ebean/src/test/java/org/tests/basic/TestManyLazyLoad.java

package org.tests.basic;

import io.ebean.BaseTestCase;
import io.ebean.Ebean;
import org.tests.model.basic.Order;
import org.tests.model.basic.OrderDetail;
import org.tests.model.basic.ResetBasicData;
import org.junit.Test;

import java.sql.Date;
import java.util.List;

import static org.junit.Assert.*;

public class TestManyLazyLoad extends BaseTestCase {

  @Test
  public void testLazyLoadRef() throws InterruptedException {

    ResetBasicData.reset();

    awaitL2Cache();

    List<Order> list = Ebean.find(Order.class).order().asc("id").findList();
    assertTrue(list.size() + " > 0", !list.isEmpty());

    // just use the first one
    Order order = list.get(0);

    // get it as a reference
    Order order1 = Ebean.getReference(Order.class, order.getId());
    assertNotNull(order1);

    Date orderDate = order1.getOrderDate();
    assertNotNull(orderDate);

    List<OrderDetail> details = order1.getDetails();

    // lazy load the details
    int sz = details.size();
    assertTrue(sz + " > 0", sz > 0);

    OrderDetail orderDetail = details.get(0);
    Order o = orderDetail.getOrder();
    assertSame(o, order1);

    // load detail into cache
    Ebean.find(OrderDetail.class, orderDetail.getId());

    // change order... list before a scalar property
    Order order2 = Ebean.getReference(Order.class, order.getId());
    assertNotNull(order2);

    List<OrderDetail> details2 = order2.getDetails();

    // lazy load the details
    int sz2 = details2.size();
    assertTrue(sz2 + " > 0", sz2 > 0);

    Order o2 = details2.get(0).getOrder();
    assertSame(o2, order2);
  }

}