Matt Frantz created TINKERPOP3-793:
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Summary: select should stop traversal on unproductive by
Key: TINKERPOP3-793
URL: https://issues.apache.org/jira/browse/TINKERPOP3-793
Project: TinkerPop 3
Issue Type: Improvement
Components: process
Affects Versions: 3.0.0-incubating
Reporter: Matt Frantz
Assignee: Marko A. Rodriguez
Instead of throwing an exception, we should stop traversal if a {{by}} clause
fails to produce.
Current:
{noformat}
gremlin> g.V().as('a').out().out().as('b')
.select('a', 'b')
.by('name')
.by(has('name', 'lop').values('name'))
The provided start does not map to a value: v[5]->[HasStep([name.eq(lop)])]
{noformat}
Desired:
{noformat}
gremlin> g.V().as('a').out().out().as('b')
.select('a', 'b')
.by('name')
.by(has('name', 'lop').values('name'))
==>[a:marko, b:lop]
{noformat}
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