openrewrite / openrewrite/rewrite-static-analysis

`Maps` with keys that are `enum` values should be replaced with `EnumMap`.`RSPEC-1640`

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recipe
Dominant language
Java
Stars
62
Forks
112
Avg merge
1d 19h
Merged PRs (30d)
40

Description

https://rules.sonarsource.com/java/RSPEC-1640

This is similar to https://github.com/openrewrite/rewrite-migrate-java/blob/main/src/main/java/org/openrewrite/java/migrate/util/UseEnumSetOf.java

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 by reading the linked RSPEC-1640 rule and the analogous UseEnumSetOf.java recipe. Then inspect the repository's existing Java static-analysis recipes and their test structure. Done means a recipe identifies Maps whose keys are enum values and replaces them with EnumMap, with coverage matching the repository's conventions.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
devtools, 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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