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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.access.DataNode;
 import  org.apache.cayenne.conf.DriverDataSourceFactory;
 import  org.apache.cayenne.conn.DataSourceInfo;
 import  org.apache.cayenne.project.NamedObjectFactory;
 import  org.apache.cayenne.project.ProjectDataSource;
 import  org.apache.cayenne.project.ProjectPath;

Andrei Adamchik
 public class CreateNodeAction extends CayenneAction {
     public static String getActionName() {
         return "Create DataNode";

Constructor for CreateNodeAction.

     public CreateNodeAction(Application application) {
         super(getActionName(), application);
     public String getIconName() {
         return "icon-node.gif";


See also:
     public void performAction(ActionEvent e) {
         ProjectController mediator = getProjectController();
         DataDomain domain = mediator.getCurrentDataDomain();
         // use domain name as DataNode base, as node names must be unique across the
         // project...
         DataNode node = buildDataNode();
         mediator.fireDataNodeEvent(new DataNodeEvent(thisnode, MapEvent.ADD));
         mediator.fireDataNodeDisplayEvent(new DataNodeDisplayEvent(thisdomainnode));

Creates a new DataNode, adding to the current domain, but doesn't send any events.
     protected DataNode buildDataNode() {
         ProjectController mediator = getProjectController();
         DataDomain domain = mediator.getCurrentDataDomain();
         // use domain name as DataNode base, as node names must be unique across the
         // project...
         DataNode node = createDataNode(domain);
         ProjectDataSource src = new ProjectDataSource(new DataSourceInfo());
         node.setAdapter(new ModelerDbAdapter(src));
         // by default create JDBC Node
         return node;

A factory method that makes a new DataNode.
    protected DataNode createDataNode(DataDomain domain) {
        String name = NamedObjectFactory.createName(DataNode.classdomaindomain
                + "Node");
        // ensure that DataNode exposes DataSource directly, so that UI widgets could work
        // with it.
        return new DataNode(name) {
            public DataSource getDataSource() {
                return dataSource;

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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