How to save traverse result in a variable and reuse them in the next traversal?

Eric Cyliu

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Aug 25, 2016, 5:59:15 AM8/25/16

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Hi,

I wonder how to save traversal result in a variable and start another traverse with that variable. I have tried following codes. It seems the variable is empty.

gremlin> previous = g.V().has('name', 'b').outE()

==>e[13][2-next->8]

gremlin> previous.inE()

The traversal strategies are complete and the traversal can no longer be modulated

Display stack trace? [yN]

Thanks.

Daniel Kuppitz

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Aug 25, 2016, 6:43:45 AM8/25/16

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The console will automatically iterate your traversals. To work around this behavior you can do this:

gremlin> t = g.V().has("name", "lop"); []
gremlin> t.inE()
==>e[9][1-created->3]
==>e[11][4-created->3]
==>e[12][6-created->3]
gremlin>

Cheers,

Daniel

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Eric Cyliu

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Aug 25, 2016, 7:45:33 AM8/25/16

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Thanks Daniel again.

Why do semicolon and square brackets help ?

On Thursday, August 25, 2016 at 1:43:45 PM UTC+3, Daniel Kuppitz wrote:

The console will automatically iterate your traversals. To work around this behavior you can do this:

gremlin> t = g.V().has("name", "lop"); []
gremlin> t.inE()
==>e[9][1-created->3]
==>e[11][4-created->3]
==>e[12][6-created->3]
gremlin>

Cheers,
Daniel

On Thu, Aug 25, 2016 at 11:59 AM, Eric Cyliu <farsca...@live.com> wrote:

Hi,

I wonder how to save traversal result in a variable and start another traverse with that variable. I have tried following codes. It seems the variable is empty.

gremlin> previous = g.V().has('name', 'b').outE()
==>e[13][2-next->8]
gremlin> previous.inE()
The traversal strategies are complete and the traversal can no longer be modulated
Display stack trace? [yN]

Thanks.

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Eric Cyliu

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Aug 25, 2016, 7:54:17 AM8/25/16

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I also realized that t can be used only once. Why is that ? Is it possible to use many times?

On Thursday, August 25, 2016 at 1:43:45 PM UTC+3, Daniel Kuppitz wrote:

The console will automatically iterate your traversals. To work around this behavior you can do this:

gremlin> t = g.V().has("name", "lop"); []
gremlin> t.inE()
==>e[9][1-created->3]
==>e[11][4-created->3]
==>e[12][6-created->3]
gremlin>

Cheers,
Daniel

On Thu, Aug 25, 2016 at 11:59 AM, Eric Cyliu <farsca...@live.com> wrote:

Hi,

I wonder how to save traversal result in a variable and start another traverse with that variable. I have tried following codes. It seems the variable is empty.

gremlin> previous = g.V().has('name', 'b').outE()
==>e[13][2-next->8]
gremlin> previous.inE()
The traversal strategies are complete and the traversal can no longer be modulated
Display stack trace? [yN]

Thanks.

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Daniel Kuppitz

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Aug 25, 2016, 10:56:01 AM8/25/16

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Because it makes [] the last statement of the line and only the last statement will be evaluated / iterated.

Cheers,

Daniel

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Daniel Kuppitz

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Aug 25, 2016, 10:56:45 AM8/25/16

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If you want to use it multiple times, .clone() it.

Cheers,

Daniel

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