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  package org.apache.cayenne.lifecycle.relationship;
  
  import org.apache.cayenne.Cayenne;
  import org.apache.cayenne.ObjectContext;
  import org.apache.cayenne.lifecycle.db.E1;
  import org.apache.cayenne.lifecycle.db.UuidRoot1;
  import org.apache.cayenne.lifecycle.id.IdCoder;
  import org.apache.cayenne.query.ObjectSelect;
  import org.apache.cayenne.runtime.CayenneRuntime;
  import org.apache.cayenne.test.jdbc.DBHelper;
  import org.apache.cayenne.test.jdbc.TableHelper;
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotEquals;
  import static org.junit.Assert.assertSame;
  
  public class ObjectIdRelationshipHandlerTest {
  
      private CayenneRuntime runtime;
  
      private TableHelper rootTable;
      private TableHelper e1Table;
  
      @Before
      public void setUp() throws Exception {
          runtime = CayenneRuntime.builder().addConfig("cayenne-lifecycle.xml").build();
  
          // a filter is required to invalidate root objects after commit
          ObjectIdRelationshipFilter filter = new ObjectIdRelationshipFilter();
          runtime.getDataDomain().addQueryFilter(filter);
          runtime.getDataDomain().getEntityResolver().getCallbackRegistry().addListener(filter);
  
          DBHelper dbHelper = new DBHelper(runtime.getDataSource(null));
  
          rootTable = new TableHelper(dbHelper, "UUID_ROOT1").setColumns("ID", "UUID");
          rootTable.deleteAll();
  
          e1Table = new TableHelper(dbHelper, "E1").setColumns("ID");
          e1Table.deleteAll();
      }
  
      @After
      public void tearDown() {
          runtime.shutdown();
      }
  
      @Test
      public void testRelate_Existing() throws Exception {
  
          e1Table.insert(1);
  
          ObjectContext context = runtime.newContext();
          E1 e1 = (E1) Cayenne.objectForQuery(context, ObjectSelect.query(E1.class));
  
          UuidRoot1 r1 = context.newObject(UuidRoot1.class);
  
          IdCoder refHandler = new IdCoder(context.getEntityResolver());
          ObjectIdRelationshipHandler handler = new ObjectIdRelationshipHandler(refHandler);
          handler.relate(r1, e1);
  
          assertEquals("E1:1", r1.getUuid());
          assertSame(e1, r1.readPropertyDirectly("cay:related:uuid"));
  
          context.commitChanges();
  
          Object[] r1x = rootTable.select();
          assertEquals("E1:1", r1x[1]);
      }
  
      @Test
      public void testRelate_New() throws Exception {
  
          ObjectContext context = runtime.newContext();
          E1 e1 = context.newObject(E1.class);
  
          UuidRoot1 r1 = context.newObject(UuidRoot1.class);
  
          IdCoder refHandler = new IdCoder(context
                  .getEntityResolver());
          ObjectIdRelationshipHandler handler = new ObjectIdRelationshipHandler(refHandler);
          handler.relate(r1, e1);
  
          assertSame(e1, r1.readPropertyDirectly("cay:related:uuid"));
  
          context.commitChanges();
  
          int id = Cayenne.intPKForObject(e1);
  
          Object[] r1x = rootTable.select();
          assertEquals("E1:" + id, r1x[1]);
          assertEquals("E1:" + id, r1.getUuid());
      }
  
      @Test
      public void testRelate_Change() throws Exception {
  
          e1Table.insert(1);
          rootTable.insert(1, "E1:1");
  
          ObjectContext context = runtime.newContext();
  
          UuidRoot1 r1 = Cayenne.objectForPK(context, UuidRoot1.class, 1);
          assertEquals("E1:1", r1.getUuid());
  
          E1 e1 = context.newObject(E1.class);
  
          IdCoder refHandler = new IdCoder(context
                  .getEntityResolver());
          ObjectIdRelationshipHandler handler = new ObjectIdRelationshipHandler(refHandler);
          handler.relate(r1, e1);
  
          assertSame(e1, r1.readPropertyDirectly("cay:related:uuid"));
  
          context.commitChanges();
  
          int id = Cayenne.intPKForObject(e1);
          assertNotEquals(1, id);
  
          Object[] r1x = rootTable.select();
          assertEquals("E1:" + id, r1x[1]);
          assertEquals("E1:" + id, r1.getUuid());
          assertSame(e1, r1.readProperty("cay:related:uuid"));
      }
  }
  