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Java > Open Source Codes > com > jcorporate > expresso > services > controller > Log


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64
65 /**
66  * DBLog.java
67  *
68  * Copyright 1999, 2000, 2001 Jcorporate Ltd.
69  */
70 package com.jcorporate.expresso.services.controller;
71
72 import com.jcorporate.expresso.core.controller.Block;
73 import com.jcorporate.expresso.core.controller.ControllerException;
74 import com.jcorporate.expresso.core.controller.ControllerRequest;
75 import com.jcorporate.expresso.core.controller.ControllerResponse;
76 import com.jcorporate.expresso.core.controller.DBController;
77 import com.jcorporate.expresso.core.controller.Output;
78 import com.jcorporate.expresso.core.controller.State;
79 import com.jcorporate.expresso.core.controller.Transition;
80 import com.jcorporate.expresso.core.dbobj.SecuredDBObject;
81 import com.jcorporate.expresso.core.logging.LogException;
82 import com.jcorporate.expresso.core.logging.LogHandler;
83 import com.jcorporate.expresso.services.dbobj.LogEntry;
84
85 import java.util.Iterator JavaDoc;
86
87
88 /**
89  * Controller for administering and viewing the database and text log
90  *
91  * @author Michael Nash
92  * @version $Revision: 1.13 $ $Date: 2004/11/17 20:48:17 $
93  */
94 public class Log
95         extends DBController {
96     private int maxLines = 100;
97
98     /**
99      * Our constructor "declares" what states we handle
100      */
101     public Log() {
102         super();
103
104         State show = new State("show", "Show Text Log");
105         addState(show);
106         setInitialState("show");
107
108         State showdb = new State("showDb", "Show Database Log");
109         addState(showdb);
110
111         State clear = new State("clear", "Clear Text Log");
112         addState(clear);
113         setInitialState("clear");
114
115         State cleardb = new State("clearDb", "Clear Database Log");
116         addState(cleardb);
117         setInitialState("clearDb");
118         this.setSchema(com.jcorporate.expresso.core.ExpressoSchema.class);
119     } /* Status() */
120
121
122     /**
123      * Display the contents of the current server log to the user
124      *
125      * @param request Standard request object
126      * @param response Standard reponse object
127      * @throws ControllerException upon error
128      */
129     public void runShowDbState(ControllerRequest request,
130                                ControllerResponse response)
131             throws ControllerException {
132         try {
133             LogHandler.flush();
134         } catch (LogException le) {
135             throw new ControllerException(le);
136         }
137
138         Block logTable = new Block();
139         response.addBlock(logTable);
140         logTable.setAttribute("table", "Y");
141         logTable.setDescription("Current Log");
142         logTable.setAttribute("header-row", "Time|Message|Object|UserId|Job");
143
144         try {
145             LogEntry logEntryList = new LogEntry(SecuredDBObject.SYSTEM_ACCOUNT);
146             logEntryList.setDataContext(request.getDataContext());
147             logEntryList.setMaxRecords(maxLines + 1);
148
149             LogEntry oneEntry = null;
150             Iterator JavaDoc e = logEntryList.searchAndRetrieveList("LogTime DESC").iterator();
151             int lineCount = 0;
152             Block oneRow = null;
153             Output oneCell = null;
154
155             while (e.hasNext()) {
156                 oneEntry = (LogEntry) e.next();
157                 oneRow = new Block("log row");
158                 oneRow.setAttribute("row", "Y");
159                 logTable.add(oneRow);
160                 oneCell = new Output(oneEntry.getField("LogTime"));
161                 oneRow.add(oneCell);
162                 oneCell = new Output(oneEntry.getField("MessageText"));
163                 oneRow.add(oneCell);
164                 oneCell = new Output(oneEntry.getField("ObjectName"));
165                 oneRow.add(oneCell);
166                 oneCell = new Output(oneEntry.getField("ExpUid"));
167                 oneRow.add(oneCell);
168                 oneCell = new Output(oneEntry.getField("JobNumber"));
169                 oneRow.add(oneCell);
170                 lineCount++;
171
172                 if (lineCount >= maxLines) {
173                     break;
174                 }
175             } /* while more elements */
176
177             if (lineCount == 0) {
178                 Output none = new Output("none", "No entries in the log");
179                 response.add(none);
180             }
181             //out.println("</table></body></html>");
182 if (lineCount >= maxLines) {
183                 Output disp = new Output("disp",
184                         "Display stopped at " + maxLines +
185                         " lines.");
186                 response.add(disp);
187             }
188         } catch (Exception JavaDoc ioe) {
189             throw new ControllerException(ioe);
190         }
191
192         response.addTransition(new Transition("clearDb", this));
193         response.addTransition(new Transition("show", this));
194         response.addTransition(new Transition("clear", this));
195     } /* */
196
197
198     /**
199      * @return java.lang.String The Title of the controller
200      */
201     public String JavaDoc getTitle() {
202         return ("Manage System Logs");
203     } /* getTitle() */
204
205 } /* DBLog */
206
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