Selective traverse

[Shishya]

Hi,

I have this need to traverse selectively, by avoiding a certain paths at same level. 

My vertex-edge structure is like this. And starting from myclass1, I need to traverse e1,e2,e3,e5 but not e4 and e5.

It is very tricky but is very interesting use case.

 myclass1---v----e2--->myclass2-e3--------v

   |  |   |

   |   e1   |

   e5  v   v

   | myclass3----e4------->myclass4

   |

   V

myclass5---e6--->myclass6

Thanks

[Luca Garulli]

Hi,

what's e4 and e5? Edge class/label name? An attribute on edge or vertex?

Lvc@

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[prabhat]

My bad. 

e1 to e6 are edges. 

myclass1 to myclass6 are vertex. To traverse to level 2, I want to avoid e4 and e6.

Regards

Prabhat Kumar Singh

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[Luca Garulli]

Ok,

so how do you refer to e1? by RID, by a property?

Lvc@

[prabhat]

I define myclassx as "create class myclassx extends V" and ex as "create class ex extends E"

Regards

[prabhat]

I didnt get your question initially, I believe.

To traverse from specific vertex, I use

traverse out() from myclassx<rid> while $depth < 3

But I need to somehow give option like

traverse out('e1','e2','e3,'e5') <But Not> out('e4','e6') from myclassx<rid> while $depth < 3

Regards

Prabhat Kumar Singh

[Luca Garulli]

Hi,

my question is: does e4 is the class name for edge? Or it's a way you use to represent a rid of class ex?

Lvc@

[prabhat]

Yes. e4 is class name for the edge.

Prabhat Kumar Singh

[prabhat]

Hi,

Any ideas if its possible with select/Traverse?

Regards

​

[Luca Garulli]

Hi,

clear. So the query is like you wrote:

traverse out('e1','e2','e3,'e5') from <rid> while $depth < 3

If you have default settings, namely:

alter database custom useClassForEdgeLabel=true

Lvc@

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[Shishya]

Hi Luca,

Thanks a lot for the pointers. 

But my need is a little complex. I have to traverse all edges, except e1 via e5. I read somewhere that a xpath like/dot operator is possible. But dont find any documentations.

 myclass1--e1-v----e2--->myclass2-e3---v

   |  |   |

   |  |   |

   e5  v   v

   | myclass3----e4------->myclass4

   |

   V

  myclass1---e1--->myclass5

[cp2]

This is not an answer, but just an upvote for the question. I am wondering this, too.