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https://issues.apache.org/jira/browse/TINKERPOP-479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16062023#comment-16062023
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Robert Dale commented on TINKERPOP-479:
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Or using ensure()
{{g.addV("person").property("name","jon").ensure('a').property('age',3).choose(cap('a'),property('createdTime',
new Date()))}} ...
> Consider Providing "getOrCreate" Functionality
> ----------------------------------------------
>
> Key: TINKERPOP-479
> URL: https://issues.apache.org/jira/browse/TINKERPOP-479
> Project: TinkerPop
> Issue Type: Improvement
> Components: structure
> Affects Versions: 3.0.2-incubating
> Reporter: stephen mallette
>
> One of the most commonly written functions used is good ol' "getOrCreate"
> where you want to get a {{Vertex}} if it exists or create it with supplied
> properties if it does not. We currently have a "helper" function for this on
> {{ElementHelper}}
> https://github.com/tinkerpop/tinkerpop3/blob/6d0f00865f673cb0739f6f310e1868425f732924/gremlin-core/src/main/java/com/tinkerpop/gremlin/structure/util/ElementHelper.java#L62
> but perhaps it is time to treat this issue as a first class citizen as part
> of the Graph API. I think that some vendors might actually be able to
> optimize this function as well.
> Another aspect of "getOrCreate" is "upsert" as well as options to ensure
> uniqueness. All of these things we've at some point or another built
> variations of outside of TinkerPop for applications, data loading, etc.
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