On 9 July 2014 02:26, Andrey Kovalev <[email protected]> wrote:
> Thanks!
> Could you clarify a related question?
> Are these statements true?
>
> 1. By default lightweight edges are used
>
> Yes, but you can disable it (
https://github.com/orientechnologies/orientdb/wiki/Graph-Database-Tinkerpop
)
>
> 1.
> 2. In that case out([<label-1>][,<label-n>]*) function doesn't work
> like this
> *select * from Cat where out('Eats').name = 'Jerry' *but *select * from
> Cat where out_Eats.name = 'Jerry' *works if I want to query all cats
> who eat a mouse with name Jerry.
>
> Functions have been created to avoid worrying about the underlying
implementation, so they should work with lightweight or classic edges. Can
you open a new issue in case?
Lvc@
>
> On Wednesday, 9 July 2014 01:03:54 UTC+1, Lvc@ wrote:
>
>> Hi Andrey,
>> It was a typo, just fixed. The labels are relative to the Edges.
>>
>> Lvc@
>>
>>
>> On 8 July 2014 21:35, Andrey Kovalev <[email protected]> wrote:
>>
>>> Documentation here
>>> <https://github.com/orientechnologies/orientdb/wiki/SQL-Functions#in>says
>>> that in([<label-1>][,<label-n>]*)
>>>
>>>> Gets the adjacent incoming vertices starting from the current record as
>>>> Vertex.
>>>
>>>
>>> Then below you put an example
>>>
>>>> Get all the incoming vertices of type Car ad Moto from all the Vehicle
>>>> vertices:
>>>> SELECT in('Car','Moto') from Vehicle
>>>
>>> From this example it seems that we query incoming vertices of type Car
>>> and Moto.
>>>
>>> I tried to run a similar query in a database console and it seems that
>>> 'Car' and 'Moto' must be an Edge type not a Vertex type. Am I right?
>>> If not could you explain why I may get the following exception:
>>>
>>>> Type error. The class User does not extend class 'E' and therefore
>>>> cannot be considered an Edge
>>>>
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