Apr 22, 2025 · Mapping between objects is a common requirement in Java applications, especially when transforming DTOs to Entities or vice versa. MapStruct simplifies this process by generating type-safe mappers at compile time. Let us delve into understanding how to map a source object to a target list using MapStruct. 1. Introduction

Mar 8, 2022 · @Mapper(componentModel = "spring") public interface TheMapper { @Mapping(target = "targetField1", source = "sourceField1") @Mapping(target = "targetField2", source = "sourceField2") @Mapping(target = "notInSourceField", source = "") TargetClass mapToTarget(SourceClass source); }

Jan 20, 2022 · Mapper Interface to map two objects into one will be like: @Mapper public interface CalculateTimeMapper{ @Mapping(source = "schedule.timezoneId", target = "timezone") @Mapping(source = "availabilityRule.startEpoch", target = "startTime") AvailabilityRuleDTO toAvailabilityRuleDTO(AvailabilityRule availabilityRule, Schedule schedule); }

Jun 21, 2024 · It tells MapStruct how to map a specific field in the source object to a field in the target object. You can specify custom logic for complex transformations or even rename fields during the conversion process.

Jun 9, 2016 · How can I pass multiple values (xmlSchedule, lecture) to a mapper? What you can do is create an @AfterMapping method to populate those parts manually: @Mappings({ @Mapping(target = "name", source = "scheduleName"), @Mapping(target = "scheduler", source = "schedulerName"),

Jun 26, 2024 · The Mapping annotation is used within the mapper interface to specify how a particular field in the source object maps to a field in the target object.

Apr 27, 2023 · Discover how to simplify Java mapping with MapStruct. Explore its benefits, advanced techniques, best practices, integration with Java frameworks, and real-world examples. Start enhancing...

May 11, 2024 · In this tutorial, we’ll see how to use multiple source objects with MapStruct. 2. Single Source Object. The most common use case for MapStruct is to map one object to another. Let’s assume we have a Customer class: private String firstName; private String lastName; // getters and setters .

Explore how to effectively map multiple source fields to same type target fields in Java using MapStruct, with examples and common pitfalls.

Jan 12, 2025 · In this advanced MapStruct tutorial, we explored various features that enhance object mapping in Java applications: Mapping from multiple sources into a single target object. Using Java expressions for complex field mappings.