--- loncom/interface/loncoursedata.pm	2003/06/16 15:55:27	1.77
+++ loncom/interface/loncoursedata.pm	2003/09/09 18:46:28	1.86
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: loncoursedata.pm,v 1.77 2003/06/16 15:55:27 matthew Exp $
+# $Id: loncoursedata.pm,v 1.86 2003/09/09 18:46:28 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -104,8 +104,7 @@ sub get_sequence_assessment_data {
     my $fn=$ENV{'request.course.fn'};
     ##
     ## use navmaps
-    my $navmap = Apache::lonnavmaps::navmap->new($fn.".db",
-                                                 $fn."_parms.db",1,0);
+    my $navmap = Apache::lonnavmaps::navmap->new();
     if (!defined($navmap)) {
         return 'Can not open Coursemap';
     }
@@ -143,16 +142,29 @@ sub get_sequence_assessment_data {
     #
     # We need to keep track of which sequences contain homework problems
     # 
+    my $previous_too;
     my $previous;
     while (scalar(@Nested_Sequences)) {
+        $previous_too = $previous;
         $previous = $curRes;
         $curRes = $iterator->next();
         my $currentmap = $Nested_Sequences[-1]; # Last one on the stack
         if ($curRes == $iterator->BEGIN_MAP()) {
+            if (! ref($previous)) {
+                $previous = $previous_too;
+            }
+            if (! ref($previous)) {
+                next;
+            }
             # get the map itself, instead of BEGIN_MAP
             $title = $previous->title();
+            $title =~ s/\:/\&\#058;/g;
             $symb  = $previous->symb();
             $src   = $previous->src();
+            # pick up the filename if there is no title available
+            if (! defined($title) || $title eq '') {
+                ($title) = ($src=~/\/([^\/]*)$/);
+            }
             $randompick = $previous->randompick();
             my $newmap = { title    => $title,
                            src      => $src,
@@ -175,6 +187,7 @@ sub get_sequence_assessment_data {
         next if (! $curRes->is_problem());# && !$curRes->randomout);
         # Okay, from here on out we only deal with assessments
         $title = $curRes->title();
+        $title =~ s/\:/\&\#058;/g;
         $symb  = $curRes->symb();
         $src   = $curRes->src();
         my $parts = $curRes->parts();
@@ -513,6 +526,8 @@ sub init_dbs {
                     { name => 'student',
                       type => 'VARCHAR(100)',
                       restrictions => 'NOT NULL'},
+                    { name => 'classification',
+                      type => 'varchar(100)', },
                     ],
         'PRIMARY KEY' => ['student (100)'],
         'KEY' => [{ columns => ['student_id']},],
@@ -830,7 +845,7 @@ sub get_student_id {
         $have_read_student_table = 1;
     }
     if (! exists($ids_by_student{$student})) {
-        &Apache::lonmysql::store_row($student_table,[undef,$student]);
+        &Apache::lonmysql::store_row($student_table,[undef,$student,undef]);
         undef(%ids_by_student);
         my @Result = &Apache::lonmysql::get_rows($student_table);
         foreach (@Result) {
@@ -908,7 +923,7 @@ sub update_student_data {
                                  $sname.':'.$sdom.' in course '.$courseid.
                                  ':'.$tmp[0]);
         $returnstatus = 'error getting data';
-        return $returnstatus;
+        return ($returnstatus,undef);
     }
     if (scalar(@tmp) < 1) {
         return ('no data',undef);
@@ -932,7 +947,7 @@ sub update_student_data {
     my $num_parameters = 0;
     my $store_performance_command = 'INSERT INTO '.$performance_table.
         ' VALUES '."\n";
-    return 'error' if (! defined($dbh));
+    return ('error',undef) if (! defined($dbh));
     while (my ($current_symb,$param_hash) = each(%student_data)) {
         #
         # make sure the symb is set up properly
@@ -986,14 +1001,14 @@ sub update_student_data {
         &Apache::lonnet::logthis(' bigass insert error:'.$dbh->errstr());
         &Apache::lonnet::logthis('command = '.$store_parameters_command);
         $returnstatus = 'error: unable to insert parameters into database';
-        return $returnstatus,\%student_data;
+        return ($returnstatus,\%student_data);
     }
     $dbh->do($store_performance_command);
     if ($dbh->err()) {
         &Apache::lonnet::logthis(' bigass insert error:'.$dbh->errstr());
         &Apache::lonnet::logthis('command = '.$store_performance_command);
         $returnstatus = 'error: unable to insert performance into database';
-        return $returnstatus,\%student_data;
+        return ($returnstatus,\%student_data);
     }
     $elapsed += Time::HiRes::time - $start;
     #
@@ -1049,7 +1064,7 @@ sub ensure_current_data {
         !$found_student     || !$found_part   ||
         !$found_performance || !$found_parameters) {
         if (&init_dbs($courseid)) {
-            return 'error';
+            return ('error',undef);
         }
     }
     #
@@ -1217,13 +1232,12 @@ sub get_current_state {
 #        }
 #    }
     #
-    if (defined($data)) {
-        if (defined($symb)) {
-            return %{$data->{$symb}};
-        } else {
-            return %$data;
-        }
-    } elsif ($status eq 'no data') {
+    if (defined($data) && defined($symb) && ref($data->{$symb})) {
+        return %{$data->{$symb}};
+    } elsif (defined($data) && ! defined($symb) && ref($data)) {
+        return %$data;
+    } 
+    if ($status eq 'no data') {
         return ();
     } else {
         if ($status ne 'okay' && $status ne '') {
@@ -1364,6 +1378,25 @@ sub get_problem_statistics {
     }
     #
     $dbh->do('DROP TABLE '.$stats_table);  # May return an error
+    #
+    # Store in metadata
+    #
+    if ($num) {
+	my %storestats=();
+
+        my $urlres=(&Apache::lonnet::decode_symb($symb))[2];
+
+	$storestats{$courseid.'___'.$urlres.'___timestamp'}=time;       
+	$storestats{$courseid.'___'.$urlres.'___stdno'}=$num;
+	$storestats{$courseid.'___'.$urlres.'___avetries'}=$mean;	   
+	$storestats{$courseid.'___'.$urlres.'___difficulty'}=$DegOfDiff;
+
+	$urlres=~/^(\w+)\/(\w+)/; 
+	&Apache::lonnet::put('nohist_resevaldata',\%storestats,$1,$2); 
+    }
+    #
+    # Return result
+    #
     return { num_students => $num,
              tries        => $tries,
              max_tries    => $mod,
@@ -1373,7 +1406,7 @@ sub get_problem_statistics {
              num_solved   => $Solved,
              num_override => $solved,
              per_wrong    => $wrongpercent,
-             deg_of_diff  => $DegOfDiff }
+             deg_of_diff  => $DegOfDiff };
 }
 
 sub execute_SQL_request {