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Java > Open Source Codes > de > webman > config > eventhandler > COPropGroupUpdateHandler


1 package de.webman.config.eventhandler;
2
3 import java.util.*;
4 import java.sql.*;
5
6 import com.teamkonzept.web.*;
7 import com.teamkonzept.lib.*;
8 import com.teamkonzept.db.*;
9 import com.teamkonzept.webman.*;
10 import com.teamkonzept.webman.mainint.*;
11 import com.teamkonzept.webman.mainint.db.queries.*;
12 import com.teamkonzept.webman.mainint.events.*;
13 import de.webman.config.eventhandler.COPropUpdateHandler;
14
15 /**
16    creates a new property group or updates an existing group with the given name PROPGROUP_NEW_NAME.
17    after that, it displays a frameset with the list of property groups on the left
18    and an empty page to the right.
19    
20    if the given name is NULL, there are no changes and displays a frameset with the list of
21    property groups on the left and an error page to the right.
22  * @author $Author: doehling $
23  * @version $Revision: 1.10 $
24 */
25 public class COPropGroupUpdateHandler extends DefaultEventHandler implements ParameterTypes, DatabaseDefaults, FrameConstants
26 {
27     /** */
28     private COPropGroupUpdateHandler() {}
29
30     private static COPropGroupUpdateHandler instance = new COPropGroupUpdateHandler();
31
32     public static COPropGroupUpdateHandler getInstance()
33     {
34         return instance;
35     }
36
37     public void handleEvent(TKEvent evt) throws TKException
38     {
39         try
40         {
41             WebManEvent.checkEvent(evt.getRemoteUser(), evt.getName(), ContextConstants.CUSTOMIZE_PROPERTIES); // check if event is allowed
42 String JavaDoc propGroupId = evt.getParameter(PARAMETER, "PROPGROUP_ID");
43             String JavaDoc propGroupName = evt.getParameter(PARAMETER, "PROPGROUP_NAME");
44             String JavaDoc propGroupNewName = evt.getParameter(PARAMETER, "PROPGROUP_NEW_NAME");
45             boolean newGroup = false;
46             boolean noDuplicateExists = true;
47             boolean nameGiven = true;
48             TKQuery q = TKDBManager.newQuery(TKDBPropGroupGetAll.class);
49
50             // check, ob es sich um eine neuanzulegende gruppe handelt
51 propGroupId = (propGroupId != null ? propGroupId : "-1");
52             if ( propGroupId.equals("-1") )
53             {
54                 newGroup = true;
55             }
56             
57             // check, ob ueberhaupt ein name eingegeben wurde
58 if ( propGroupNewName == null || propGroupNewName.equals("") )
59             {
60                 nameGiven = false;
61             }
62             
63             // nein - ueberpruefung, ob eine gleichnamige gruppe bereits existiert
64 if ( nameGiven )
65             {
66                 // find all groups - q schon oben definiert
67 q.execute();
68                 ResultSet rs = q.fetchResultSet();
69
70                 // check, ob eine andere gleichnamige gruppe bereits existiert
71 while (rs != null && rs.next())
72                 {
73                     if ( propGroupNewName.equals(rs.getString("PROPGROUP_NAME"))
74                          && ! propGroupId.equals(rs.getString("PROPGROUP_ID")) )
75                     {
76                         noDuplicateExists = false;
77                         break;
78                     }
79                 }
80             }
81
82             // 2x nein - gruppe wird angelegt/geändert
83 if ( noDuplicateExists && nameGiven )
84             {
85                 // neue gruppe wird angelegt
86 if ( newGroup )
87                 {
88                     q = TKDBManager.newQuery(TKDBPropGroupNew.class);
89                     q.setQueryParams( "PROPGROUP_NAME", propGroupNewName );
90                     q.execute();
91                 }
92
93                 // bestehende gruppe wird geändert
94 else
95                 {
96                     q = TKDBManager.newQuery(TKDBPropGroupUpdate.class);
97                     q.setQueryParams( "PROPGROUP_ID", new Integer JavaDoc(propGroupId) );
98                     q.setQueryParams( "PROPGROUP_NAME", propGroupNewName );
99                     q.execute();
100
101                     // Notify listeners registered with group name.
102 ConfigurationManager.getInstance().notifyListeners(propGroupName);
103                 }
104
105                 // Notify listeners registered with *new* group name.
106 ConfigurationManager.getInstance().notifyListeners(propGroupNewName);
107             }
108
109             // finish
110 TKHTMLTemplate t = evt.getPrepHTMLTemplate( "f_co_propgroup.tmpl" );
111
112             // alles ok
113 if ( noDuplicateExists && nameGiven )
114             {
115                 HTMLUtils.fillFrameSet( t, LEFT_FRAME_WIDTH, "CO_PROPGROUP_LIST", "EMPTY" );
116             }
117             // ups, etwas war nicht in ordnung
118 else
119             {
120                 HTMLUtils.fillFrameSet( t, LEFT_FRAME_WIDTH, "CO_PROPGROUP_LIST", "CO_ERROR" );
121                 
122                 // EDIT=1 : bestehende gruppe wurde editiert
123 if ( ! newGroup )
124                 {
125                     t.set("EDIT", "1");
126                 }
127                 
128                 // NONAME=1 : es wurde keine neuer name angegeben
129 if ( ! nameGiven )
130                 {
131                     t.set("NONAME", "1");
132                 }
133             }
134             
135
136             WebManEvent.fillEventsIntoTemplate(evt.getRemoteUser(), t, CUSTOMIZE_PROPERTIES);
137             evt.finishTemplate( t );
138         } catch (Throwable JavaDoc e) {
139             throw WebmanExceptionHandler.getException(e);
140         }
141     }
142
143     public boolean isHandler(TKEvent evt)
144     {
145         return evt.getName().equalsIgnoreCase( "CO_PROPGROUP_UPDATE" );
146     }
147
148 }
149
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