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  package org.apache.cayenne;
  
  import org.apache.cayenne.access.DataContext;
  import org.apache.cayenne.access.DataNode;
  import org.apache.cayenne.di.Inject;
  import org.apache.cayenne.map.DbEntity;
  import org.apache.cayenne.testdo.testmap.Artist;
  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;
  
  /**
   * This test case ensures that PK pre-generated for the entity manually before commit is
   * used during commit as well.
   */
  // TODO: 1/16/2006 - the algorithm used to generate the PK may be included in
  // DataObjectUtils to pull the PK on demand. A caveat - we need to analyze DataObject in
  // question to see if a PK is numeric and not propagated.
  @UseCayenneRuntime(CayenneProjects.TESTMAP_PROJECT)
  public class PregeneratedPKIT extends RuntimeCase {
  
      @Inject
      private DataContext context;
  
      @Test
      public void testLongPk() throws Exception {
          Artist a = context.newObject(Artist.class);
          a.setArtistName("XXX");
  
          updateId(context, a.getObjectId());
  
          Object pk = a.getObjectId().getReplacementIdMap().get(Artist.ARTIST_ID_PK_COLUMN);
          assertNotNull(pk);
  
          assertEquals(pk, Cayenne.longPKForObject(a));
  
          context.commitChanges();
  
          Object pkAfterCommit = a.getObjectId().getIdSnapshot().get(
                  Artist.ARTIST_ID_PK_COLUMN);
          assertEquals(pk, pkAfterCommit);
      }
  
      void updateId(DataContext context, ObjectId id) throws Exception {
          DbEntity entity = context.getEntityResolver().getDbEntity("ARTIST");
          DataNode node = context.getParentDataDomain().lookupDataNode(entity.getDataMap());
  
          Object pk = node.getAdapter().getPkGenerator().generatePk(
                  node,
                  entity.getPrimaryKeys().iterator().next());
          id.getReplacementIdMap().put(Artist.ARTIST_ID_PK_COLUMN, pk);
      }
  }
  