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90 lines
2.9 KiB
Java
90 lines
2.9 KiB
Java
package com.avaje.tests.batchload;
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import java.util.List;
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import org.junit.Assert;
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import org.junit.Test;
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import com.avaje.ebean.BaseTestCase;
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import com.avaje.ebean.Ebean;
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import com.avaje.ebean.FetchConfig;
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import com.avaje.ebean.Query;
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import com.avaje.tests.model.basic.Address;
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import com.avaje.tests.model.basic.Contact;
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import com.avaje.tests.model.basic.Customer;
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import com.avaje.tests.model.basic.Order;
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import com.avaje.tests.model.basic.ResetBasicData;
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public class TestLazyJoin2 extends BaseTestCase {
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@Test
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public void testLazyOnNonLoaded() {
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ResetBasicData.reset();
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// This will use 3 SQL queries to build this object graph
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List<Order> l0 = Ebean.find(Order.class).select("status, shipDate")
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.fetch("details", "orderQty, unitPrice", new FetchConfig().query())
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.fetch("details.product", "sku, name")
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.fetch("customer", "name", new FetchConfig().query(10))
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.fetch("customer.contacts", "firstName, lastName, mobile")
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.fetch("customer.shippingAddress", "line1, city").order().asc("id").findList();
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Order o0 = l0.get(0);
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Customer c0 = o0.getCustomer();
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List<Contact> contacts = c0.getContacts();
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Assert.assertTrue(contacts.size() > 0);
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// query 1) find order (status, shipDate)
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// query 2) find orderDetail (quantity, price) join product (sku, name)
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// where order.id in (?,? ...)
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// query 3) find customer (name) join contacts (*) join shippingAddress (*)
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// where id in (?,?,?,?,?)
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List<Order> orders = Ebean.find(Order.class)
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// .select("status")
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.fetch("customer", new FetchConfig().query(3).lazy(10)).order().asc("id").findList();
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// .join("customer.contacts");
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// List<Order> list = query.findList();
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Order order = orders.get(0);
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Customer customer = order.getCustomer();
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// this invokes lazy loading on a property that is
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// not one of the selected ones (name, status) ... and
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// therefore the lazy load query selects all properties
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// in the customer (not just name and status)
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Address billingAddress = customer.getBillingAddress();
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Assert.assertNotNull(billingAddress);
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List<Order> list = Ebean.find(Order.class).fetch("customer", "name", new FetchConfig().lazy(5))
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.fetch("customer.contacts", "contactName, phone, email").fetch("customer.shippingAddress")
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.where().eq("status", Order.Status.NEW).order().asc("id").findList();
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Order order2 = list.get(0);
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Customer customer2 = order2.getCustomer();
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// customer2.getStatus();
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String name = customer2.getName();
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Assert.assertNotNull(name);
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String q = "find order join customer (+query(1) +lazy(10) name, status) join customer.contacts ";
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Query<Order> query = Ebean.createQuery(Order.class, q);
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List<Order> list3 = query.findList();
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Order order3 = list3.get(0);
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String n3 = order3.getCustomer().getName();
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for (Order o3 : list3) {
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o3.getCustomer().getName();
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}
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Assert.assertNotNull(n3);
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}
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}
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