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Java > Open Source Codes > org > objectstyle > cayenne > modeler > dialog > objentity > ObjRelationshipInfoController


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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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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54  * <http://objectstyle.org/>.
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56 package org.objectstyle.cayenne.modeler.dialog.objentity;
57
58 import java.util.Collection JavaDoc;
59
60 import org.apache.log4j.Logger;
61 import org.objectstyle.cayenne.map.DbEntity;
62 import org.objectstyle.cayenne.map.DbRelationship;
63 import org.objectstyle.cayenne.map.ObjRelationship;
64 import org.objectstyle.cayenne.map.event.RelationshipEvent;
65 import org.objectstyle.cayenne.modeler.Application;
66 import org.objectstyle.cayenne.modeler.ProjectController;
67 import org.objectstyle.cayenne.modeler.dialog.ResolveDbRelationshipDialog;
68 import org.objectstyle.cayenne.project.NamedObjectFactory;
69 import org.scopemvc.controller.basic.BasicController;
70 import org.scopemvc.core.Control;
71 import org.scopemvc.core.ControlException;
72
73 /**
74  * @since 1.1
75  * @author Andrei Adamchik
76  */
77 public class ObjRelationshipInfoController extends BasicController {
78
79     static final Logger logObj = Logger.getLogger(ObjRelationshipInfoController.class);
80
81     public static final String JavaDoc SAVE_CONTROL = "cayenne.modeler.mapObjRelationship.save.button";
82     public static final String JavaDoc CANCEL_CONTROL = "cayenne.modeler.mapObjRelationship.cancel.button";
83     public static final String JavaDoc NEW_TOONE_CONTROL = "cayenne.modeler.mapObjRelationship.newtoone.button";
84     public static final String JavaDoc NEW_TOMANY_CONTROL = "cayenne.modeler.mapObjRelationship.newtomany.button";
85
86     protected ProjectController mediator;
87
88     public ObjRelationshipInfoController(ProjectController mediator,
89             ObjRelationship relationship) {
90
91         this.mediator = mediator;
92         Collection JavaDoc objEntities = mediator.getCurrentDataMap().getNamespace().getObjEntities();
93         ObjRelationshipInfoModel model = new ObjRelationshipInfoModel(
94                 relationship,
95                 objEntities);
96         setModel(model);
97     }
98
99     /**
100      * Creates and runs the classpath dialog.
101      */
102     public void startup() {
103         setView(new ObjRelationshipInfoDialog());
104         super.startup();
105     }
106
107     protected void doHandleControl(Control control) throws ControlException {
108         if (control.matchesID(CANCEL_CONTROL)) {
109             shutdown();
110         }
111         else if (control.matchesID(SAVE_CONTROL)) {
112             saveMapping();
113         }
114         else if (control.matchesID(NEW_TOONE_CONTROL)) {
115             createRelationship(false);
116         }
117         else if (control.matchesID(NEW_TOMANY_CONTROL)) {
118             createRelationship(true);
119         }
120     }
121
122     protected void saveMapping() {
123         ObjRelationshipInfoModel model = (ObjRelationshipInfoModel) getModel();
124
125         if (model.savePath()) {
126             mediator.fireObjRelationshipEvent(new RelationshipEvent(Application
127                     .getFrame(), model.getRelationship(), model
128                     .getRelationship()
129                     .getSourceEntity()));
130         }
131         shutdown();
132     }
133
134     /**
135      * Creates a new relationship connecting currently selected source entity with
136      * ObjRelationship target entity. User is allowed to edit the relationship, change its
137      * name, and create joins.
138      */
139     protected void createRelationship(boolean toMany) {
140         cancelEditing();
141
142         ObjRelationshipInfoModel model = (ObjRelationshipInfoModel) getModel();
143         DbEntity source = model.getStartEntity();
144         DbEntity target = model.getEndEntity();
145
146         EntityRelationshipsModel selectedPathComponent = model.getSelectedPathComponent();
147         if (selectedPathComponent != null) {
148             source = (DbEntity) selectedPathComponent.getSourceEntity();
149         }
150
151         DbRelationship dbRelationship = (DbRelationship) NamedObjectFactory
152                 .createRelationship(source, target, toMany);
153         // note: NamedObjectFactory doesn't set source or target, just the name
154 dbRelationship.setSourceEntity(source);
155         dbRelationship.setTargetEntity(target);
156         dbRelationship.setToMany(toMany);
157         source.addRelationship(dbRelationship);
158
159         // TODO: creating relationship outside of ResolveDbRelationshipDialog confuses it
160 // to send incorrect event - CHANGE instead of ADD
161 ResolveDbRelationshipDialog dialog = new ResolveDbRelationshipDialog(
162                 dbRelationship);
163
164         dialog.setVisible(true);
165         if (dialog.isCancelPressed()) {
166             source.removeRelationship(dbRelationship.getName());
167         }
168         else {
169             if (selectedPathComponent == null) {
170                 selectedPathComponent = (EntityRelationshipsModel) model
171                         .getDbRelationshipPath()
172                         .get(0);
173                 model.setSelectedPathComponent(selectedPathComponent);
174             }
175
176             selectedPathComponent.setRelationshipName(dbRelationship.getName());
177         }
178
179         dialog.dispose();
180     }
181
182     protected void cancelEditing() {
183         ((ObjRelationshipInfoDialog) getView()).cancelTableEditing();
184     }
185 }
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