ProductMapper.java

package mapper;

import api.v1.Product;
import models.ProductModel;

import java.util.ArrayList;
import java.util.List;

public class ProductMapper {

  public List<Product> mapToApi(List<ProductModel> mProducts) {
    List<Product> productList = new ArrayList<>();
    for (ProductModel mProduct : mProducts) {
      Product product = mapToApi(mProduct);
      productList.add(product);
    }
    return productList;
  }

  public Product mapToApi(ProductModel mProduct) {
    Product product = new Product();
    if ( mProduct != null ) {
      product.id = mProduct.id;
      product.name = mProduct.name;
      product.price = mProduct.price;
      product.sku = mProduct.sku;
      product.positionRequired = mProduct.positionRequired;
    }

    return product;
  }

  public ProductModel mapToModel(Product product, ProductModel model) {
    if (model == null) model = new ProductModel();
    model.id = product.id;
    model.name = product.name;
    model.price = product.price;
    model.sku = product.sku;
    model.positionRequired = product.positionRequired;
    return model;
  }

  public ProductModel mapToModel(Product product) {
    ProductModel model = new ProductModel();
    model.id = product.id;
    model.name = product.name;
    model.price = product.price;
    model.sku = product.sku;
    model.positionRequired = product.positionRequired;
    return model;
  }
}