2.1-rc3: $depth = count(Edge)+count(Vertex) ????

[zhuobao]

on OpenBeer dataset:
query 0: select count(*) as total from (traverse * from #14:22 while $depth <=2)
total=16

query 1: select * from (traverse * from #14:22 while $depth <=2) where $depth=0
----+------+-------+----+----+-----

|@Rid |@Class |id |code|state

----+------+-------+----+----+-----
0 |#14:22|Brewery|23 |4103|Maine
----+------+-------+----+----+-----

query 2: select * from (traverse * from #14:22 while $depth <=2) where $depth=1
----+---------+----------+--------+------

|@Rid |@Class |out |in

----+---------+----------+--------+------
0 |#17:888 |HasBrewery|#15:1437|#14:22
1 |#17:2552 |HasBrewery|#15:1437|#14:22
2 |#17:4216 |HasBrewery|#15:1437|#14:22
3 |#17:5880 |HasBrewery|#15:1437|#14:22
4 |#17:7544 |HasBrewery|#15:1437|#14:22
5 |#17:9208 |HasBrewery|#15:1437|#14:22
6 |#17:10872|HasBrewery|#15:1437|#14:22
7 |#17:12912|HasBrewery|#15:4269|#14:22
8 |#17:14276|HasBrewery|#15:5765|#14:22
9 |#17:15204|HasBrewery|#15:1437|#14:22
10 |#17:17244|HasBrewery|#15:4269|#14:22
11 |#17:18608|HasBrewery|#15:5765|#14:22
----+---------+----------+--------+------

query 3: select * from (traverse * from #14:22 while $depth <=2) where $depth=2
----+--------+------+----+----+

|@Rid |@Class|id |abv |

----+--------+------+----+----+
0 |#15:1437|Beer |1438|0 |
1 |#15:4269|Beer |4282|5 |
2 |#15:5765|Beer |5840|8.3 |
----+--------+------+----+----+

from the query, seems the $depth are defined by count(E)+count(V). It does not fit with my personal common sense. Could you please clarify this?

[luigidellaquila]

Hi,

traverse * means traversing all the fields (document model), if you use
regular edges (that is the default) traversing from a vertex to another
means traversing two fields ("out_Class" on the vertex and "in" on the
edge).
To do a correct traversal on Graph API you have to use both() instead of *:

select * from (traverse both() from #14:22 while $depth <=2) where $depth=1

2015-06-12 14:16 GMT+02:00 Luca Garulli notifications@github.com:

Assigned #4308 #4308
to @luigidellaquila https://github.com/luigidellaquila.

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