lombok – Page 3 – Tarik Billa

Lombok and AspectJ

December 6, 2023 by Tarik

Use ajc to process classes. <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>aspectj-maven-plugin</artifactId> <version>1.11</version> <configuration> <complianceLevel>8</complianceLevel> <source>8</source> <target>8</target> <showWeaveInfo>true</showWeaveInfo> <verbose>true</verbose> <Xlint>ignore</Xlint> <encoding>UTF-8</encoding> <!– IMPORTANT–> <excludes> <exclude>**/*.java</exclude> </excludes> <forceAjcCompile>true</forceAjcCompile> <sources/> <!– IMPORTANT–> <aspectLibraries> <aspectLibrary> <groupId>you.own.aspect.libary</groupId> <artifactId>your-library</artifactId> </aspectLibrary> </aspectLibraries> </configuration> <executions> <execution> <id>default-compile</id> <phase>process-classes</phase> <goals> <!– use this goal to weave all your main classes –> <goal>compile</goal> </goals> <configuration> <weaveDirectories> <weaveDirectory>${project.build.directory}/classes</weaveDirectory> </weaveDirectories> … Read more

Does the Project Lombok @Data annotation create a constructor of any kind?

December 2, 2023 by Tarik

A @RequiredArgsConstructor will be generated if no constructor has been defined. The Project Lombok @Data page explains: @Data is like having implicit @Getter, @Setter, @ToString, @EqualsAndHashCode and @RequiredArgsConstructor annotations on the class (except that no constructor will be generated if any explicitly written constructor exists).

Lombok and Maven

November 28, 2023 by Tarik

This might work <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.6.0</version> <configuration> <source>1.8</source> <target>1.8</target> <annotationProcessorPaths> <path> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.16.12</version> </path> </annotationProcessorPaths> </configuration> </plugin> </plugins> </build> Latest versions: https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-compiler-plugin https://mvnrepository.com/artifact/org.projectlombok/lombok

Edit lombok getter method name for boolean member having prefix “has”

November 24, 2023 by Tarik

in your case it could be: class XY : Object { @Getter(fluent = true) public boolean hasObject; } OR @Accessors(fluent = true) class XY : Object { public boolean hasObject; } according to the docs: fluent – A boolean. If true, the getter for pepper is just pepper(), and the setter is pepper(T newValue). Furthermore, … Read more

Compilation error after upgrading to JDK 21 – “NoSuchFieldError: JCImport does not have member field JCTree qualid”

November 19, 2023 by Tarik

The culprit is Lombok. The minimal Lombok version compatible with JDK 21 is 1.18.30. This implies that the minimal Spring Boot version is 3.1.4, unless you want to meddle with the Spring Boot autoconfiguration and set the Lombok version in your project differently from the Spring Boot BOM defined in spring-boot-dependencies. See: https://github.com/projectlombok/lombok/issues/3393

Warning equals/hashCode on Lombok’s @Data annotation with inheritance

October 30, 2023 by Tarik

The default value is false. That is the one you get if you don’t specify it and ignore the warning. Yes, it is recommended to add an @EqualsAndHashCode annotation on the @Data annotated classes that extend something else than Object. I cannot tell you if you need true or false, that depends on your class … Read more

MapStruct + Lombok together not compiling: unknown property in result type

October 4, 2023 by Tarik

The reason why it does not work is because Maven only uses the MapStruct processor and not the Lombok one. The annotationProcessorPaths tells maven which processors it should use. The delombok does nothing as you are ending up with 2 files per class and I think that the maven compiler does not see them. You … Read more

How to run code after constructor in a Lombok builder

September 22, 2023 by Tarik

In Foo you could manually add a constructor, have that do the initialization, and put @Builder on the constructor. I know that you already know this, but I think it is the right solution, and you won’t forget to add the parameter since you do want to use the code in the builder anyway. Disclosure: … Read more

Inheritance for builders in lombok

September 19, 2023 by Tarik

Here we just need to call super of the builder. @Data public class B extends A { Integer b1; @Builder public B(Integer b1, Integer a1) { super(a1); this.b1 = b1; } public static class BBuilder extends ABuilder{ BBuilder() { super(); } } }

Spring Boot logging with Lombok

September 19, 2023 by Tarik

I would use @Slf4j. Tested the following and it works as expected. @SpringBootApplication @Slf4j public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); log.info(“testing logging with lombok”); } } Then you can change the logging level as described here. logging.level.com.example.DemoApplication=WARN Note: Below clarifies that SLF4J is correctly handled but point is made … Read more