openrewrite / openrewrite/rewrite-apache

use Apache Collections to check if a collection is empty/not empty

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recipe
Dominant language
Java
Stars
6
Forks
19
Avg merge
56m
Merged PRs (30d)
3

Description

Follow up recipe for org.openrewrite.java.cleanup.IsEmptyCallOnCollections

https://commons.apache.org/proper/commons-collections/apidocs/org/apache/commons/collections4/CollectionUtils.html#isEmpty-java.util.Collection-

https://commons.apache.org/proper/commons-collections/apidocs/org/apache/commons/collections4/CollectionUtils.html#isEmpty-java.util.Collection-

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the referenced org.openrewrite.java.cleanup.IsEmptyCallOnCollections recipe and review the Apache Commons Collections CollectionUtils.isEmpty API documentation. Determine the intended empty and non-empty collection cases, then verify that the follow-up recipe handles them consistently with the existing recipe.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
tooling
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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