juneau-examples/juneau-examples-core/src/main/java/org/apache/juneau/examples/core/html/HtmlComplexExample.java

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package org.apache.juneau.examples.core.html;

import org.apache.juneau.examples.core.pojo.Pojo;
import org.apache.juneau.examples.core.pojo.PojoComplex;
import org.apache.juneau.html.HtmlSerializer;
import org.apache.juneau.html.HtmlParser;

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

/**
 * Sample class which shows the complex usage of HtmlSerializer and HtmlParser.
 *
 * <ul class='seealso'>
 * 	<li class='extlink'>{@source}
 * </ul>
 */
public class HtmlComplexExample {

	/**
	 * Serializing PojoComplex bean into Html type
	 * and Deserialize back to PojoComplex instance type.
	 *
	 * @param args Unused.
	 * @throws Exception Unused.
	 */
	public static void main(String[] args) throws Exception {
		// Juneau provides static constants with the most commonly used configurations
		// Get a reference to a serializer - converting POJO to flat format
		/**
		 * Produces
		 * <table><tr><td>innerPojo</td><td><table><tr><td>name</td><td>name0</td></tr>
		 * <tr><td>id</td><td>1.0</td></tr></table></td></tr><tr><td>values</td><td><table>
		 * <tr><td>setOne</td><td><table _type="array"><tr><th>name</th><th>id</th></tr>
		 * <tr><td>name1</td><td>1.1</td></tr><tr><td>name2</td><td>1.1</td></tr>
		 * </table></td></tr><tr><td>setTwo</td><td><table _type="array"><tr><th>name
		 * </th><th>id</th></tr><tr><td>name1</td><td>1.2</td></tr><tr><td>name2</td><td>1.2
		 * </td></tr></table></td></tr></table></td></tr><tr><td>id</td><td>pojo</td></tr></table>
		 */
		HtmlSerializer htmlSerializer = HtmlSerializer.DEFAULT;
		// Get a reference to a parser - converts that flat format back into the POJO
		HtmlParser htmlParser = HtmlParser.DEFAULT;

		// Fill some data to a PojoComplex bean
		HashMap<String, List<Pojo>> values = new HashMap<>();
		ArrayList<Pojo> setOne = new ArrayList<>();
		setOne.add(new Pojo("1.1", "name1"));
		setOne.add(new Pojo("1.1", "name2"));
		ArrayList<Pojo> setTwo = new ArrayList<>();
		setTwo.add(new Pojo("1.2", "name1"));
		setTwo.add(new Pojo("1.2", "name2"));
		values.put("setOne", setOne);
		values.put("setTwo", setTwo);
		PojoComplex pojoc = new PojoComplex("pojo", new Pojo("1.0", "name0"), values);

		String flat = htmlSerializer.serialize(pojoc);

		// Print out the created POJO in JSON format.
		System.out.println(flat);

		PojoComplex parse = htmlParser.parse(flat, PojoComplex.class);

		assert parse.getId().equals(pojoc.getId());
		assert parse.getInnerPojo().getName().equals(pojoc.getInnerPojo().getName());
		assert parse.getInnerPojo().getId().equals(pojoc.getInnerPojo().getId());

		// The object above can be parsed thanks to the @BeanConstructor(properties = id,name) annotation on Pojo
		// Using this approach, you can keep your POJOs immutable, and still serialize and deserialize them.
	}
}