Oliver Erhart
Senior Software Engineer at Compass Datenbank GmbH
Vienna, Austria
Summary
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RockstarOliver Erhart is a Senior Software Engineer based in Vienna with 11 years of experience building robust backend systems and developer tooling. He currently develops at Compass Datenbank GmbH and is an active member of the MapStruct open-source project, where he has made substantive contributions to the annotation processor that generates type-safe bean mappers. His work on lifecycle method support, builder and record constructor integrations, and source property access shows a deep competence in compiler/annotation-processing internals and API design. Colleagues value him for tackling subtle correctness and build-time concerns—evidenced by improvements across core processor components and test suites. Oliver combines pragmatic engineering with a focus on developer ergonomics, improving both functionality and code quality in widely used Java tooling.
11 years of coding experience
Stackoverflow
532reputation
78kreached
24answers
6questions
Github Skills (20)
object-mapping10
dns-record10
annotations10
srecord10
java10
annotation-processing10
javas10
data-mapping10
recordtype10
activerecord10
testing9
mapstruct6
swing6
netbeans6
spring-boot6
Programming languages (2)
Github contributions (5)
mapstruct/mapstruct
Nov 2020 - Feb 2025
An annotation processor for generating type-safe bean mappers
Role in this project:
Back-end Developer
Back-end DeveloperContributions:44 reviews, 27 PRs, 28 pushes in 4 years 3 months
Contributions summary:Oliver primarily contributed to enhancing the MapStruct annotation processor, focusing on features related to lifecycle methods within the context of builders, record constructors, and related integrations. The user made significant changes to the `BeanMappingMethod` class, adding support for lifecycle methods, and also incorporated improvements to handle record constructors annotated with `@Default`. Additionally, the user addressed a CheckStyle configuration issue and provided support for source property name access. These changes involved modifications to core processor components and test suites.
bean-mappingmapstructtype-safebeanmapping
thunderhook/web-publishing-chain
Aug 2014 - Oct 2014
Contributions:17 commits in 2 months
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