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#919 - io.ebean package initial
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Rob Bygrave
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package org.tests.update;
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import io.ebean.BaseTestCase;
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import io.ebean.Ebean;
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import io.ebean.EbeanServer;
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import org.tests.model.basic.Contact;
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import org.tests.model.basic.Customer;
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import org.tests.model.basic.EBasic;
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import org.tests.model.basic.EBasic.Status;
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import org.junit.Assert;
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import org.junit.Test;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.LinkedHashSet;
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import java.util.List;
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import java.util.Set;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertNull;
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public class TestStatelessUpdate extends BaseTestCase {
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private EbeanServer server = server();
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@Test
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public void test() {
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EBasic e = new EBasic();
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e.setName("something");
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e.setStatus(Status.NEW);
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e.setDescription("wow");
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server.save(e);
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// confirm saved as expected
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EBasic eBasic = server.find(EBasic.class, e.getId());
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assertEquals(e.getId(), eBasic.getId());
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assertEquals(e.getName(), eBasic.getName());
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assertEquals(e.getStatus(), eBasic.getStatus());
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assertEquals(e.getDescription(), eBasic.getDescription());
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// test updating just the name
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EBasic updateAll = new EBasic();
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updateAll.setId(e.getId());
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updateAll.setName("updAllProps");
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server.update(updateAll, null, false);
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eBasic = server.find(EBasic.class, e.getId());
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assertEquals(e.getStatus(), eBasic.getStatus());
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assertEquals(e.getDescription(), eBasic.getDescription());
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assertEquals(updateAll.getName(), eBasic.getName());
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// test setting null
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EBasic updateDeflt = new EBasic();
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updateDeflt.setId(e.getId());
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updateDeflt.setName("updateDeflt");
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updateDeflt.setDescription(null);
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server.update(updateDeflt);
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// name and description changed (using null)
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eBasic = server.find(EBasic.class, e.getId());
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assertEquals(e.getStatus(), eBasic.getStatus());
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assertEquals(updateDeflt.getName(), eBasic.getName());
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assertNull(eBasic.getDescription());
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}
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/**
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* I am expecting that Ebean detects there aren't any changes and don't execute any query.
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* Currently a {@link javax.persistence.PersistenceException} with message 'Invalid value "null" for parameter "SQL"' is thrown.
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*/
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@Test
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public void testWithoutChangesAndIgnoreNullValues() {
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// arrange
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EBasic basic = new EBasic();
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basic.setName("something");
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basic.setStatus(Status.NEW);
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basic.setDescription("wow");
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server.save(basic);
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// act
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EBasic basicWithoutChanges = new EBasic();
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basicWithoutChanges.setId(basic.getId());
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server.update(basicWithoutChanges);
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// assert
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// Nothing to check, simply no exception should occur
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// maybe ensure that no update has been executed
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}
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/**
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* Nice to have:
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* <br />
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* Assuming we have a Version column, it will always be generated an Update despite we have nothing to update.
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* It would be nice that this would be recognized and no update would happen.
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* <br />
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* <br />
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* This feature already works for normal Updates!
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* <br />
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* see: {@link org.tests.update.TestUpdatePartial#testWithoutChangesAndVersionColumn()}
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*/
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@Test
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public void testWithoutChangesAndVersionColumnAndIgnoreNullValues() {
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// arrange
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Customer customer = new Customer();
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customer.setName("something");
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server.save(customer);
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// act
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Customer customerWithoutChanges = new Customer();
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customerWithoutChanges.setId(customer.getId());
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server.update(customerWithoutChanges);
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Customer result = Ebean.find(Customer.class, customer.getId());
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// assert
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assertEquals(customer.getUpdtime().getTime(), result.getUpdtime().getTime());
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}
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/**
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* Many relations mustn't be deleted when they are not loaded.
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*/
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@Test
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public void testStatelessUpdateIgnoreNullCollection() {
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// arrange
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Contact contact = new Contact();
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contact.setFirstName("wobu :P");
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Customer customer = new Customer();
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customer.setName("something");
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customer.setContacts(new ArrayList<>());
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customer.getContacts().add(contact);
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server.save(customer);
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// act
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Customer customerWithChange = new Customer();
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customerWithChange.setId(customer.getId());
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customerWithChange.setName("new name");
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// contacts is not loaded
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Assert.assertFalse(containsContacts(customerWithChange));
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server.update(customerWithChange);
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Customer result = Ebean.find(Customer.class, customer.getId());
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// assert null list was ignored (missing children not deleted)
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Assert.assertNotNull(result.getContacts());
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Assert.assertFalse("the contacts mustn't be deleted", result.getContacts().isEmpty());
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}
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/**
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* When BeanCollection is inadvertantly initialised and empty then ignore it
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* Specifically a non-BeanCollection (like ArrayList) is not ignored in terms
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* of deleting missing children.
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*/
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@Test
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public void testStatelessUpdateIgnoreEmptyBeanCollection() {
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// arrange
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Contact contact = new Contact();
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contact.setFirstName("wobu :P");
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Customer customer = new Customer();
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customer.setName("something");
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customer.setContacts(new ArrayList<>());
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customer.getContacts().add(contact);
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server.save(customer);
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// act
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Customer customerWithChange = new Customer();
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customerWithChange.setId(customer.getId());
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customerWithChange.setName("new name");
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// with Ebean enhancement this loads the an empty contacts BeanList
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customerWithChange.getContacts();
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// contacts has been initialised to empty BeanList
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Assert.assertTrue(containsContacts(customerWithChange));
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server.update(customerWithChange);
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Customer result = Ebean.find(Customer.class, customer.getId());
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// assert empty bean list was ignore (missing children not deleted)
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Assert.assertNotNull(result.getContacts());
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Assert.assertFalse("the contacts mustn't be deleted", result.getContacts().isEmpty());
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}
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@Test
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public void testStatelessUpdateDeleteChildrenForNonBeanCollection() {
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// arrange
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Contact contact = new Contact();
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contact.setFirstName("wobu :P");
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Customer customer = new Customer();
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customer.setName("something");
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customer.setContacts(new ArrayList<>());
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customer.getContacts().add(contact);
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server.save(customer);
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// act
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Customer customerWithChange = new Customer();
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customerWithChange.setId(customer.getId());
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customerWithChange.setName("new name");
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// with Ebean enhancement this loads the an empty contacts BeanList
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customerWithChange.setContacts(Collections.<Contact>emptyList());
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Assert.assertTrue(containsContacts(customerWithChange));
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server.update(customerWithChange);
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Customer result = Ebean.find(Customer.class, customer.getId());
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// assert empty bean list was ignore (missing children not deleted)
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Assert.assertNotNull(result.getContacts());
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Assert.assertTrue("the contacts were deleted", result.getContacts().isEmpty());
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}
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private boolean containsContacts(Customer cust) {
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return server.getBeanState(cust).getLoadedProps().contains("contacts");
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}
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/**
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* when using stateless updates with recursive calls,
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* the version column shouldn't decide to use insert instead of update,
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* although an ID has been set.
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*/
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@Test
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public void testStatelessRecursiveUpdateWithVersionField() {
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// arrange
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Contact contact1 = new Contact();
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contact1.setLastName("contact1");
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Contact contact2 = new Contact();
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contact2.setLastName("contact2");
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Customer customer = new Customer();
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customer.setName("something");
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customer.getContacts().add(contact1);
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customer.getContacts().add(contact2);
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server.save(customer);
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// act
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Contact updateContact1 = new Contact();
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updateContact1.setId(contact1.getId());
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Contact updateContact2 = new Contact();
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updateContact2.setId(contact2.getId());
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Customer updateCustomer = new Customer();
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updateCustomer.setId(customer.getId());
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updateCustomer.getContacts().add(updateContact1);
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updateCustomer.getContacts().add(updateContact2);
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server.update(updateCustomer);
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// assert
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// maybe check if update instead of insert has been executed,
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// currently "Unique index or primary key violation" PersistenceException is throwing
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}
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@Test
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public void testStatelessRecursiveUpdateWithChangesInDetailOnly() {
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// arrange
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Contact contact1 = new Contact();
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contact1.setLastName("contact1");
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Contact contact2 = new Contact();
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contact2.setLastName("contact2");
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Customer customer = new Customer();
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customer.setName("something");
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customer.getContacts().add(contact1);
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customer.getContacts().add(contact2);
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server.save(customer);
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// act
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Contact updateContact1 = new Contact();
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updateContact1.setId(contact1.getId());
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updateContact1.setLastName("contact1-changed");
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Contact updateContact3 = new Contact();
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//updateContact3.setId(contact3.getId());
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updateContact3.setLastName("contact3-added");
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Customer updateCustomer = new Customer();
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updateCustomer.setId(customer.getId());
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updateCustomer.getContacts().add(updateContact1);
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updateCustomer.getContacts().add(updateContact3);
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// not adding contact2 so it will get deleted
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//updateCustomer.getContacts().add(updateContact2);
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server.update(updateCustomer);
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// assert
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Customer assCustomer = server.find(Customer.class, customer.getId());
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List<Contact> assContacts = assCustomer.getContacts();
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assertEquals(2, assContacts.size());
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Set<Integer> ids = new LinkedHashSet<>();
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Set<String> names = new LinkedHashSet<>();
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for (Contact contact : assContacts) {
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ids.add(contact.getId());
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names.add(contact.getLastName());
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}
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Assert.assertTrue(ids.contains(contact1.getId()));
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Assert.assertTrue(ids.contains(updateContact3.getId()));
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Assert.assertFalse(ids.contains(contact2.getId()));
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Assert.assertTrue(names.contains(updateContact1.getLastName()));
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Assert.assertTrue(names.contains(updateContact3.getLastName()));
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}
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@Test
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public void testStatelessRecursiveUpdateWithChangesInDetailOnlyAnd() {
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// arrange
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Contact contact1 = new Contact();
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contact1.setLastName("contact1");
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Contact contact2 = new Contact();
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contact2.setLastName("contact2");
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Customer customer = new Customer();
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customer.setName("something");
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customer.getContacts().add(contact1);
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customer.getContacts().add(contact2);
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server.save(customer);
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// act
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Contact updateContact1 = new Contact();
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updateContact1.setId(contact1.getId());
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updateContact1.setLastName("contact1-changed");
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Contact updateContact3 = new Contact();
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updateContact3.setLastName("contact3-added");
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Customer updateCustomer = new Customer();
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updateCustomer.setId(customer.getId());
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updateCustomer.getContacts().add(updateContact1);
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updateCustomer.getContacts().add(updateContact3);
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// not adding contact2 but it won't be deleted in this case
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boolean deleteMissingChildren = false;
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server.update(updateCustomer, null, deleteMissingChildren);
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// assert
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Customer assCustomer = server.find(Customer.class, customer.getId());
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List<Contact> assContacts = assCustomer.getContacts();
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// contact 2 was not deleted this time
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assertEquals(3, assContacts.size());
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Set<Integer> ids = new LinkedHashSet<>();
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Set<String> names = new LinkedHashSet<>();
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for (Contact contact : assContacts) {
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ids.add(contact.getId());
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names.add(contact.getLastName());
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}
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Assert.assertTrue(ids.contains(contact1.getId()));
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Assert.assertTrue(ids.contains(updateContact3.getId()));
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Assert.assertTrue(ids.contains(contact2.getId()));
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Assert.assertTrue(names.contains(updateContact1.getLastName()));
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Assert.assertTrue(names.contains(contact2.getLastName()));
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Assert.assertTrue(names.contains(updateContact3.getLastName()));
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}
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}
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