second round of public beta bugfixes:

- fixed a bug in navigation between conferences via post links
- fixed the "your post is 'new'" bug (this was actually another bug, in
  postNewMessage())
- some other stuff

src/com/silverwrist/venice/core/impl/TopicUserContextImpl.java

@@ -475,14 +475,29 @@ class TopicUserContextImpl implements TopicContext
 
   public void setUnreadMessages(int count) throws DataException
   {
+    if (logger.isDebugEnabled())
+      logger.debug("[raw] setUnreadMessages(" + count + ") entry");
+
     if (conf.userIsAnonymous())
-      return;  // no-op
+    { // this is effectively a no-op, but log it
+      logger.debug("reject 1: anonymous user");
+      return;
+
+    } // end if
     if (count>(top_message+1))   // constrain count to [0, top_message+1]
       count = top_message + 1;
     else if (count<0)
       count = 0;
     if ((count==unread) || deleted)
-      return; // no-op
+    { // this is effectively a no-op, but log it
+      if (logger.isDebugEnabled())
+	logger.debug("reject 2: count=" + count + ", unread=" + unread + ", deleted=" + deleted);
+      return;
+
+    } // end if
+
+    if (logger.isInfoEnabled())
+      logger.info("[cooked] setUnreadMessages(" + count + ") entry");
 
     int last_msg = top_message - count;
     Connection conn = null;      // pooled database connection
@@ -498,8 +513,11 @@ class TopicUserContextImpl implements TopicContext
 	StringBuffer sql = new StringBuffer("UPDATE topicsettings SET last_message = ");
 	sql.append(last_msg).append(" WHERE topicid = ").append(topicid).append(" AND uid = ");
 	sql.append(conf.realUID()).append(';');
+	if (logger.isDebugEnabled())
+	  logger.debug("SQL: " + sql.toString());
 	if (stmt.executeUpdate(sql.toString())>0)
 	{ // that was all we needed - just save the flag and exit
+	  logger.debug("--> bailed out after update - done with setUnreadMessages{");
 	  conf.touchRead(conn);
 	  unread = count;
 	  return;
@@ -509,9 +527,12 @@ class TopicUserContextImpl implements TopicContext
 	// OK, check: Is the topic still there?!?
 	sql.setLength(0);
 	sql.append("SELECT topicid from topics WHERE topicid = ").append(topicid).append(';');
+	if (logger.isDebugEnabled())
+	  logger.debug("SQL: " + sql.toString());
 	ResultSet rs = stmt.executeQuery(sql.toString());
 	if (!(rs.next()))
 	{ // the topic's been deleted - bail out
+	  logger.debug("--> bailed out because topic is deleted - done with setUnreadMessages{");
 	  makeDeleted();
 	  return;
 
@@ -521,6 +542,8 @@ class TopicUserContextImpl implements TopicContext
 	sql.setLength(0);
 	sql.append("INSERT INTO topicsettings (topicid, uid, last_message) VALUES (").append(topicid);
 	sql.append(", ").append(conf.realUID()).append(", ").append(last_msg).append(");");
+	if (logger.isDebugEnabled())
+	  logger.debug("SQL: " + sql.toString());
 	stmt.executeUpdate(sql.toString());
 	conf.touchRead(conn);
 	unread = count;  // successful completion
@@ -589,6 +612,9 @@ class TopicUserContextImpl implements TopicContext
   public TopicMessageContext postNewMessage(long parent, String pseud, String text)
       throws DataException, AccessError
   {
+    if (logger.isInfoEnabled())
+      logger.info("postNewMessage(" + parent + ", '" + pseud + "',<text>) entry");
+
     if (!(conf.userCanPost()))
     { // they can't post in this topic!
       logger.error("trying to post w/o permission!");
@@ -642,6 +668,8 @@ class TopicUserContextImpl implements TopicContext
       real_pseud = pseud_ch.getValue();
       real_text = text_ch.getValue();
       text_linecount = text_ch.getLines();
+      if (logger.isDebugEnabled())
+	logger.debug("new post has " + text_linecount + " lines");
 
     } // end try
     catch (NotYetFinishedException e)
@@ -691,6 +719,8 @@ class TopicUserContextImpl implements TopicContext
 
 	// Determine what the new post number is.
 	new_post_num = top_message + 1;
+	if (logger.isDebugEnabled())
+	  logger.debug("New post number: " + new_post_num);
 
 	// Add the post "header" to the posts table.
 	StringBuffer sql = new StringBuffer("INSERT INTO posts (parent, topicid, num, linecount, creator_uid, "
@@ -708,6 +738,8 @@ class TopicUserContextImpl implements TopicContext
 	if (!(rs.next()))
 	  throw new InternalStateError("postMessage(): Unable to get new post ID!");
 	new_post_id = rs.getLong(1);
+	if (logger.isDebugEnabled())
+	  logger.debug("New post ID: " + new_post_id);
    
 	// Touch the topic values to reflect the added post.
 	sql.setLength(0);
@@ -727,9 +759,14 @@ class TopicUserContextImpl implements TopicContext
 	conf.touchUpdate(conn,posted_date);
 	conf.touchPost(conn,posted_date);
 
-	// fill in our own local variables to reflect the update
+	// Fill in our own local variables to reflect the update.  This includes the recalculation
+	// of "unread" based on the new value of "top_message".
+        int tmp_last_msg = top_message - unread;
 	top_message = new_post_num;
 	lastupdate = posted_date;
+	unread = top_message - tmp_last_msg;
+
+	logger.debug("message post completed successfully");
 
       } // end try
       finally