[jira] [Updated] (ATLAS-4750) [Relationship Search] Relationship search isNull/notNull case doesn't consider null strings

["Abhishek Pal (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ATLAS-4750?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Abhishek Pal updated ATLAS-4750:
--------------------------------
    Summary: [Relationship Search] Relationship search isNull/notNull case doesn't consider null strings  (was: [Relationship Search] Relationship search isNull case doesn't consider null strings)

> [Relationship Search] Relationship search isNull/notNull case doesn't consider null strings
> -------------------------------------------------------------------------------------------
>
>                 Key: ATLAS-4750
>                 URL: https://issues.apache.org/jira/browse/ATLAS-4750
>             Project: Atlas
>          Issue Type: Bug
>          Components:  atlas-core
>            Reporter: Abhishek Pal
>            Priority: Major
>
> Currently Atlas supports relationship search where we can search entities by their relationships.
> We can use various filters to search for the relationship, where one such filter is a condition of "isNull".
> If there are relationships where a string type attribute is set to *""* (null string), it considers this as non-null.
> For example if there is are two relationships with attributes:
>  * relation_X
>  ** "type_str": ""
>  * relation_Y
>  ** "type_str": null
> and we search by condition:
> {code:java}
> {
>     "attributeName": "type_str",
>     "operator": "isNull",
>     "attributeValue": ""
> }
> {code}
> we get only *relation_Y*
> Whereas since *relation_X* has
> {panel}
> "type_str":""
> {panel}
> it is not treated as a null value and hence not returned.
> This is also the case for {panel} "operator": "notNull" {panel} where we get the *relation_X*
> Ideally this should also be considered a null type



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