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1 package org.tigris.scarab.screens;
2
3
48
49 import java.io.Writer  ;
50
51 import javax.servlet.http.HttpServletResponse ;
52
53 import org.apache.fulcrum.parser.ParameterParser;
54 import org.apache.torque.TorqueException;
55 import org.apache.torque.om.NumberKey;
56 import org.apache.turbine.RunData;
57 import org.apache.turbine.TemplateContext;
58 import org.apache.turbine.TemplateScreen;
59 import org.tigris.scarab.feeds.Feed;
60 import org.tigris.scarab.feeds.IssueFeed;
61 import org.tigris.scarab.feeds.QueryFeed;
62 import org.tigris.scarab.om.Issue;
63 import org.tigris.scarab.om.IssueManager;
64 import org.tigris.scarab.om.Query;
65 import org.tigris.scarab.om.QueryManager;
66 import org.tigris.scarab.om.ScarabUser;
67 import org.tigris.scarab.om.ScarabUserManager;
68 import org.tigris.scarab.tools.ScarabLocalizationTool;
69 import org.tigris.scarab.tools.ScarabRequestTool;
70 import org.tigris.scarab.tools.ScarabToolManager;
71 import org.tigris.scarab.util.Log;
72 import org.tigris.scarab.util.ScarabConstants;
73 import org.tigris.scarab.util.ScarabLink;
74
75 import com.sun.syndication.feed.synd.SyndFeed;
76 import com.sun.syndication.io.FeedException;
77 import com.sun.syndication.io.SyndFeedOutput;
78
79
86 public class RSSDataExport extends TemplateScreen {
87 private static final String DEFAULT_FEED_FORMAT = "atom_0.3";
88
89 private static final String MIME_TYPE = "application/xml; charset=UTF-8";
90
91 private static final String COULD_NOT_GENERATE_FEED_ERROR = "Could not generate feed";
92
93 private static final String COULD_NOT_GENERATE_FEED_ERROR_DATABASE = "Could not retrive data successfully";
94
95 public static final String QUERY_ID_KEY = "queryId";
96 public static final String ISSUE_ID_KEY = "issueId";
97
98 public static final String USER_ID_KEY = "userId";
99
100 public static final String FEED_TYPE_KEY = "feedType";
101 public static final String FEED_FORMAT_KEY = "type";
102
103
108 public void doBuildTemplate(RunData data, TemplateContext context)
109 throws Exception {
110 super.doBuildTemplate(data, context);
111
112 data.getResponse().setContentType(MIME_TYPE);
113
114 data.setTarget(null);
116
117 Writer writer = data.getResponse().getWriter();
118
119 try {
120 ParameterParser parser = data.getParameters();
121
122
123
124 String feedType = parser.getString(FEED_TYPE_KEY);
125 String feedFormat = parser.getString(FEED_FORMAT_KEY);
126
127 ScarabLink scarabLink= getScarabLinkTool(context);
128 ScarabRequestTool scarabRequestTool= getScarabRequestTool(context);
129
130
131
132 Feed feedSource = null;
133 ScarabToolManager scarabToolManager = new ScarabToolManager(getLocalizationTool(context));
134 if (feedType.equals("QueryFeed")){
135
136 long queryId = parser.getLong(QUERY_ID_KEY);
137 long userId = parser.getLong(USER_ID_KEY);
138 if(queryId==0){
139 throw new IllegalArgumentException ("Query ID is missing. Should be appended like: /queryId/xxx");
140 }
141 if(userId==0){
142 throw new IllegalArgumentException ("User ID is missing. Should be appended like: /userId/xxx");
143 }
144 Query query = QueryManager.getInstance(new Long (queryId));
145 ScarabUser user1 = ScarabUserManager.getInstance(new NumberKey(userId), false);
146 feedSource = new QueryFeed(query,user1,scarabToolManager,scarabLink);
147 }
148 else if (feedType.equals("IssueFeed")){
149 String issueId = parser.getString(ISSUE_ID_KEY);
150 if(issueId.equals("")){
151 throw new IllegalArgumentException ("Issue ID is missing. Should be appended like: /issueId/xxx");
152 }
153 Issue issue = IssueManager.getIssueById(issueId);
154 feedSource = new IssueFeed(issue,scarabLink,scarabToolManager);
155 }
156 else {
157 throw new Exception ("Couldn't find feed for type:" + feedType);
158 }
159 SyndFeed feed = feedSource.getFeed();
160
161 feedFormat = (feedFormat!=null) ? feedFormat : DEFAULT_FEED_FORMAT;
162 feed.setFeedType(feedFormat);
163
164
165 SyndFeedOutput output = new SyndFeedOutput();
166 output.output(feed,writer);
167 }
168 catch(IllegalArgumentException iae){
169 String msg = COULD_NOT_GENERATE_FEED_ERROR + ": " + iae.getMessage();
170 Log.get().error(msg,iae);
171 data.getResponse().sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,msg);
172 }
173 catch(TorqueException te){
174 String msg = COULD_NOT_GENERATE_FEED_ERROR_DATABASE;
175 Log.get().error(msg,te);
176 data.getResponse().sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,msg);
177 }
178 catch (FeedException ex) {
179 String msg = COULD_NOT_GENERATE_FEED_ERROR;
180 Log.get().error(msg,ex);
181 data.getResponse().sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,msg);
182 }
183 catch (Exception e) {
184 String msg = COULD_NOT_GENERATE_FEED_ERROR;
185 Log.get().error(msg,e);
186 data.getResponse().sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,msg);
187 }
188 }
189
190
193 protected final ScarabLocalizationTool
194 getLocalizationTool(TemplateContext context)
195 {
196 return (ScarabLocalizationTool)
197 context.get(ScarabConstants.LOCALIZATION_TOOL);
198 }
199
200
203 public ScarabRequestTool getScarabRequestTool(TemplateContext context)
204 {
205 return (ScarabRequestTool)context
206 .get(ScarabConstants.SCARAB_REQUEST_TOOL);
207 }
208
209
212 public ScarabLink getScarabLinkTool(TemplateContext context)
213 {
214 return (ScarabLink)context
215 .get(ScarabConstants.SCARAB_LINK_TOOL);
216 }
217 } |
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