RSS for replies (conflicts resolved by maxcom)

src/ru/org/linux/spring/AbstractRomeView.java

@@ -0,0 +1,110 @@
+/*
+ * Copyright 1998-2009 Linux.org.ru
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package ru.org.linux.spring;
+
+import java.util.Map;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import com.sun.syndication.feed.synd.SyndFeed;
+import com.sun.syndication.feed.synd.SyndFeedImpl;
+import com.sun.syndication.io.SyndFeedOutput;
+import org.apache.commons.lang.StringUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.springframework.web.servlet.view.AbstractView;
+
+/**
+ * User: rsvato
+ * Date: Jun 1, 2009
+ * Time: 3:20:02 PM
+ */
+public abstract class AbstractRomeView extends AbstractView {
+  private Map<String,String> contentTypes;
+  private Map<String,String> feedTypes;
+  private Integer defaultCount;
+  private String defaultType;
+  private Integer minimalCount;
+  private Integer maximalCount;
+
+  private static final Log log = LogFactory.getLog(AbstractRomeView.class);
+
+  public Map<String, String> getContentTypes() {
+    return contentTypes;
+  }
+
+  public void setContentTypes(Map<String, String> contentTypes) {
+    this.contentTypes = contentTypes;
+  }
+
+  public Map<String, String> getFeedTypes() {
+    return feedTypes;
+  }
+
+  public void setFeedTypes(Map<String, String> feedTypes) {
+    this.feedTypes = feedTypes;
+  }
+
+  public Integer getDefaultCount() {
+    return defaultCount;
+  }
+
+  public void setDefaultCount(Integer defaultCount) {
+    this.defaultCount = defaultCount;
+  }
+
+  protected void renderMergedOutputModel(Map model, HttpServletRequest request,
+                                         HttpServletResponse response) throws Exception {
+    SyndFeed feed = new SyndFeedImpl();
+    feed.setEncoding("utf-8");
+    String feedType = (String) model.get("feed-type");
+    if (StringUtils.isEmpty(feedType)){
+      feedType = "rss";
+    }
+    feed.setFeedType(feedTypes.get(feedType));
+    createFeed(feed, model);
+    response.setContentType(contentTypes.get(feedType));
+    response.setCharacterEncoding("UTF-8");
+    SyndFeedOutput output = new SyndFeedOutput();
+    output.output(feed, response.getWriter());
+  }
+
+  protected abstract void createFeed(SyndFeed feed, Map model);
+
+  public Integer getMaximalCount() {
+    return maximalCount;
+  }
+
+  public void setMaximalCount(Integer maximalCount) {
+    this.maximalCount = maximalCount;
+  }
+
+  public Integer getMinimalCount() {
+    return minimalCount;
+  }
+
+  public void setMinimalCount(Integer minimalCount) {
+    this.minimalCount = minimalCount;
+  }
+
+  public String getDefaultType() {
+    return defaultType;
+  }
+
+  public void setDefaultType(String defaultType) {
+    this.defaultType = defaultType;
+  }
+}

src/ru/org/linux/spring/ReplyFeedView.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright 1998-2009 Linux.org.ru
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package ru.org.linux.spring;
+
+import java.sql.Timestamp;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.Map;
+
+import com.sun.syndication.feed.synd.SyndEntry;
+import com.sun.syndication.feed.synd.SyndEntryImpl;
+import com.sun.syndication.feed.synd.SyndFeed;
+
+/**
+ * User: rsvato
+ * Date: Jun 1, 2009
+ * Time: 3:21:53 PM
+ */
+public class ReplyFeedView extends AbstractRomeView {
+  protected void createFeed(SyndFeed feed, Map model) {
+    @SuppressWarnings("unchecked")
+    List<ShowRepliesController.MyTopicsListItem> list = (List<ShowRepliesController.MyTopicsListItem>) model.get("topicsList");
+    final String s = "Последние 30 ответов на комментарии пользователя " + String.valueOf(model.get("nick"));
+    feed.setTitle(s);
+    feed.setLink("http://www.linux.org.ru");
+    feed.setDescription(s);
+    Date lastModified = new Date();
+    if (!list.isEmpty()) {
+      final Timestamp timestamp = list.get(0).getLastmod();
+      lastModified = new Date(timestamp.getTime());
+    }
+    feed.setPublishedDate(lastModified);
+    List<SyndEntry> entries = new ArrayList<SyndEntry>();
+    feed.setEntries(entries);
+    for (ShowRepliesController.MyTopicsListItem item : list) {
+      SyndEntry feedEntry = new SyndEntryImpl();
+      feedEntry.setPublishedDate(new Date(item.getLastmod().getTime()));
+      feedEntry.setTitle(item.getSubj());
+      feedEntry.setLink(String.format("http://www.linux.org.ru/jump-message.jsp?msgid=%s&cid=%s",
+        String.valueOf(item.getMsgid()), String.valueOf(item.getCid())));
+      entries.add(feedEntry);
+    }
+  }
+}

src/ru/org/linux/spring/ShowRepliesController.java

@@ -23,6 +23,7 @@
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import com.danga.MemCached.MemCachedClient;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
@@ -35,6 +36,10 @@
 
 @Controller
 public class ShowRepliesController {
+
+  @Autowired
+  private ReplyFeedView feedView;
+
   @RequestMapping("/show-replies.jsp")
   public ModelAndView showReplies(
     HttpServletRequest request,
@@ -118,7 +123,15 @@ public ModelAndView showReplies(
 
     params.put("topicsList", list);
 
-    return new ModelAndView("show-replies", params);
+    final ModelAndView result =  new ModelAndView("show-replies", params);
+    if (request.getParameter("output") != null){
+      result.addObject("feed-type", "rss");
+      if ("atom".equals(request.getParameter("output"))){
+        result.addObject("feed-type", "atom");
+      }
+      result.setView(feedView);
+    }
+    return result;
   }
 
   public static class MyTopicsListItem extends TopicsListItem {

web/WEB-INF/feeds.properties

@@ -0,0 +1,19 @@
+#
+# Copyright 1998-2009 Linux.org.ru
+#    Licensed under the Apache License, Version 2.0 (the "License");
+#    you may not use this file except in compliance with the License.
+#    You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS,
+#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#    See the License for the specific language governing permissions and
+#    limitations under the License.
+#
+
+feeds.defaultType=rss
+feeds.defaultCount=20
+feeds.minimalCount=10
+feeds.maximalCount=30

web/WEB-INF/jsp/show-replies.jsp

@@ -38,6 +38,8 @@
   ответов на комментарии пользователя ${nick}
 </c:set>
 <title>${title}</title>
+<LINK REL="alternate" TITLE="Comments RSS" HREF="show-replies.jsp?output=rss&amp;nick=${nick}" TYPE="application/rss+xml"/>
+<LINK REL="alternate" TITLE="Comments Atom" HREF="show-replies.jsp?output=atom&amp;nick=${nick}" TYPE="application/rss+atom"/>
 <jsp:include page="/WEB-INF/jsp/header.jsp"/>
 <h1>${title}</h1>
 

web/WEB-INF/springapp-servlet.xml

@@ -54,4 +54,29 @@
         <!-- one of the properties available; the maximum file size in bytes -->
         <property name="maxUploadSize" value="600000"/>
     </bean>
-</beans>
+
+    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
+            id="feedConfigurer">
+        <property name="location" value="/WEB-INF/feeds.properties"/>
+    </bean>
+
+    <bean id="absractRomeView" class="ru.org.linux.spring.AbstractRomeView" abstract="true">
+        <property name="contentTypes">
+            <map>
+                <entry key="rss" value="application/rss+xml"/>
+                <entry key="atom" value="application/atom+xml"/>
+            </map>
+        </property>
+        <property name="feedTypes">
+            <map>
+                <entry key="rss" value="rss_2.0"/>
+                <entry key="atom" value="atom_1.0"/>
+            </map>
+        </property>
+        <property name="defaultType" value="${feeds.defaultType}"/>
+        <property name="defaultCount" value="${feeds.defaultCount}"/>
+        <property name="minimalCount" value="${feeds.minimalCount}"/>
+        <property name="maximalCount" value="${feeds.maximalCount}"/>
+    </bean>
+    <bean id="replyFeed" class="ru.org.linux.spring.ReplyFeedView" parent="absractRomeView" scope="prototype"/>
+</beans>