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  package org.apache.cayenne.access;
  
  import org.apache.cayenne.Cayenne;
  import org.apache.cayenne.di.Inject;
  import org.apache.cayenne.query.RelationshipQuery;
  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.runtime.CayenneProjects;
  import org.apache.cayenne.unit.di.runtime.RuntimeCase;
  import org.apache.cayenne.unit.di.runtime.UseCayenneRuntime;
  import org.junit.Before;
  import org.junit.Test;
  
  import java.util.List;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  
  @UseCayenneRuntime(CayenneProjects.TESTMAP_PROJECT)
  public class DataContextRelationshipQueryIT extends RuntimeCase {
  
      @Inject
      private DataContext context;
  
      @Inject
      private DBHelper dbHelper;
  
      private TableHelper tArtist;
      private 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");
      }
  
      private void createOneArtistOnePaintingDataSet() throws Exception {
  
          tArtist.insert(1, "a1");
          tPainting.insert(1, "p1", 1);
      }
  
      @Test
      public void testUnrefreshingToOne() throws Exception {
  
          createOneArtistOnePaintingDataSet();
  
          Painting p = Cayenne.objectForPK(context, Painting.class, 1);
  
          // resolve artist once before running non-refreshing query, to check that we do
          // not refresh the object
  
          Artist a = Cayenne.objectForPK(context, Artist.class, 1);
          long v = a.getSnapshotVersion();
          int writeCalls = a.getPropertyWrittenDirectly();
          assertEquals("a1", a.getArtistName());
  
          assertEquals(1, tArtist
                  .update()
                  .set("ARTIST_NAME", "a2")
                  .where("ARTIST_ID", 1)
                  .execute());
  
          RelationshipQuery toOne = new RelationshipQuery(
                  p.getObjectId(),
                  Painting.TO_ARTIST.getName(),
                  false);
  
          List<Artist> related = context.performQuery(toOne);
          assertEquals(1, related.size());
          assertTrue(related.contains(a));
          assertEquals("a1", a.getArtistName());
          assertEquals(v, a.getSnapshotVersion());
          assertEquals(
                  "Looks like relationship query caused snapshot refresh",
                  writeCalls,
                  a.getPropertyWrittenDirectly());
      }
  
      @Test
      public void testRefreshingToOne() throws Exception {
  
          createOneArtistOnePaintingDataSet();
  
          Painting p = Cayenne.objectForPK(context, Painting.class, 1);
  
          // resolve artist once before running non-refreshing query, to check that we do
          // not refresh the object
  
          Artist a = Cayenne.objectForPK(context, Artist.class, 1);
          long v = a.getSnapshotVersion();
          int writeCalls = a.getPropertyWrittenDirectly();
          assertEquals("a1", a.getArtistName());
  
          assertEquals(1, tArtist
                  .update()
                  .set("ARTIST_NAME", "a2")
                  .where("ARTIST_ID", 1)
                  .execute());
  
          RelationshipQuery toOne = new RelationshipQuery(
                  p.getObjectId(),
                  Painting.TO_ARTIST.getName(),
                  true);
  
          List<Artist> related = context.performQuery(toOne);
          assertEquals(1, related.size());
          assertTrue(related.contains(a));
          assertEquals("a2", a.getArtistName());
          assertTrue("Looks like relationship query didn't cause a snapshot refresh", v < a
                  .getSnapshotVersion());
          assertTrue(
                  "Looks like relationship query didn't cause a snapshot refresh",
                  writeCalls < a.getPropertyWrittenDirectly());
      }
  }
  