[jira] [Resolved] (SOLR-16713) Replace Guava usages with pure Java

["Kevin Risden (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-16713?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kevin Risden resolved SOLR-16713.
---------------------------------
    Resolution: Fixed

> Replace Guava usages with pure Java 
> ------------------------------------
>
>                 Key: SOLR-16713
>                 URL: https://issues.apache.org/jira/browse/SOLR-16713
>             Project: Solr
>          Issue Type: Task
>            Reporter: Kevin Risden
>            Assignee: Kevin Risden
>            Priority: Minor
>             Fix For: main (10.0), 9.3
>
>          Time Spent: 5h 10m
>  Remaining Estimate: 0h
>
> Guava is used in a variety of places that can be simplified especially with Java streams.
> * Preconditions -> Objects
> * Strings.isNullOrEmpty -> Simple helper method on StrUtils
> * Maps/ImmutableMap -> Java Map
> * Lists/ImmutableList -> Java List
> * Sets/ImmutableSet/ImmutableSortedSet -> Java Set
> * Collections2/Iterables/Iterators/ObjectArrays -> Java Stream
> * Guava cache -> Caffeine cache
> This ends up removing the Guava dependency from 4 build.gradle files:
> * modules/analytics
> * modules/sql
> * modules/gcs-repository - test
> * solrj - test
> ----
> Second pass cleans up
> * com.google.common.base.Throwables
> * com.google.common.collect.ImmutableMap
> * com.google.common.collect.**
> * com.google.common.io.** (and consequently org.apache.commons.io.IOUtils#toString(java.io.Reader) since its the same usage)
> This ends up removing Guava dependency from 
> * test-framework
> * solrj-zookeeper - test



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