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   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache License, Version 2.0 (the
   *  "License"); you may not use this file except in compliance
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  package org.apache.cayenne.modeler.dialog.db.load;
  
  import org.apache.cayenne.CayenneRuntimeException;
  import org.apache.cayenne.dbsync.reverse.dbload.DefaultDbLoaderDelegate;
  import org.apache.cayenne.map.DbEntity;
  import org.apache.cayenne.map.DbRelationship;
  import org.apache.cayenne.map.event.EntityEvent;
  import org.apache.cayenne.map.event.MapEvent;
  import org.apache.cayenne.modeler.Application;
  
  final class LoaderDelegate extends DefaultDbLoaderDelegate {
  
      private DbLoaderContext context;
  
      LoaderDelegate(DbLoaderContext dbLoaderContext) {
          this.context = dbLoaderContext;
      }
  
      @Override
      public void dbEntityAdded(DbEntity entity) {
          checkCanceled();
          context.setStatusNote("Importing table '" + entity.getName() + "'...");
      }
  
      @Override
      public void dbEntityRemoved(DbEntity entity) {
          checkCanceled();
          if (context.isExistingDataMap()) {
              context.getProjectController().fireDbEntityEvent(new EntityEvent(Application.getFrame(), entity, MapEvent.REMOVE));
          }
      }
  
      @Override
      public boolean dbRelationship(DbEntity entity) {
          checkCanceled();
          context.setStatusNote("Load relationships for '" + entity.getName() + "'...");
          return true;
      }
  
      @Override
      public boolean dbRelationshipLoaded(DbEntity entity, DbRelationship relationship) {
          checkCanceled();
          context.setStatusNote("Load relationship: '" + entity.getName() + "'; '" + relationship.getName() + "'...");
          return true;
      }
  
      private void checkCanceled() {
          if (context.isStopping()) {
              throw new CayenneRuntimeException("Reengineering was canceled.");
          }
      }
  }
  