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Diff for /loncom/interface/loncoursedata.pm between versions 1.122 and 1.123

version 1.122, 2004/03/07 21:42:19 version 1.123, 2004/03/08 16:12:35
Line 1930  sub get_problem_statistics { Line 1930  sub get_problem_statistics {
     my $dbh = &Apache::lonmysql::get_dbh();      my $dbh = &Apache::lonmysql::get_dbh();
     return undef if (! defined($dbh));      return undef if (! defined($dbh));
     #      #
       # Clean out the table
     $dbh->do('DROP TABLE '.$stats_table);  # May return an error      $dbh->do('DROP TABLE '.$stats_table);  # May return an error
     my $request =       my $request = 
         'CREATE TEMPORARY TABLE '.$stats_table.' '.          'CREATE TEMPORARY TABLE '.$stats_table.' '.
         'SELECT a.student_id,a.solved,a.award,a.awarded,a.tries '.          'SELECT a.student_id,a.solved,a.award,a.awarded,a.tries '.
         'FROM '.$performance_table.' AS a ';          'FROM '.$performance_table.' AS a ';
       #
       # See if we need to include some requirements on the students
     if ((defined($Sections) && lc($Sections->[0]) ne 'all') ||       if ((defined($Sections) && lc($Sections->[0]) ne 'all') || 
         (defined($status)   && lc($status)        ne 'any')) {          (defined($status)   && lc($status)        ne 'any')) {
         $request .= 'NATURAL LEFT JOIN '.$student_table.' AS b ';          $request .= 'NATURAL LEFT JOIN '.$student_table.' AS b ';
     }      }
     $request .= ' WHERE a.symb_id='.$symb_id.' AND a.part_id='.$part_id;      $request .= ' WHERE a.symb_id='.$symb_id.' AND a.part_id='.$part_id;
       #
       # Limit the students included to those specified
     if (defined($Sections) && lc($Sections->[0]) ne 'all') {      if (defined($Sections) && lc($Sections->[0]) ne 'all') {
         $request .= ' AND ('.          $request .= ' AND ('.
             join(' OR ', map { "b.section='".$_."'" } @$Sections              join(' OR ', map { "b.section='".$_."'" } @$Sections
Line 1949  sub get_problem_statistics { Line 1954  sub get_problem_statistics {
         $request .= " AND b.status='".$status."'";          $request .= " AND b.status='".$status."'";
     }      }
     #      #
     &Apache::lonnet::logthis('starttime = '.$starttime);      # Limit by starttime and endtime
     my $time_requirements = undef;      my $time_requirements = undef;
     if (defined($starttime)) {      if (defined($starttime)) {
         $time_requirements .= 'a.timestamp>='.$starttime;          $time_requirements .= 'a.timestamp>='.$starttime;
Line 1962  sub get_problem_statistics { Line 1967  sub get_problem_statistics {
     if (defined($time_requirements)) {      if (defined($time_requirements)) {
         $request .= ' AND '.$time_requirements;          $request .= ' AND '.$time_requirements;
     }      }
       #
       # Finally, execute the request to create the temporary table
     $dbh->do($request);      $dbh->do($request);
 #    &Apache::lonnet::logthis('request = '.$/.$request);      #
       # Collect the first suite of statistics
     $request = 'SELECT COUNT(*),SUM(tries),MAX(tries),AVG(tries),STD(tries) '.      $request = 'SELECT COUNT(*),SUM(tries),MAX(tries),AVG(tries),STD(tries) '.
         'FROM '.$stats_table;          'FROM '.$stats_table;
     my ($num,$tries,$mod,$mean,$STD) = &execute_SQL_request      my ($num,$tries,$mod,$mean,$STD) = &execute_SQL_request
         ($dbh,$request);          ($dbh,$request);
 #    &Apache::lonnet::logthis('request = '.$/.$request);  
     $request = 'SELECT SUM(awarded) FROM '.$stats_table;      $request = 'SELECT SUM(awarded) FROM '.$stats_table;
     my ($Solved) = &execute_SQL_request($dbh,$request);      my ($Solved) = &execute_SQL_request($dbh,$request);
 #    &Apache::lonnet::logthis('request = '.$/.$request);  
     $request = 'SELECT SUM(awarded) FROM '.$stats_table.      $request = 'SELECT SUM(awarded) FROM '.$stats_table.
         " WHERE solved='correct_by_override'";          " WHERE solved='correct_by_override'";
 #    &Apache::lonnet::logthis('request = '.$/.$request);  
     my ($solved) = &execute_SQL_request($dbh,$request);      my ($solved) = &execute_SQL_request($dbh,$request);
 #    $Solved = int($Solved);  
 #    $solved = int($solved);  
     #      #
     $num    = 0 if (! defined($num));      $num    = 0 if (! defined($num));
     $tries  = 0 if (! defined($tries));      $tries  = 0 if (! defined($tries));
Line 1986  sub get_problem_statistics { Line 1989  sub get_problem_statistics {
     $Solved = 0 if (! defined($Solved));      $Solved = 0 if (! defined($Solved));
     $solved = 0 if (! defined($solved));      $solved = 0 if (! defined($solved));
     #      #
       # Compute the more complicated statistics
     my $DegOfDiff = 'nan';      my $DegOfDiff = 'nan';
     $DegOfDiff = 1-($Solved)/$tries if ($tries>0);      $DegOfDiff = 1-($Solved)/$tries if ($tries>0);
       #
     my $SKEW = 'nan';      my $SKEW = 'nan';
     my $wrongpercent = 0;      my $wrongpercent = 0;
     if ($num > 0) {      if ($num > 0) {
Line 1998  sub get_problem_statistics { Line 2002  sub get_problem_statistics {
         $wrongpercent=int(10*100*($num-$Solved+$solved)/$num)/10;          $wrongpercent=int(10*100*($num-$Solved+$solved)/$num)/10;
     }      }
     #      #
 #    $dbh->do('DROP TABLE '.$stats_table);  # May return an error      # Drop the temporary table
       $dbh->do('DROP TABLE '.$stats_table);  # May return an error
     #      #
     # Store in metadata      # Store in metadata
     #  
     if ($num) {      if ($num) {
  my %storestats=();   my %storestats=();
           #
         my $urlres=(&Apache::lonnet::decode_symb($symb))[2];          my $urlres=(&Apache::lonnet::decode_symb($symb))[2];
           #
  $storestats{$courseid.'___'.$urlres.'___timestamp'}=time;          $storestats{$courseid.'___'.$urlres.'___timestamp'}=time;       
  $storestats{$courseid.'___'.$urlres.'___stdno'}=$num;   $storestats{$courseid.'___'.$urlres.'___stdno'}=$num;
  $storestats{$courseid.'___'.$urlres.'___avetries'}=$mean;      $storestats{$courseid.'___'.$urlres.'___avetries'}=$mean;   
  $storestats{$courseid.'___'.$urlres.'___difficulty'}=$DegOfDiff;   $storestats{$courseid.'___'.$urlres.'___difficulty'}=$DegOfDiff;
           #
  $urlres=~/^(\w+)\/(\w+)/;    $urlres=~/^(\w+)\/(\w+)/; 
  &Apache::lonnet::put('nohist_resevaldata',\%storestats,$1,$2);    &Apache::lonnet::put('nohist_resevaldata',\%storestats,$1,$2); 
     }      }
     #      #
     # Return result      # Return result
     #  
     return { num_students => $num,      return { num_students => $num,
              tries        => $tries,               tries        => $tries,
              max_tries    => $mod,               max_tries    => $mod,
Line 2042  sub execute_SQL_request { Line 2045  sub execute_SQL_request {
     return ();      return ();
 }  }
   
   
 sub get_student_data {  sub get_student_data {
     my ($students,$courseid) = @_;      my ($students,$courseid) = @_;
     $courseid = $ENV{'request.course.id'} if (! defined($courseid));      $courseid = $ENV{'request.course.id'} if (! defined($courseid));
Removed from v.1.122  
changed lines
  Added in v.1.123

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