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Java > Open Source Codes > de > webman > content > eventhandler > CEContentVersionsHandler


1 package de.webman.content.eventhandler;
2
3 import com.teamkonzept.web.*;
4 import com.teamkonzept.webman.*;
5 import com.teamkonzept.webman.mainint.*;
6 import com.teamkonzept.webman.mainint.db.queries.*;
7 import com.teamkonzept.webman.mainint.events.*;
8 import com.teamkonzept.lib.*;
9 import com.teamkonzept.field.*;
10 import com.teamkonzept.field.db.*;
11 import com.teamkonzept.db.*;
12
13 import de.webman.content.workflow.*;
14 import java.sql.*;
15
16
17 /**
18 * Auflisten aller Versionen eines Contents:
19 *
20 *
21 * @param String event
22 * @author $Author: sebastian $
23 * @version $Revision: 1.10 $
24 */
25 public class CEContentVersionsHandler extends DefaultEventHandler implements ParameterTypes, FrameConstants
26 {
27     private CEContentVersionsHandler()
28     {}
29
30     private static CEContentVersionsHandler instance = new CEContentVersionsHandler();
31
32     public static CEContentVersionsHandler getInstance()
33     {
34         return instance;
35     }
36
37     /**
38         Dieser Handler braucht deutlich weniger Infos als die anderen Handler, die sich
39         mit Versionen befassen, trotzdem in den Cache ???
40         -> Ist andere Datenbankabfrage !!!
41     */
42     public void handleEvent(TKEvent evt) throws TKException
43     {
44         try
45         {
46             CEUtils.checkEvent(evt);
47
48             TKHTMLTemplate t = evt.getPrepHTMLTemplate( "ce_conVersList.tmpl" );
49             
50             ContentContext ceContext = CEUtils.keepCEContext( evt, t );
51
52             // statische Daten der Versionsverwaltung abrufen
53 VersionStatics statics = VersionStatics.setup();
54
55             String JavaDoc action = evt.getParameter(ACTION,evt.getName());
56
57             if (action == null || action.length() == 0 || action.equalsIgnoreCase ("GET"))
58             {
59                     if (ceContext.instanceId.intValue() != -1)
60                     {
61                         TKQuery q = TKDBManager.newQuery(TKDBListContentVersions.class);
62                         q.setQueryParams( "INSTANCE_ID", ceContext.instanceId );
63                         q.execute();
64                         ResultSet rs = q.fetchResultSet();
65                         TKVector vec = new TKVector();
66                         int currentContentId = -1;
67
68                         while (rs.next())
69                         {
70                             TKHashtable tb = new TKHashtable();
71                             vec.addElement (tb);
72
73                             int statusId = rs.getInt("STATUS_ID");
74
75                             String JavaDoc version = rs.getString ("VERSION_ID");
76                             String JavaDoc status = rs.getString ("STATUS");
77                             String JavaDoc info = rs.getString ("INFO");
78                             String JavaDoc author = rs.getString ("AUTHOR");
79                             String JavaDoc date = TKContentAttributeTableData.dateFormat.format(rs.getTimestamp("VERSION_DATE"));
80
81                             // hier kann NULL kommen - > Ergebnis ist 0 (kompaktiert)
82 int contentId = rs.getInt ("CONTENT_ID");
83
84                             VersionStatus desc = (VersionStatus)
85                                 statics.getStatusPool().get (new Integer JavaDoc(statusId));
86                             if (desc.comment) tb.put ("IS_COMMENT",Boolean.TRUE);
87
88                             tb.put ("VERSION_ID",version);
89                             tb.put ("STATUS",status);
90                             tb.put ("INFO",info);
91                             if (author != null) tb.put ("AUTHOR",author);
92                             tb.put ("DATE",date);
93
94                             tb.put ("CURR_CONTENT_ID",new Integer JavaDoc (currentContentId));
95                             tb.put ("CONTENT_ID",new Integer JavaDoc (contentId));
96
97                             if (currentContentId != -1 && currentContentId != contentId)
98                                 tb.put ("NEW_CONTENT", Boolean.TRUE);
99
100                             currentContentId = contentId;
101                         }
102
103                         t.setListIterator (new TKStandardPluginIterator ("CONTENT_VERSIONS","VERSION",
104                             vec,false,t.getListIterator()));
105                     }
106                 WebManEvent.fillEventsIntoTemplate(evt.getRemoteUser(), t, ContextConstants.CONTENT_EDIT);
107                 evt.finishTemplate(t);
108                 return;
109             }
110         }
111         catch (Throwable JavaDoc e)
112         {
113             // TO DO : Analyze Exception !
114 throw WebmanExceptionHandler.getException(e);
115         }
116     }
117
118     public boolean isHandler(TKEvent evt)
119     {
120         return evt.getName().equalsIgnoreCase("CE_CONTENT_VERSIONS");
121     }
122 }
123
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