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mapstruct

7 indexed repositories · View on GitHub

mapstruct
An annotation processor for generating type-safe bean mappers

Java · 7692 stars
mapstruct-examples
Examples for using MapStruct

Java · 1354 stars
mapstruct-spring-extensions
Helpful additions to MapStruct when using the Spring Framework.

Java · 181 stars
mapstruct-idea
An IntelliJ IDEA plugin for working with MapStruct

Java · 168 stars
mapstruct.org
Web site of the MapStruct project

CSS · 71 stars
tools-gem
Tool for generating annotation helper code

Java · 21 stars
mapstruct-eclipse
An Eclipse plug-in for working with MapStruct

Java · 12 stars

Beginner friendly Everything

Open All

support is* and has* Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

mapstruct/mapstruct#3926 · Opened Sep 4, 2025
provide actual name for default componentModel Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

mapstruct/mapstruct#3925 · 2 comments · Opened Sep 4, 2025
Automatic handling of bidirectional relationships to avoid StackOverflowError Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

mapstruct/mapstruct#3913 · Opened Aug 9, 2025
Fluent getters are not supported Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

mapstruct/mapstruct#3909 · 12 comments · 1 reaction · Opened Jul 31, 2025
Unmapped source properties error for String parameter mapped to nested target field Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

mapstruct/mapstruct#3907 · 1 comment · 2 reactions · Opened Jul 29, 2025
Check unknown target properties in new `@Ignored` annotation Open

feature

Difficulty 3/5 1-2 days Newbie friendliness 45/100

mapstruct/mapstruct-idea#238 · Opened Jul 20, 2025
Support fields that are written in the `@Ignored` annotation in the `UnmappedTargetPropertiesInspection` Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

mapstruct/mapstruct-idea#237 · Opened Jul 20, 2025
custom int -> enum mapper not used for nested property Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

mapstruct/mapstruct#3896 · 6 comments · Opened Jun 30, 2025
mapstruct behavioral issues Open

bug

Difficulty 5/5 Over a week Newbie friendliness 25/100

mapstruct/mapstruct#3895 · 6 comments · Opened Jun 27, 2025
Support simple static factory use Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mapstruct/mapstruct#3892 · 2 comments · Opened Jun 20, 2025
Update tycho-compiler-jdt to 4.0.13 version Open

build

mapstruct/mapstruct#3887 · 1 assignee · Opened Jun 14, 2025
Eclipse mapper agent generation ends with exception SourceTypeCollisionException or FilerException Open

bug

Difficulty 5/5 Over a week Newbie friendliness 25/100

mapstruct/mapstruct#3882 · 3 comments · Opened Jun 13, 2025
MapStruct plugin does not support kotlin's data classes annotated with `@JvmRecord` Open

kotlin

Difficulty 3/5 1-2 days Newbie friendliness 45/100

mapstruct/mapstruct-idea#231 · 1 comment · Opened Jun 11, 2025
Facing filer Exception in intelij. Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

mapstruct/mapstruct#3879 · 13 comments · Opened Jun 3, 2025
Investigate 2025.2 `JavaErrorFixProvider` Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

mapstruct/mapstruct-idea#225 · Opened May 26, 2025
Do not emit warning for unused source parameters of Map type Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

mapstruct/mapstruct#3861 · 3 comments · Opened May 20, 2025
@InheritConfiguration unexpected behavior Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

mapstruct/mapstruct#3858 · 5 comments · 1 reaction · Opened May 16, 2025
Collections are not mapped when using Immutables Builder (properties are not found by MapStruct) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

mapstruct/mapstruct#3855 · 1 comment · Opened May 13, 2025
Cyclic mapper definition results in NullPointerException Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mapstruct/mapstruct#3850 · 1 comment · Opened May 8, 2025
Ignore fields by Suffix or type Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mapstruct/mapstruct#3845 · 1 comment · Opened Apr 30, 2025
Conditional mapping by group Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

mapstruct/mapstruct#3843 · 1 comment · Opened Apr 28, 2025
Support for builder creation method with parameters Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

mapstruct/mapstruct#3842 · 1 comment · Opened Apr 24, 2025
Feature Request: Support for nested (source) property flattening via (custom) naming strategy Open

feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

mapstruct/mapstruct#3841 · Opened Apr 16, 2025
Nested @Mapping is ignored for unmapped source report Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

mapstruct/mapstruct#3839 · Opened Apr 9, 2025
[reopen]Redundant default parameter value assignment warning shouldn't appear if target is a string Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

mapstruct/mapstruct-idea#214 · 1 comment · Opened Apr 7, 2025
SubclassMapping generates an else branch for a sealed interface when the target is not abstract Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mapstruct/mapstruct#3836 · 3 comments · 2 reactions · Opened Mar 24, 2025
ClassCastException in MapStruct when Mapping JPA Entities in Multi-Module Project on Java 21 Open

bug closing-when-no-response

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mapstruct/mapstruct#3833 · 1 comment · Opened Mar 21, 2025
String -> Enum mapping own default behavior Open

feature

Difficulty 5/5 Over a week Newbie friendliness 28/100

mapstruct/mapstruct#3831 · 5 comments · 4 reactions · Opened Mar 15, 2025
Java 21 support Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mapstruct/mapstruct-examples#153 · 1 comment · Opened Mar 12, 2025
unmappedTargetPolicy = ReportingPolicy.ERROR does not throw any errors when a single inner object field is mapped but others are not Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mapstruct/mapstruct#3822 · 2 comments · Opened Feb 28, 2025
Default value code not reachable for source parameter Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

mapstruct/mapstruct#3819 · 4 comments · Opened Feb 24, 2025
target="." doesn't disambiguate multiple mappings Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

mapstruct/mapstruct#3818 · 4 comments · 2 reactions · Opened Feb 18, 2025
Module Info for Java 9+ and jLink Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

mapstruct/mapstruct#3817 · 1 comment · Opened Feb 17, 2025
Dependency Dashboard Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

mapstruct/mapstruct-spring-extensions#126 · Opened Feb 17, 2025
Mapping from java.util.Map to java.util.Map Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mapstruct/mapstruct#3811 · 1 comment · Opened Feb 3, 2025
Implement Fuzzy Algorithms to suggest the *Did you mean* with more precision Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

mapstruct/mapstruct#3808 · 1 comment · Opened Jan 23, 2025
Allow for default value being provided from an alternative source Open

feature

Difficulty 5/5 Over a week Newbie friendliness 35/100

mapstruct/mapstruct#3798 · 2 comments · Opened Jan 7, 2025
Version 1.6.x omits the fields provided as maps. Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mapstruct/mapstruct#3793 · 2 comments · 2 reactions · Opened Dec 19, 2024
Remove warnings for fluent removers. Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

mapstruct/mapstruct-idea#211 · Opened Dec 3, 2024
Custom generic configuration for DEFAULT types Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

mapstruct/mapstruct#3754 · 3 comments · Opened Nov 1, 2024
Improve documentation of `nullValuePropertyMappingStrategy` Open

documentation

Difficulty 3/5 1-2 days Newbie friendliness 38/100

mapstruct/mapstruct#3741 · 5 comments · Opened Oct 10, 2024
MapStruct does not detect unmapped source attribute if it nested. Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

mapstruct/mapstruct#3728 · 1 comment · 1 reaction · Opened Sep 26, 2024
Regression in MapStruct 1.6.x: Incorrect collection mapping code generation with custom mapper Open

bug

mapstruct/mapstruct#3725 · 7 comments · 1 assignee · Opened Sep 25, 2024
ClassCastException in the map with cycles example using builders after upgrading to 1.6.0+ Open

bug closing-when-no-response

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mapstruct/mapstruct#3722 · 4 comments · Opened Sep 21, 2024
Configure JReleaser for project Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

mapstruct/mapstruct-spring-extensions#115 · Opened Sep 14, 2024
Support Value Objects Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

mapstruct/mapstruct#3713 · 1 comment · 6 reactions · Opened Sep 13, 2024
Case where @BeanMapping(ignoreByDefault = true) has no effect in 1.6.0 Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

mapstruct/mapstruct#3709 · 1 comment · Opened Sep 11, 2024
Support `CollectionMappingStrategy` on `@BeanMapping` and `@Mapping` Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 52/100

mapstruct/mapstruct#3708 · 8 comments · Opened Sep 11, 2024
Mapstruct cannot find methods in abstract builder classes Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mapstruct/mapstruct#3707 · 2 comments · Opened Sep 10, 2024
make mapping target object to null when all its properties are null Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

mapstruct/mapstruct#3705 · 1 comment · Opened Sep 9, 2024

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