Stephen Mallette created TINKERPOP-2912:
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Summary: Improve error message for addE() when traverser is
incorrect
Key: TINKERPOP-2912
URL: https://issues.apache.org/jira/browse/TINKERPOP-2912
Project: TinkerPop
Issue Type: Improvement
Components: process
Affects Versions: 3.5.5
Reporter: Stephen Mallette
For this:
{code}
gremlin> g.addV('A').as('a').addE('self').addE('self2').to('a')
addE(self2) could not find a Vertex for from() - encountered: TinkerEdge
Type ':help' or ':h' for help.
Display stack trace? [yN]n
{code}
The traverser for the second {{addE('self2')}} is not a {{Vertex}}` - it is the
previously added {{Edge}} of {{addE('self')}}. Since `from()` is not provided
for the second {{addE('self2')}} it uses the current traverser and we get the
exception shown. The exception is a bit confusing for those who don't realize
what it means. Change the exception to: "addE(self2) could not find a Vertex
specified for from() - a TinkerEdge was specified instead" - or perhaps a
better message?
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