Transformation class to populate the data in XML, following the pattern Transfer Object Assembler.

Transformer.java

package br.com.appweb.model.assembler;

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

import com.google.common.base.Function;

/**
 * Transformation class to populate the data in XML, following the pattern
 * Transfer Object Assembler.
 * 
 * @author Dilnei_Cunha
 */
public class Transformer {

	/**
	 * Execute the transformation of an object to an XML.
	 * 
	 * @param from
	 * @param function
	 * @return <F, T> T
	 */
	public static <F, T> T transform(F from, Function<? super F, ? extends T> function) {
		return (from == null) ? null : function.apply(from);
	}

	/**
	 * Execute the transformation of a list of objects to a list of XML.
	 * 
	 * @param fromList
	 * @param function
	 * @return <F, T> List<T>
	 */
	public static <F, T> List<T> transform(List<F> source, Function<? super F, ? extends T> function) {
		List<T> out = new ArrayList<>(source.size());

		for (F from : source) {
			out.add(function.apply(from));
		}
		return out;
	}
}