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https://issues.apache.org/jira/browse/TINKERPOP3-675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt Frantz closed TINKERPOP3-675.
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Resolution: Won't Fix
With the {{Scope}} inference logic, it no longer makes sense to apply
{{select}} to the properties of an {{Element}}.
> select(local) applied to Element
> --------------------------------
>
> Key: TINKERPOP3-675
> URL: https://issues.apache.org/jira/browse/TINKERPOP3-675
> Project: TinkerPop 3
> Issue Type: Improvement
> Components: process
> Affects Versions: 3.0.0-incubating
> Reporter: Matt Frantz
>
> {{select(local)}} currently works on {{Map}}, but it could be interpreted as
> a property value selector on {{Element}}. Sounds like [~okram] considered
> making {{Element}} a {{Map}} implementation at one point, so it must not be a
> terrible idea. This would give it approximately the semantics of
> {{valueMap}} with a few exceptions because of {{select}}'s "collections only
> when necessary" philosophy.
> Scenario: Single property name with single cardinality emits single value.
> {noformat}
> gremlin> g = TinkerFactory.createModern().traversal()
> gremlin> g.V().has('name', 'josh').select(local, 'age')
> ==>32
> {noformat}
> Scenario: Single property name with multi cardinality emits value as
> collection.
> {noformat}
> gremlin> g = TinkerFactory.createTheCrew().traversal()
> gremlin> g.V().has('name', 'marko').select(local, 'location')
> ==>[san diego, santa cruz, brussels, santa fe]
> {noformat}
> Scenario: Multiple property names with single cardinality emits Map of single
> values.
> {noformat}
> gremlin> g = TinkerFactory.createModern().traversal()
> gremlin> g.V().has('age', gte(30)).select(local, 'name', 'age')
> ==>[name:josh, age:32]
> ==>[name:peter, age:35]
> {noformat}
> Scenario: Multiple property names with mixed cardinality emits Map of mixed
> single and collection values.
> {noformat}
> gremlin> g = TinkerFactory.createTheCrew().traversal()
> gremlin> g.V().has('location', gte('d')).select(local, 'name', 'location')
> ==>[name:marko, location:[san diego, santa cruz, brussels, santa fe]]
> ==>[name:stephen, location:[centreville, dulles, purcellville]]
> ==>[name:matthias, location:[bremen, baltimore, oakland, seattle]]
> ==>[name:daniel, location:[spremberg, kaiserslautern, aachen]]
> {noformat}
> Scenario: No property names emits a Map with all property values with mixed
> single and collection values.
> {noformat}
> gremlin> g = TinkerFactory.createTheCrew().traversal()
> gremlin> g.V().has('location', gte('d')).select(local)
> ==>[name:marko, location:[san diego, santa cruz, brussels, santa fe]]
> ==>[name:stephen, location:[centreville, dulles, purcellville]]
> ==>[name:matthias, location:[bremen, baltimore, oakland, seattle]]
> ==>[name:daniel, location:[spremberg, kaiserslautern, aachen]]
> {noformat}
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