Orika - list to list conversion

Question

This is probably an easy one, but I cant find it in the docs. I have a person class

class BasicPerson {
   private String name;
   private int age;
   private Date birthDate;
   // getters/setters omitted
}

and a list of it

ArrayList<Person>

I want to change them to change them to

ArrayList<PersonDTO>

but with out an explicit loop. Is there a way to use MapperFacade.map for a list to list one line conversion ?

Answer 1

It has this functionality built-in. Did you tried using the method

List<D> ma.glasnost.orika.impl.ConfigurableMapper.mapAsList(Iterable<S> source, Class<D> destinationClass) ?

I tried to find a updated version of the Javadoc, but here is one of the 1.3.5. The current version is 1.4.5. MapperFacade Class

Answer 2

If you use the MapperFacade interface, Orika can perform the mapping multiple times on the collection:

final MapperFacade mapperFacade = mapperFactory.getMapperFacade();
final List<Person> people = // Get the person instances
final List<PersonDto> personDtos = mapperFacade.mapAsList(people, PersonDto.class);

On the other hand, if you use the BoundMapperFacade interface, it doesn't contain such a convenience method.

And lastly, if you choose to use the ConfigurableMapper approach, it also includes a mapAsList method which in fact delegates to the MapperFacade.mapAsList method.

Answer 3

package com.miya.takeaway.common.util.orika;

import com.miya.takeaway.common.util.orika.converter.ConverterHelper;
import ma.glasnost.orika.MapperFactory;
import ma.glasnost.orika.converter.ConverterFactory;
import ma.glasnost.orika.impl.DefaultMapperFactory;
import ma.glasnost.orika.metadata.ClassMapBuilder;
import org.apache.commons.collections4.CollectionUtils;

import java.util.Collections;
import java.util.List;

public class OrikaUtils {

    private static MapperFactory mapperFactory = new DefaultMapperFactory.Builder().build();


    public static <T> List<T> map(List<?> objects, Class<T> target) {
        if (CollectionUtils.isEmpty(objects)) {
            return Collections.EMPTY_LIST;
        }
        return mapperFactory.getMapperFacade().mapAsList(objects.toArray(), target);
    }
}