How to Map?

Basic Syntax of ModelMapper.map() Method:

public <D> D map(Object source, Class<D> destinationType) {
        Assert.notNull(source, "source");
        Assert.notNull(destinationType, "destinationType");
        return this.mapInternal(source, (Object)null, destinationType, (String)null);
}

Let’s understand this map() with a simple example.

Example: Let’s say we have two object models one is the source and the other is the destination.

Source Model:

Destination Model:

By using ModelMapper.map() method we can implicitly map an Employee instance to a new EmployeeDTO

ModelMapper modelMapper = new ModelMapper();
EmployeeDTO employeeDTO = modelMapper.map(employee, EmployeeDTO.class);

If you are using Spring then you can also write the code in this way

@Autowired
private ModelMapper modelMapper;

EmployeeDTO employeeDTO = modelMapper.map(employee, EmployeeDTO.class);

Note: Reference article Spring @Autowired Annotation

ModelMapper is an intelligent, refactoring safe object mapping library that automatically maps objects to each other. The goal of ModelMapper is to make object mapping easy, by automatically determining how one object model maps to another, based on conventions. Some of the cool features of ModelMapper are:

• Intelligent
• Refactoring Safe
• Convention Based
• Extensible