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  package org.apache.cayenne.jcache;
  
  import org.apache.cayenne.CayenneRuntimeException;
  import org.apache.cayenne.ObjectContext;
  import org.apache.cayenne.cache.NestedQueryCache;
  import org.apache.cayenne.cache.QueryCache;
  import org.apache.cayenne.di.Binder;
  import org.apache.cayenne.di.Inject;
  import org.apache.cayenne.di.Module;
  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.apache.cayenne.testdo.testmap.Artist;
  import org.apache.cayenne.unit.di.runtime.CayenneProjects;
  import org.apache.cayenne.unit.di.runtime.ExtraModules;
  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 javax.cache.CacheManager;
  
  import java.net.URISyntaxException;
  import java.util.Objects;
  
  import static org.junit.Assert.assertEquals;
  
  @UseCayenneRuntime(CayenneProjects.TESTMAP_PROJECT)
  @ExtraModules(CayenneJCacheModuleIT.EhCacheModule.class)
  public class CayenneJCacheModuleIT extends RuntimeCase {
  
      @Inject
      private DBHelper dbHelper;
  
      @Inject
      ObjectContext context;
  
      @Inject
      CayenneRuntime runtime;
  
      private TableHelper tArtist;
  
      @Before
      public void setUpTableHelper() throws Exception {
          tArtist = new TableHelper(dbHelper, "ARTIST");
          tArtist.setColumns("ARTIST_ID", "ARTIST_NAME");
          tArtist.deleteAll();
      }
  
  
      @Test
      public void testCachedQueries() throws Exception {
          // make sure that we have JCacheQueryCache
          assertEquals(JCacheQueryCache.class, ((NestedQueryCache)runtime.getDataDomain().getQueryCache()).getDelegate().getClass());
  
          ObjectSelect<Artist> g1 = ObjectSelect.query(Artist.class).localCache("g1");
          ObjectSelect<Artist> g2 = ObjectSelect.query(Artist.class).localCache("g2");
  
          tArtist.insert(1, "artist1");
          tArtist.insert(2, "artist2");
          assertEquals(2, g1.select(context).size());
  
          // we are still cached, must not see the new changes
          tArtist.insert(3, "artist3");
          tArtist.insert(4, "artist4");
          assertEquals(2, g1.select(context).size());
  
          // different cache group - must see the changes
          assertEquals(4, g2.select(context).size());
  
          // refresh the cache, so that "g1" could see the changes
          runtime.getDataDomain().getQueryCache().removeGroup("g1");
          assertEquals(4, g1.select(context).size());
          assertEquals(4, g2.select(context).size());
      }
  
      public static class EhCacheModule implements Module {
          @Override
          public void configure(Binder binder) {
              binder.bind(CacheManager.class).toProvider(JCacheManagerProvider.class);
              binder.bind(JCacheConfigurationFactory.class).to(JCacheDefaultConfigurationFactory.class);
              binder.bind(QueryCache.class).to(JCacheQueryCache.class);
  
              String configURI;
              try {
                  configURI = Objects.requireNonNull(getClass().getResource("/eh-cache.xml")).toURI().toString();
              } catch (URISyntaxException e) {
                  throw new CayenneRuntimeException("Unable to resolve ehcache config resource URI.");
              }
              JCacheModule.extend(binder).setJCacheProviderConfig(configURI);
          }
      }
  }
  