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package org.apache.cayenne.access;
import java.util.List;
import org.apache.art.Artist;
import org.apache.art.Gallery;
import org.apache.art.Painting;
import org.apache.cayenne.DataRow;
import org.apache.cayenne.exp.Expression;
import org.apache.cayenne.query.SelectQuery;
import org.apache.cayenne.reflect.ArcProperty;
import org.apache.cayenne.reflect.ClassDescriptor;
import org.apache.cayenne.unit.CayenneCase;
/**
*/
public class DataRowUtilsTest extends CayenneCase {
protected DataContext context;
@Override
protected void setUp() throws Exception {
super.setUp();
deleteTestData();
context = createDataContext();
}
public void testMerge() throws Exception {
getAccessStack().createTestData(DataContextCase.class, "testArtists", null);
String n1 = "changed";
String n2 = "changed again";
SelectQuery artistQ = new SelectQuery(Artist.class, Expression
.fromString("artistName = 'artist1'"));
Artist a1 = (Artist) context.performQuery(artistQ).get(0);
a1.setArtistName(n1);
DataRow s2 = new DataRow(2);
s2.put("ARTIST_NAME", n2);
s2.put("DATE_OF_BIRTH", new java.util.Date());
ClassDescriptor d = context.getEntityResolver().getClassDescriptor("Artist");
DataRowUtils.mergeObjectWithSnapshot(context, d, a1, s2);
// name was modified, so it should not change during merge
assertEquals(n1, a1.getArtistName());
// date of birth came from database, it should be updated during merge
assertEquals(s2.get("DATE_OF_BIRTH"), a1.getDateOfBirth());
}
public void testIsToOneTargetModified() throws Exception {
getAccessStack().createTestData(DataContextCase.class, "testArtists", null);
ClassDescriptor d = context.getEntityResolver().getClassDescriptor("Painting");
ArcProperty toArtist = (ArcProperty) d.getProperty("toArtist");
SelectQuery artistQ = new SelectQuery(Artist.class, Expression
.fromString("artistName = 'artist2'"));
Artist anotherArtist = (Artist) context.performQuery(artistQ).get(0);
Painting painting = context.newObject(Painting.class);
painting.setPaintingTitle("PX");
painting.setToArtist(anotherArtist);
context.commitChanges();
artistQ = new SelectQuery(Artist.class, Expression
.fromString("artistName = 'artist1'"));
Artist artist = (Artist) context.performQuery(artistQ).get(0);
assertNotSame(artist, painting.getToArtist());
ObjectDiff diff = context.getObjectStore().registerDiff(
painting.getObjectId(),
null);
assertFalse(DataRowUtils.isToOneTargetModified(toArtist, painting, diff));
painting.setToArtist(artist);
assertTrue(DataRowUtils.isToOneTargetModified(toArtist, painting, diff));
}
public void testIsToOneTargetModifiedWithNewTarget() throws Exception {
createTestData("testIsToOneTargetModifiedWithNewTarget");
// add NEW gallery to painting
List paintings = context.performQuery(new SelectQuery(Painting.class));
assertEquals(1, paintings.size());
Painting p1 = (Painting) paintings.get(0);
ClassDescriptor d = context.getEntityResolver().getClassDescriptor("Painting");
ArcProperty toGallery = (ArcProperty) d.getProperty("toGallery");
ObjectDiff diff = context.getObjectStore().registerDiff(p1.getObjectId(), null);
assertFalse(DataRowUtils.isToOneTargetModified(toGallery, p1, diff));
Gallery g1 = (Gallery) context.newObject("Gallery");
g1.addToPaintingArray(p1);
assertTrue(DataRowUtils.isToOneTargetModified(toGallery, p1, diff));
}
}