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package org.apache.cayenne.access;
import org.apache.cayenne.Cayenne;
import org.apache.cayenne.ObjectContext;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.query.EJBQLQuery;
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.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.sql.Types;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
@UseServerRuntime(CayenneProjects.TESTMAP_PROJECT)
public class DataContextEJBQLJoinsIT extends ServerCase {
@Inject
private ObjectContext context;
@Inject
protected DBHelper dbHelper;
protected TableHelper tArtist;
protected TableHelper tPainting;
protected TableHelper tGallery;
@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", "ARTIST_ID", "GALLERY_ID", "PAINTING_TITLE", "ESTIMATED_PRICE")
.setColumnTypes(Types.INTEGER, Types.BIGINT, Types.INTEGER, Types.VARCHAR, Types.DECIMAL);
tGallery = new TableHelper(dbHelper, "GALLERY");
tGallery.setColumns("GALLERY_ID", "GALLERY_NAME");
}
private void createFourArtistsFourPaintings() throws Exception {
tArtist.insert(33001, "AA1");
tArtist.insert(33002, "AA2");
tArtist.insert(33003, "BB1");
tArtist.insert(33004, "BB2");
tPainting.insert(33001, 33001, null, "P1", 3000);
tPainting.insert(33002, 33002, null, "P2", 5000);
tPainting.insert(33003, 33001, null, "AA1", 3000);
tPainting.insert(33004, 33002, null, "BB2", 3000);
}
private void createTwoArtistsOnePainting() throws Exception {
tArtist.insert(33001, "AA1");
tArtist.insert(33005, "AA1");
tPainting.insert(33001, 33001, null, "P1", 3000);
}
private void createTwoArtistsTwoPaintingsTwoGalleries() throws Exception {
tArtist.insert(33001, "AA1");
tArtist.insert(33002, "AA2");
tGallery.insert(33001, "gallery1");
tGallery.insert(33002, "gallery2");
tPainting.insert(33005, 33001, 33001, "CC1", 5000);
tPainting.insert(33006, 33002, 33002, "CC2", 5000);
}
private void createTwoArtistsThreePaintings() throws Exception {
tArtist.insert(33001, "AA1");
tArtist.insert(33002, "AA2");
tPainting.insert(33001, 33001, null, "P1", 3000);
tPainting.insert(33002, 33002, null, "P2", 5000);
tPainting.insert(33007, 33001, null, "P2", 5000);
}
@Test
public void testThetaJoins() throws Exception {
createFourArtistsFourPaintings();
String ejbql = "SELECT DISTINCT a FROM Artist a, Painting b " + "WHERE a.artistName = b.paintingTitle";
EJBQLQuery query = new EJBQLQuery(ejbql);
List<?> artists = context.performQuery(query);
assertEquals(2, artists.size());
Set<String> names = new HashSet<String>(2);
Iterator<?> it = artists.iterator();
while (it.hasNext()) {
Artist a = (Artist) it.next();
names.add(a.getArtistName());
}
assertTrue(names.contains("AA1"));
assertTrue(names.contains("BB2"));
}
@Test
public void testInnerJoins() throws Exception {
createTwoArtistsOnePainting();
String ejbql = "SELECT a FROM Artist a INNER JOIN a.paintingArray p " + "WHERE a.artistName = 'AA1'";
List<?> artists = context.performQuery(new EJBQLQuery(ejbql));
assertEquals(1, artists.size());
assertEquals(33001, Cayenne.intPKForObject((Artist) artists.get(0)));
}
@Test
public void testOuterJoins() throws Exception {
createTwoArtistsOnePainting();
String ejbql = "SELECT a FROM Artist a LEFT JOIN a.paintingArray p " + "WHERE a.artistName = 'AA1'";
List<?> artists = context.performQuery(new EJBQLQuery(ejbql));
assertEquals(2, artists.size());
Set<Object> ids = new HashSet<Object>(2);
Iterator<?> it = artists.iterator();
while (it.hasNext()) {
Artist a = (Artist) it.next();
ids.add(Cayenne.pkForObject(a));
}
assertTrue(ids.contains(33001l));
assertTrue(ids.contains(33005l));
}
@Test
public void testChainedJoins() throws Exception {
createTwoArtistsTwoPaintingsTwoGalleries();
String ejbql = "SELECT a FROM Artist a JOIN a.paintingArray p JOIN p.toGallery g "
+ "WHERE g.galleryName = 'gallery2'";
EJBQLQuery query = new EJBQLQuery(ejbql);
List<?> artists = context.performQuery(query);
assertEquals(1, artists.size());
assertEquals(33002, Cayenne.intPKForObject((Artist) artists.get(0)));
}
@Test
public void testImplicitJoins() throws Exception {
createTwoArtistsTwoPaintingsTwoGalleries();
String ejbql = "SELECT a FROM Artist a WHERE a.paintingArray.toGallery.galleryName = 'gallery2'";
EJBQLQuery query = new EJBQLQuery(ejbql);
List<?> artists = context.performQuery(query);
assertEquals(1, artists.size());
assertEquals(33002, Cayenne.intPKForObject((Artist) artists.get(0)));
}
@Test
public void testImplicitJoins_OUTER_LastComponent() throws Exception {
tArtist.insert(33001, "AA1");
tArtist.insert(33002, "AA2");
tPainting.insert(33005, 33001, null, "CC1", 5000);
tPainting.insert(33006, 33001, null, "CC2", 5000);
String ejbql = "SELECT a FROM Artist a WHERE a.paintingArray+ is null";
EJBQLQuery query = new EJBQLQuery(ejbql);
List<?> artists = context.performQuery(query);
assertEquals(1, artists.size());
assertEquals(33002, Cayenne.intPKForObject((Artist) artists.get(0)));
}
@Test
public void testImplicitJoins_OUTER_InTheMiddle() throws Exception {
tGallery.insert(33001, "gallery1");
tGallery.insert(33002, "gallery2");
tArtist.insert(33001, "AA1");
tArtist.insert(33002, "AA2");
tPainting.insert(33005, 33001, 33001, "CC1", 5000);
tPainting.insert(33006, 33001, 33002, "CC2", 5000);
String ejbql = "SELECT a FROM Artist a WHERE a.paintingArray+.toGallery is null";
EJBQLQuery query = new EJBQLQuery(ejbql);
List<?> artists = context.performQuery(query);
assertEquals(1, artists.size());
assertEquals(33002, Cayenne.intPKForObject((Artist) artists.get(0)));
}
@Test
public void testPartialImplicitJoins1() throws Exception {
createTwoArtistsTwoPaintingsTwoGalleries();
String ejbql = "SELECT a " + "FROM Artist a JOIN a.paintingArray b "
+ "WHERE a.paintingArray.toGallery.galleryName = 'gallery2'";
List<?> artists = context.performQuery(new EJBQLQuery(ejbql));
assertEquals(1, artists.size());
assertEquals(33002, Cayenne.intPKForObject((Artist) artists.get(0)));
}
@Test
public void testPartialImplicitJoins2() throws Exception {
createTwoArtistsTwoPaintingsTwoGalleries();
String ejbql = "SELECT a " + "FROM Artist a JOIN a.paintingArray b "
+ "WHERE a.paintingArray.paintingTitle = 'CC2'";
List<?> artists = context.performQuery(new EJBQLQuery(ejbql));
assertEquals(1, artists.size());
assertEquals(33002, Cayenne.intPKForObject((Artist) artists.get(0)));
}
@Test
public void testMultipleJoinsToTheSameTable() throws Exception {
createTwoArtistsThreePaintings();
String ejbql = "SELECT a " + "FROM Artist a JOIN a.paintingArray b JOIN a.paintingArray c "
+ "WHERE b.paintingTitle = 'P1' AND c.paintingTitle = 'P2'";
List<?> artists = context.performQuery(new EJBQLQuery(ejbql));
assertEquals(1, artists.size());
assertEquals(33001, Cayenne.intPKForObject((Artist) artists.get(0)));
}
}