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  package org.apache.cayenne.modeler.action;
  
  import org.apache.cayenne.configuration.DataChannelDescriptor;
  import org.apache.cayenne.map.DataMap;
  import org.apache.cayenne.modeler.Application;
  import org.apache.cayenne.modeler.dialog.db.gen.DBGeneratorOptions;
  import org.apache.cayenne.modeler.util.CayenneAction;
  import org.apache.cayenne.project.Project;
  
  import java.awt.event.ActionEvent;
  import java.util.ArrayList;
  import java.util.Collection;
  
  /**
   * Action that generates database tables from a DataMap.
   */
  public class GenerateDBAction extends CayenneAction {
  
      public static String getActionName() {
          return "Generate Database Schema";
      }
  
      public GenerateDBAction(Application application) {
          super(getActionName(), application);
      }
  
      public void performAction(ActionEvent e) {
  
          Collection<DataMap> dataMaps;
          DataMap dataMap = getProjectController().getCurrentDataMap();
  
          if (dataMap != null) {
              dataMaps = new ArrayList<>();
              dataMaps.add(dataMap);
          } else {
              Project project = getProjectController().getProject();
              dataMaps = ((DataChannelDescriptor) project.getRootNode()).getDataMaps();
          }
          new DBGeneratorOptions(getProjectController(), "Generate DB Schema: Options", dataMaps)
                  .startupAction();
      }
  }
  