":content=…”

> On 20 Apr 2016, at 11:01, Bertrand Delacretaz <bd...@apache.org> wrote:
> 
> Hi,
> 
> On Tue, Apr 19, 2016 at 6:11 PM, Nicolas Peltier <np...@adobe.com> wrote:
>> json objects’ key values are not ordered, so does that mean there is no choice
>> but to use xml to POST ordered structure?...
> 
> Could you use arrays instead of objects in your POST requests to keep ordering?
> 
> I don't remember how our default POST servlet or content loader handle
> that so you might need to experiment.
> 
> Similarly, our json GET servlet [1] uses an .harray selector to switch
> to arrays instead of objects to keep ordering.
> 
> -Bertrand
> 
> [1] https://sling.apache.org/documentation/bundles/rendering-content-default-get-servlets.html#default-json-rendering

Re: [import] how to POST ordered structures

[Bertrand Delacretaz <bd...@apache.org>]

Hi,

On Tue, Apr 19, 2016 at 6:11 PM, Nicolas Peltier <np...@adobe.com> wrote:
> json objects’ key values are not ordered, so does that mean there is no choice
> but to use xml to POST ordered structure?...

Could you use arrays instead of objects in your POST requests to keep ordering?

I don't remember how our default POST servlet or content loader handle
that so you might need to experiment.

Similarly, our json GET servlet [1] uses an .harray selector to switch
to arrays instead of objects to keep ordering.

-Bertrand

[1] https://sling.apache.org/documentation/bundles/rendering-content-default-get-servlets.html#default-json-rendering