[jira] [Created] (ATLAS-1859) Add validation checking around relationshipDefs

["David Radley (JIRA)" <ji...@apache.org>]

David Radley created ATLAS-1859:
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             Summary: Add validation checking around relationshipDefs
                 Key: ATLAS-1859
                 URL: https://issues.apache.org/jira/browse/ATLAS-1859
             Project: Atlas
          Issue Type: Sub-task
            Reporter: David Radley
            Assignee: Sarath Subramanian


When a relationshipDef creation request is attempted, Atlas needs to check:
- does the endpoint name in the relationship already exist in another active  relationshipdef that applies to that type
-  does the endpoint name in the relationship already exist in another attributedef that applies to that type

The above needs to account for any attributeDefs and relationshipdefs that apply due to type inheritance. 

There is also the case that for supplied models like Hive, there may need to be some mechanism to allow the old forms of composition relationships - that Gremlin queries might relay on. The old forms of relationship instances are implemented by 2 edges - the new form is one edge.  

 



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