AutoRecord

Java record newContext generator

What is AutoRecord

AutoRecord is a code generator that helps you easily generate Java records. It provides an easy way to avoid writing repetitive boilerplate code. It generates the code with features such as:

nullability checking
builders - incorporating Randgalt/record-builder library
memoization
ignoring fields in hashCode() and equals() methods
generated common methods if the record has an array recordComponent
exclusion from JaCoCo test coverage analysis

AutoRecord allows users to customize record generation process by:

specifying options
using custom annotation templates
implementing custom extensions

Why AutoRecord was created

Google AutoValue has long been used as a way to work with Value Classes in an easy way. However, when Java records were introduced, they lacked some features that AutoValue had, such as nullability checking, builders, and memoization. This is why AutoRecord was created.

How to use AutoRecord

To use AutoRecord, simply annotate your interface with @AutoRecord annotation:

import pl.com.labaj.autorecord.AutoRecord;

@AutoRecord
interface Person {
    String name();

    int age();
}

AutoRecord will then generate a Java record class that implements your interface. The constructor parameters correspond, in order, to the interface methods:

import pl.com.labaj.autorecord.GeneratedWithAutoRecord;

import javax.annotation.processing.Generated;

import static java.util.Objects.requireNonNull;

@Generated("pl.com.labaj.autorecord.AutoRecord")
@GeneratedWithAutoRecord
record PersonRecord(String name, int age) implements Person {
    PersonRecord {
        requireNonNull(name, "name must not be null");
    }
}

📝 Note
Here you can see example of generated record with all features provided by the library: Full.java

Documentation

For more information on how to use AutoRecord and all its features, please visit the project's Wiki.

Projects maintained in this repository

Project	Description
Auto Record API	Annotations to mark interfaces to be processed
Auto Record	Annotation processor to generate records
Auto Record Utilities	Utility classes used by generated records
ARICE API	Annotations to mark interface methods, used by ARICE
ARICE (Auto Record Immutable Collections Extension)	The extension for customizing a record generation process with support for immutable collections
ARICE Utilities	Utility classes used by ARICE

Getting started

Maven

Add the following dependency to your pom.xml file:

<dependency>
    <groupId>pl.com.labaj.autorecord</groupId>
    <artifactId>auto-record</artifactId>
    <version>${auto-record.version}</version>
    <scope>provided</scope>
</dependency>

Gradle

Declare the following dependency in your build.gradle script:

dependencies {
    annotationProcessor 'pl.com.labaj.autorecord:auto-record:${autoRecordVersion}'
}

IDE

Depending on your IDE you are likely to need to enable Annotation Processing in your IDE settings.

Contributing

We welcome contributions from all developers! If you would like to contribute to AutoRecord, please refer to the Contributing guide for more information on how to get started.

License

This project is licensed under the Apache 2.0 License.

pawellabaj/auto-record