[TINKERPOP-1455] Provide String-based withStrategy()/withoutStrategy() for language variant usage

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.2
• Fix Version/s: 3.2.3
• Component/s: process
• Assignee: Marko A. Rodriguez
• Reporter: Marko A. Rodriguez
• Created: 19/Sep/16 18:34
• Updated: 13/Sep/17 11:58
• Resolved: 13/Sep/17 11:58

Description

Right now withStrategies() is not supported by Gremlin-Python. Why? Because strategies are created via Java and thus you can't do stuff like:

g.withStrategies(SubgraphStrategy.build()...create())

Now, we have strategies that we have made "native" to GraphTraversalSource by way of withXXX. For example: withSideEffect(), withSack(), withRemote(), withPath(), etc.

In order to generally support any strategy created by a user for use from a language variant, we should support lambda based strategies. E.g.:

g.withStrategies(lambda : "SubgraphStrategy.build()...create()")

Like any other lambda, it is executed server side using the respective ScriptEngine.

Next, withoutStrategies() should support String... so you can do:

g.withoutStrategies("com.stuff.MyStrategy", "com.stuff.MyOtherStrategy")

..instead of having to pass in the Class object.

Issue Links

• links to: GitHub Pull Request #447