[jira] [Assigned] (OAK-9801) Many SessionImpl operations just log a NPE if null values provided

["Angela Schreiber (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OAK-9801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Angela Schreiber reassigned OAK-9801:
-------------------------------------

    Assignee: Joerg Hoh

> Many SessionImpl operations just log a NPE if null values provided
> ------------------------------------------------------------------
>
>                 Key: OAK-9801
>                 URL: https://issues.apache.org/jira/browse/OAK-9801
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: jcr
>            Reporter: Joerg Hoh
>            Assignee: Joerg Hoh
>            Priority: Major
>             Fix For: 1.42.0
>
>
> Many operations of {{SessionImpl}} require non-null parameters and ensure this by using the {{checkNotNull}} method of Google Commons.
> If actually provided a null value, it can look like this:
> {noformat}
> org.apache.sling.engine.impl.SlingRequestProcessorImpl service: Uncaught Throwable
> java.lang.NullPointerException: null
>     at org.apache.jackrabbit.oak.jcr.session.SessionImpl.getNamespaceURI(SessionImpl.java:788) [org.apache.jackrabbit.oak-jcr:1.42.0]
> {noformat}
> This NPE because of the failed validation is non-distinguishable from a "regular" NPE. We should use the version of {{checkNotNull}} which allows to provide an error string to indicate that the parameter validation failed.



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