# DozerMapper/dozer

Dozer is a Java Bean to Java Bean mapper that recursively copies data from one object to another.

Repository: https://github.com/DozerMapper/dozer
Canonical: https://ross.abutalabs.com/products/dozermapper-dozer
Homepage: https://dozermapper.github.io/
Language: Java
License: Apache-2.0
License Family: permissive
Last push: 2026-03-01T22:05:49+00:00

## Health v2 (maintenance only)
Score: 54/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 70, release rhythm 8, longevity 100
- inputs: {"age_days": 5336, "days_push": 185, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2108, forks 483 (observed 2026-08-28T04:06:14.082045+00:00)

## What it is
Dozer is a Java Bean to Java Bean mapping framework that recursively copies data between objects, supporting simple and complex type mapping, bi-directional and recursive mapping, and automatic type conversion via XML or code-based configuration. The project is no longer actively developed and its maintainers recommend migrating to alternatives like MapStruct or ModelMapper.

## Use cases
- map java beans to dtos without writing boilerplate converters
- copy data between domain objects and external service objects in a layered architecture
- recursively map nested collections of objects
- convert between different types automatically during object mapping
- configure bi-directional object mapping via xml

## When to choose
- maintaining an existing codebase that already uses Dozer
- you need runtime-configurable, reflection-based mapping without code generation
- you need flexible xml-based mapping configuration for legacy systems

## When to avoid
- starting a new greenfield project - the maintainers explicitly discourage this
- you want compile-time type safety and performance - prefer MapStruct
- you want an actively maintained library with ongoing bug fixes

## Facets
- artifact type: library
- maturity: maintenance
- function: serialization, developer-tools
- domain: developer-tools, backend, web-development
- platform: jvm
- tags: bean-mapping, object-mapping, dto, java-bean, reflection-based-mapping

## Member repositories
- DozerMapper/dozer (main) score 54

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:14.082045+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:53:52.421540+00:00, confidence not recorded.
  - readme: https://github.com/DozerMapper/dozer (fetched 2026-08-28T04:06:14.082045+00:00, sha 6a481e625e9c)
  - homepage: https://dozermapper.github.io/ (fetched 2026-08-29T10:33:56.237116+00:00, sha eabbc6fc08f5)
- Data as of 2026-08-30T08:39:29.467469+00:00.