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  package org.apache.cayenne.access;
  
  import org.apache.cayenne.Cayenne;
  import org.apache.cayenne.ObjectContext;
  import org.apache.cayenne.QueryResponse;
  import org.apache.cayenne.di.Inject;
  import org.apache.cayenne.query.EJBQLQuery;
  import org.apache.cayenne.runtime.CayenneRuntime;
  import org.apache.cayenne.test.jdbc.DBHelper;
  import org.apache.cayenne.test.jdbc.TableHelper;
  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.sql.Types;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertNull;
  
  @UseCayenneRuntime(CayenneProjects.TESTMAP_PROJECT)
  public class DataContextEJBQLDeleteIT extends RuntimeCase {
  
      @Inject
      protected ObjectContext context;
  
      @Inject
      protected DBHelper dbHelper;
  
      @Inject
      protected CayenneRuntime runtime;
  
      protected TableHelper tPainting;
  
      @Before
      public void setUp() throws Exception {
          tPainting = new TableHelper(dbHelper, "PAINTING");
          tPainting.setColumns(
                  "PAINTING_ID",
                  "ARTIST_ID",
                  "PAINTING_TITLE",
                  "ESTIMATED_PRICE").setColumnTypes(
                  Types.INTEGER,
                  Types.BIGINT,
                  Types.VARCHAR,
                  Types.DECIMAL);
      }
  
      protected void createPaintingsDataSet() throws Exception {
          tPainting.insert(33001, null, "P1", 3000);
          tPainting.insert(33002, null, "P2", 5000);
      }
  
      @Test
      public void testDeleteNoIdVar() throws Exception {
          createPaintingsDataSet();
  
          String ejbql = "delete from Painting";
          EJBQLQuery query = new EJBQLQuery(ejbql);
  
          QueryResponse result = context.performGenericQuery(query);
  
          int[] count = result.firstUpdateCount();
          assertNotNull(count);
          assertEquals(1, count.length);
          assertEquals(2, count[0]);
      }
  
      @Test
      public void testDeleteNoQualifier() throws Exception {
          createPaintingsDataSet();
  
          String ejbql = "delete from Painting AS p";
          EJBQLQuery query = new EJBQLQuery(ejbql);
  
          QueryResponse result = context.performGenericQuery(query);
  
          int[] count = result.firstUpdateCount();
          assertNotNull(count);
          assertEquals(1, count.length);
          assertEquals(2, count[0]);
      }
  
      @Test
      public void testDeleteSameEntityQualifier() throws Exception {
          createPaintingsDataSet();
  
          String ejbql = "delete from Painting AS p WHERE p.paintingTitle = 'P2'";
          EJBQLQuery query = new EJBQLQuery(ejbql);
  
          QueryResponse result = context.performGenericQuery(query);
  
          int[] count = result.firstUpdateCount();
          assertNotNull(count);
          assertEquals(1, count.length);
          assertEquals(1, count[0]);
  
          ObjectContext freshContext = runtime.newContext();
  
          assertNotNull(Cayenne.objectForPK(freshContext, Painting.class, 33001));
          assertNull(Cayenne.objectForPK(freshContext, Painting.class, 33002));
      }
  
  }
  