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  package org.apache.cayenne.access;
  
  import org.apache.cayenne.PersistenceState;
  import org.apache.cayenne.di.Inject;
  import org.apache.cayenne.query.ObjectSelect;
  import org.apache.cayenne.testdo.binary_pk.BinaryPKTest1;
  import org.apache.cayenne.testdo.binary_pk.BinaryPKTest2;
  import org.apache.cayenne.unit.UnitDbAdapter;
  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.Test;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  
  @UseCayenneRuntime(CayenneProjects.BINARY_PK_PROJECT)
  public class DataContextBinaryPKIT extends RuntimeCase {
  
      @Inject
      private DataContext context;
  
      @Inject
      private DataContext context1;
  
      @Inject
      private UnitDbAdapter accessStackAdapter;
  
      @Test
      public void testInsertBinaryPK() throws Exception {
          if (accessStackAdapter.supportsBinaryPK()) {
  
              BinaryPKTest1 master = (BinaryPKTest1) context.newObject("BinaryPKTest1");
              master.setName("master1");
  
              BinaryPKTest2 detail = (BinaryPKTest2) context.newObject("BinaryPKTest2");
              detail.setDetailName("detail2");
  
              master.addToBinaryPKDetails(detail);
  
              context.commitChanges();
          }
      }
  
      @Test
      public void testFetchRelationshipBinaryPK() throws Exception {
          if (accessStackAdapter.supportsBinaryPK()) {
  
              BinaryPKTest1 master = (BinaryPKTest1) context.newObject("BinaryPKTest1");
              master.setName("master1");
  
              BinaryPKTest2 detail = (BinaryPKTest2) context.newObject("BinaryPKTest2");
              detail.setDetailName("detail2");
  
              master.addToBinaryPKDetails(detail);
  
              context.commitChanges();
              context.invalidateObjects(master, detail);
  
              BinaryPKTest2 fetchedDetail = ObjectSelect.query(BinaryPKTest2.class).selectFirst(context);
              assertNotNull(fetchedDetail.readPropertyDirectly("toBinaryPKMaster"));
  
              BinaryPKTest1 fetchedMaster = fetchedDetail.getToBinaryPKMaster();
              assertNotNull(fetchedMaster);
              assertEquals(PersistenceState.HOLLOW, fetchedMaster.getPersistenceState());
              assertEquals("master1", fetchedMaster.getName());
          }
      }
  }
  