[TINKERPOP-2520] Add the ability to reverse the stream or a collection

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 3.4.10
• Component/s: process
• Labels: breaking
• Assignee: Unassigned
• Reporter: Kelvin R. Lawrence
• Created: 04/Feb/21 20:20
• Updated: 27/Sep/23 21:00

Description

I had a Gremlin user ask me yesterday if there was a way to have the results of a `path` step be reversed. Today you cannot do that using `from` and `to` steps as the `from` label must appear before the `to` label in a path. In thinking about this, perhaps adding a `reverse` option to order (on top of `asc`,`desc` and `shuffle`) would be a nice addition to Gremlin. So you could write something like:

g.V().out().out().path().order(local).by(reverse)

For this specific user they were union-ing a set of paths in different directions and wanted to normalize them to all be in the same direction when presented as results.

Issue Links

• Blocked: TINKERPOP-2519 Add ability to order by reverse
• is related to: TINKERPOP-2978 Add List Manipulation Steps to Gremlin