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  package org.apache.cayenne.configuration;
  
  import org.apache.cayenne.access.DataRowStore;
  import org.apache.cayenne.access.NoSyncObjectStore;
  import org.apache.cayenne.access.ObjectMapRetainStrategy;
  import org.apache.cayenne.access.ObjectStore;
  import org.apache.cayenne.di.Inject;
  
  /**
   * A default implementation of {@link ObjectStoreFactory} which makes decision to
   * turn {@link ObjectStore}'s syncing with parent {@link DataRowStore} on or off 
   * basing on {@link RuntimeProperties}.
   * 
   * @since 3.1
   */
  public class DefaultObjectStoreFactory implements ObjectStoreFactory {
      
      @Inject
      protected RuntimeProperties runtimeProperties;
      
      @Inject
      protected ObjectMapRetainStrategy retainStrategy;
      
      public ObjectStore createObjectStore(DataRowStore dataRowCache) {
          boolean sync = runtimeProperties.getBoolean(Constants.CONTEXTS_SYNC_PROPERTY, false);
          
          return sync ? new ObjectStore(dataRowCache, retainStrategy.createObjectMap()) 
                  : new NoSyncObjectStore(dataRowCache, retainStrategy.createObjectMap());
      }
  }
  