--- loncom/interface/Attic/lonchart.pm 2002/06/04 19:59:34 1.42
+++ loncom/interface/Attic/lonchart.pm 2002/06/05 05:05:38 1.43
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# (Publication Handler
#
-# $Id: lonchart.pm,v 1.42 2002/06/04 19:59:34 stredwic Exp $
+# $Id: lonchart.pm,v 1.43 2002/06/05 05:05:38 stredwic Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -59,95 +59,123 @@ use GDBM_File;
my %hash;
my %CachData;
my @cols;
-my @rowlabels;
-my @students;
-my @PreCol;
my $r;
+my $c;
# ------------------------------------------------------------- Find out status
sub ExtractStudentData {
- my ($index,$coid)=@_;
- my ($sname,$sdom) = split( /\:/, $students[$index] );
- my %result=&Apache::lonnet::dump($coid,$sdom,$sname);
+ my ($name,$coid)=@_;
+ my ($sname,$sdom) = split(/\:/,$name);
my $ResId;
my $Code;
my $Tries;
my $Wrongs;
my %TempHash;
my $Version;
- my $ProbNo;
- my $ProbSolved;
- my $ProbTotal;
- my $LatestVersion;
- my $Str=substr($students[$index].
- ' ',0,14).' ! '.
- substr($rowlabels[$index].
- ' ',0,45).' ! ';
+ my $problemsCorrect;
+ my $problemsSolved;
+ my $totalProblems;
+ my $LatestVersion;
+ my $Str;
+
+ # Handle Student information ------------------------------------------
+ # Handle errors
+# if($CachData{$name.':error'} =~ /environment/) {
+# my $errorMessage = $CachData{$name.':error'};
+# return '| '.$sname.' | '.$sdom.
+# ' | '.$errorMessage.' | ';
+# }
+
+ # Handle user data
+ $Str = ''.$sname.' | '.$sdom;
+ $Str .= ' | '.$CachData{$name.':section'};
+ $Str .= ' | '.$CachData{$name.':id'};
+ $Str .= ' | '.$CachData{$name.':fullname'};
+ $Str .= ' | ';
- my($checkForError)=keys (%result);
- if($checkForError =~ /^(con_lost|error|no_such_host)/i) {
- my $PrTot = sprintf( "%5d", $ProbTotal );
- my $PrSvd = sprintf( "%5d", $ProbSolved );
- $Str .= ' '.''.$PrSvd.' /'.$PrTot.' ';
+ if($CachData{$name.':error'} =~ /course/) {
return $Str;
+# my $errorMessage = 'May have no course data or '.
+# $CachData{$name.':error'};
+# return ''.$sname.' | '.$sdom.
+# ' | '.$errorMessage.' | ';
}
- $ProbNo = 0;
- $ProbTotal = 0;
- $ProbSolved = 0;
+ # Handle problem data ------------------------------------------------
+ $Str .= '';
+ $problemsCorrect = 0;
+ $totalProblems = 0;
+ $problemsSolved = 0;
my $IterationNo = 0;
foreach $ResId (@cols) {
- if ($IterationNo == 0) {$IterationNo++; next;}
- if (!$ResId) {
- my $PrNo = sprintf( "%3d", $ProbNo );
- $Str .= ' '.''.$PrNo.' ';
- $ProbSolved += $ProbNo;
- $ProbNo=0;
+ if ($IterationNo == 0) {
+ # Looks to be skipping start resource
+ $IterationNo++;
+ next;
+ }
+
+ # ResId is 0 for sequences and pages,
+ # please check tracetable for changes
+ if (!$ResId) {
+ my $outputProblemsCorrect = sprintf( "%3d", $problemsCorrect );
+ $Str .= ''.$outputProblemsCorrect.
+ ' | ';
+ $Str .= '';
+ $problemsSolved += $problemsCorrect;
+ $problemsCorrect=0;
next;
}
+
+ # Set $1 and $2
$ResId=~/(\d+)\.(\d+)/;
my $meta=$hash{'src_'.$ResId};
- my $PartNo = 0;
+ my $numberOfParts = 0;
undef %TempHash;
foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
+#----------- Overwrite $1 in next statement ---------------------------------
if ($_=~/^stores\_(\d+)\_tries$/) {
my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
if ( $TempHash{"$Part"} eq '' ) {
$TempHash{"$Part"} = $Part;
- $TempHash{$PartNo}=$Part;
+ $TempHash{$numberOfParts}=$Part;
$TempHash{"$Part.Code"} = ' ';
- $PartNo++;
+ $numberOfParts++;
}
}
}
+#----------- Using $1 and $2 -----------------------------------------------
my $Prob = &Apache::lonnet::symbclean(
&Apache::lonnet::declutter($hash{'map_id_'.$1} ).
'___'.$2.'___'.
&Apache::lonnet::declutter( $hash{'src_'.$ResId} ));
$Code=' ';
$Tries = 0;
- $LatestVersion = $result{"version:$Prob"};
+ $LatestVersion = $CachData{$name.":version:$Prob"};
if ( $LatestVersion ) {
for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
- my $vkeys = $result{"$Version:keys:$Prob"};
+ my $vkeys = $CachData{$name.":$Version:keys:$Prob"};
my @keys = split(/\:/,$vkeys);
- foreach my $Key (@keys) {
+ foreach my $Key (@keys) {
+#---------------------- Changing $1 -------------------------------------------
if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
+#---------------------- Using $1 -----------------------------------------------
my $Part = $1;
- $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
+ $Tries = $CachData{$name.":$Version:$Prob".
+ ":resource.$Part.tries"};
$TempHash{"$Part.Tries"}=($Tries) ? $Tries : 0;
- my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
- if ($Val eq 'correct_by_student'){$Code='*';}
- elsif ($Val eq 'correct_by_override'){$Code = '+';}
- elsif ($Val eq 'incorrect_attempted'){$Code = '.';}
+ my $Val = $CachData{$name.":$Version:$Prob".
+ ":resource.$Part.solved"};
+ if ($Val eq 'correct_by_student') {$Code = '*';}
+ elsif ($Val eq 'correct_by_override') {$Code = '+';}
+ elsif ($Val eq 'incorrect_attempted') {$Code = '.';}
elsif ($Val eq 'incorrect_by_override'){$Code = '-';}
- elsif ($Val eq 'excused'){$Code = 'x';}
- elsif ($Val eq 'ungraded_attempted'){$Code = '#';}
- else {$Code = ' ';}
+ elsif ($Val eq 'excused') {$Code = 'x';}
+ elsif ($Val eq 'ungraded_attempted') {$Code = '#';}
+ else {$Code = ' ';}
$TempHash{"$Part.Code"} = $Code;
}
@@ -157,36 +185,94 @@ sub ExtractStudentData {
$Str.='';
- for ( my $n = 0; $n < $PartNo; $n++ ) {
+ for(my $n = 0; $n < $numberOfParts; $n++) {
my $part = $TempHash{$n};
- my $Code = $TempHash{"$part.Code"};
- if ( $Code eq '*') {
- $ProbNo++;
+ my $code2 = $TempHash{"$part.Code"};
+ if($code2 eq '*') {
+ $problemsCorrect++;
+# !!!!!!!!!!!------------------------- Should 10 not be maxtries? ------------
if (($TempHash{"$part.Tries"}<10) ||
($TempHash{"$part.Tries"} eq '')) {
$TempHash{"$part.Code"}=$TempHash{"$part.Tries"};
}
+ } elsif($code2 eq '+') {
+ $problemsCorrect++;
}
- elsif ( $Code eq '+' ) {$ProbNo++;}
+
$Str .= $TempHash{"$part.Code"};
- if ( $Code ne 'x' ) {$ProbTotal++;}
+
+ if($code2 ne 'x') {
+ $totalProblems++;
+ }
}
$Str.='';
} else {
- for(my $n=0; $n<$PartNo; $n++) {
+ for(my $n=0; $n<$numberOfParts; $n++) {
$Str.=' ';
- $ProbTotal++;
+ $totalProblems++;
}
}
}
- my $PrTot = sprintf( "%5d", $ProbTotal );
- my $PrSvd = sprintf( "%5d", $ProbSolved );
- $Str .= ' '.''.$PrSvd.' /'.$PrTot.' ';
+ $Str .= ''.$problemsSolved.
+ ' / '.$totalProblems.' | ';
- return $Str ;
+ return $Str;
+}
+
+sub CreateForm {
+ my $OpSel1='';
+ my $OpSel2='';
+ my $OpSel3='';
+ my $Status = $ENV{'form.status'};
+ if ( $Status eq 'Any' ) { $OpSel3='selected'; }
+ elsif ($Status eq 'Expired' ) { $OpSel2 = 'selected'; }
+ else { $OpSel1 = 'selected'; }
+
+ my $Ptr = ''."\n";
+ $r->print( $Ptr );
}
+sub CreateTableHeadings {
+ $r->print(' | ');
+ $r->print('| User Name | ');
+ $r->print('Domain | ');
+ $r->print('Section | ');
+ $r->print('PID | ');
+ $r->print('Full Name | ');
+
+ my $ResId;
+ my $IterationNo = 0;
+ foreach $ResId (@cols) {
+ if ($IterationNo == 0) {$IterationNo++; next;}
+ if (!$ResId) {
+# my $PrNo = sprintf( "%3d", $ProbNo );
+# $Str .= 'Chapter '.$PrNo.' | ';
+ $r->print('Chapter '.'0'.' | ');
+ }
+ }
+
+ $r->print('
');
+ $r->rflush();
+
+ return;
+}
# ------------------------------------------------------------ Build page table
@@ -242,6 +328,7 @@ sub usection {
if($checkForError =~ /^(con_lost|error|no_such_host)/i) {
return -1;
}
+
my $cursection='-1';
my $oldsection='-1';
my $status='Expired';
@@ -253,172 +340,287 @@ sub usection {
my ($dummy,$end,$start)=split(/\_/,$value);
my $now=time;
my $notactive=0;
- if ($start) { if ($now<$start) { $notactive=1; } }
- if ($end) { if ($now>$end) { $notactive=1; } }
- if ($notactive == 0) { $status='Active';$cursection=$section;}
- if ($notactive == 1) { $oldsection=$section;}
- }
- }
- if ($status eq $ActiveFlag) {
- if ($cursection eq '-1') { return $oldsection; }
- return $cursection;
- }
- if ($ActiveFlag eq 'Any') {
- if ($cursection eq '-1') { return $oldsection; }
- return $cursection;
+ if ($start) {
+ if($now<$start) {
+ $notactive=1;
+ }
+ }
+ if($end) {
+ if ($now>$end) {
+ $notactive=1;
+ }
+ }
+ if($notactive == 0) {
+ $status='Active';
+ $cursection=$section;
+ }
+ if($notactive == 1) {
+ $oldsection=$section;
+ }
+ }
+ }
+ if($status eq $ActiveFlag) {
+ if($cursection eq '-1') {
+ return $oldsection;
+ }
+ return $cursection;
+ }
+ if($ActiveFlag eq 'Any') {
+ if($cursection eq '-1') {
+ return $oldsection;
+ }
+ return $cursection;
}
return '-1';
}
-sub BuildChart {
-# ----------------------- Get first and last resource, see if there is anything
- my $firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
- my $lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
- if (($firstres) && ($lastres)) {
-# ----------------------------------------------------------------- Render page
- my $cid=$ENV{'request.course.id'};
- my $chome=$ENV{'course.'.$cid.'.home'};
- my ($cdom,$cnum)=split(/\_/,$cid);
-# ---------------------------------------------- Read class list and row labels
- my %classlist=&Apache::lonnet::dump('classlist',$cdom,$cnum);
-
- my($checkForError)=keys (%classlist);
- if($checkForError =~ /^(con_lost|error|no_such_host)/i) {
- $r->print('Could not access course data
');
+sub ProcessFullName {
+ my ($name)=@_;
+ my $Str = '';
+
+ if($CachData{$name.':lastname'} ne '') {
+ $Str .= $CachData{$name.':lastname'}.' ';
+ if($CachData{$name.':generation'} ne '') {
+ $Str .= $CachData{$name.':generation'};
} else {
- my $now=time;
- foreach my $name (sort(keys(%classlist))) {
- my $value=$classlist{$name};
- my ($end,$start)=split(/\:/,$value);
- my $active=1;
- my $Status=$ENV{'form.status'};
- $Status = ($Status) ? $Status : 'Active';
- if ( ( ($end) && $now > $end ) &&
- ( ($Status eq 'Active') ) ) { $active=0; }
- if ( ($Status eq 'Expired') &&
- ($end == 0 || $now < $end) ) { $active=0; }
- if ($active) {
- my $thisindex=$#students+1;
- $students[$thisindex]=$name;
- my ($sname,$sdom)=split(/\:/,$name);
- $PreCol[$thisindex]=$sname.':';
- my $ssec=&usection($sdom,$sname,$cid,$Status);
- if ($ssec==-1) {
- $rowlabels[$thisindex]=
- 'Data not available: '.$name;
- } else {
- my %reply=&Apache::lonnet::idrget($sdom,$sname);
- my %name=&Apache::lonnet::get('environment',
- ['lastname','generation'
- ,'firstname'
- ,'middlename'],
- $sdom,$sname);
- my $name=$name{'lastname'};
- if ($name{'generation'}) {$name.=" $name{generation}";}
- $name.=',';
- if ($name{'firstname'}) {$name.=" $name{firstname}";}
- if ($name{'middlename'}) {$name.=" $name{middlename}";}
- if ($name eq ',') {$name='';}
- #$ssec=(int($ssec)) ? int($ssec) : $ssec;
- my $sec=sprintf('%3s',$ssec);
- $rowlabels[$thisindex]=$sec.' '.$reply{$sname}.' ';
- $PreCol[$thisindex] .= $name.':'.$sec;
- $rowlabels[$thisindex].=$name.' ';
- }
- }
+ chop($Str);
+ }
+ $Str .= ', ';
+ if($CachData{$name.':firstname'} ne '') {
+ $Str .= $CachData{$name.':firstname'}.' ';
+ }
+ if($CachData{$name.':middlename'} ne '') {
+ $Str .= $CachData{$name.':middlename'};
+ } else {
+ chop($Str);
+ if($CachData{$name.'firstname'} eq '') {
+ chop($Str);
}
}
+ } else {
+ if($CachData{$name.':firstname'} ne '') {
+ $Str .= $CachData{$name.':firstname'}.' ';
+ }
+ if($CachData{$name.':middlename'} ne '') {
+ $Str .= $CachData{$name.':middlename'}.' ';
+ }
+ if($CachData{$name.':generation'} ne '') {
+ $Str .= $CachData{$name.':generation'};
+ } else {
+ chop($Str);
+ }
+ }
- my $allstudents=$#students+1;
- $r->print(''.$allstudents.' students
');
- &CreateForm();
- $r->rflush();
+ return $Str;
+}
-# --------------- Find all assessments and put them into some linear-like order
- &tracetable($firstres,'&'.$lastres.'&');
-# ----------------------------------------------------------------- Start table
+sub DownloadStudentInformation {
+ my ($name,$courseID)=@_;
+ my ($studentName,$studentDomain) = split(/\:/,$name);
+ my $checkForError;
+ my $key;
+ my $Status=$CachData{$name.':Status'};
+
+#-----------------------------------------------------------------
+ # Download student environment data, specifically the full name and id.
+ my %studentInformation=&Apache::lonnet::get('environment',
+ ['lastname','generation',
+ 'firstname','middlename',
+ 'id'],
+ $studentDomain,$studentName);
+ if($c->aborted()) {
+ return;
+ }
+ ($checkForError)=keys (%studentInformation);
+ if($checkForError =~ /^(con_lost|error|no_such_host)/i) {
+ $CachData{$name.':error'}=
+ 'Could not download student environment data.';
+# return;
+ $CachData{$name.':lastname'}='';
+ $CachData{$name.':generation'}='';
+ $CachData{$name.':firstname'}='';
+ $CachData{$name.':middlename'}='';
+ $CachData{$name.':fullname'}='';
+ $CachData{$name.':id'}='';
+ } else {
+ $CachData{$name.':lastname'}=$studentInformation{'lastname'};
+ $CachData{$name.':generation'}=$studentInformation{'generation'};
+ $CachData{$name.':firstname'}=$studentInformation{'firstname'};
+ $CachData{$name.':middlename'}=$studentInformation{'middlename'};
+ $CachData{$name.':fullname'}=&ProcessFullName($name);
+ $CachData{$name.':id'}=$studentInformation{'id'};
+ }
- $r->print('');
- my $index;
- for ($index=0;$index<=$#students;$index++) {
- my $Str=&ExtractStudentData($index,$cid);
- $r->print($Str.'
');
- $r->rflush();
- $CachData{$PreCol[$index]}=$Str;
- }
- $r->print('');
+ # Download student course data
+ my %courseData=&Apache::lonnet::dump($courseID,$studentDomain,
+ $studentName);
+ if($c->aborted()) {
+ return;
+ }
+ ($checkForError)=keys (%courseData);
+ if($checkForError =~ /^(con_lost|error|no_such_host)/i) {
+ $CachData{$name.':error'}='Could not download course data.';
+# return;
} else {
- $r->print('Undefined course sequence
');
+ foreach $key (keys (%courseData)) {
+ $CachData{$name.':'.$key}=$courseData{$key};
+ }
+ }
+
+ # Get student's section number
+ my $sec=&usection($studentDomain, $studentName, $courseID, $Status);
+ if($sec != -1) {
+ $CachData{$name.':section'}=sprintf('%3s',$sec);
+ } else {
+ $CachData{$name.':section'}='';
}
+
+ return;
}
-sub CreateForm {
- my $OpSel1='';
- my $OpSel2='';
- my $OpSel3='';
- my $Status = $ENV{'form.status'};
- if ( $Status eq 'Any' ) { $OpSel3='selected'; }
- elsif ($Status eq 'Expired' ) { $OpSel2 = 'selected'; }
- else { $OpSel1 = 'selected'; }
+sub SortStudents {
+# --------------------------------------------------------------- Sort Students
+ my $Pos = $ENV{'form.sort'};
+ my @students = split(/:::/,$CachData{'NamesOfStudents'});
+ my %sortData;
- my $Ptr = ''."\n";
- $r->print( $Ptr );
+ if($Pos eq 'Last Name') {
+ for(my $index=0; $index<$#students+1; $index++) {
+ $sortData{$CachData{$students[$index].':fullname'}}=
+ $students[$index];
+ }
+ } elsif($Pos eq 'Section') {
+ for(my $index=0; $index<$#students+1; $index++) {
+ $sortData{$CachData{$students[$index].':section'}.
+ $students[$index]}=$students[$index];
+ }
+ } else {
+ # Sort by user name
+ for(my $index=0; $index<$#students+1; $index++) {
+ $sortData{$students[$index]}=$students[$index];
+ }
+ }
+
+ my @order = ();
+ foreach my $key (sort keys(%sortData)) {
+ push (@order,$sortData{$key});
+ }
+
+ return @order;
}
-sub CacheChart {
- my %list = ();
- my $count=0;
+sub CollectClasslist {
+# -------------------------------------------------------------- Get class list
+ my $cid=$ENV{'request.course.id'};
+ my $chome=$ENV{'course.'.$cid.'.home'};
+ my ($cdom,$cnum)=split(/\_/,$cid);
+ my %classlist=&Apache::lonnet::dump('classlist',$cdom,$cnum);
+ my @names = ();
- my $Pos = $ENV{'form.sort'};
- if ( $Pos eq 'Last Name' ) {$Pos=1;}
- elsif ( $Pos eq 'Section' ) {$Pos=2;}
- else {$Pos=0;}
+ my($checkForError)=keys (%classlist);
+ if($checkForError =~ /^(con_lost|error|no_such_host)/i) {
+ $r->print('Could not access course data
');
+ push (@names, 'error');
+ return @names;
+ }
+
+# ------------------------------------- Calculate Status and number of students
+ my $now=time;
+ foreach my $name (sort(keys(%classlist))) {
+ my $value=$classlist{$name};
+ my ($end,$start)=split(/\:/,$value);
+ my $active=1;
+ my $Status=$ENV{'form.status'};
+ $Status = ($Status) ? $Status : 'Active';
+ if((($end) && $now > $end) && (($Status eq 'Active'))) {
+ $active=0;
+ }
+ if(($Status eq 'Expired') && ($end == 0 || $now < $end)) {
+ $active=0;
+ }
+ if($active) {
+ push(@names,$name);
+ $CachData{$name.':Status'}=$Status;
+ }
+ }
+
+ $CachData{'NamesOfStudents'}=join(":::",@names);
+
+ return @names;
+}
- foreach my $key( keys %CachData) {
- my @Temp=split(/\:/,$key);
- my $Use = $Temp[$Pos];
- $list{$Use.$key}=$key;
- $count++;
+sub BuildChart {
+# ----------------------- Get first and last resource, see if there is anything
+ my $firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
+ my $lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
+ if (!($firstres) || !($lastres)) {
+ $r->print('Undefined course sequence
');
+ return;
}
- my @order = sort(keys(%list));
+# --------------- Find all assessments and put them into some linear-like order
+ &tracetable($firstres,'&'.$lastres.'&');
- $r->print(''.$count.' students
');
+# ----------------------------------------------------------------- Render page
&CreateForm();
+
+ my $cid=$ENV{'request.course.id'};
+ my $ChartDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
+ "_$ENV{'user.domain'}_$cid\_chart.db";
+ my $isCached = 0;
+ my @students;
+ if ((-e "$ChartDB") && ($ENV{'form.sort'} ne 'Recalculate Chart')) {
+ if (tie(%CachData,'GDBM_File',"$ChartDB",&GDBM_READER,0640)) {
+ $isCached = 1;
+ @students=&SortStudents();
+ } else {
+ $r->print("Unable to tie hash to db file");
+ $r->rflush();
+ return;
+ }
+ } else {
+ if (tie(%CachData,'GDBM_File',$ChartDB,&GDBM_NEWDB,0640)) {
+ $isCached = 0;
+ @students=&CollectClasslist();
+ if($students[0] eq 'error') {
+ return;
+ }
+ } else {
+ $r->print("Unable to tie hash to db file");
+ return;
+ }
+ }
+
+ $r->print(''.($#students+1).' students
');
$r->rflush();
-
- $r->print('');
- for ( my $n; $n < $count; $n++) {
- $r->print($CachData{$list{$order[$n]}}.'
');
- }
- $r->print('');
+
+# ----------------------------------------------------------------- Start table
+ $r->print('');
+# &CreateTableHeadings();
+ my @updateStudentList = ();
+ foreach my $student (@students) {
+ if($c->aborted()) {
+ if($isCached == 0) {
+ $CachData{'NamesOfStudents'}=join(":::",@updateStudentList);
+ }
+ last;
+ }
+ if($isCached == 0) {
+ &DownloadStudentInformation($student,$cid);
+ push (@updateStudentList, $student);
+ }
+ my $Str=&ExtractStudentData($student,$cid);
+ $r->print(''.$Str.'
');
+ }
+ $r->print('
');
+
+ untie(%CachData);
+
+ return;
}
sub Start {
- undef %hash;
- undef %CachData;
- undef @students;
- undef @cols;
- undef @rowlabels;
- undef @PreCol;
-
- $r->print(''.
+ $r->print('<head><title>'.
'LON-CAPA Assessment Chart');
$r->print(''.
''.
@@ -438,34 +640,22 @@ sub Start {
# ------------------------------- This is going to take a while, produce output
$r->rflush();
- my $cid=$ENV{'request.course.id'};
- my $ChartDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
- "_$ENV{'user.domain'}_$cid\_chart.db";
+ &BuildChart();
- if ((-e "$ChartDB") && ($ENV{'form.sort'} ne 'Recalculate Chart')) {
- if (tie(%CachData,'GDBM_File',"$ChartDB",&GDBM_READER,0640)) {
- &CacheChart();
- }
- else {
- $r->print("Unable to tie hash to db file");
- }
- }
- else {
- if (tie(%CachData,'GDBM_File',$ChartDB,&GDBM_WRCREAT,0640)) {
- foreach (keys %CachData) {delete $CachData{$_};}
- &BuildChart();
- }
- else {
- $r->print("Unable to tie hash to db file");
- }
- }
- untie(%CachData);
+ $r->print('');
+
+ return;
}
# ================================================================ Main Handler
sub handler {
+ undef %hash;
+ undef %CachData;
+ undef @cols;
+
$r=shift;
+ $c = $r->connection;
if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
# ------------------------------------------- Set document type for header only
if ($r->header_only) {
@@ -489,8 +679,10 @@ sub handler {
# ---------------------------------------------------------------- Send headers
$r->content_type('text/html');
$r->send_http_header;
+ $r->print('');
&Start();
- $r->print('');
+ $r->print('