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How to inject an Orika FactoryMapper impl using Google Guice?

Using Google Guice, how do I inject an implementation of Orika's MapperFactory?

private MapperFactory mf = new DefaultMapperFactory.Builder().build();

i.e. the default constructor is not accessible and you need to use the builder.

Solution

  • In your Module, use bind() to register the built instance:

    bind(MapperFactory.class).toInstance(new DefaultMapperFactory.Builder().build());

    or use a @Provides method:

    @Provides
public MapperFactory mapperFactory() {
   new DefaultMapperFactory.Builder().build();
}

    with the first approach, you get a singleton, so every time you inject a MapperFactory, you get the same instance, in the second case, every time you inject, you get a freshly built copy.