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* to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne.access;
import java.sql.Types;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.apache.cayenne.PersistenceState;
import org.apache.cayenne.ValueHolder;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.query.PrefetchTreeNode;
import org.apache.cayenne.query.SelectQuery;
import org.apache.cayenne.query.SortOrder;
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.testdo.testmap.PaintingInfo;
import org.apache.cayenne.unit.di.DataChannelInterceptor;
import org.apache.cayenne.unit.di.UnitTestClosure;
import org.apache.cayenne.unit.di.server.ServerCase;
import org.apache.cayenne.unit.di.server.UseServerRuntime;
@UseServerRuntime(ServerCase.TESTMAP_PROJECT)
public class DataContextDisjointByIdPrefetchTest extends ServerCase {
@Inject
protected DataContext context;
@Inject
protected DBHelper dbHelper;
@Inject
protected DataChannelInterceptor queryInterceptor;
private TableHelper tArtist;
private TableHelper tPainting;
private TableHelper tPaintingInfo;
@Override
protected void setUpAfterInjection() throws Exception {
dbHelper.deleteAll("PAINTING_INFO");
dbHelper.deleteAll("PAINTING");
dbHelper.deleteAll("ARTIST_EXHIBIT");
dbHelper.deleteAll("ARTIST_GROUP");
dbHelper.deleteAll("ARTIST");
tArtist = new TableHelper(dbHelper, "ARTIST");
tArtist.setColumns("ARTIST_ID", "ARTIST_NAME");
tPainting = new TableHelper(dbHelper, "PAINTING");
tPainting.setColumns("PAINTING_ID", "ARTIST_ID", "PAINTING_TITLE").setColumnTypes(Types.INTEGER, Types.BIGINT,
Types.VARCHAR);
tPaintingInfo = new TableHelper(dbHelper, "PAINTING_INFO");
tPaintingInfo.setColumns("PAINTING_ID", "TEXT_REVIEW");
}
private void createArtistWithTwoPaintingsDataSet() throws Exception {
tArtist.insert(1, "X");
for (int i = 1; i <= 2; i++) {
tPainting.insert(i, 1, "Y" + i);
}
}
private void createThreeArtistsWithPlentyOfPaintingsDataSet() throws Exception {
tArtist.insert(1, "bag1");
tArtist.insert(2, "bag2");
tArtist.insert(3, "bag3");
tPainting.insert(1, 1, "box1");
tPainting.insert(2, 1, "box2");
tPainting.insert(3, 1, "box3");
tPainting.insert(4, 1, "box4");
tPainting.insert(5, 1, "box5");
tPainting.insert(6, 2, "box6");
tPainting.insert(7, 2, "box7");
tPainting.insert(8, 3, "box8");
tPainting.insert(9, 3, "box9");
tPainting.insert(10, 3, "box10");
}
private void createTwoPaintingsWithInfosDataSet() throws Exception {
tArtist.insert(1, "bag1");
tPainting.insert(1, 1, "big");
tPaintingInfo.insert(1, "red");
tPainting.insert(2, 1, "small");
tPaintingInfo.insert(2, "green");
}
public void testOneToMany() throws Exception {
createArtistWithTwoPaintingsDataSet();
SelectQuery query = new SelectQuery(Artist.class);
query.addPrefetch(Artist.PAINTING_ARRAY_PROPERTY).setSemantics(
PrefetchTreeNode.DISJOINT_BY_ID_PREFETCH_SEMANTICS);
final List<Artist> result = context.performQuery(query);
queryInterceptor.runWithQueriesBlocked(new UnitTestClosure() {
public void execute() {
assertFalse(result.isEmpty());
Artist b1 = result.get(0);
List<Painting> toMany = (List<Painting>) b1.readPropertyDirectly(Artist.PAINTING_ARRAY_PROPERTY);
assertNotNull(toMany);
assertFalse(((ValueHolder) toMany).isFault());
assertEquals(2, toMany.size());
List<String> names = new ArrayList<String>();
for (Painting b : toMany) {
assertEquals(PersistenceState.COMMITTED, b.getPersistenceState());
names.add(b.getPaintingTitle());
}
assertTrue(names.contains("Y1"));
assertTrue(names.contains("Y2"));
}
});
}
public void testManyToOne() throws Exception {
createArtistWithTwoPaintingsDataSet();
SelectQuery query = new SelectQuery(Painting.class);
query.addPrefetch(Painting.TO_ARTIST_PROPERTY).setSemantics(PrefetchTreeNode.DISJOINT_BY_ID_PREFETCH_SEMANTICS);
final List<Painting> result = context.performQuery(query);
queryInterceptor.runWithQueriesBlocked(new UnitTestClosure() {
public void execute() {
assertFalse(result.isEmpty());
Painting b1 = result.get(0);
assertNotNull(b1.getToArtist());
assertEquals(PersistenceState.COMMITTED, b1.getToArtist().getPersistenceState());
assertEquals("X", b1.getToArtist().getArtistName());
}
});
}
public void testFetchLimit() throws Exception {
createThreeArtistsWithPlentyOfPaintingsDataSet();
final SelectQuery query = new SelectQuery(Artist.class);
query.addPrefetch(Artist.PAINTING_ARRAY_PROPERTY).setSemantics(
PrefetchTreeNode.DISJOINT_BY_ID_PREFETCH_SEMANTICS);
query.addOrdering("db:" + Artist.ARTIST_ID_PK_COLUMN, SortOrder.ASCENDING);
query.setFetchLimit(2);
// There will be only 2 bags in a result. The first bag has 5 boxes and
// the second has 2. So we are expecting exactly 9 snapshots in the data
// row store after performing the query.
final List<Artist> bags = context.performQuery(query);
queryInterceptor.runWithQueriesBlocked(new UnitTestClosure() {
public void execute() {
assertEquals(2, bags.size());
assertEquals(5, bags.get(0).getPaintingArray().size());
assertEquals(2, bags.get(1).getPaintingArray().size());
for (Artist b : bags) {
b.getArtistName();
for (Painting bx : b.getPaintingArray()) {
bx.getPaintingTitle();
}
}
}
});
}
public void testOneToOneRelationship() throws Exception {
createTwoPaintingsWithInfosDataSet();
SelectQuery query = new SelectQuery(Painting.class);
query.addPrefetch(Painting.TO_PAINTING_INFO_PROPERTY).setSemantics(
PrefetchTreeNode.DISJOINT_BY_ID_PREFETCH_SEMANTICS);
final List<Painting> result = context.performQuery(query);
queryInterceptor.runWithQueriesBlocked(new UnitTestClosure() {
public void execute() {
assertFalse(result.isEmpty());
List<String> boxColors = new ArrayList<String>();
for (Painting box : result) {
PaintingInfo info = (PaintingInfo) box.readPropertyDirectly(Painting.TO_PAINTING_INFO_PROPERTY);
assertNotNull(info);
boxColors.add(info.getTextReview());
assertEquals(PersistenceState.COMMITTED, info.getPersistenceState());
}
assertTrue(boxColors.containsAll(Arrays.asList("red", "green")));
}
});
}
}