[Developers] mediated properties

[Nick Thompson]

in general, i don't think your question has a well-defined answer -
there's no reason for the system to believe that
/business/employment_tenure/company is more relevant than
/business/employment_tenure/title, for example.  you could be looking
for a list of people at a particular company, in which case the job
title would more interesting.

so, you might rule out /business/employment_tenure/person from context
as chris described, but that doesn't determine a unique "other side".
that's the nature of compound value types - if a relationship only
had two sides, it would probably be modeled as a single link instead
of being mediated by a compound value object.

     nick

Steve Sak wrote:
> So, if I'm looking at /people/person/employment_history how would I
> determine that the relevant property is 
> /business/employment_tenure/company? 
> 
> 
> 
> Alec Flett wrote:
>> I want to add that checking by is only valid if you know you're coming
>> in and out on the same property (as is the case with marriage) - if
>> the properties are different, you need to look at master/reverse
>> properties because you can imagine a director who also produced a
>> movie - if you were just going by ids, looking at the relationship of
>>
>> "Who is the /director/ of this movie /produced by/ Martin Scorsese?" -
>> you might get Martin Scorsese back, but that doesn't mean that
>> "director" is the reverse of "produced by".
>>
>> Alec
>>
>> Christopher R. Maden wrote:
>>> Steve Sak wrote:
>>>   
>>>> To restate the question: given a mediator object how do I determine
>>>> which property is the one it's mediating?  For example, type A has a
>>>> mediator M that has a bunch of properties mediates between A and another
>>>> object.  How do I determine which property of M is the one that points
>>>> to the other object being mediated?
>>>>     
>>> Mediators, or compound value types, are not especially different from 
>>> any other type; the UI treats them a little differently, but that’s it.
>>>
>>> But I think you are asking about instances rather than types, correct? 
>>> In other words, Arnold Schwarzenegger connects to a marriage, and that 
>>> marriage connects to two people, both Arnold Schwarzenegger and Maria 
>>> Shriver.  How can you tell which of the spouses is the one you started from?
>>>
>>> The only way to do that, really, is by looking at the IDs.
>>>
>>> {
>>>    "query": {
>>>      "id": null,
>>>      "name": "Arnold Schwarzenegger",
>>>      "spouse_s": [
>>>        {
>>>          "spouse": [
>>>            {
>>>              "id":null,
>>>              "name":null
>>>            }
>>>          ],
>>>          "type":"/people/marriage"
>>>        }
>>>      ],
>>>      "type":"/people/person"
>>>    }
>>> }
>>>
>>> {
>>>    "result": {
>>>      "spouse_s": [
>>>        {
>>>          "spouse": [
>>>            {
>>>              "id": "#9202a8c04000641f80000000001da07e",
>>>              "name": "Maria Shriver"
>>>            },
>>>            {
>>>              "id": "#9202a8c04000641f8000000000006567",
>>>              "name": "Arnold Schwarzenegger"
>>>            }
>>>          ],
>>>          "type": "/people/marriage"
>>>        }
>>>      ],
>>>      "type": "/people/person",
>>>      "id": "#9202a8c04000641f8000000000006567",
>>>      "name": "Arnold Schwarzenegger"
>>>    }
>>> }
>>>
>>> You can see that one of the spouses in the marriage has the same ID as 
>>> the person with whom you started, and that the other is different.
>>>
>>> Unfortunately, there’s not really an automatic way to say “get all of 
>>> the values of these properties except the ones that point back to the 
>>> parent within the scope of this query.”
>>>
>>> HTH,
>>> Chris
>>>   
>