Hacktoberfest 2026: the issues maintainers tagged for October, open and beginner-friendly. Browse Hacktoberfest issues

Quick-Fix: Add element-mapping method in case of error on iterable mapping

Open
#33 0 comments 4 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
45/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
java
Domain
tooling

Research direction

The issue names no files or tests. Start by locating the Eclipse quick-fix entry point for the reported iterable-mapping error, then trace how source and target element types are exposed. Done means offering a quick-fix that adds the requested Target-toTarget(Source) mapping method for this case.

Written by the indexing model from the issue text.

Description

feature

List<Target> toTargetList(List<Source> sources)

Error message: No implementation can be generated for this method. Found no method nor implicit conversion for mapping source element type into target element type.

Quick-Fix to add method:
Target toTarget(Source source)

Dominant language
Java
Stars
12
Forks
10
No merged PRs in 30d

Contributor guide

No contributing guide indexed for this repository

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.

More from mapstruct/mapstruct-eclipse

All issues in mapstruct/mapstruct-eclipse

Similar issues

More Java issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.