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  package org.apache.cayenne.dbsync.merge.token.model;
  
  import org.apache.cayenne.dbsync.merge.context.MergerContext;
  import org.apache.cayenne.dbsync.merge.factory.MergerTokenFactory;
  import org.apache.cayenne.dbsync.merge.token.MergerToken;
  import org.apache.cayenne.map.DataMap;
  import org.apache.cayenne.map.DbEntity;
  import org.apache.cayenne.map.ObjEntity;
  
  /**
   * A {@link MergerToken} to remove a {@link DbEntity} from a {@link DataMap}. Any
   * {@link ObjEntity} mapped to the {@link DbEntity} will also be removed.
   * 
   */
  public class DropTableToModel extends AbstractToModelToken.Entity {
  
      public DropTableToModel(DbEntity entity) {
          super("Drop Table", 35, entity);
      }
  
      @Override
      public MergerToken createReverse(MergerTokenFactory factory) {
          return factory.createCreateTableToDb(getEntity());
      }
  
      @Override
      public void execute(MergerContext mergerContext) {
          for (ObjEntity objEntity : getEntity().mappedObjEntities()) {
              objEntity.getDataMap().removeObjEntity(objEntity.getName(), true);
              mergerContext.getDelegate().objEntityRemoved(objEntity);
          }
          getEntity().getDataMap().removeDbEntity(getEntity().getName(), true);
          mergerContext.getDelegate().dbEntityRemoved(getEntity());
      }
  }
  