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  package org.apache.cayenne.query;
  
  import org.apache.cayenne.DataRow;
  import org.apache.cayenne.di.Inject;
  import org.apache.cayenne.runtime.CayenneRuntime;
  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.assertNotNull;
  import static org.junit.Assert.assertNull;
  import static org.junit.Assert.assertTrue;
  
  @UseCayenneRuntime(CayenneProjects.TESTMAP_PROJECT)
  public class QueryChainIT extends RuntimeCase {
  
      @Inject
      private CayenneRuntime runtime;
  
      @Test
      public void testSelectQuery() {
  
          QueryChain chain = new QueryChain();
          chain.addQuery(ObjectSelect.query(Artist.class));
          chain.addQuery(ObjectSelect.query(Artist.class));
  
          QueryMetadata md = chain.getMetaData(runtime.getDataDomain().getEntityResolver());
  
          assertNotNull(md);
          assertTrue(md.isFetchingDataRows());
          assertNull(md.getObjEntity());
      }
  
      @Test
      public void testSelectQueryDataRows() {
  
          QueryChain chain = new QueryChain();
          ObjectSelect<DataRow> q1 = ObjectSelect.dataRowQuery(Artist.class);
          chain.addQuery(q1);
  
          ObjectSelect<DataRow> q2 = ObjectSelect.dataRowQuery(Artist.class);
          chain.addQuery(q2);
  
          QueryMetadata md = chain.getMetaData(runtime.getDataDomain().getEntityResolver());
  
          assertNotNull(md);
          assertTrue(md.isFetchingDataRows());
          assertNull(md.getObjEntity());
      }
  }
  