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


1 /* ====================================================================
2  *
3  * The ObjectStyle Group Software License, version 1.1
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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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24  * and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
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26  * if and wherever such third-party acknowlegements normally appear.
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52  * individuals and hosted on ObjectStyle Group web site. For more
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54  * <http://objectstyle.org/>.
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56 package org.objectstyle.cayenne.modeler.action;
57
58 import java.awt.event.ActionEvent JavaDoc;
59
60 import org.objectstyle.cayenne.map.DerivedDbEntity;
61 import org.objectstyle.cayenne.map.event.EntityEvent;
62 import org.objectstyle.cayenne.modeler.Application;
63 import org.objectstyle.cayenne.modeler.util.CayenneAction;
64 import org.objectstyle.cayenne.modeler.util.ProjectUtil;
65 import org.objectstyle.cayenne.project.ProjectPath;
66
67 /**
68  * @author Andrei Adamchik
69  */
70 public class DerivedEntitySyncAction extends CayenneAction {
71
72     public static String JavaDoc getActionName() {
73         return "Reset Derived Entity";
74     }
75
76     /**
77      * Constructor for DerivedEntitySyncAction.
78      * @param name
79      */
80     public DerivedEntitySyncAction(Application application) {
81         super(getActionName(), application);
82     }
83
84     /**
85      * @see org.objectstyle.cayenne.modeler.util.CayenneAction#performAction(ActionEvent)
86      */
87     public void performAction(ActionEvent JavaDoc e) {
88         DerivedDbEntity ent = (DerivedDbEntity) getProjectController().getCurrentDbEntity();
89
90         if (ent != null && ent.getParentEntity() != null) {
91             ent.resetToParentView();
92             ProjectUtil.cleanObjMappings(getProjectController().getCurrentDataMap());
93
94             // fire a chain of "remove/add" events for entity
95 // this seems to be the only way to refresh the view
96 getProjectController().fireObjEntityEvent(
97                 new EntityEvent(this, ent, EntityEvent.REMOVE));
98             getProjectController().fireObjEntityEvent(new EntityEvent(this, ent, EntityEvent.ADD));
99         }
100     }
101
102     /**
103     * Returns <code>true</code> if path contains a DerivedDbEntity object.
104     */
105     public boolean enableForPath(ProjectPath path) {
106         if (path == null) {
107             return false;
108         }
109
110         return path.firstInstanceOf(DerivedDbEntity.class) != null;
111     }
112 }
113
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