SpringDataPageUtils to convert paged entities to paged model objects

SpringDataPageUtils.java

import org.springframework.data.domain.Page;
import org.springframework.data.support.PageableExecutionUtils;

import java.util.function.Function;
import java.util.stream.Collectors;

public final class SpringDataPageUtils {

    public static <T, C> Page<C> convertPage(Page<T> page, Function<T, C> converter) {
        return PageableExecutionUtils.getPage(
                page.getContent()
                        .stream()
                        .map(converter)
                        .collect(Collectors.toList()),
                page.getPageable(),
                page::getTotalElements
        );
    }

}

SpringDataPageUtilsExample.java

Page<Product> page = productRepository...;

Page<ProductModel> convertedPage = SpringDataPageUtils.convertPage(page, eachProduct -> {
    ProductModel productModel = new ProductModel();
    productModel.setId(eachProduct.getId());
    ...
    return productModel;
});