Marko A. Rodriguez created TINKERPOP3-819:
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Summary: Mapping Cardinality Interface
Key: TINKERPOP3-819
URL: https://issues.apache.org/jira/browse/TINKERPOP3-819
Project: TinkerPop 3
Issue Type: Improvement
Components: process
Reporter: Marko A. Rodriguez
Assignee: Marko A. Rodriguez
Priority: Minor
I think it would be handy (for some {{sack()}} work I'm doing on
merging/splitting sacks), but also in general as I've wanted this before (can't
remember why). I think we should add the following interfaces.
{code}
ManyToOneMapping (e.g. reducing barriers)
OneToManyMapping (e.g. flatmap)
OneToOneMapping (e.g. map, sideeffects)
OneToOneOrNoneMapping (e.g. filter)
{code}
We can just rely on {{instanceof FlatMapStep}} or {{instanceof MapStep}} as
there are steps that are "map steps" but don't extend {{MapStep}}, but instead
{{AbstractStep}}. Either we make it so that all steps MUST extend from
{{FlatMapStep}}, {{MapStep}}, etc. or we can add the above interfaces.
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