com.inspiresoftware.lib.dto.geda.examples.usecases.generics.RunWithGenerics Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of geda.examples Show documentation
Provides several examples of use of GeDA
There is a newer version: 3.2.0
/*
 * This code is distributed under The GNU Lesser General Public License (LGPLv3)
 * Please visit GNU site for LGPLv3 http://www.gnu.org/copyleft/lesser.html
 *
 * Copyright Denis Pavlov 2009
 * Web: http://www.genericdtoassembler.org
 * SVN: https://svn.code.sf.net/p/geda-genericdto/code/trunk/
 * SVN (mirror): http://geda-genericdto.googlecode.com/svn/trunk/
 */

package com.inspiresoftware.lib.dto.geda.examples.usecases.generics;

import com.inspiresoftware.lib.dto.geda.adapter.BeanFactory;
import com.inspiresoftware.lib.dto.geda.assembler.Assembler;
import com.inspiresoftware.lib.dto.geda.assembler.DTOAssembler;
import com.inspiresoftware.lib.dto.geda.exception.GeDAException;

import java.util.*;

import static org.junit.Assert.*;

/**
 * User: denispavlov
 * Date: 13-04-22
 * Time: 7:07 PM
 */
public class RunWithGenerics {

    /**
     * Example showing how to use GeDA with generics. The answer is that there is no difference
     * but you do need to at least distinguish between fields, collections and maps.
     */
    public void genericMapping() throws GeDAException {

        final DtoGenericClass>, Map>> dto = new DtoClass();
        final EntityClass entity = new EntityClass();

        final Assembler assembler = DTOAssembler.newAssembler(dto.getClass(), entity.getClass());

        final DtoGenericItemClass item = new DtoGenericItemClass();
        item.setMyProp("item");

        dto.setMyProp("prop");
        final List> coll = new ArrayList>();
        coll.add(item);
        dto.setMyColl(coll);
        final Map> map = new HashMap>();
        map.put("m1", item);
        dto.setMyMap(map);

        assembler.assembleEntity(dto, entity, null, new BeanFactory() {

            public Class getClazz(final String entityBeanKey) {
                return null;
            }

            public Object get(final String entityBeanKey) {
                return new EntityGenericItemClass();
            }

        });

        assertEquals("prop", entity.getMyProp());

        assertNotNull(entity.getMyColl());
        assertNotSame(dto.getMyColl(), entity.getMyColl());
        assertEquals(1, entity.getMyColl().size());
        assertEquals("item", entity.getMyColl().iterator().next().getMyProp());

        assertNotNull(entity.getMyMap());
        assertNotSame(dto.getMyMap(), entity.getMyMap());
        assertEquals(1, entity.getMyMap().size());
        assertEquals("item", entity.getMyMap().iterator().next().getMyProp());

        entity.setMyProp("e1");
        entity.getMyColl().iterator().next().setMyProp("ci1");
        entity.getMyMap().iterator().next().setMyProp("mi1");

        assembler.assembleDto(dto, entity, null, new BeanFactory() {

            public Class getClazz(final String entityBeanKey) {
                return null;
            }

            public Object get(final String entityBeanKey) {
                return new DtoGenericItemClass();
            }

        });

        assertEquals("e1", dto.getMyProp());

        assertNotNull(dto.getMyColl());
        assertNotSame(dto.getMyColl(), entity.getMyColl());
        assertEquals(1, dto.getMyColl().size());
        assertEquals("ci1", dto.getMyColl().iterator().next().getMyProp());

        assertNotNull(entity.getMyMap());
        assertNotSame(dto.getMyMap(), entity.getMyMap());
        assertEquals(1, dto.getMyMap().size());
        assertTrue(dto.getMyMap().containsKey("mi1"));
        assertEquals("mi1", dto.getMyMap().get("mi1").getMyProp());


    }

    public static void main(String[] args) {
        new RunWithGenerics().genericMapping();
    }


}