What Java Libraries Streamline Automated Object Mapping?

Automated Java Object Mapping Tools

Many developers encounter the need to convert Domain Objects (DOs) into Data Transfer Objects (DTOs). This can be a tedious task, especially for complex object structures. To simplify this process, numerous Java libraries have been developed to automate object mapping.

One such library is Commons-BeanUtils. It provides utility methods for converting String scalar values to objects and String arrays to arrays of specified classes.

Another popular option is Commons-Lang. Its ArrayUtils class offers operations on arrays, primitive arrays, and primitive wrapper arrays.

Spring Framework also supports object mapping through its PropertyEditors. These editors can transform objects to and from strings.

For more advanced mapping scenarios, libraries like Dozer and ModelMapper are recommended. Dozer recursively copies data between beans, while ModelMapper automatically maps objects using a convention-based approach.

MapStruct and Orika take a different approach. They use compile-time code generation to create fast and type-safe mappers.

Finally, Selma is another code-generator that simplifies the creation of mappings.

These libraries provide a range of features and options to suit different object mapping needs. By utilizing these tools, developers can significantly reduce the time and effort required for object conversion tasks.

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