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https://issues.apache.org/jira/browse/TINKERPOP-2987?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17838183#comment-17838183
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Florian Hockmann commented on TINKERPOP-2987:
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Sorry for the late reply, I somehow didn't see this issue until now.
Did you try to use {{DateTimeOffset}} in .NET for this property key?
Gremlin.Net should serialize {{DateTimeOffset}} so it can be used by the server
(JanusGraph Server in your case) as a Java {{Date}} and deserialize a {{Date}}
coming from the server as a {{DateTimeOffset}} in .Net.
For the Console: I think the usual behavior is that you need to use a {{Date}}
object or the {{datetime()}} function which is just a convenience function to
make working with dates easier. I guess it worked with just a {{string}} when
you created the vertex as JanusGraph automatically converted it to a {{Date}}
as it inferred the type from your schema.
> "Has (Traversal Step)" and datetime() function
> ----------------------------------------------
>
> Key: TINKERPOP-2987
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2987
> Project: TinkerPop
> Issue Type: Bug
> Components: console, dotnet
> Affects Versions: 3.5.5
> Environment: Windows 10
> TinkerPop 3.5.5
> JanusGraph 0.6.3
> Berkeley JE
> Reporter: Kensuke Ishihara
> Priority: Major
> Labels: bug
> Original Estimate: 0h
> Remaining Estimate: 0h
>
> I created a vertex which has a date property. (I defined a schema and enabled
> schema constraints according to [Schema and Data Modeling -
> JanusGraph|https://docs.janusgraph.org/schema/].)
>
> When I wrote a query on Gremlin Console like below, it works. I mean, it is
> not necessary to use datetime() function.
> g.V().has("labelName", "propertyName", "2018-04-01T00:00:00").valueMap()
>
> But, if I accessed same vertex via another vertex, then I need datetime()
> function.
> g.V().has("anotherLabelName", "anotherPropertyName",
> "someValue").out().has("labelName", "propertyName",
> datetime("2018-04-01T00:00:00")).valueMap()
> If I didn't use datetime(), no vertex is returned.
>
> Same problem occurs on Gremlin.Net. In .Net, -.ToUniversalTime() method is
> needed at latter case- I have not found a workaround.
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