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package org.apache.cayenne.access;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.sql.Types;
import java.util.List;
import org.apache.cayenne.PersistenceState;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.query.SQLTemplate;
import org.apache.cayenne.test.jdbc.DBHelper;
import org.apache.cayenne.testdo.testmap.ArtGroup;
import org.apache.cayenne.testdo.testmap.Artist;
import org.apache.cayenne.testdo.testmap.ArtistExhibit;
import org.apache.cayenne.testdo.testmap.Exhibit;
import org.apache.cayenne.testdo.testmap.Gallery;
import org.apache.cayenne.testdo.testmap.Painting;
import org.apache.cayenne.testdo.testmap.PaintingInfo;
import org.apache.cayenne.unit.di.server.CayenneProjects;
import org.apache.cayenne.unit.di.server.ServerCase;
import org.apache.cayenne.unit.di.server.UseServerRuntime;
import org.junit.Test;
// TODO: redefine all test cases in terms of entities in "relationships" map
// and merge this test case with DeleteRulesTst that inherits
// from RelationshipTestCase.
@UseServerRuntime(CayenneProjects.TESTMAP_PROJECT)
public class DataContextDeleteRulesIT extends ServerCase {
@Inject
private DataContext context;
@Inject
private DBHelper dbHelper;
@Override
public void cleanUpDB() throws Exception {
dbHelper.update("ARTGROUP").set("PARENT_GROUP_ID", null, Types.INTEGER).execute();
super.cleanUpDB();
}
@Test
public void testNullifyToOne() {
// ArtGroup toParentGroup
ArtGroup parentGroup = (ArtGroup) context.newObject("ArtGroup");
parentGroup.setName("Parent");
ArtGroup childGroup = (ArtGroup) context.newObject("ArtGroup");
childGroup.setName("Child");
parentGroup.addToChildGroupsArray(childGroup);
// Check to make sure that the relationships are both exactly correct
// before starting. We're not really testing this, but it is imperative
// that it is correct before testing the real details.
assertEquals(parentGroup, childGroup.getToParentGroup());
assertTrue(parentGroup.getChildGroupsArray().contains(childGroup));
// Always good to commit before deleting... bad things happen otherwise
context.commitChanges();
context.deleteObjects(childGroup);
// The things we are testing.
assertFalse(parentGroup.getChildGroupsArray().contains(childGroup));
// Although deleted, the property should be null (good cleanup policy)
// assertNull(childGroup.getToParentGroup());
// And be sure that the commit works afterwards, just for sanity
context.commitChanges();
}
/**
* Tests that deleting a source of a flattened relationship with CASCADE
* rule results in deleting a join and a target.
*/
@Test
public void testCascadeToManyFlattened() {
// testing Artist.groupArray relationship
ArtGroup aGroup = context.newObject(ArtGroup.class);
aGroup.setName("Group Name");
Artist anArtist = context.newObject(Artist.class);
anArtist.setArtistName("A Name");
anArtist.addToGroupArray(aGroup);
assertTrue(anArtist.getGroupArray().contains(aGroup));
context.commitChanges();
SQLTemplate checkQuery = new SQLTemplate(Artist.class, "SELECT * FROM ARTIST_GROUP");
checkQuery.setFetchingDataRows(true);
List<?> joins1 = context.performQuery(checkQuery);
assertEquals(1, joins1.size());
context.deleteObjects(anArtist);
assertEquals(PersistenceState.DELETED, aGroup.getPersistenceState());
assertFalse(anArtist.getGroupArray().contains(aGroup));
context.commitChanges();
List<?> joins2 = context.performQuery(checkQuery);
assertEquals(0, joins2.size());
}
/**
* Tests that deleting a source of a flattened relationship with NULLIFY
* rule results in deleting a join together with the object deleted.
*/
@Test
public void testNullifyToManyFlattened() {
// testing ArtGroup.artistArray relationship
ArtGroup aGroup = context.newObject(ArtGroup.class);
aGroup.setName("Group Name");
Artist anArtist = context.newObject(Artist.class);
anArtist.setArtistName("A Name");
aGroup.addToArtistArray(anArtist);
context.commitChanges();
// Preconditions
assertTrue(aGroup.getArtistArray().contains(anArtist));
assertTrue(anArtist.getGroupArray().contains(aGroup));
SQLTemplate checkQuery = new SQLTemplate(Artist.class, "SELECT * FROM ARTIST_GROUP");
checkQuery.setFetchingDataRows(true);
List<?> joins1 = context.performQuery(checkQuery);
assertEquals(1, joins1.size());
context.deleteObjects(aGroup);
assertFalse(anArtist.getGroupArray().contains(aGroup));
context.commitChanges();
List<?> joins2 = context.performQuery(checkQuery);
assertEquals(0, joins2.size());
}
@Test
public void testNullifyToMany() {
// ArtGroup childGroupsArray
ArtGroup parentGroup = (ArtGroup) context.newObject("ArtGroup");
parentGroup.setName("Parent");
ArtGroup childGroup = (ArtGroup) context.newObject("ArtGroup");
childGroup.setName("Child");
parentGroup.addToChildGroupsArray(childGroup);
// Preconditions - good to check to be sure
assertEquals(parentGroup, childGroup.getToParentGroup());
assertTrue(parentGroup.getChildGroupsArray().contains(childGroup));
context.commitChanges();
context.deleteObjects(parentGroup);
// The things we are testing.
assertNull(childGroup.getToParentGroup());
// Although deleted, the property should be null (good cleanup policy)
// assertFalse(parentGroup.getChildGroupsArray().contains(childGroup));
context.commitChanges();
}
@Test
public void testCascadeToOne() {
// Painting toPaintingInfo
Painting painting = (Painting) context.newObject("Painting");
painting.setPaintingTitle("A Title");
PaintingInfo info = (PaintingInfo) context.newObject("PaintingInfo");
painting.setToPaintingInfo(info);
// Must commit before deleting.. this relationship is dependent,
// and everything must be committed for certain things to work
context.commitChanges();
context.deleteObjects(painting);
// info must also be deleted
assertEquals(PersistenceState.DELETED, info.getPersistenceState());
assertNull(info.getPainting());
assertNull(painting.getToPaintingInfo());
context.commitChanges();
}
@Test
public void testCascadeToMany() {
// Artist artistExhibitArray
Artist anArtist = (Artist) context.newObject("Artist");
anArtist.setArtistName("A Name");
Exhibit anExhibit = (Exhibit) context.newObject("Exhibit");
anExhibit.setClosingDate(new java.sql.Timestamp(System.currentTimeMillis()));
anExhibit.setOpeningDate(new java.sql.Timestamp(System.currentTimeMillis()));
// Needs a gallery... required for data integrity
Gallery gallery = (Gallery) context.newObject("Gallery");
gallery.setGalleryName("A Name");
anExhibit.setToGallery(gallery);
ArtistExhibit artistExhibit = (ArtistExhibit) context.newObject("ArtistExhibit");
artistExhibit.setToArtist(anArtist);
artistExhibit.setToExhibit(anExhibit);
context.commitChanges();
context.deleteObjects(anArtist);
// Test that the link record was deleted, and removed from the
// relationship
assertEquals(PersistenceState.DELETED, artistExhibit.getPersistenceState());
assertFalse(anArtist.getArtistExhibitArray().contains(artistExhibit));
context.commitChanges();
}
@Test
public void testDenyToMany() {
// Gallery paintingArray
Gallery gallery = (Gallery) context.newObject("Gallery");
gallery.setGalleryName("A Name");
Painting painting = (Painting) context.newObject("Painting");
painting.setPaintingTitle("A Title");
gallery.addToPaintingArray(painting);
context.commitChanges();
try {
context.deleteObjects(gallery);
fail("Should have thrown an exception");
} catch (Exception e) {
// GOOD!
}
context.commitChanges();
}
}