This document discusses several object mapping libraries for Java, including Dozer, Orika, and JMapper. It provides information on their versions, last release dates, supported configurations, features, and performance characteristics to help determine the best option for mapping objects. Dozer is the most popular but less actively maintained, while Orika and JMapper generate bytecode for faster mapping and have more recent development.

1. Mapping options
by Ania Pietras

2. Why to use mappers?
- default settings -> less coding
- ‘global’ settings for handling NULLS, empty String ect.
- Simple conversions handling (lists, enums, different numeric types) ‘out of
the box’
- Centralization of mapping configuration in application

3. Available options
Source: http://stackoverflow.com/questions/1432764/any-tool-for-java-object-to-object-mapping/1432956
● Transmorph
● EZMorph
● Commons-BeanUtils
● Commons-Lang
● Commons-Convert
● Morph
● Lorentz
● Dozer
● ModelMapper
● OTOM
● Smooks
● MapStruct
● Orika
● JMapper

4. Available options
Library Dozer Orika JMapper
Version 5.5.1 1.4.6 1.4.2
Last release 04/2014 05/2015 09/2015
Configuration XML, annotation
(beta), JavaConfig
JavaConfig annotation, XML
Enum<>String yes yes no
Collections yes, + Map<>Pojo yes yes
Custom mappers yes, class/field yes, class/field yes, class/field

5. Dozer vs Orika vs JMapper

6. Dozer
● Reflection based (==slowly)
● Mapping from map to Object
● Develop since 2006r.
● Most popular
● Not actively maintained (152
issues on GitHub)
● stackOverflow: 1519 result
XML
ANNOTATION
JavaConfig

7. Orika
- Generates bytecode during first
mapping (first time is slow, then
faster)
- 27 open issues on GH
- Last commit 2 months ago
- stackOverflow: 211 results
- Developed since 2012
JavaConfig

8. Jmapper
- Generates bytecode during
application startup
- Last commit one month old
- 5 open issues on GH
- Dynamic converter declaration
(code snippets, including xml)
- Field mapping 1:n and n:1
- Support for flattening and
encapsulation
- StackOverflow: 19 results
- Developed since 2013
@GlobalJMap
ANNOTATIONS
XML