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Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file 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 with the License. You may obtain a copy of the License at Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. /
 package org.apache.cayenne.modeler.action;
 import  org.apache.cayenne.access.DataDomain;
 import  org.apache.cayenne.dba.DbAdapter;
 import  org.apache.cayenne.project.ProjectPath;

Action that imports database structure into a DataMap.
 public class ImportDBAction extends DBWizardAction {
     public static String getActionName() {
         return "Reengineer Database Schema";
     public ImportDBAction(Application application) {
         super(getActionName(), application);

Connects to DB and delegates processing to DbLoaderController, starting it asynchronously.
     public void performAction(ActionEvent event) {
         // guess node connection
         DBConnectionInfo nodeInfo = preferredDataSource();
         String nodeKey = preferredDataSourceLabel(nodeInfo);
         // connect
         ConnectionWizard connectWizard = new ConnectionWizard(
                 "Reengineer DB Schema: Connect to Database",
         if (!connectWizard.startupAction()) {
             // canceled
         Connection connection = connectWizard.getConnection();
         DbAdapter adapter = connectWizard.getAdapter();
         DBConnectionInfo dataSourceInfo = connectWizard.getConnectionInfo();
         // from here pass control to DbLoaderHelper, running it from a thread separate
         // from EventDispatch
         final DbLoaderHelper helper = new DbLoaderHelper(
         Thread th = new Thread(new Runnable() {
             public void run() {
                 SwingUtilities.invokeLater(new Runnable() {
                     public void run() {

Returns true if path contains a DataDomain object.
    public boolean enableForPath(ProjectPath path) {
        if (path == null) {
            return false;
        return path.firstInstanceOf(DataDomain.class) != null;
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