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package org.apache.cayenne.access;
import org.apache.cayenne.Cayenne;
import org.apache.cayenne.PersistenceState;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.map.DeleteRule;
import org.apache.cayenne.map.ObjRelationship;
import org.apache.cayenne.query.SelectQuery;
import org.apache.cayenne.test.jdbc.DBHelper;
import org.apache.cayenne.test.jdbc.TableHelper;
import org.apache.cayenne.testdo.testmap.Artist;
import org.apache.cayenne.testdo.testmap.Painting;
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.Before;
import org.junit.Test;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
@UseServerRuntime(CayenneProjects.TESTMAP_PROJECT)
public class DeleteObjectIT extends ServerCase {
@Inject
protected DataContext context;
@Inject
protected DBHelper dbHelper;
protected TableHelper tArtist;
protected TableHelper tPainting;
@Before
public void setUp() throws Exception {
tArtist = new TableHelper(dbHelper, "ARTIST");
tArtist.setColumns("ARTIST_ID", "ARTIST_NAME");
tPainting = new TableHelper(dbHelper, "PAINTING");
tPainting.setColumns("PAINTING_ID", "PAINTING_TITLE", "ARTIST_ID");
}
protected void createHollowDataSet() throws Exception {
tArtist.insert(1, "artist1");
tPainting.insert(1, "painting1", 1);
}
protected void createObjectDataSet() throws Exception {
tArtist.insert(1, "artist1");
}
protected void createObjectsDataSet() throws Exception {
tArtist.insert(1, "artist1");
tArtist.insert(2, "artist2");
}
protected void createObjectsRelationshipCollectionDataSet() throws Exception {
tArtist.insert(1, "artist1");
tPainting.insert(1, "painting1", 1);
tPainting.insert(2, "painting2", 1);
tPainting.insert(3, "painting3", 1);
}
@Test
public void testDeleteObject() throws Exception {
createObjectDataSet();
Artist artist = Cayenne.objectForPK(context, Artist.class, 1);
assertEquals(PersistenceState.COMMITTED, artist.getPersistenceState());
context.deleteObject(artist);
assertEquals(PersistenceState.DELETED, artist.getPersistenceState());
context.commitChanges();
assertEquals(PersistenceState.TRANSIENT, artist.getPersistenceState());
assertNull(artist.getObjectContext());
}
@Test
public void testDeleteObjects1() throws Exception {
createObjectsDataSet();
List<Artist> artists = context.performQuery(new SelectQuery(Artist.class));
assertEquals(2, artists.size());
for (Artist object : artists) {
assertEquals(PersistenceState.COMMITTED, object.getPersistenceState());
}
context.deleteObjects(artists);
for (Artist object : artists) {
assertEquals(PersistenceState.DELETED, object.getPersistenceState());
}
}
// Similar to testDeleteObjects2, but extract ObjectContext instead of
// DataContext.
@Test
public void testDeleteObjects2() throws Exception {
createObjectsDataSet();
List<Artist> artists = context.performQuery(new SelectQuery(Artist.class));
assertEquals(2, artists.size());
for (Artist object : artists) {
assertEquals(PersistenceState.COMMITTED, object.getPersistenceState());
}
artists.get(0).getObjectContext().deleteObjects(artists);
for (Artist object : artists) {
assertEquals(PersistenceState.DELETED, object.getPersistenceState());
}
artists.get(0).getObjectContext().commitChanges();
for (Artist object : artists) {
assertEquals(PersistenceState.TRANSIENT, object.getPersistenceState());
}
}
@Test
public void testDeleteObjectsRelationshipCollection() throws Exception {
createObjectsRelationshipCollectionDataSet();
Artist artist = Cayenne.objectForPK(context, Artist.class, 1);
List<Painting> paintings = artist.getPaintingArray();
assertEquals(3, paintings.size());
// create a clone to be able to inspect paintings after deletion
List<Painting> paintingsClone = new ArrayList<Painting>(paintings);
for (Painting object : paintingsClone) {
assertEquals(PersistenceState.COMMITTED, object.getPersistenceState());
}
context.deleteObjects(paintings);
// as Painting -> Artist has Nullify rule, relationship list has to be
// cleaned up,
// and no exceptions thrown on concurrent modification...
ObjRelationship r = context.getEntityResolver().getObjEntity(Painting.class).getRelationship("toArtist");
assertEquals(DeleteRule.NULLIFY, r.getDeleteRule());
assertEquals(0, paintings.size());
for (Painting object : paintingsClone) {
assertEquals(PersistenceState.DELETED, object.getPersistenceState());
}
}
@Test
public void testDeleteObjectInIterator() throws Exception {
createObjectsRelationshipCollectionDataSet();
Artist artist = Cayenne.objectForPK(context, Artist.class, 1);
List<Painting> paintings = artist.getPaintingArray();
assertEquals(3, paintings.size());
// create a clone to be able to inspect paintings after deletion
List<Painting> paintingsClone = new ArrayList<Painting>(paintings);
for (Painting object : paintingsClone) {
assertEquals(PersistenceState.COMMITTED, object.getPersistenceState());
}
Iterator<Painting> deleteIt = paintings.iterator();
while (deleteIt.hasNext()) {
Painting object = deleteIt.next();
deleteIt.remove();
context.deleteObjects(object);
}
// relationship list has to be cleaned up,
// and no exceptions thrown on concurrent modification...
assertEquals(0, paintings.size());
for (Painting object : paintingsClone) {
assertEquals(PersistenceState.DELETED, object.getPersistenceState());
}
}
@Test
public void testDeleteHollow() throws Exception {
createHollowDataSet();
List<Painting> paintings = context.performQuery(new SelectQuery(Painting.class));
Painting p = paintings.get(0);
Artist a = p.getToArtist();
assertEquals(PersistenceState.HOLLOW, a.getPersistenceState());
context.deleteObjects(a);
assertEquals(PersistenceState.DELETED, a.getPersistenceState());
}
@Test
public void testDeleteNew() throws Exception {
Artist artist = context.newObject(Artist.class);
artist.setArtistName("a");
assertEquals(PersistenceState.NEW, artist.getPersistenceState());
context.deleteObjects(artist);
assertEquals(PersistenceState.TRANSIENT, artist.getPersistenceState());
context.rollbackChanges();
assertEquals(PersistenceState.TRANSIENT, artist.getPersistenceState());
}
}