Any thoughts?
Anyone?
On Wednesday, December 3, 2014 12:59:58 PM UTC+1, mindplay.dk wrote:
>
> I was somewhat surprised at the format of the REST API response, when
> executing a query along the lines of:
>
> SELECT FROM Person WHERE first_name = 'Rasmus'
>
> What I get, is the following:
>
> array(1) {
> 'result' =>
> array(1) {
> [0] =>
> array(7) {
> '@type' =>
> string(1) "d"
> '@rid' =>
> string(5) "#10:0"
> '@version' =>
> int(2)
> '@class' =>
> string(6) "Person"
> 'last_name' =>
> string(7) "Schultz"
> 'first_name' =>
> string(6) "Rasmus"
> 'friend' =>
> array(6) {
> '@type' =>
> string(1) "d"
> '@rid' =>
> string(5) "#10:1"
> '@version' =>
> int(1)
> '@class' =>
> string(6) "Person"
> 'last_name' =>
> string(10) "Thinggaard"
> 'first_name' =>
> string(2) "Bo"
> }
> }
> }
> }
>
> Although this record is linked (not embedded), it appears embedded in the
> result.
>
> What I was expecting, was something more along the lines of this:
>
> array(1) {
> 'result' =>
> array(1) {
> [0] =>
> array(7) {
> '@type' =>
> string(1) "d"
> '@rid' =>
> string(5) "#10:0"
> '@version' =>
> int(2)
> '@class' =>
> string(6) "Person"
> 'last_name' =>
> string(7) "Schultz"
> 'first_name' =>
> string(6) "Rasmus"
> 'friend' =>
> string(5) "#10:1"
> }
> [1] =>
> array(6) {
> '@type' =>
> string(1) "d"
> '@rid' =>
> string(5) "#10:1"
> '@version' =>
> int(1)
> '@class' =>
> string(6) "Person"
> 'last_name' =>
> string(10) "Thinggaard"
> 'first_name' =>
> string(2) "Bo"
> }
> }
> }
>
> The fact that a related record appears as embedded in a parent record,
> rather than as a reference, is what surprises me.
>
> Suppose multiple Person documents have the same friend reference - you
> would get multiple copies of the same record in the response then?
>
> Isn't that a form of denormalization?
>
> And what about circular references? If you use the default fetch strategy,
> can you send the server into a circular tail spin?
>
> I would expect embedded documents to appear as embedded in their parent
> document, because they're value objects, not entities, right?
>
> But links? These are references to other entities. Only the reference
> itself (the key) is actually part of the parent aggregate - the entity
> itself is not. Why should it appear inside the entity as though it were an
> embedded value object?
>
>
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