How to filter edge by source vertex's property?

[Qiu Xiafei]

Hi, all!

I encounter a problem filtering edge by source vertex's property. Here we have the where step, the gremlin query is like:

g.V().as('a').outE().as('b').where('b', eq('a')).by('time');

But further, I want to filter the edge (labeled as 'b') within a range of source vertex(labeled as 'a')'s time property, say, a.time - 100 < b.time a.time + 100.

I don't know how to express such predication in the where step, do you have any ideas?

[Daniel Kuppitz]

Subtract b's time from a's time and check whether the result is > -100 && < 100.

g.V().sack(assign).by('time').

  outE().sack(minus).by('time').

  filter(sack().is(gt(-100).and(lt(100))))

Cheers,

Daniel

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[Qiu Xiafei]

Thanks,that's great!

在 2017年6月27日星期二 UTC+8下午7:20:18，Daniel Kuppitz写道：

Subtract b's time from a's time and check whether the result is > -100 && < 100.

g.V().sack(assign).by('time').

  outE().sack(minus).by('time').

  filter(sack().is(gt(-100).and(lt(100))))

Cheers,

Daniel

On Tue, Jun 27, 2017 at 4:31 AM, Qiu Xiafei <qiux...@gmail.com> wrote:

Hi, all!

I encounter a problem filtering edge by source vertex's property. Here we have the where step, the gremlin query is like:

g.V().as('a').outE().as('b').where('b', eq('a')).by('time');

But further, I want to filter the edge (labeled as 'b') within a range of source vertex(labeled as 'a')'s time property, say, a.time - 100 < b.time a.time + 100.

I don't know how to express such predication in the where step, do you have any ideas?

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