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https://issues.apache.org/jira/browse/TINKERPOP3-691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14716902#comment-14716902
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Marko A. Rodriguez commented on TINKERPOP3-691:
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[~mbroecheler] Where are we with this?
> TP3 is too prescriptive in exception
> ------------------------------------
>
> Key: TINKERPOP3-691
> URL: https://issues.apache.org/jira/browse/TINKERPOP3-691
> Project: TinkerPop 3
> Issue Type: Improvement
> Components: test-suite
> Affects Versions: 3.0.0-incubating
> Reporter: Matthias Broecheler
> Priority: Minor
>
> In its current state, TP3 is extremely prescriptive about the exact type of
> exception that should be thrown in certain situations. Sometimes these
> exceptions are symptoms of the same behavior (i.e. accessing properties you
> shouldn't) but are different based on the access path (i.e. there are
> separate exceptions for MapReduce and VertexProgram when such access happens).
> This makes it cumbersome for vendors to implement TP3 because you have to
> know in core datastructures where they are being used even though the
> datastructure can be reused between components.
> An example of that is PreloadedVertex in Titan where we have to store in what
> context such a vertex is used.
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