[TINKERPOP-2515] Add clone method to GraphTraversal interface

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 3.4.9
• Component/s: process
• Assignee: Unassigned
• Reporter: Christopher Smith
• Created: 31/Jan/21 00:26
• Updated: 01/Feb/21 11:30
• Resolved: 01/Feb/21 11:30

Description

The canonical recommendation for reusing traversal parts (e.g., I have a method that takes a GraphTraversal as a parameter, and I need to apply .id() to it) is to call clone() on the traversal. However, the interface GraphTraversal does not actually provide a clone() method, and Object#clone() is protected. The universal actual implementations DefaultTraversal and DefaultGraphTraversal explicitly expose clone(), but they're hidden behind the interfaces.

To provide Java/STC compatibility, GraphTraversal (and possibly Traversal) should expose the clone() methods.