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Java > Open Source Codes > org > objectstyle > cayenne > modeler > action > ObjEntitySyncAction


1 /* ====================================================================
2  *
3  * The ObjectStyle Group Software License, version 1.1
4  * ObjectStyle Group - http://objectstyle.org/
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6  * Copyright (c) 2002-2005, Andrei (Andrus) Adamchik and individual authors
7  * of the software. All rights reserved.
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10  * modification, are permitted provided that the following conditions
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22  * must include the following acknowlegement:
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24  * and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
25  * Alternately, this acknowlegement may appear in the software itself,
26  * if and wherever such third-party acknowlegements normally appear.
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28  * 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse
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30  * permission. For written permission, email
31  * "andrus at objectstyle dot org".
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34  * or "Cayenne", nor may "ObjectStyle" or "Cayenne" appear in their
35  * names without prior written permission.
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37  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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51  * This software consists of voluntary contributions made by many
52  * individuals and hosted on ObjectStyle Group web site. For more
53  * information on the ObjectStyle Group, please see
54  * <http://objectstyle.org/>.
55  */
56 package org.objectstyle.cayenne.modeler.action;
57
58 import java.awt.event.ActionEvent JavaDoc;
59
60 import org.objectstyle.cayenne.map.DataMap;
61 import org.objectstyle.cayenne.map.ObjEntity;
62 import org.objectstyle.cayenne.map.event.EntityEvent;
63 import org.objectstyle.cayenne.modeler.Application;
64 import org.objectstyle.cayenne.modeler.ProjectController;
65 import org.objectstyle.cayenne.modeler.util.CayenneAction;
66 import org.objectstyle.cayenne.project.ProjectPath;
67 import org.objectstyle.cayenne.util.EntityMergeSupport;
68
69 /**
70  * Action that synchronizes a given ObjEntity with the current state of the
71  * underlying DbEntity.
72  *
73  * @author Andrei Adamchik
74  */
75 public class ObjEntitySyncAction extends CayenneAction {
76
77     public static String JavaDoc getActionName() {
78         return "Sync ObjEntity with DbEntity";
79     }
80
81     public ObjEntitySyncAction(Application application) {
82         super(getActionName(), application);
83     }
84     
85     public String JavaDoc getIconName() {
86         return "icon-sync.gif";
87     }
88
89     /**
90      * @see org.objectstyle.cayenne.modeler.util.CayenneAction#performAction(ActionEvent)
91      */
92     public void performAction(ActionEvent JavaDoc e) {
93         synchObjEntity();
94     }
95
96     protected void synchObjEntity() {
97         ProjectController mediator = getProjectController();
98         DataMap map = mediator.getCurrentDataMap();
99         ObjEntity ent = mediator.getCurrentObjEntity();
100
101         if (map != null && ent != null) {
102             EntityMergeSupport merger = new EntityMergeSupport(map);
103             merger.synchronizeWithDbEntity(ent);
104
105             // fire a chain of "remove/add" events for entity
106 // this seems to be the only way to refresh the view
107 mediator.fireObjEntityEvent(
108                 new EntityEvent(this, ent, EntityEvent.REMOVE));
109
110             mediator.fireObjEntityEvent(
111                 new EntityEvent(this, ent, EntityEvent.ADD));
112         }
113     }
114     
115     /**
116      * Returns <code>true</code> if path contains a ObjEntity object.
117      */
118     public boolean enableForPath(ProjectPath path) {
119         if (path == null) {
120             return false;
121         }
122
123         return path.firstInstanceOf(ObjEntity.class) != null;
124     }
125 }
126
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