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version 1.36, 2002/10/16 13:43:34
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version 1.71, 2003/05/19 15:44:15
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| # The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
| # (Publication Handler |
|
| # |
# |
| # $Id$ |
# $Id$ |
| # |
# |
|
Line 53 use strict;
|
Line 52 use strict;
|
| use Apache::Constants qw(:common :http); |
use Apache::Constants qw(:common :http); |
| use Apache::lonnet(); |
use Apache::lonnet(); |
| use Apache::lonhtmlcommon; |
use Apache::lonhtmlcommon; |
| |
use Time::HiRes; |
| |
use Apache::lonmysql; |
| use HTML::TokeParser; |
use HTML::TokeParser; |
| use GDBM_File; |
use GDBM_File; |
| |
|
|
Line 65 and/or itself.
|
Line 66 and/or itself.
|
| |
|
| =cut |
=cut |
| |
|
| # ----- DOWNLOAD INFORMATION ------------------------------------------- |
#################################################### |
| |
#################################################### |
| |
|
| =pod |
=pod |
| |
|
| =item &DownloadClasslist() |
=item &get_sequence_assessment_data() |
| |
|
| Collects lastname, generation, middlename, firstname, PID, and section for each |
AT THIS TIME THE USE OF THIS FUNCTION IS *NOT* RECOMMENDED |
| student from their environment database. The section data is also download, though |
|
| it is in a rough format, and is processed later. The list of students is built from |
|
| collecting a classlist for the course that is to be displayed. Once the classlist |
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| has been downloaded, its date stamp is recorded. Unless the datestamp for the |
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| class database is reset or is modified, this data will not be downloaded again. |
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| Also, there was talk about putting the fullname and section |
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| and perhaps other pieces of data into the classlist file. This would |
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| reduce the number of different file accesses and reduce the amount of |
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| processing on this side. |
|
| |
|
| =over 4 |
Use lonnavmaps to build a data structure describing the order and |
| |
assessment contents of each sequence in the current course. |
| Input: $courseID, $lastDownloadTime, $c |
|
| |
|
| $courseID: The id of the course |
The returned structure is a hash reference. |
| |
|
| $lastDownloadTime: This is the date stamp for when this information was |
{ title => 'title', |
| last gathered. If it is set to Not downloaded, it will gather the data |
symb => 'symb', |
| again, though it currently does not remove the old data. |
src => '/s/o/u/r/c/e', |
| |
type => (container|assessment), |
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num_assess => 2, # only for container |
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parts => [11,13,15], # only for assessment |
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response_ids => [12,14,16], # only for assessment |
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contents => [........] # only for container |
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} |
| |
|
| $c: The connection class that can determine if the browser has aborted. It |
$hash->{'contents'} is a reference to an array of hashes of the same structure. |
| is used to short circuit this function so that it does not continue to |
|
| get information when there is no need. |
|
| |
|
| Output: \%classlist |
Also returned are array references to the sequences and assessments contained |
| |
in the course. |
| |
|
| \%classlist: A pointer to a hash containing the following data: |
|
| |
|
| -A list of student name:domain (as keys) (known below as $name) |
=cut |
| |
|
| -A hash pointer for each student containing lastname, generation, firstname, |
#################################################### |
| middlename, and PID : Key is $name.studentInformation |
#################################################### |
| |
sub get_sequence_assessment_data { |
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my $fn=$ENV{'request.course.fn'}; |
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## |
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## use navmaps |
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my $navmap = Apache::lonnavmaps::navmap->new($fn.".db", |
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$fn."_parms.db",1,0); |
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if (!defined($navmap)) { |
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return 'Can not open Coursemap'; |
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} |
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my $iterator = $navmap->getIterator(undef, undef, undef, 1); |
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my $curRes = $iterator->next(); # Top level sequence |
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## |
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## Prime the pump |
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## |
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## We are going to loop until we run out of sequences/pages to explore for |
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## resources. This means we have to start out with something to look |
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## at. |
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my $title = $ENV{'course.'.$ENV{'request.course.id'}.'.description'}; |
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my $symb = 'top'; |
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my $src = 'not applicable'; |
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# |
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my @Sequences; |
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my @Assessments; |
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my @Nested_Sequences = (); # Stack of sequences, keeps track of depth |
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my $top = { title => $title, |
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src => $src, |
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symb => $symb, |
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type => 'container', |
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num_assess => 0, |
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num_assess_parts => 0, |
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contents => [], }; |
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push (@Sequences,$top); |
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push (@Nested_Sequences, $top); |
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# |
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# We need to keep track of which sequences contain homework problems |
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# |
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my $previous; |
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while (scalar(@Nested_Sequences)) { |
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$previous = $curRes; |
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$curRes = $iterator->next(); |
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my $currentmap = $Nested_Sequences[-1]; # Last one on the stack |
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if ($curRes == $iterator->BEGIN_MAP()) { |
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# get the map itself, instead of BEGIN_MAP |
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$title = $previous->title(); |
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$symb = $previous->symb(); |
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$src = $previous->src(); |
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my $newmap = { title => $title, |
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src => $src, |
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symb => $symb, |
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type => 'container', |
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num_assess => 0, |
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contents => [], |
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}; |
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push (@{$currentmap->{'contents'}},$newmap); # this is permanent |
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push (@Sequences,$newmap); |
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push (@Nested_Sequences, $newmap); # this is a stack |
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next; |
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} |
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if ($curRes == $iterator->END_MAP()) { |
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pop(@Nested_Sequences); |
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next; |
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} |
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next if (! ref($curRes)); |
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next if (! $curRes->is_problem());# && !$curRes->randomout); |
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# Okay, from here on out we only deal with assessments |
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$title = $curRes->title(); |
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$symb = $curRes->symb(); |
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$src = $curRes->src(); |
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my $parts = $curRes->parts(); |
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my $assessment = { title => $title, |
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src => $src, |
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symb => $symb, |
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type => 'assessment', |
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parts => $parts, |
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num_parts => scalar(@$parts), |
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}; |
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push(@Assessments,$assessment); |
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push(@{$currentmap->{'contents'}},$assessment); |
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$currentmap->{'num_assess'}++; |
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$currentmap->{'num_assess_parts'}+= scalar(@$parts); |
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} |
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$navmap->untieHashes(); |
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return ($top,\@Sequences,\@Assessments); |
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} |
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|
| -A hash pointer to each students section data : Key is $name.section |
sub LoadDiscussion { |
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my ($courseID)=@_; |
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my %Discuss=(); |
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my %contrib=&Apache::lonnet::dump( |
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$courseID, |
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$ENV{'course.'.$courseID.'.domain'}, |
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$ENV{'course.'.$courseID.'.num'}); |
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|
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#my %contrib=&DownloadCourseInformation($name, $courseID, 0); |
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|
| -If there was an error in dump, it will be returned in the hash. See |
foreach my $temp(keys %contrib) { |
| the error codes for dump in lonnet. Also, an error key will be |
if ($temp=~/^version/) { |
| generated if an abort occurs. |
my $ver=$contrib{$temp}; |
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my ($dummy,$prb)=split(':',$temp); |
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for (my $idx=1; $idx<=$ver; $idx++ ) { |
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my $name=$contrib{"$idx:$prb:sendername"}; |
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$Discuss{"$name:$prb"}=$idx; |
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} |
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} |
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} |
| |
|
| =back |
return \%Discuss; |
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} |
| |
|
| =cut |
################################################ |
| |
################################################ |
| |
|
| sub DownloadClasslist { |
=pod |
| my ($courseID, $lastDownloadTime, $c)=@_; |
|
| my ($courseDomain,$courseNumber)=split(/\_/,$courseID); |
|
| my %classlist; |
|
| |
|
| my $modifiedTime = &Apache::lonnet::GetFileTimestamp($courseDomain, $courseNumber, |
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| 'classlist.db', |
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| $Apache::lonnet::perlvar{'lonUsersDir'}); |
|
| |
|
| # Always download the information if lastDownloadTime is set to |
|
| # Not downloaded, otherwise it is only downloaded if the file |
|
| # has been updated and has a more recent date stamp |
|
| if($lastDownloadTime ne 'Not downloaded' && |
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| $lastDownloadTime >= $modifiedTime && $modifiedTime >= 0) { |
|
| # Data is not gathered so return UpToDate as true. This |
|
| # will be interpreted in ProcessClasslist |
|
| $classlist{'lastDownloadTime'}=time; |
|
| $classlist{'UpToDate'} = 'true'; |
|
| return \%classlist; |
|
| } |
|
| |
|
| %classlist=&Apache::lonnet::dump('classlist',$courseDomain, $courseNumber); |
|
| foreach(keys (%classlist)) { |
|
| if(/^(con_lost|error|no_such_host)/i) { |
|
| return; |
|
| } |
|
| } |
|
| |
|
| foreach my $name (keys(%classlist)) { |
=item &GetUserName(username,userdomain) |
| if(defined($c) && ($c->aborted())) { |
|
| $classlist{'error'}='aborted'; |
|
| return \%classlist; |
|
| } |
|
| |
|
| my ($studentName,$studentDomain) = split(/\:/,$name); |
Returns a hash with the following entries: |
| # Download student environment data, specifically the full name and id. |
'firstname', 'middlename', 'lastname', 'generation', and 'fullname' |
| my %studentInformation=&Apache::lonnet::get('environment', |
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| ['lastname','generation', |
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| 'firstname','middlename', |
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| 'id'], |
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| $studentDomain, |
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| $studentName); |
|
| $classlist{$name.':studentInformation'}=\%studentInformation; |
|
| |
|
| if($c->aborted()) { |
|
| $classlist{'error'}='aborted'; |
|
| return \%classlist; |
|
| } |
|
| |
|
| #Section |
'fullname' is the result of &Apache::loncoursedata::ProcessFullName. |
| my %section=&Apache::lonnet::dump('roles',$studentDomain,$studentName); |
|
| $classlist{$name.':sections'}=\%section; |
|
| } |
|
| |
|
| $classlist{'UpToDate'} = 'false'; |
=cut |
| $classlist{'lastDownloadTime'}=time; |
|
| |
|
| return \%classlist; |
################################################ |
| |
################################################ |
| |
sub GetUserName { |
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my ($username,$userdomain) = @_; |
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$username = $ENV{'user.name'} if (! defined($username)); |
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$userdomain = $ENV{'user.domain'} if (! defined($username)); |
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my %userenv = &Apache::lonnet::get('environment', |
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['firstname','middlename','lastname','generation'], |
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$userdomain,$username); |
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$userenv{'fullname'} = &ProcessFullName($userenv{'lastname'}, |
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$userenv{'generation'}, |
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$userenv{'firstname'}, |
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$userenv{'middlename'}); |
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return %userenv; |
| } |
} |
| |
|
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################################################ |
| |
################################################ |
| |
|
| =pod |
=pod |
| |
|
| =item &DownloadCourseInformation() |
=item &ProcessFullName() |
| |
|
| Dump of all the course information for a single student. The data can be |
Takes lastname, generation, firstname, and middlename (or some partial |
| pruned by making use of dumps regular expression arguement. This function |
set of this data) and returns the full name version as a string. Format |
| also takes a regular expression which it passes straight through to dump. |
is Lastname generation, firstname middlename or a subset of this. |
| The data is no escaped, because it is done elsewhere. It also |
|
| checks the timestamp of the students course database file and only downloads |
|
| if it has been modified since the last download. |
|
| |
|
| =over 4 |
=cut |
| |
|
| Input: $namedata, $courseID, $lastDownloadTime, $WhatIWant |
################################################ |
| |
################################################ |
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sub ProcessFullName { |
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my ($lastname, $generation, $firstname, $middlename)=@_; |
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my $Str = ''; |
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|
| $namedata: student name:domain |
# Strip whitespace preceeding & following name components. |
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$lastname =~ s/(\s+$|^\s+)//g; |
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$generation =~ s/(\s+$|^\s+)//g; |
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$firstname =~ s/(\s+$|^\s+)//g; |
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$middlename =~ s/(\s+$|^\s+)//g; |
| |
|
| $courseID: The id of the course |
if($lastname ne '') { |
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$Str .= $lastname; |
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$Str .= ' '.$generation if ($generation ne ''); |
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$Str .= ','; |
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$Str .= ' '.$firstname if ($firstname ne ''); |
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$Str .= ' '.$middlename if ($middlename ne ''); |
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} else { |
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$Str .= $firstname if ($firstname ne ''); |
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$Str .= ' '.$middlename if ($middlename ne ''); |
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$Str .= ' '.$generation if ($generation ne ''); |
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} |
| |
|
| $lastDownloadTime: This is the date stamp for when this information was |
return $Str; |
| last gathered. If it is set to Not downloaded, it will gather the data |
} |
| again, though it currently does not remove the old data. |
|
| |
|
| $WhatIWant: Regular expression used to get selected data with dump |
################################################ |
| |
################################################ |
| |
|
| Output: \%courseData |
=pod |
| |
|
| \%courseData: A hash pointer to the raw data from the students course |
=item &make_into_hash($values); |
| database. |
|
| |
|
| =back |
Returns a reference to a hash as described by $values. $values is |
| |
assumed to be the result of |
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join(':',map {&Apache::lonnet::escape($_)} %orighash); |
| |
|
| =cut |
This is a helper function for get_current_state. |
| |
|
| sub DownloadCourseInformation { |
=cut |
| my ($namedata,$courseID,$lastDownloadTime,$WhatIWant)=@_; |
|
| my %courseData; |
|
| my ($name,$domain) = split(/\:/,$namedata); |
|
| |
|
| my $modifiedTime = &Apache::lonnet::GetFileTimestamp($domain, $name, |
################################################ |
| $courseID.'.db', |
################################################ |
| $Apache::lonnet::perlvar{'lonUsersDir'}); |
sub make_into_hash { |
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my $values = shift; |
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my %tmp = map { &Apache::lonnet::unescape($_); } |
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split(':',$values); |
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return \%tmp; |
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} |
| |
|
| if($lastDownloadTime >= $modifiedTime && $modifiedTime >= 0) { |
|
| # Data is not gathered so return UpToDate as true. This |
|
| # will be interpreted in ProcessClasslist |
|
| $courseData{$namedata.':lastDownloadTime'}=time; |
|
| $courseData{$namedata.':UpToDate'} = 'true'; |
|
| return \%courseData; |
|
| } |
|
| |
|
| # Download course data |
################################################ |
| if(!defined($WhatIWant)) { |
################################################ |
| # set the regular expression to everything by setting it to period |
|
| $WhatIWant = '.'; |
|
| } |
|
| %courseData=&Apache::lonnet::dump($courseID, $domain, $name, $WhatIWant); |
|
| $courseData{'UpToDate'} = 'false'; |
|
| $courseData{'lastDownloadTime'}=time; |
|
| |
|
| my %newData; |
=pod |
| foreach (keys(%courseData)) { |
|
| # need to have the keys to be prepended with the name:domain of the |
|
| # student to reduce data collision later. |
|
| $newData{$namedata.':'.$_} = $courseData{$_}; |
|
| } |
|
| |
|
| return \%newData; |
=head1 LOCAL DATA CACHING SUBROUTINES |
| } |
|
| |
|
| # ----- END DOWNLOAD INFORMATION --------------------------------------- |
The local caching is done using MySQL. There is no fall-back implementation |
| |
if MySQL is not running. |
| |
|
| =pod |
The programmers interface is to call &get_current_state() or some other |
| |
primary interface subroutine (described below). The internals of this |
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storage system are documented here. |
| |
|
| =head1 PROCESSING FUNCTIONS |
There are six tables used to store student performance data (the results of |
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a dumpcurrent). Each of these tables is created in MySQL with a name of |
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$courseid_*****, where ***** is 'symb', 'part', or whatever is appropriate |
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for the table. The tables and their purposes are described below. |
| |
|
| These functions process all the data for all the students. Also, they |
Some notes before we get started. |
| are the functions that access the cache database for writing the majority of |
|
| the time. The downloading and caching were separated to reduce problems |
|
| with stopping downloading then can not tie hash to database later. |
|
| |
|
| =cut |
Each table must have a PRIMARY KEY, which is a column or set of columns which |
| |
will serve to uniquely identify a row of data. NULL is not allowed! |
| |
|
| # ----- PROCESSING FUNCTIONS --------------------------------------- |
INDEXes work best on integer data. |
| |
|
| =pod |
JOIN is used to combine data from many tables into one output. |
| |
|
| =item &ProcessTopResourceMap() |
lonmysql.pm is used for some of the interface, specifically the table creation |
| |
calls. The inserts are done in bulk by directly calling the database handler. |
| |
The SELECT ... JOIN statement used to retrieve the data does not have an |
| |
interface in lonmysql.pm and I shudder at the thought of writing one. |
| |
|
| Trace through the "big hash" created in rat/lonuserstate.pm::loadmap. |
=head3 Table Descriptions |
| Basically, this function organizes a subset of the data and stores it in |
|
| cached data. The data stored is the problems, sequences, sequence titles, |
|
| parts of problems, and their ordering. Column width information is also |
|
| partially handled here on a per sequence basis. |
|
| |
|
| =over 4 |
=over 4 |
| |
|
| Input: $cache, $c |
=item $symb_table |
| |
|
| $cache: A pointer to a hash to store the information |
The symb_table has two columns. The first is a 'symb_id' and the second |
| |
is the text name for the 'symb' (limited to 64k). The 'symb_id' is generated |
| $c: The connection class used to determine if an abort has been sent to the |
automatically by MySQL so inserts should be done on this table with an |
| browser |
empty first element. This table has its PRIMARY KEY on the 'symb_id'. |
| |
|
| Output: A string that contains an error message or "OK" if everything went |
=item $part_table |
| smoothly. |
|
| |
The part_table has two columns. The first is a 'part_id' and the second |
| |
is the text name for the 'part' (limited to 100 characters). The 'part_id' is |
| |
generated automatically by MySQL so inserts should be done on this table with |
| |
an empty first element. This table has its PRIMARY KEY on the 'part' (100 |
| |
characters) and a KEY on 'part_id'. |
| |
|
| |
=item $student_table |
| |
|
| |
The student_table has two columns. The first is a 'student_id' and the second |
| |
is the text description of the 'student' (typically username:domain) (less |
| |
than 100 characters). The 'student_id' is automatically generated by MySQL. |
| |
The use of the name 'student_id' is loaded, I know, but this ID is used ONLY |
| |
internally to the MySQL database and is not the same as the students ID |
| |
(stored in the students environment). This table has its PRIMARY KEY on the |
| |
'student' (100 characters). |
| |
|
| |
=item $updatetime_table |
| |
|
| |
The updatetime_table has two columns. The first is 'student' (100 characters, |
| |
typically username:domain). The second is 'updatetime', which is an unsigned |
| |
integer, NOT a MySQL date. This table has its PRIMARY KEY on 'student' (100 |
| |
characters). |
| |
|
| |
=item $performance_table |
| |
|
| |
The performance_table has 9 columns. The first three are 'symb_id', |
| |
'student_id', and 'part_id'. These comprise the PRIMARY KEY for this table |
| |
and are directly related to the $symb_table, $student_table, and $part_table |
| |
described above. MySQL does better indexing on numeric items than text, |
| |
so we use these three "index tables". The remaining columns are |
| |
'solved', 'tries', 'awarded', 'award', 'awarddetail', and 'timestamp'. |
| |
These are either the MySQL type TINYTEXT or various integers ('tries' and |
| |
'timestamp'). This table has KEYs of 'student_id' and 'symb_id'. |
| |
For use of this table, see the functions described below. |
| |
|
| |
=item $parameters_table |
| |
|
| |
The parameters_table holds the data that does not fit neatly into the |
| |
performance_table. The parameters table has four columns: 'symb_id', |
| |
'student_id', 'parameter', and 'value'. 'symb_id', 'student_id', and |
| |
'parameter' comprise the PRIMARY KEY for this table. 'parameter' is |
| |
limited to 255 characters. 'value' is limited to 64k characters. |
| |
|
| =back |
=back |
| |
|
| =cut |
=head3 Important Subroutines |
| |
|
| sub ProcessTopResourceMap { |
Here is a brief overview of the subroutines which are likely to be of |
| my ($cache,$c)=@_; |
interest: |
| my %hash; |
|
| my $fn=$ENV{'request.course.fn'}; |
|
| if(-e "$fn.db") { |
|
| my $tieTries=0; |
|
| while($tieTries < 3) { |
|
| if($c->aborted()) { |
|
| return; |
|
| } |
|
| if(tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) { |
|
| last; |
|
| } |
|
| $tieTries++; |
|
| sleep 1; |
|
| } |
|
| if($tieTries >= 3) { |
|
| return 'Coursemap undefined.'; |
|
| } |
|
| } else { |
|
| return 'Can not open Coursemap.'; |
|
| } |
|
| |
|
| my $oldkeys; |
|
| if(defined($cache->{'ResourceKeys'})) { |
|
| $oldkeys = $cache->{'ResourceKeys'}; |
|
| foreach (split(':::', $cache->{'ResourceKeys'})) { |
|
| delete $cache->{$_}; |
|
| } |
|
| delete $cache->{'ResourceKeys'}; |
|
| } |
|
| |
|
| # Initialize state machine. Set information pointing to top level map. |
=over 4 |
| my (@sequences, @currentResource, @finishResource); |
|
| my ($currentSequence, $currentResourceID, $lastResourceID); |
|
| |
|
| $currentResourceID=$hash{'ids_'. |
|
| &Apache::lonnet::clutter($ENV{'request.course.uri'})}; |
|
| push(@currentResource, $currentResourceID); |
|
| $lastResourceID=-1; |
|
| $currentSequence=-1; |
|
| my $topLevelSequenceNumber = $currentSequence; |
|
| |
|
| my %sequenceRecord; |
|
| my %allkeys; |
|
| while(1) { |
|
| if($c->aborted()) { |
|
| last; |
|
| } |
|
| # HANDLE NEW SEQUENCE! |
|
| #if page || sequence |
|
| if(defined($hash{'map_pc_'.$hash{'src_'.$currentResourceID}}) && |
|
| !defined($sequenceRecord{$currentResourceID})) { |
|
| $sequenceRecord{$currentResourceID}++; |
|
| push(@sequences, $currentSequence); |
|
| push(@currentResource, $currentResourceID); |
|
| push(@finishResource, $lastResourceID); |
|
| |
|
| $currentSequence=$hash{'map_pc_'.$hash{'src_'.$currentResourceID}}; |
|
| |
|
| # Mark sequence as containing problems. If it doesn't, then |
|
| # it will be removed when processing for this sequence is |
|
| # complete. This allows the problems in a sequence |
|
| # to be outputed before problems in the subsequences |
|
| if(!defined($cache->{'orderedSequences'})) { |
|
| $cache->{'orderedSequences'}=$currentSequence; |
|
| } else { |
|
| $cache->{'orderedSequences'}.=':'.$currentSequence; |
|
| } |
|
| $allkeys{'orderedSequences'}++; |
|
| |
|
| $lastResourceID=$hash{'map_finish_'. |
=item &get_current_state(): programmers interface. |
| $hash{'src_'.$currentResourceID}}; |
|
| $currentResourceID=$hash{'map_start_'. |
|
| $hash{'src_'.$currentResourceID}}; |
|
| |
|
| if(!($currentResourceID) || !($lastResourceID)) { |
|
| $currentSequence=pop(@sequences); |
|
| $currentResourceID=pop(@currentResource); |
|
| $lastResourceID=pop(@finishResource); |
|
| if($currentSequence eq $topLevelSequenceNumber) { |
|
| last; |
|
| } |
|
| } |
|
| next; |
|
| } |
|
| |
|
| # Handle gradable resources: exams, problems, etc |
=item &init_dbs(): table creation |
| $currentResourceID=~/(\d+)\.(\d+)/; |
|
| my $partA=$1; |
|
| my $partB=$2; |
|
| if($hash{'src_'.$currentResourceID}=~ |
|
| /\.(problem|exam|quiz|assess|survey|form)$/ && |
|
| $partA eq $currentSequence && |
|
| !defined($sequenceRecord{$currentSequence.':'. |
|
| $currentResourceID})) { |
|
| $sequenceRecord{$currentSequence.':'.$currentResourceID}++; |
|
| my $Problem = &Apache::lonnet::symbclean( |
|
| &Apache::lonnet::declutter($hash{'map_id_'.$partA}). |
|
| '___'.$partB.'___'. |
|
| &Apache::lonnet::declutter($hash{'src_'. |
|
| $currentResourceID})); |
|
| |
|
| $cache->{$currentResourceID.':problem'}=$Problem; |
|
| $allkeys{$currentResourceID.':problem'}++; |
|
| if(!defined($cache->{$currentSequence.':problems'})) { |
|
| $cache->{$currentSequence.':problems'}=$currentResourceID; |
|
| } else { |
|
| $cache->{$currentSequence.':problems'}.= |
|
| ':'.$currentResourceID; |
|
| } |
|
| $allkeys{$currentSequence.':problems'}++; |
|
| |
|
| my $meta=$hash{'src_'.$currentResourceID}; |
=item &update_student_data(): data storage calls |
| # $cache->{$currentResourceID.':title'}= |
|
| # &Apache::lonnet::metdata($meta,'title'); |
|
| $cache->{$currentResourceID.':title'}= |
|
| $hash{'title_'.$currentResourceID}; |
|
| $allkeys{$currentResourceID.':title'}++; |
|
| $cache->{$currentResourceID.':source'}= |
|
| $hash{'src_'.$currentResourceID}; |
|
| $allkeys{$currentResourceID.':source'}++; |
|
| |
|
| # Get Parts for problem |
|
| my %beenHere; |
|
| foreach (split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) { |
|
| if(/^\w+response_\d+.*/) { |
|
| my (undef, $partId, $responseId) = split(/_/,$_); |
|
| if($beenHere{'p:'.$partId} == 0) { |
|
| $beenHere{'p:'.$partId}++; |
|
| if(!defined($cache->{$currentSequence.':'. |
|
| $currentResourceID.':parts'})) { |
|
| $cache->{$currentSequence.':'.$currentResourceID. |
|
| ':parts'}=$partId; |
|
| } else { |
|
| $cache->{$currentSequence.':'.$currentResourceID. |
|
| ':parts'}.=':'.$partId; |
|
| } |
|
| $allkeys{$currentSequence.':'.$currentResourceID. |
|
| ':parts'}++; |
|
| } |
|
| if($beenHere{'r:'.$partId.':'.$responseId} == 0) { |
|
| $beenHere{'r:'.$partId.':'.$responseId}++; |
|
| if(!defined($cache->{$currentSequence.':'. |
|
| $currentResourceID.':'.$partId. |
|
| ':responseIDs'})) { |
|
| $cache->{$currentSequence.':'.$currentResourceID. |
|
| ':'.$partId.':responseIDs'}=$responseId; |
|
| } else { |
|
| $cache->{$currentSequence.':'.$currentResourceID. |
|
| ':'.$partId.':responseIDs'}.=':'. |
|
| $responseId; |
|
| } |
|
| $allkeys{$currentSequence.':'.$currentResourceID.':'. |
|
| $partId.':responseIDs'}++; |
|
| } |
|
| if(/^optionresponse/ && |
|
| $beenHere{'o:'.$partId.':'.$currentResourceID} == 0) { |
|
| $beenHere{'o:'.$partId.$currentResourceID}++; |
|
| if(defined($cache->{'OptionResponses'})) { |
|
| $cache->{'OptionResponses'}.= ':::'. |
|
| $currentSequence.':'.$currentResourceID.':'. |
|
| $partId.':'.$responseId; |
|
| } else { |
|
| $cache->{'OptionResponses'}= $currentSequence.':'. |
|
| $currentResourceID.':'. |
|
| $partId.':'.$responseId; |
|
| } |
|
| $allkeys{'OptionResponses'}++; |
|
| } |
|
| } |
|
| } |
|
| } |
|
| |
|
| # if resource == finish resource, then it is the end of a sequence/page |
=item &get_student_data_from_performance_cache(): data retrieval |
| if($currentResourceID eq $lastResourceID) { |
|
| # pop off last resource of sequence |
|
| $currentResourceID=pop(@currentResource); |
|
| $lastResourceID=pop(@finishResource); |
|
| |
|
| if(defined($cache->{$currentSequence.':problems'})) { |
|
| # Capture sequence information here |
|
| $cache->{$currentSequence.':title'}= |
|
| $hash{'title_'.$currentResourceID}; |
|
| $allkeys{$currentSequence.':title'}++; |
|
| $cache->{$currentSequence.':source'}= |
|
| $hash{'src_'.$currentResourceID}; |
|
| $allkeys{$currentSequence.':source'}++; |
|
| |
|
| my $totalProblems=0; |
|
| foreach my $currentProblem (split(/\:/, |
|
| $cache->{$currentSequence. |
|
| ':problems'})) { |
|
| foreach (split(/\:/,$cache->{$currentSequence.':'. |
|
| $currentProblem. |
|
| ':parts'})) { |
|
| $totalProblems++; |
|
| } |
|
| } |
|
| my @titleLength=split(//,$cache->{$currentSequence. |
|
| ':title'}); |
|
| # $extra is 3 for problems correct and 3 for space |
|
| # between problems correct and problem output |
|
| my $extra = 6; |
|
| if(($totalProblems + $extra) > (scalar @titleLength)) { |
|
| $cache->{$currentSequence.':columnWidth'}= |
|
| $totalProblems + $extra; |
|
| } else { |
|
| $cache->{$currentSequence.':columnWidth'}= |
|
| (scalar @titleLength); |
|
| } |
|
| $allkeys{$currentSequence.':columnWidth'}++; |
|
| } else { |
|
| # Remove sequence from list, if it contains no problems to |
|
| # display. |
|
| $cache->{'orderedSequences'}=~s/$currentSequence//; |
|
| $cache->{'orderedSequences'}=~s/::/:/g; |
|
| $cache->{'orderedSequences'}=~s/^:|:$//g; |
|
| } |
|
| |
|
| $currentSequence=pop(@sequences); |
=back |
| if($currentSequence eq $topLevelSequenceNumber) { |
|
| last; |
|
| } |
|
| } |
|
| |
|
| # MOVE!!! |
=head3 Main Documentation |
| # move to next resource |
|
| unless(defined($hash{'to_'.$currentResourceID})) { |
|
| # big problem, need to handle. Next is probably wrong |
|
| my $errorMessage = 'Big problem in '; |
|
| $errorMessage .= 'loncoursedata::ProcessTopLevelMap.'; |
|
| $errorMessage .= ' bighash to_$currentResourceID not defined!'; |
|
| &Apache::lonnet::logthis($errorMessage); |
|
| last; |
|
| } |
|
| my @nextResources=(); |
|
| foreach (split(/\,/,$hash{'to_'.$currentResourceID})) { |
|
| if(!defined($sequenceRecord{$currentSequence.':'. |
|
| $hash{'goesto_'.$_}})) { |
|
| push(@nextResources, $hash{'goesto_'.$_}); |
|
| } |
|
| } |
|
| push(@currentResource, @nextResources); |
|
| # Set the next resource to be processed |
|
| $currentResourceID=pop(@currentResource); |
|
| } |
|
| |
|
| my @theKeys = keys(%allkeys); |
=over 4 |
| my $newkeys = join(':::', @theKeys); |
|
| $cache->{'ResourceKeys'} = join(':::', $newkeys); |
|
| if($newkeys ne $oldkeys) { |
|
| $cache->{'ResourceUpdated'} = 'true'; |
|
| } else { |
|
| $cache->{'ResourceUpdated'} = 'false'; |
|
| } |
|
| |
|
| unless (untie(%hash)) { |
=cut |
| &Apache::lonnet::logthis("<font color=blue>WARNING: ". |
|
| "Could not untie coursemap $fn (browse)". |
|
| ".</font>"); |
|
| } |
|
| |
|
| return 'OK'; |
################################################ |
| } |
################################################ |
| |
|
| =pod |
################################################ |
| |
################################################ |
| |
{ |
| |
|
| =item &ProcessClasslist() |
my $current_course =''; |
| |
my $symb_table; |
| |
my $part_table; |
| |
my $student_table; |
| |
my $updatetime_table; |
| |
my $performance_table; |
| |
my $parameters_table; |
| |
|
| Taking the class list dumped from &DownloadClasslist(), all the |
################################################ |
| students and their non-class information is processed using the |
################################################ |
| &ProcessStudentInformation() function. A date stamp is also recorded for |
|
| when the data was processed. |
|
| |
|
| Takes data downloaded for a student and breaks it up into managable pieces and |
|
| stored in cache data. The username, domain, class related date, PID, |
|
| full name, and section are all processed here. |
|
| |
|
| =over 4 |
=pod |
| |
|
| Input: $cache, $classlist, $courseID, $ChartDB, $c |
=item &init_dbs() |
| |
|
| $cache: A hash pointer to store the data |
Input: course id |
| |
|
| $classlist: The hash of data collected about a student from |
Output: 0 on success, positive integer on error |
| &DownloadClasslist(). The hash contains a list of students, a pointer |
|
| to a hash of student information for each student, and each students section |
|
| number. |
|
| |
|
| $courseID: The course ID |
|
| |
|
| $ChartDB: The name of the cache database file. |
|
| |
|
| $c: The connection class used to determine if an abort has been sent to the |
|
| browser |
|
| |
|
| Output: @names |
|
| |
|
| @names: An array of students whose information has been processed, and are to |
|
| be considered in an arbitrary order. The entries in @names are of the form |
|
| username:domain. |
|
| |
|
| The values in $cache are as follows: |
|
| |
|
| *NOTE: for the following $name implies username:domain |
|
| $name.':error' only defined if an error occured. Value |
|
| contains the error message |
|
| $name.':lastDownloadTime' unconverted time of the last update of a |
|
| student\'s course data |
|
| $name.'updateTime' coverted time of the last update of a |
|
| student\'s course data |
|
| $name.':username' username of a student |
|
| $name.':domain' domain of a student |
|
| $name.':fullname' full name of a student |
|
| $name.':id' PID of a student |
|
| $name.':Status' active/expired status of a student |
|
| $name.':section' section of a student |
|
| |
|
| =back |
This routine issues the calls to lonmysql to create the tables used to |
| |
store student data. |
| |
|
| =cut |
=cut |
| |
|
| sub ProcessClasslist { |
################################################ |
| my ($cache,$classlist,$courseID,$c)=@_; |
################################################ |
| my @names=(); |
sub init_dbs { |
| |
my $courseid = shift; |
| $cache->{'ClasslistTimeStamp'}=$classlist->{'lastDownloadTime'}; |
&setup_table_names($courseid); |
| if($classlist->{'UpToDate'} eq 'true') { |
# |
| return split(/:::/,$cache->{'NamesOfStudents'});; |
# Note - changes to this table must be reflected in the code that |
| |
# stores the data (calls &Apache::lonmysql::store_row with this table |
| |
# id |
| |
my $symb_table_def = { |
| |
id => $symb_table, |
| |
permanent => 'no', |
| |
columns => [{ name => 'symb_id', |
| |
type => 'MEDIUMINT UNSIGNED', |
| |
restrictions => 'NOT NULL', |
| |
auto_inc => 'yes', }, |
| |
{ name => 'symb', |
| |
type => 'MEDIUMTEXT', |
| |
restrictions => 'NOT NULL'}, |
| |
], |
| |
'PRIMARY KEY' => ['symb_id'], |
| |
}; |
| |
# |
| |
my $part_table_def = { |
| |
id => $part_table, |
| |
permanent => 'no', |
| |
columns => [{ name => 'part_id', |
| |
type => 'MEDIUMINT UNSIGNED', |
| |
restrictions => 'NOT NULL', |
| |
auto_inc => 'yes', }, |
| |
{ name => 'part', |
| |
type => 'VARCHAR(100)', |
| |
restrictions => 'NOT NULL'}, |
| |
], |
| |
'PRIMARY KEY' => ['part (100)'], |
| |
'KEY' => [{ columns => ['part_id']},], |
| |
}; |
| |
# |
| |
my $student_table_def = { |
| |
id => $student_table, |
| |
permanent => 'no', |
| |
columns => [{ name => 'student_id', |
| |
type => 'MEDIUMINT UNSIGNED', |
| |
restrictions => 'NOT NULL', |
| |
auto_inc => 'yes', }, |
| |
{ name => 'student', |
| |
type => 'VARCHAR(100)', |
| |
restrictions => 'NOT NULL'}, |
| |
], |
| |
'PRIMARY KEY' => ['student (100)'], |
| |
'KEY' => [{ columns => ['student_id']},], |
| |
}; |
| |
# |
| |
my $updatetime_table_def = { |
| |
id => $updatetime_table, |
| |
permanent => 'no', |
| |
columns => [{ name => 'student', |
| |
type => 'VARCHAR(100)', |
| |
restrictions => 'NOT NULL UNIQUE',}, |
| |
{ name => 'updatetime', |
| |
type => 'INT UNSIGNED', |
| |
restrictions => 'NOT NULL' }, |
| |
], |
| |
'PRIMARY KEY' => ['student (100)'], |
| |
}; |
| |
# |
| |
my $performance_table_def = { |
| |
id => $performance_table, |
| |
permanent => 'no', |
| |
columns => [{ name => 'symb_id', |
| |
type => 'MEDIUMINT UNSIGNED', |
| |
restrictions => 'NOT NULL' }, |
| |
{ name => 'student_id', |
| |
type => 'MEDIUMINT UNSIGNED', |
| |
restrictions => 'NOT NULL' }, |
| |
{ name => 'part_id', |
| |
type => 'MEDIUMINT UNSIGNED', |
| |
restrictions => 'NOT NULL' }, |
| |
{ name => 'solved', |
| |
type => 'TINYTEXT' }, |
| |
{ name => 'tries', |
| |
type => 'SMALLINT UNSIGNED' }, |
| |
{ name => 'awarded', |
| |
type => 'TINYTEXT' }, |
| |
{ name => 'award', |
| |
type => 'TINYTEXT' }, |
| |
{ name => 'awarddetail', |
| |
type => 'TINYTEXT' }, |
| |
{ name => 'timestamp', |
| |
type => 'INT UNSIGNED'}, |
| |
], |
| |
'PRIMARY KEY' => ['symb_id','student_id','part_id'], |
| |
'KEY' => [{ columns=>['student_id'] }, |
| |
{ columns=>['symb_id'] },], |
| |
}; |
| |
# |
| |
my $parameters_table_def = { |
| |
id => $parameters_table, |
| |
permanent => 'no', |
| |
columns => [{ name => 'symb_id', |
| |
type => 'MEDIUMINT UNSIGNED', |
| |
restrictions => 'NOT NULL' }, |
| |
{ name => 'student_id', |
| |
type => 'MEDIUMINT UNSIGNED', |
| |
restrictions => 'NOT NULL' }, |
| |
{ name => 'parameter', |
| |
type => 'TINYTEXT', |
| |
restrictions => 'NOT NULL' }, |
| |
{ name => 'value', |
| |
type => 'MEDIUMTEXT' }, |
| |
], |
| |
'PRIMARY KEY' => ['symb_id','student_id','parameter (255)'], |
| |
}; |
| |
# |
| |
# Create the tables |
| |
my $tableid; |
| |
$tableid = &Apache::lonmysql::create_table($symb_table_def); |
| |
if (! defined($tableid)) { |
| |
&Apache::lonnet::logthis("error creating symb_table: ". |
| |
&Apache::lonmysql::get_error()); |
| |
return 1; |
| |
} |
| |
# |
| |
$tableid = &Apache::lonmysql::create_table($part_table_def); |
| |
if (! defined($tableid)) { |
| |
&Apache::lonnet::logthis("error creating part_table: ". |
| |
&Apache::lonmysql::get_error()); |
| |
return 2; |
| |
} |
| |
# |
| |
$tableid = &Apache::lonmysql::create_table($student_table_def); |
| |
if (! defined($tableid)) { |
| |
&Apache::lonnet::logthis("error creating student_table: ". |
| |
&Apache::lonmysql::get_error()); |
| |
return 3; |
| } |
} |
| |
# |
| |
$tableid = &Apache::lonmysql::create_table($updatetime_table_def); |
| |
if (! defined($tableid)) { |
| |
&Apache::lonnet::logthis("error creating updatetime_table: ". |
| |
&Apache::lonmysql::get_error()); |
| |
return 4; |
| |
} |
| |
# |
| |
$tableid = &Apache::lonmysql::create_table($performance_table_def); |
| |
if (! defined($tableid)) { |
| |
&Apache::lonnet::logthis("error creating preformance_table: ". |
| |
&Apache::lonmysql::get_error()); |
| |
return 5; |
| |
} |
| |
# |
| |
$tableid = &Apache::lonmysql::create_table($parameters_table_def); |
| |
if (! defined($tableid)) { |
| |
&Apache::lonnet::logthis("error creating parameters_table: ". |
| |
&Apache::lonmysql::get_error()); |
| |
return 6; |
| |
} |
| |
return 0; |
| |
} |
| |
|
| foreach my $name (keys(%$classlist)) { |
################################################ |
| if($name =~ /\:section/ || $name =~ /\:studentInformation/ || |
################################################ |
| $name eq '' || $name eq 'UpToDate' || $name eq 'lastDownloadTime') { |
|
| next; |
|
| } |
|
| if($c->aborted()) { |
|
| return (); |
|
| } |
|
| my $studentInformation = $classlist->{$name.':studentInformation'}; |
|
| my $date = $classlist->{$name}; |
|
| my ($studentName,$studentDomain) = split(/\:/,$name); |
|
| |
|
| $cache->{$name.':username'}=$studentName; |
|
| $cache->{$name.':domain'}=$studentDomain; |
|
| # Initialize timestamp for student |
|
| if(!defined($cache->{$name.':lastDownloadTime'})) { |
|
| $cache->{$name.':lastDownloadTime'}='Not downloaded'; |
|
| $cache->{$name.':updateTime'}=' Not updated'; |
|
| } |
|
| |
|
| my $error = 0; |
=pod |
| foreach(keys(%$studentInformation)) { |
|
| if(/^(con_lost|error|no_such_host)/i) { |
|
| $cache->{$name.':error'}= |
|
| 'Could not download student environment data.'; |
|
| $cache->{$name.':fullname'}=''; |
|
| $cache->{$name.':id'}=''; |
|
| $error = 1; |
|
| } |
|
| } |
|
| next if($error); |
|
| push(@names,$name); |
|
| $cache->{$name.':fullname'}=&ProcessFullName( |
|
| $studentInformation->{'lastname'}, |
|
| $studentInformation->{'generation'}, |
|
| $studentInformation->{'firstname'}, |
|
| $studentInformation->{'middlename'}); |
|
| $cache->{$name.':id'}=$studentInformation->{'id'}; |
|
| |
|
| my ($end, $start)=split(':',$date); |
|
| $courseID=~s/\_/\//g; |
|
| $courseID=~s/^(\w)/\/$1/; |
|
| |
|
| my $sec=''; |
|
| my $sectionData = $classlist->{$name.':sections'}; |
|
| foreach my $key (keys (%$sectionData)) { |
|
| my $value = $sectionData->{$key}; |
|
| if ($key=~/^$courseID(?:\/)*(\w+)*\_st$/) { |
|
| my $tempsection=$1; |
|
| if($key eq $courseID.'_st') { |
|
| $tempsection=''; |
|
| } |
|
| my (undef,$roleend,$rolestart)=split(/\_/,$value); |
|
| if($roleend eq $end && $rolestart eq $start) { |
|
| $sec = $tempsection; |
|
| last; |
|
| } |
|
| } |
|
| } |
|
| |
|
| my $status='Expired'; |
=item &delete_caches() |
| if(((!$end) || time < $end) && ((!$start) || (time > $start))) { |
|
| $status='Active'; |
|
| } |
|
| $cache->{$name.':Status'}=$status; |
|
| $cache->{$name.':section'}=$sec; |
|
| |
|
| if($sec eq '' || !defined($sec) || $sec eq ' ') { |
=cut |
| $sec = 'none'; |
|
| } |
################################################ |
| if(defined($cache->{'sectionList'})) { |
################################################ |
| if($cache->{'sectionList'} !~ /(^$sec:|^$sec$|:$sec$|:$sec:)/) { |
sub delete_caches { |
| $cache->{'sectionList'} .= ':'.$sec; |
my $courseid = shift; |
| } |
$courseid = $ENV{'request.course.id'} if (! defined($courseid)); |
| } else { |
# |
| $cache->{'sectionList'} = $sec; |
&setup_table_names($courseid); |
| |
# |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
foreach my $table ($symb_table,$part_table,$student_table, |
| |
$updatetime_table,$performance_table, |
| |
$parameters_table ){ |
| |
my $command = 'DROP TABLE '.$table.';'; |
| |
$dbh->do($command); |
| |
if ($dbh->err) { |
| |
&Apache::lonnet::logthis($command.' resulted in error: '.$dbh->errstr); |
| } |
} |
| } |
} |
| |
return; |
| $cache->{'ClasslistTimestamp'}=time; |
|
| $cache->{'NamesOfStudents'}=join(':::',@names); |
|
| |
|
| return @names; |
|
| } |
} |
| |
|
| =pod |
################################################ |
| |
################################################ |
| |
|
| =item &ProcessStudentData() |
=pod |
| |
|
| Takes the course data downloaded for a student in |
=item &get_part_id() |
| &DownloadCourseInformation() and breaks it up into key value pairs |
|
| to be stored in the cached data. The keys are comprised of the |
|
| $username:$domain:$keyFromCourseDatabase. The student username:domain is |
|
| stored away signifying that the students information has been downloaded and |
|
| can be reused from cached data. |
|
| |
|
| =over 4 |
Get the MySQL id of a problem part string. |
| |
|
| Input: $cache, $courseData, $name |
Input: $part |
| |
|
| $cache: A hash pointer to store data |
Output: undef on error, integer $part_id on success. |
| |
|
| $courseData: A hash pointer that points to the course data downloaded for a |
=item &get_part() |
| student. |
|
| |
|
| $name: username:domain |
Get the string describing a part from the MySQL id of the problem part. |
| |
|
| Output: None |
Input: $part_id |
| |
|
| *NOTE: There is no output, but an error message is stored away in the cache |
Output: undef on error, $part string on success. |
| data. This is checked in &FormatStudentData(). The key username:domain:error |
|
| will only exist if an error occured. The error is an error from |
|
| &DownloadCourseInformation(). |
|
| |
|
| =back |
|
| |
|
| =cut |
=cut |
| |
|
| sub ProcessStudentData { |
################################################ |
| my ($cache,$courseData,$name)=@_; |
################################################ |
| |
|
| if(!&CheckDateStampError($courseData, $cache, $name)) { |
|
| return; |
|
| } |
|
| |
|
| # This little delete thing, should not be here. Move some other |
my $have_read_part_table = 0; |
| # time though. |
my %ids_by_part; |
| if(defined($cache->{$name.':keys'})) { |
my %parts_by_id; |
| foreach (split(':::', $cache->{$name.':keys'})) { |
|
| delete $cache->{$name.':'.$_}; |
sub get_part_id { |
| } |
my ($part) = @_; |
| delete $cache->{$name.':keys'}; |
$part = 0 if (! defined($part)); |
| |
if (! $have_read_part_table) { |
| |
my @Result = &Apache::lonmysql::get_rows($part_table); |
| |
foreach (@Result) { |
| |
$ids_by_part{$_->[1]}=$_->[0]; |
| |
} |
| |
$have_read_part_table = 1; |
| |
} |
| |
if (! exists($ids_by_part{$part})) { |
| |
&Apache::lonmysql::store_row($part_table,[undef,$part]); |
| |
undef(%ids_by_part); |
| |
my @Result = &Apache::lonmysql::get_rows($part_table); |
| |
foreach (@Result) { |
| |
$ids_by_part{$_->[1]}=$_->[0]; |
| |
} |
| } |
} |
| |
return $ids_by_part{$part} if (exists($ids_by_part{$part})); |
| |
return undef; # error |
| |
} |
| |
|
| my %courseKeys; |
sub get_part { |
| # user name:domain was prepended earlier in DownloadCourseInformation |
my ($part_id) = @_; |
| foreach (keys %$courseData) { |
if (! exists($parts_by_id{$part_id}) || |
| my $currentKey = $_; |
! defined($parts_by_id{$part_id}) || |
| $currentKey =~ s/^$name//; |
$parts_by_id{$part_id} eq '') { |
| $courseKeys{$currentKey}++; |
my @Result = &Apache::lonmysql::get_rows($part_table); |
| $cache->{$_}=$courseData->{$_}; |
foreach (@Result) { |
| |
$parts_by_id{$_->[0]}=$_->[1]; |
| |
} |
| } |
} |
| |
return $parts_by_id{$part_id} if(exists($parts_by_id{$part_id})); |
| $cache->{$name.':keys'} = join(':::', keys(%courseKeys)); |
return undef; # error |
| |
|
| return; |
|
| } |
} |
| |
|
| =pod |
################################################ |
| |
################################################ |
| =item &ExtractStudentData() |
|
| |
|
| HISTORY: This function originally existed in every statistics module, |
|
| and performed different tasks, the had some overlap. Due to the need |
|
| for the data from the different modules, they were combined into |
|
| a single function. |
|
| |
|
| This function now extracts all the necessary course data for a student |
|
| from what was downloaded from their homeserver. There is some extra |
|
| time overhead compared to the ProcessStudentInformation function, but |
|
| it would have had to occurred at some point anyways. This is now |
|
| typically called while downloading the data it will process. It is |
|
| the brother function to ProcessStudentInformation. |
|
| |
|
| =over 4 |
|
| |
|
| Input: $input, $output, $data, $name |
=pod |
| |
|
| $input: A hash that contains the input data to be processed |
=item &get_symb_id() |
| |
|
| $output: A hash to contain the processed data |
Get the MySQL id of a symb. |
| |
|
| $data: A hash containing the information on what is to be |
Input: $symb |
| processed and how (basically). |
|
| |
|
| $name: username:domain |
Output: undef on error, integer $symb_id on success. |
| |
|
| The input is slightly different here, but is quite simple. |
=item &get_symb() |
| It is currently used where the $input, $output, and $data |
|
| can and are often the same hashes, but they do not need |
|
| to be. |
|
| |
|
| Output: None |
Get the symb associated with a MySQL symb_id. |
| |
|
| *NOTE: There is no output, but an error message is stored away in the cache |
Input: $symb_id |
| data. This is checked in &FormatStudentData(). The key username:domain:error |
|
| will only exist if an error occured. The error is an error from |
|
| &DownloadCourseInformation(). |
|
| |
|
| =back |
Output: undef on error, $symb on success. |
| |
|
| =cut |
=cut |
| |
|
| sub ExtractStudentData { |
################################################ |
| my ($input, $output, $data, $name)=@_; |
################################################ |
| |
|
| if(!&CheckDateStampError($input, $data, $name)) { |
my $have_read_symb_table = 0; |
| return; |
my %ids_by_symb; |
| |
my %symbs_by_id; |
| |
|
| |
sub get_symb_id { |
| |
my ($symb) = @_; |
| |
if (! $have_read_symb_table) { |
| |
my @Result = &Apache::lonmysql::get_rows($symb_table); |
| |
foreach (@Result) { |
| |
$ids_by_symb{$_->[1]}=$_->[0]; |
| |
} |
| |
$have_read_symb_table = 1; |
| |
} |
| |
if (! exists($ids_by_symb{$symb})) { |
| |
&Apache::lonmysql::store_row($symb_table,[undef,$symb]); |
| |
undef(%ids_by_symb); |
| |
my @Result = &Apache::lonmysql::get_rows($symb_table); |
| |
foreach (@Result) { |
| |
$ids_by_symb{$_->[1]}=$_->[0]; |
| |
} |
| } |
} |
| |
return $ids_by_symb{$symb} if(exists( $ids_by_symb{$symb})); |
| |
return undef; # error |
| |
} |
| |
|
| # This little delete thing, should not be here. Move some other |
sub get_symb { |
| # time though. |
my ($symb_id) = @_; |
| my %allkeys; |
if (! exists($symbs_by_id{$symb_id}) || |
| if(defined($output->{$name.':keys'})) { |
! defined($symbs_by_id{$symb_id}) || |
| foreach (split(':::', $output->{$name.':keys'})) { |
$symbs_by_id{$symb_id} eq '') { |
| delete $output->{$name.':'.$_}; |
my @Result = &Apache::lonmysql::get_rows($symb_table); |
| } |
foreach (@Result) { |
| delete $output->{$name.':keys'}; |
$symbs_by_id{$_->[0]}=$_->[1]; |
| |
} |
| } |
} |
| |
return $symbs_by_id{$symb_id} if(exists( $symbs_by_id{$symb_id})); |
| |
return undef; # error |
| |
} |
| |
|
| my ($username,$domain)=split(':',$name); |
################################################ |
| |
################################################ |
| |
|
| my $Version; |
=pod |
| my $problemsCorrect = 0; |
|
| my $totalProblems = 0; |
|
| my $problemsSolved = 0; |
|
| my $numberOfParts = 0; |
|
| my $totalAwarded = 0; |
|
| foreach my $sequence (split(':', $data->{'orderedSequences'})) { |
|
| foreach my $problemID (split(':', $data->{$sequence.':problems'})) { |
|
| my $problem = $data->{$problemID.':problem'}; |
|
| my $LatestVersion = $input->{$name.':version:'.$problem}; |
|
| |
|
| # Output dashes for all the parts of this problem if there |
|
| # is no version information about the current problem. |
|
| $output->{$name.':'.$problemID.':NoVersion'} = 'false'; |
|
| $allkeys{$name.':'.$problemID.':NoVersion'}++; |
|
| if(!$LatestVersion) { |
|
| foreach my $part (split(/\:/,$data->{$sequence.':'. |
|
| $problemID. |
|
| ':parts'})) { |
|
| $output->{$name.':'.$problemID.':'.$part.':tries'} = 0; |
|
| $output->{$name.':'.$problemID.':'.$part.':awarded'} = 0; |
|
| $output->{$name.':'.$problemID.':'.$part.':code'} = ' '; |
|
| $allkeys{$name.':'.$problemID.':'.$part.':tries'}++; |
|
| $allkeys{$name.':'.$problemID.':'.$part.':awarded'}++; |
|
| $allkeys{$name.':'.$problemID.':'.$part.':code'}++; |
|
| $totalProblems++; |
|
| } |
|
| $output->{$name.':'.$problemID.':NoVersion'} = 'true'; |
|
| next; |
|
| } |
|
| |
|
| my %partData=undef; |
=item &get_student_id() |
| # Initialize part data, display skips correctly |
|
| # Skip refers to when a student made no submissions on that |
|
| # part/problem. |
|
| foreach my $part (split(/\:/,$data->{$sequence.':'. |
|
| $problemID. |
|
| ':parts'})) { |
|
| $partData{$part.':tries'}=0; |
|
| $partData{$part.':code'}=' '; |
|
| $partData{$part.':awarded'}=0; |
|
| $partData{$part.':timestamp'}=0; |
|
| foreach my $response (split(':', $data->{$sequence.':'. |
|
| $problemID.':'. |
|
| $part.':responseIDs'})) { |
|
| $partData{$part.':'.$response.':submission'}=''; |
|
| } |
|
| } |
|
| |
|
| # Looping through all the versions of each part, starting with the |
Get the MySQL id of a student. |
| # oldest version. Basically, it gets the most recent |
|
| # set of grade data for each part. |
|
| my @submissions = (); |
|
| for(my $Version=1; $Version<=$LatestVersion; $Version++) { |
|
| foreach my $part (split(/\:/,$data->{$sequence.':'. |
|
| $problemID. |
|
| ':parts'})) { |
|
| |
|
| if(!defined($input->{"$name:$Version:$problem". |
|
| ":resource.$part.solved"})) { |
|
| # No grade for this submission, so skip |
|
| next; |
|
| } |
|
| |
|
| my $tries=0; |
|
| my $code=' '; |
|
| my $awarded=0; |
|
| |
|
| $tries = $input->{$name.':'.$Version.':'.$problem. |
|
| ':resource.'.$part.'.tries'}; |
|
| $awarded = $input->{$name.':'.$Version.':'.$problem. |
|
| ':resource.'.$part.'.awarded'}; |
|
| |
|
| $partData{$part.':awarded'}=($awarded) ? $awarded : 0; |
|
| $partData{$part.':tries'}=($tries) ? $tries : 0; |
|
| |
|
| $partData{$part.':timestamp'}=$input->{$name.':'.$Version.':'. |
|
| $problem. |
|
| ':timestamp'}; |
|
| if(!$input->{$name.':'.$Version.':'.$problem.':resource.'.$part. |
|
| '.previous'}) { |
|
| foreach my $response (split(':', |
|
| $data->{$sequence.':'. |
|
| $problemID.':'. |
|
| $part.':responseIDs'})) { |
|
| @submissions=($input->{$name.':'.$Version.':'. |
|
| $problem. |
|
| ':resource.'.$part.'.'. |
|
| $response.'.submission'}, |
|
| @submissions); |
|
| } |
|
| } |
|
| |
|
| my $val = $input->{$name.':'.$Version.':'.$problem. |
|
| ':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 = ' ';} |
|
| $partData{$part.':code'}=$code; |
|
| } |
|
| } |
|
| |
|
| foreach my $part (split(/\:/,$data->{$sequence.':'.$problemID. |
Input: $sname, $dom |
| ':parts'})) { |
|
| $output->{$name.':'.$problemID.':'.$part.':wrong'} = |
|
| $partData{$part.':tries'}; |
|
| $allkeys{$name.':'.$problemID.':'.$part.':wrong'}++; |
|
| |
|
| if($partData{$part.':code'} eq '*') { |
|
| $output->{$name.':'.$problemID.':'.$part.':wrong'}--; |
|
| $problemsCorrect++; |
|
| } elsif($partData{$part.':code'} eq '+') { |
|
| $output->{$name.':'.$problemID.':'.$part.':wrong'}--; |
|
| $problemsCorrect++; |
|
| } |
|
| |
|
| $output->{$name.':'.$problemID.':'.$part.':tries'} = |
Output: undef on error, integer $student_id on success. |
| $partData{$part.':tries'}; |
|
| $output->{$name.':'.$problemID.':'.$part.':code'} = |
|
| $partData{$part.':code'}; |
|
| $output->{$name.':'.$problemID.':'.$part.':awarded'} = |
|
| $partData{$part.':awarded'}; |
|
| $allkeys{$name.':'.$problemID.':'.$part.':tries'}++; |
|
| $allkeys{$name.':'.$problemID.':'.$part.':code'}++; |
|
| $allkeys{$name.':'.$problemID.':'.$part.':awarded'}++; |
|
| |
|
| $totalAwarded += $partData{$part.':awarded'}; |
|
| $output->{$name.':'.$problemID.':'.$part.':timestamp'} = |
|
| $partData{$part.':timestamp'}; |
|
| $allkeys{$name.':'.$problemID.':'.$part.':timestamp'}++; |
|
| |
|
| foreach my $response (split(':', $data->{$sequence.':'. |
|
| $problemID.':'. |
|
| $part.':responseIDs'})) { |
|
| $output->{$name.':'.$problemID.':'.$part.':'.$response. |
|
| ':submission'}=join(':::',@submissions); |
|
| $allkeys{$name.':'.$problemID.':'.$part.':'.$response. |
|
| ':submission'}++; |
|
| } |
|
| |
|
| if($partData{$part.':code'} ne 'x') { |
=item &get_student() |
| $totalProblems++; |
|
| } |
|
| } |
|
| } |
|
| |
|
| $output->{$name.':'.$sequence.':problemsCorrect'} = $problemsCorrect; |
Get student username:domain associated with the MySQL student_id. |
| $allkeys{$name.':'.$sequence.':problemsCorrect'}++; |
|
| $problemsSolved += $problemsCorrect; |
|
| $problemsCorrect=0; |
|
| } |
|
| |
|
| $output->{$name.':problemsSolved'} = $problemsSolved; |
Input: $student_id |
| $output->{$name.':totalProblems'} = $totalProblems; |
|
| $output->{$name.':totalAwarded'} = $totalAwarded; |
|
| $allkeys{$name.':problemsSolved'}++; |
|
| $allkeys{$name.':totalProblems'}++; |
|
| $allkeys{$name.':totalAwarded'}++; |
|
| |
|
| $output->{$name.':keys'} = join(':::', keys(%allkeys)); |
Output: undef on error, string $student (username:domain) on success. |
| |
|
| return; |
=cut |
| } |
|
| |
|
| sub LoadDiscussion { |
################################################ |
| my ($courseID)=@_; |
################################################ |
| my %Discuss=(); |
|
| my %contrib=&Apache::lonnet::dump( |
|
| $courseID, |
|
| $ENV{'course.'.$courseID.'.domain'}, |
|
| $ENV{'course.'.$courseID.'.num'}); |
|
| |
|
| #my %contrib=&DownloadCourseInformation($name, $courseID, 0); |
|
| |
|
| foreach my $temp(keys %contrib) { |
my $have_read_student_table = 0; |
| if ($temp=~/^version/) { |
my %ids_by_student; |
| my $ver=$contrib{$temp}; |
my %students_by_id; |
| my ($dummy,$prb)=split(':',$temp); |
|
| for (my $idx=1; $idx<=$ver; $idx++ ) { |
sub get_student_id { |
| my $name=$contrib{"$idx:$prb:sendername"}; |
my ($sname,$sdom) = @_; |
| $Discuss{"$name:$prb"}=$idx; |
my $student = $sname.':'.$sdom; |
| } |
if (! $have_read_student_table) { |
| } |
my @Result = &Apache::lonmysql::get_rows($student_table); |
| } |
foreach (@Result) { |
| |
$ids_by_student{$_->[1]}=$_->[0]; |
| |
} |
| |
$have_read_student_table = 1; |
| |
} |
| |
if (! exists($ids_by_student{$student})) { |
| |
&Apache::lonmysql::store_row($student_table,[undef,$student]); |
| |
undef(%ids_by_student); |
| |
my @Result = &Apache::lonmysql::get_rows($student_table); |
| |
foreach (@Result) { |
| |
$ids_by_student{$_->[1]}=$_->[0]; |
| |
} |
| |
} |
| |
return $ids_by_student{$student} if(exists( $ids_by_student{$student})); |
| |
return undef; # error |
| |
} |
| |
|
| return \%Discuss; |
sub get_student { |
| |
my ($student_id) = @_; |
| |
if (! exists($students_by_id{$student_id}) || |
| |
! defined($students_by_id{$student_id}) || |
| |
$students_by_id{$student_id} eq '') { |
| |
my @Result = &Apache::lonmysql::get_rows($student_table); |
| |
foreach (@Result) { |
| |
$students_by_id{$_->[0]}=$_->[1]; |
| |
} |
| |
} |
| |
return $students_by_id{$student_id} if(exists($students_by_id{$student_id})); |
| |
return undef; # error |
| } |
} |
| |
|
| # ----- END PROCESSING FUNCTIONS --------------------------------------- |
################################################ |
| |
################################################ |
| |
|
| =pod |
=pod |
| |
|
| =head1 HELPER FUNCTIONS |
=item &update_student_data() |
| |
|
| These are just a couple of functions do various odd and end |
Input: $sname, $sdom, $courseid |
| jobs. There was also a couple of bulk functions added. These are |
|
| &DownloadStudentCourseData(), &DownloadStudentCourseDataSeparate(), and |
|
| &CheckForResidualDownload(). These functions now act as the interface |
|
| for downloading student course data. The statistical modules should |
|
| no longer make the calls to dump and download and process etc. They |
|
| make calls to these bulk functions to get their data. |
|
| |
|
| =cut |
Output: $returnstatus, \%student_data |
| |
|
| # ----- HELPER FUNCTIONS ----------------------------------------------- |
$returnstatus is a string describing any errors that occured. 'okay' is the |
| |
default. |
| |
\%student_data is the data returned by a call to lonnet::currentdump. |
| |
|
| |
This subroutine loads a students data using lonnet::currentdump and inserts |
| |
it into the MySQL database. The inserts are done on two tables, |
| |
$performance_table and $parameters_table. $parameters_table holds the data |
| |
that is not included in $performance_table. See the description of |
| |
$performance_table elsewhere in this file. The INSERT calls are made |
| |
directly by this subroutine, not through lonmysql because we do a 'bulk' |
| |
insert which takes advantage of MySQLs non-SQL compliant INSERT command to |
| |
insert multiple rows at a time. If anything has gone wrong during this |
| |
process, $returnstatus is updated with a description of the error and |
| |
\%student_data is returned. |
| |
|
| |
Notice we do not insert the data and immediately query it. This means it |
| |
is possible for there to be data returned this first time that is not |
| |
available the second time. CYA. |
| |
|
| sub CheckDateStampError { |
=cut |
| my ($courseData, $cache, $name)=@_; |
|
| if($courseData->{$name.':UpToDate'} eq 'true') { |
|
| $cache->{$name.':lastDownloadTime'} = |
|
| $courseData->{$name.':lastDownloadTime'}; |
|
| if($courseData->{$name.':lastDownloadTime'} eq 'Not downloaded') { |
|
| $cache->{$name.':updateTime'} = ' Not updated'; |
|
| } else { |
|
| $cache->{$name.':updateTime'}= |
|
| localtime($courseData->{$name.':lastDownloadTime'}); |
|
| } |
|
| return 0; |
|
| } |
|
| |
|
| $cache->{$name.':lastDownloadTime'}=$courseData->{$name.':lastDownloadTime'}; |
################################################ |
| if($courseData->{$name.':lastDownloadTime'} eq 'Not downloaded') { |
################################################ |
| $cache->{$name.':updateTime'} = ' Not updated'; |
sub update_student_data { |
| } else { |
my ($sname,$sdom,$courseid) = @_; |
| $cache->{$name.':updateTime'}= |
# |
| localtime($courseData->{$name.':lastDownloadTime'}); |
# Set up database names |
| |
&setup_table_names($courseid); |
| |
# |
| |
my $student_id = &get_student_id($sname,$sdom); |
| |
my $student = $sname.':'.$sdom; |
| |
# |
| |
my $returnstatus = 'okay'; |
| |
# |
| |
# Download students data |
| |
my $time_of_retrieval = time; |
| |
my @tmp = &Apache::lonnet::currentdump($courseid,$sdom,$sname); |
| |
if ((scalar(@tmp) > 0) && ($tmp[0] =~ /^error:/)) { |
| |
&Apache::lonnet::logthis('error getting data for '. |
| |
$sname.':'.$sdom.' in course '.$courseid. |
| |
':'.$tmp[0]); |
| |
$returnstatus = 'error getting data'; |
| |
return $returnstatus; |
| } |
} |
| |
if (scalar(@tmp) < 1) { |
| if(defined($courseData->{$name.':error'})) { |
return ('no data',undef); |
| $cache->{$name.':error'}=$courseData->{$name.':error'}; |
|
| return 0; |
|
| } |
} |
| |
my %student_data = @tmp; |
| return 1; |
# |
| |
# Remove all of the students data from the table |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
$dbh->do('DELETE FROM '.$performance_table.' WHERE student_id='. |
| |
$student_id); |
| |
$dbh->do('DELETE FROM '.$parameters_table.' WHERE student_id='. |
| |
$student_id); |
| |
# |
| |
# Store away the data |
| |
# |
| |
my $starttime = Time::HiRes::time; |
| |
my $elapsed = 0; |
| |
my $rows_stored; |
| |
my $store_parameters_command = 'INSERT INTO '.$parameters_table. |
| |
' VALUES '."\n"; |
| |
my $num_parameters = 0; |
| |
my $store_performance_command = 'INSERT INTO '.$performance_table. |
| |
' VALUES '."\n"; |
| |
return 'error' if (! defined($dbh)); |
| |
while (my ($current_symb,$param_hash) = each(%student_data)) { |
| |
# |
| |
# make sure the symb is set up properly |
| |
my $symb_id = &get_symb_id($current_symb); |
| |
# |
| |
# Load data into the tables |
| |
while (my ($parameter,$value) = each(%$param_hash)) { |
| |
my $newstring; |
| |
if ($parameter !~ /(timestamp|resource\.(.*)\.(solved|tries|awarded|award|awarddetail|previous))/) { |
| |
$newstring = "('".join("','", |
| |
$symb_id,$student_id, |
| |
$parameter)."',". |
| |
$dbh->quote($value)."),\n"; |
| |
$num_parameters ++; |
| |
if ($newstring !~ /''/) { |
| |
$store_parameters_command .= $newstring; |
| |
$rows_stored++; |
| |
} |
| |
} |
| |
next if ($parameter !~ /^resource\.(.*)\.solved$/); |
| |
# |
| |
my $part = $1; |
| |
my $part_id = &get_part_id($part); |
| |
next if (!defined($part_id)); |
| |
my $solved = $value; |
| |
my $tries = $param_hash->{'resource.'.$part.'.tries'}; |
| |
my $awarded = $param_hash->{'resource.'.$part.'.awarded'}; |
| |
my $award = $param_hash->{'resource.'.$part.'.award'}; |
| |
my $awarddetail = $param_hash->{'resource.'.$part.'.awarddetail'}; |
| |
my $timestamp = $param_hash->{'timestamp'}; |
| |
# |
| |
$solved = '' if (! defined($awarded)); |
| |
$tries = '' if (! defined($tries)); |
| |
$awarded = '' if (! defined($awarded)); |
| |
$award = '' if (! defined($award)); |
| |
$awarddetail = '' if (! defined($awarddetail)); |
| |
$newstring = "('".join("','",$symb_id,$student_id,$part_id, |
| |
$solved,$tries,$awarded,$award, |
| |
$awarddetail,$timestamp)."'),\n"; |
| |
$store_performance_command .= $newstring; |
| |
$rows_stored++; |
| |
} |
| |
} |
| |
chop $store_parameters_command; |
| |
chop $store_parameters_command; |
| |
chop $store_performance_command; |
| |
chop $store_performance_command; |
| |
my $start = Time::HiRes::time; |
| |
$dbh->do($store_parameters_command) if ($num_parameters>0); |
| |
if ($dbh->err()) { |
| |
&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; |
| |
} |
| |
$dbh->do($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; |
| |
} |
| |
$elapsed += Time::HiRes::time - $start; |
| |
# |
| |
# Set the students update time |
| |
&Apache::lonmysql::replace_row($updatetime_table, |
| |
[$student,$time_of_retrieval]); |
| |
return ($returnstatus,\%student_data); |
| } |
} |
| |
|
| |
################################################ |
| |
################################################ |
| |
|
| =pod |
=pod |
| |
|
| =item &ProcessFullName() |
=item &ensure_current_data() |
| |
|
| Takes lastname, generation, firstname, and middlename (or some partial |
Input: $sname, $sdom, $courseid |
| set of this data) and returns the full name version as a string. Format |
|
| is Lastname generation, firstname middlename or a subset of this. |
|
| |
|
| =cut |
Output: $status, $data |
| |
|
| sub ProcessFullName { |
This routine ensures the data for a given student is up to date. It calls |
| my ($lastname, $generation, $firstname, $middlename)=@_; |
&init_dbs() if the tables do not exist. The $updatetime_table is queried |
| my $Str = ''; |
to determine the time of the last update. If the students data is out of |
| |
date, &update_student_data() is called. The return values from the call |
| |
to &update_student_data() are returned. |
| |
|
| # Strip whitespace preceeding & following name components. |
=cut |
| $lastname =~ s/(\s+$|^\s+)//g; |
|
| $generation =~ s/(\s+$|^\s+)//g; |
|
| $firstname =~ s/(\s+$|^\s+)//g; |
|
| $middlename =~ s/(\s+$|^\s+)//g; |
|
| |
|
| if($lastname ne '') { |
################################################ |
| $Str .= $lastname; |
################################################ |
| $Str .= ' '.$generation if ($generation ne ''); |
sub ensure_current_data { |
| $Str .= ','; |
my ($sname,$sdom,$courseid) = @_; |
| $Str .= ' '.$firstname if ($firstname ne ''); |
my $status = 'okay'; # return value |
| $Str .= ' '.$middlename if ($middlename ne ''); |
# |
| } else { |
$courseid = $ENV{'request.course.id'} if (! defined($courseid)); |
| $Str .= $firstname if ($firstname ne ''); |
# |
| $Str .= ' '.$middlename if ($middlename ne ''); |
# Clean out package variables |
| $Str .= ' '.$generation if ($generation ne ''); |
&setup_table_names($courseid); |
| |
# |
| |
# if the tables do not exist, make them |
| |
my @CurrentTable = &Apache::lonmysql::tables_in_db(); |
| |
my ($found_symb,$found_student,$found_part,$found_update, |
| |
$found_performance,$found_parameters); |
| |
foreach (@CurrentTable) { |
| |
$found_symb = 1 if ($_ eq $symb_table); |
| |
$found_student = 1 if ($_ eq $student_table); |
| |
$found_part = 1 if ($_ eq $part_table); |
| |
$found_update = 1 if ($_ eq $updatetime_table); |
| |
$found_performance = 1 if ($_ eq $performance_table); |
| |
$found_parameters = 1 if ($_ eq $parameters_table); |
| |
} |
| |
if (!$found_symb || !$found_update || |
| |
!$found_student || !$found_part || |
| |
!$found_performance || !$found_parameters) { |
| |
if (&init_dbs($courseid)) { |
| |
return 'error'; |
| |
} |
| } |
} |
| |
# |
| return $Str; |
# Get the update time for the user |
| |
my $updatetime = 0; |
| |
my $modifiedtime = &Apache::lonnet::GetFileTimestamp |
| |
($sdom,$sname,$courseid.'.db', |
| |
$Apache::lonnet::perlvar{'lonUsersDir'}); |
| |
# |
| |
my $student = $sname.':'.$sdom; |
| |
my @Result = &Apache::lonmysql::get_rows($updatetime_table, |
| |
"student ='$student'"); |
| |
my $data = undef; |
| |
if (@Result) { |
| |
$updatetime = $Result[0]->[1]; |
| |
} |
| |
if ($modifiedtime > $updatetime) { |
| |
($status,$data) = &update_student_data($sname,$sdom,$courseid); |
| |
} |
| |
return ($status,$data); |
| } |
} |
| |
|
| |
################################################ |
| |
################################################ |
| |
|
| =pod |
=pod |
| |
|
| =item &TestCacheData() |
=item &get_student_data_from_performance_cache() |
| |
|
| Determine if the cache database can be accessed with a tie. It waits up to |
Input: $sname, $sdom, $symb, $courseid |
| ten seconds before returning failure. This function exists to help with |
|
| the problems with stopping the data download. When an abort occurs and the |
|
| user quickly presses a form button and httpd child is created. This |
|
| child needs to wait for the other to finish (hopefully within ten seconds). |
|
| |
|
| =over 4 |
Output: hash reference containing the data for the given student. |
| |
If $symb is undef, all the students data is returned. |
| |
|
| Input: $ChartDB |
This routine is the heart of the local caching system. See the description |
| |
of $performance_table, $symb_table, $student_table, and $part_table. The |
| |
main task is building the MySQL request. The tables appear in the request |
| |
in the order in which they should be parsed by MySQL. When searching |
| |
on a student the $student_table is used to locate the 'student_id'. All |
| |
rows in $performance_table which have a matching 'student_id' are returned, |
| |
with data from $part_table and $symb_table which match the entries in |
| |
$performance_table, 'part_id' and 'symb_id'. When searching on a symb, |
| |
the $symb_table is processed first, with matching rows grabbed from |
| |
$performance_table and filled in from $part_table and $student_table in |
| |
that order. |
| |
|
| $ChartDB: The name of the cache database to be opened |
Running 'EXPLAIN ' on the 'SELECT' statements generated can be quite |
| |
interesting, especially if you play with the order the tables are listed. |
| |
|
| Output: -1, 0, 1 |
=cut |
| |
|
| -1: Could not tie database |
################################################ |
| 0: Use cached data |
################################################ |
| 1: New cache database created, use that. |
sub get_student_data_from_performance_cache { |
| |
my ($sname,$sdom,$symb,$courseid)=@_; |
| |
my $student = $sname.':'.$sdom if (defined($sname) && defined($sdom)); |
| |
&setup_table_names($courseid); |
| |
# |
| |
# Return hash |
| |
my $studentdata; |
| |
# |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
my $request = "SELECT ". |
| |
"d.symb,c.part,a.solved,a.tries,a.awarded,a.award,a.awarddetail,". |
| |
"a.timestamp "; |
| |
if (defined($student)) { |
| |
$request .= "FROM $student_table AS b ". |
| |
"LEFT JOIN $performance_table AS a ON b.student_id=a.student_id ". |
| |
"LEFT JOIN $part_table AS c ON c.part_id = a.part_id ". |
| |
"LEFT JOIN $symb_table AS d ON d.symb_id = a.symb_id ". |
| |
"WHERE student='$student'"; |
| |
if (defined($symb) && $symb ne '') { |
| |
$request .= " AND d.symb=".$dbh->quote($symb); |
| |
} |
| |
} elsif (defined($symb) && $symb ne '') { |
| |
$request .= "FROM $symb_table as d ". |
| |
"LEFT JOIN $performance_table AS a ON d.symb_id=a.symb_id ". |
| |
"LEFT JOIN $part_table AS c ON c.part_id = a.part_id ". |
| |
"LEFT JOIN $student_table AS b ON b.student_id = a.student_id ". |
| |
"WHERE symb='".$dbh->quote($symb)."'"; |
| |
} |
| |
my $starttime = Time::HiRes::time; |
| |
my $rows_retrieved = 0; |
| |
my $sth = $dbh->prepare($request); |
| |
$sth->execute(); |
| |
if ($sth->err()) { |
| |
&Apache::lonnet::logthis("Unable to execute MySQL request:"); |
| |
&Apache::lonnet::logthis("\n".$request."\n"); |
| |
&Apache::lonnet::logthis("error is:".$sth->errstr()); |
| |
return undef; |
| |
} |
| |
foreach my $row (@{$sth->fetchall_arrayref}) { |
| |
$rows_retrieved++; |
| |
my ($symb,$part,$solved,$tries,$awarded,$award,$awarddetail,$time) = |
| |
(@$row); |
| |
my $base = 'resource.'.$part; |
| |
$studentdata->{$symb}->{$base.'.solved'} = $solved; |
| |
$studentdata->{$symb}->{$base.'.tries'} = $tries; |
| |
$studentdata->{$symb}->{$base.'.awarded'} = $awarded; |
| |
$studentdata->{$symb}->{$base.'.award'} = $award; |
| |
$studentdata->{$symb}->{$base.'.awarddetail'} = $awarddetail; |
| |
$studentdata->{$symb}->{'timestamp'} = $time if (defined($time) && $time ne ''); |
| |
} |
| |
if (defined($symb) && $symb ne '') { |
| |
$studentdata = $studentdata->{$symb}; |
| |
} |
| |
return $studentdata; |
| |
} |
| |
|
| =back |
################################################ |
| |
################################################ |
| |
|
| =cut |
=pod |
| |
|
| sub TestCacheData { |
=item &get_current_state() |
| my ($ChartDB,$isRecalculate,$totalDelay)=@_; |
|
| my $isCached=-1; |
|
| my %testData; |
|
| my $tieTries=0; |
|
| |
|
| if(!defined($totalDelay)) { |
Input: $sname,$sdom,$symb,$courseid |
| $totalDelay = 10; |
|
| } |
|
| |
|
| if ((-e "$ChartDB") && (!$isRecalculate)) { |
Output: Described below |
| $isCached = 1; |
|
| } else { |
|
| $isCached = 0; |
|
| } |
|
| |
|
| while($tieTries < $totalDelay) { |
Retrieve the current status of a students performance. $sname and |
| my $result=0; |
$sdom are the only required parameters. If $symb is undef the results |
| if($isCached) { |
of an &Apache::lonnet::currentdump() will be returned. |
| $result=tie(%testData,'GDBM_File',$ChartDB,&GDBM_READER(),0640); |
If $courseid is undef it will be retrieved from the environment. |
| |
|
| |
The return structure is based on &Apache::lonnet::currentdump. If |
| |
$symb is unspecified, all the students data is returned in a hash of |
| |
the form: |
| |
( |
| |
symb1 => { param1 => value1, param2 => value2 ... }, |
| |
symb2 => { param1 => value1, param2 => value2 ... }, |
| |
) |
| |
|
| |
If $symb is specified, a hash of |
| |
( |
| |
param1 => value1, |
| |
param2 => value2, |
| |
) |
| |
is returned. |
| |
|
| |
If no data is found for $symb, or if the student has no performance data, |
| |
an empty list is returned. |
| |
|
| |
=cut |
| |
|
| |
################################################ |
| |
################################################ |
| |
sub get_current_state { |
| |
my ($sname,$sdom,$symb,$courseid,$forcedownload)=@_; |
| |
# |
| |
$courseid = $ENV{'request.course.id'} if (! defined($courseid)); |
| |
# |
| |
return () if (! defined($sname) || ! defined($sdom)); |
| |
# |
| |
my ($status,$data) = &ensure_current_data($sname,$sdom,$courseid); |
| |
# |
| |
if (defined($data)) { |
| |
if (defined($symb)) { |
| |
return %{$data->{$symb}}; |
| } else { |
} else { |
| $result=tie(%testData,'GDBM_File',$ChartDB,&GDBM_NEWDB(),0640); |
return %$data; |
| } |
} |
| if($result) { |
} elsif ($status eq 'no data') { |
| last; |
return (); |
| |
} else { |
| |
if ($status ne 'okay' && $status ne '') { |
| |
&Apache::lonnet::logthis('status = '.$status); |
| |
return (); |
| } |
} |
| $tieTries++; |
my $returnhash = &get_student_data_from_performance_cache($sname,$sdom, |
| sleep 1; |
$symb,$courseid); |
| } |
return %$returnhash if (defined($returnhash)); |
| if($tieTries >= $totalDelay) { |
|
| return -1; |
|
| } |
} |
| |
return (); |
| |
} |
| |
|
| untie(%testData); |
################################################ |
| |
################################################ |
| |
|
| return $isCached; |
=pod |
| } |
|
| |
|
| sub DownloadStudentCourseData { |
=item &get_problem_statistics() |
| my ($students,$checkDate,$cacheDB,$extract,$status,$courseID,$r,$c)=@_; |
|
| |
|
| my $title = 'LON-CAPA Statistics'; |
Gather data on a given problem. The database is assumed to be |
| my $heading = 'Download and Process Course Data'; |
populated and all local caching variables are assumed to be set |
| my $studentCount = scalar(@$students); |
properly. This means you need to call &ensure_current_data for |
| |
the students you are concerned with prior to calling this routine. |
| |
|
| my $WhatIWant; |
Inputs: $students, $symb, $part, $courseid |
| $WhatIWant = '(^version:|'; |
|
| $WhatIWant .= '^\d+:.+?:(resource\.\d+\.'; |
|
| $WhatIWant .= '(solved|tries|previous|awarded|(\d+\.submission))\s*$'; |
|
| $WhatIWant .= '|timestamp)'; |
|
| $WhatIWant .= ')'; |
|
| # $WhatIWant = '.'; |
|
| |
|
| if($status eq 'true') { |
=over 4 |
| &Apache::lonhtmlcommon::Create_PrgWin($r, $title, $heading); |
|
| } |
|
| |
|
| my $displayString; |
=item $students is an array of hash references. |
| my $count=0; |
Each hash must contain at least the 'username' and 'domain' of a student. |
| foreach (@$students) { |
|
| my %cache; |
|
| |
|
| if($c->aborted()) { return 'Aborted'; } |
=item $symb is the symb for the problem. |
| |
|
| if($status eq 'true') { |
=item $part is the part id you need statistics for |
| $count++; |
|
| my $displayString = $count.'/'.$studentCount.': '.$_; |
|
| &Apache::lonhtmlcommon::Update_PrgWin($displayString, $r); |
|
| } |
|
| |
|
| my $downloadTime='Not downloaded'; |
=item $courseid is the course id, of course! |
| my $needUpdate = 'false'; |
|
| if($checkDate eq 'true' && |
|
| tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
|
| $downloadTime = $cache{$_.':lastDownloadTime'}; |
|
| $needUpdate = $cache{'ResourceUpdated'}; |
|
| untie(%cache); |
|
| } |
|
| |
|
| if($c->aborted()) { return 'Aborted'; } |
=back |
| |
|
| if($needUpdate eq 'true') { |
Outputs: See the code for up to date information. A hash reference is |
| $downloadTime = 'Not downloaded'; |
returned. The hash has the following keys defined: |
| } |
|
| my $courseData = |
|
| &DownloadCourseInformation($_, $courseID, $downloadTime, |
|
| $WhatIWant); |
|
| if(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT(),0640)) { |
|
| foreach my $key (keys(%$courseData)) { |
|
| if($key =~ /^(con_lost|error|no_such_host)/i) { |
|
| $courseData->{$_.':error'} = 'No course data for '.$_; |
|
| last; |
|
| } |
|
| } |
|
| if($extract eq 'true') { |
|
| &ExtractStudentData($courseData, \%cache, \%cache, $_); |
|
| } else { |
|
| &ProcessStudentData(\%cache, $courseData, $_); |
|
| } |
|
| untie(%cache); |
|
| } else { |
|
| next; |
|
| } |
|
| } |
|
| if($status eq 'true') { &Apache::lonhtmlcommon::Close_PrgWin($r); } |
|
| |
|
| return 'OK'; |
=over 4 |
| } |
|
| |
|
| sub DownloadStudentCourseDataSeparate { |
=item num_students The number of students attempting the problem |
| my ($students,$checkDate,$cacheDB,$extract,$status,$courseID,$r,$c)=@_; |
|
| my $residualFile = '/home/httpd/perl/tmp/'.$courseID.'DownloadFile.db'; |
=item tries The total number of tries for the students |
| my $title = 'LON-CAPA Statistics'; |
|
| my $heading = 'Download Course Data'; |
=item max_tries The maximum number of tries taken |
| |
|
| my $WhatIWant; |
=item mean_tries The average number of tries |
| $WhatIWant = '(^version:|'; |
|
| $WhatIWant .= '^\d+:.+?:(resource\.\d+\.'; |
=item num_solved The number of students able to solve the problem |
| $WhatIWant .= '(solved|tries|previous|awarded|(\d+\.submission))\s*$'; |
|
| $WhatIWant .= '|timestamp)'; |
=item num_override The number of students whose answer is 'correct_by_override' |
| $WhatIWant .= ')'; |
|
| |
=item deg_of_diff The degree of difficulty of the problem |
| &CheckForResidualDownload($cacheDB, 'true', 'true', $courseID, $r, $c); |
|
| |
=item std_tries The standard deviation of the number of tries |
| my $studentCount = scalar(@$students); |
|
| if($status eq 'true') { |
=item skew_tries The skew of the number of tries |
| &Apache::lonhtmlcommon::Create_PrgWin($r, $title, $heading); |
|
| } |
|
| my $count=0; |
|
| my $displayString=''; |
|
| foreach (@$students) { |
|
| if($c->aborted()) { |
|
| return 'Aborted'; |
|
| } |
|
| |
|
| if($status eq 'true') { |
=item per_wrong The number of students attempting the problem who were not |
| $count++; |
able to answer it correctly. |
| $displayString = $count.'/'.$studentCount.': '.$_; |
|
| &Apache::lonhtmlcommon::Update_PrgWin($displayString, $r); |
|
| } |
|
| |
|
| my %cache; |
=back |
| my $downloadTime='Not downloaded'; |
|
| my $needUpdate = 'false'; |
|
| if($checkDate eq 'true' && |
|
| tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
|
| $downloadTime = $cache{$_.':lastDownloadTime'}; |
|
| $needUpdate = $cache{'ResourceUpdated'}; |
|
| untie(%cache); |
|
| } |
|
| |
|
| if($c->aborted()) { |
=cut |
| return 'Aborted'; |
|
| } |
|
| |
|
| if($needUpdate eq 'true') { |
################################################ |
| $downloadTime = 'Not downloaded'; |
################################################ |
| } |
sub get_problem_statistics { |
| |
my ($students,$symb,$part,$courseid) = @_; |
| |
return if (! defined($symb) || ! defined($part)); |
| |
$courseid = $ENV{'request.course.id'} if (! defined($courseid)); |
| |
# |
| |
my $symb_id = &get_symb_id($symb); |
| |
my $part_id = &get_part_id($part); |
| |
my $stats_table = $courseid.'_problem_stats'; |
| |
# |
| |
my $dbh = &Apache::lonmysql::get_dbh(); |
| |
return undef if (! defined($dbh)); |
| |
# |
| |
# A) Number of Students attempting problem |
| |
# B) Total number of tries of students attempting problem |
| |
# C) Mod (largest number of tries for solving the problem) |
| |
# D) Mean (average number of tries for solving the problem) |
| |
# E) Number of students to solve the problem |
| |
# F) Number of students to solve the problem by override |
| |
# G) Number of students unable to solve the problem |
| |
# H) Degree of difficulty : 1-(E+F)/B |
| |
# I) Standard deviation of number of tries |
| |
# J) Skew of tries: sqrt(sum(Xi-D)^3)/A |
| |
# |
| |
$dbh->do('DROP TABLE '.$stats_table); # May return an error |
| |
my $request = |
| |
'CREATE TEMPORARY TABLE '.$stats_table. |
| |
' SELECT student_id,solved,award,tries FROM '.$performance_table. |
| |
' WHERE symb_id='.$symb_id.' AND part_id='.$part_id; |
| |
if (defined($students)) { |
| |
$request .= ' AND ('. |
| |
join(' OR ', map {'student_id='. |
| |
&get_student_id($_->{'username'}, |
| |
$_->{'domain'}) |
| |
} @$students |
| |
).')'; |
| |
} |
| |
# &Apache::lonnet::logthis($request); |
| |
$dbh->do($request); |
| |
my ($num,$tries,$mod,$mean,$STD) = &execute_SQL_request |
| |
($dbh, |
| |
'SELECT COUNT(*),SUM(tries),MAX(tries),AVG(tries),STD(tries) FROM '. |
| |
$stats_table); |
| |
my ($Solved) = &execute_SQL_request($dbh,'SELECT COUNT(tries) FROM '. |
| |
$stats_table. |
| |
" WHERE solved='correct_by_student'"); |
| |
my ($solved) = &execute_SQL_request($dbh,'SELECT COUNT(tries) FROM '. |
| |
$stats_table. |
| |
" WHERE solved='correct_by_override'"); |
| |
$num = 0 if (! defined($num)); |
| |
$tries = 0 if (! defined($tries)); |
| |
$mod = 0 if (! defined($mod)); |
| |
$STD = 0 if (! defined($STD)); |
| |
$Solved = 0 if (! defined($Solved)); |
| |
$solved = 0 if (! defined($solved)); |
| |
# |
| |
my $DegOfDiff = 'nan'; |
| |
$DegOfDiff = 1-($Solved)/$tries if ($tries>0); |
| |
|
| my $error = 0; |
my $SKEW = 'nan'; |
| my $courseData = |
my $wrongpercent = 0; |
| &DownloadCourseInformation($_, $courseID, $downloadTime, |
if ($num > 0) { |
| $WhatIWant); |
($SKEW) = &execute_SQL_request($dbh,'SELECT SQRT(SUM('. |
| my %downloadData; |
'POWER(tries - '.$STD.',3)'. |
| unless(tie(%downloadData,'GDBM_File',$residualFile, |
'))/'.$num.' FROM '.$stats_table); |
| &GDBM_WRCREAT(),0640)) { |
$wrongpercent=int(10*100*($num-$Solved+$solved)/$num)/10; |
| return 'Failed to tie temporary download hash.'; |
|
| } |
|
| foreach my $key (keys(%$courseData)) { |
|
| $downloadData{$key} = $courseData->{$key}; |
|
| if($key =~ /^(con_lost|error|no_such_host)/i) { |
|
| $error = 1; |
|
| last; |
|
| } |
|
| } |
|
| if($error) { |
|
| foreach my $deleteKey (keys(%$courseData)) { |
|
| delete $downloadData{$deleteKey}; |
|
| } |
|
| $downloadData{$_.':error'} = 'No course data for '.$_; |
|
| } |
|
| untie(%downloadData); |
|
| } |
} |
| if($status eq 'true') { &Apache::lonhtmlcommon::Close_PrgWin($r); } |
# |
| |
$dbh->do('DROP TABLE '.$stats_table); # May return an error |
| |
return { num_students => $num, |
| |
tries => $tries, |
| |
max_tries => $mod, |
| |
mean_tries => $mean, |
| |
std_tries => $STD, |
| |
skew_tries => $SKEW, |
| |
num_solved => $Solved, |
| |
num_override => $solved, |
| |
per_wrong => $wrongpercent, |
| |
deg_of_diff => $DegOfDiff } |
| |
} |
| |
|
| return &CheckForResidualDownload($cacheDB, 'true', 'true', |
sub execute_SQL_request { |
| $courseID, $r, $c); |
my ($dbh,$request)=@_; |
| |
# &Apache::lonnet::logthis($request); |
| |
my $sth = $dbh->prepare($request); |
| |
$sth->execute(); |
| |
my $row = $sth->fetchrow_arrayref(); |
| |
if (ref($row) eq 'ARRAY' && scalar(@$row)>0) { |
| |
return @$row; |
| |
} |
| |
return (); |
| } |
} |
| |
|
| sub CheckForResidualDownload { |
|
| my ($cacheDB,$extract,$status,$courseID,$r,$c)=@_; |
|
| |
|
| my $residualFile = '/home/httpd/perl/tmp/'.$courseID.'DownloadFile.db'; |
################################################ |
| if(!-e $residualFile) { |
################################################ |
| return 'OK'; |
|
| } |
|
| |
|
| my %downloadData; |
=pod |
| my %cache; |
|
| unless(tie(%downloadData,'GDBM_File',$residualFile,&GDBM_READER(),0640)) { |
=item &setup_table_names() |
| return 'Can not tie database for check for residual download: tempDB'; |
|
| |
input: course id |
| |
|
| |
output: none |
| |
|
| |
Cleans up the package variables for local caching. |
| |
|
| |
=cut |
| |
|
| |
################################################ |
| |
################################################ |
| |
sub setup_table_names { |
| |
my ($courseid) = @_; |
| |
if (! defined($courseid)) { |
| |
$courseid = $ENV{'request.course.id'}; |
| } |
} |
| unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT(),0640)) { |
# |
| untie(%downloadData); |
if (! defined($current_course) || $current_course ne $courseid) { |
| return 'Can not tie database for check for residual download: cacheDB'; |
# Clear out variables |
| |
$have_read_part_table = 0; |
| |
undef(%ids_by_part); |
| |
undef(%parts_by_id); |
| |
$have_read_symb_table = 0; |
| |
undef(%ids_by_symb); |
| |
undef(%symbs_by_id); |
| |
$have_read_student_table = 0; |
| |
undef(%ids_by_student); |
| |
undef(%students_by_id); |
| |
# |
| |
$current_course = $courseid; |
| } |
} |
| |
# |
| |
# Set up database names |
| |
my $base_id = $courseid; |
| |
$symb_table = $base_id.'_'.'symb'; |
| |
$part_table = $base_id.'_'.'part'; |
| |
$student_table = $base_id.'_'.'student'; |
| |
$updatetime_table = $base_id.'_'.'updatetime'; |
| |
$performance_table = $base_id.'_'.'performance'; |
| |
$parameters_table = $base_id.'_'.'parameters'; |
| |
return; |
| |
} |
| |
|
| my @students=(); |
################################################ |
| my %checkStudent; |
################################################ |
| my $key; |
|
| while(($key, undef) = each %downloadData) { |
|
| my @temp = split(':', $key); |
|
| my $student = $temp[0].':'.$temp[1]; |
|
| if(!defined($checkStudent{$student})) { |
|
| $checkStudent{$student}++; |
|
| push(@students, $student); |
|
| } |
|
| } |
|
| |
|
| my $heading = 'Process Course Data'; |
=pod |
| my $title = 'LON-CAPA Statistics'; |
|
| my $studentCount = scalar(@students); |
|
| if($status eq 'true') { |
|
| &Apache::lonhtmlcommon::Create_PrgWin($r, $title, $heading); |
|
| } |
|
| |
|
| my $count=1; |
=back |
| foreach my $name (@students) { |
|
| last if($c->aborted()); |
|
| |
|
| if($status eq 'true') { |
|
| my $displayString = $count.'/'.$studentCount.': '.$name; |
|
| &Apache::lonhtmlcommon::Update_PrgWin($displayString, $r); |
|
| } |
|
| |
|
| if($extract eq 'true') { |
=item End of Local Data Caching Subroutines |
| &ExtractStudentData(\%downloadData, \%cache, \%cache, $name); |
|
| } else { |
|
| &ProcessStudentData(\%cache, \%downloadData, $name); |
|
| } |
|
| $count++; |
|
| } |
|
| |
|
| if($status eq 'true') { &Apache::lonhtmlcommon::Close_PrgWin($r); } |
=cut |
| |
|
| untie(%cache); |
################################################ |
| untie(%downloadData); |
################################################ |
| |
|
| if(!$c->aborted()) { |
|
| my @files = ($residualFile); |
|
| unlink(@files); |
|
| } |
|
| |
|
| return 'OK'; |
|
| } |
} |
| |
|
| ################################################ |
################################################ |
| ################################################ |
################################################ |
| |
|
| =pod |
=pod |
| |
|
| |
=head3 Classlist Subroutines |
| |
|
| =item &get_classlist(); |
=item &get_classlist(); |
| |
|
| Retrieve the classist of a given class or of the current class. Student |
Retrieve the classist of a given class or of the current class. Student |
|
Line 1405 $ENV{'course.'.$cid.'.domain'}, and $ENV
|
Line 1444 $ENV{'course.'.$cid.'.domain'}, and $ENV
|
| |
|
| Returns a reference to a hash which contains: |
Returns a reference to a hash which contains: |
| keys '$sname:$sdom' |
keys '$sname:$sdom' |
| values [$end,$start,$id,$section,$fullname] |
values [$sdom,$sname,$end,$start,$id,$section,$fullname,$status] |
| |
|
| |
The constant values CL_SDOM, CL_SNAME, CL_END, etc. can be used |
| |
as indices into the returned list to future-proof clients against |
| |
changes in the list order. |
| |
|
| =cut |
=cut |
| |
|
| ################################################ |
################################################ |
| ################################################ |
################################################ |
| |
|
| |
sub CL_SDOM { return 0; } |
| |
sub CL_SNAME { return 1; } |
| |
sub CL_END { return 2; } |
| |
sub CL_START { return 3; } |
| |
sub CL_ID { return 4; } |
| |
sub CL_SECTION { return 5; } |
| |
sub CL_FULLNAME { return 6; } |
| |
sub CL_STATUS { return 7; } |
| |
|
| sub get_classlist { |
sub get_classlist { |
| my ($cid,$cdom,$cnum) = @_; |
my ($cid,$cdom,$cnum) = @_; |
| $cid = $cid || $ENV{'request.course.id'}; |
$cid = $cid || $ENV{'request.course.id'}; |
| $cdom = $cdom || $ENV{'course.'.$cid.'.domain'}; |
$cdom = $cdom || $ENV{'course.'.$cid.'.domain'}; |
| $cnum = $cnum || $ENV{'course.'.$cid.'.num'}; |
$cnum = $cnum || $ENV{'course.'.$cid.'.num'}; |
| my $now = time; |
my $now = time; |
| # |
# |
| my %classlist=&Apache::lonnet::dump('classlist',$cdom,$cnum); |
my %classlist=&Apache::lonnet::dump('classlist',$cdom,$cnum); |
| while (my ($student,$info) = each(%classlist)) { |
while (my ($student,$info) = each(%classlist)) { |
| return undef if ($student =~ /^(con_lost|error|no_such_host)/i); |
if ($student =~ /^(con_lost|error|no_such_host)/i) { |
| |
&Apache::lonnet::logthis('get_classlist error for '.$cid.':'.$student); |
| |
return undef; |
| |
} |
| my ($sname,$sdom) = split(/:/,$student); |
my ($sname,$sdom) = split(/:/,$student); |
| my @Values = split(/:/,$info); |
my @Values = split(/:/,$info); |
| my ($end,$start,$id,$section,$fullname); |
my ($end,$start,$id,$section,$fullname); |
|
Line 1429 sub get_classlist {
|
Line 1484 sub get_classlist {
|
| ($end,$start,$id,$section,$fullname) = @Values; |
($end,$start,$id,$section,$fullname) = @Values; |
| } else { # We have to get the data ourselves |
} else { # We have to get the data ourselves |
| ($end,$start) = @Values; |
($end,$start) = @Values; |
| $section = &Apache::lonnet::usection($sdom,$sname,$cid); |
$section = &Apache::lonnet::getsection($sdom,$sname,$cid); |
| my %info=&Apache::lonnet::get('environment', |
my %info=&Apache::lonnet::get('environment', |
| ['firstname','middlename', |
['firstname','middlename', |
| 'lastname','generation','id'], |
'lastname','generation','id'], |
|
Line 1438 sub get_classlist {
|
Line 1493 sub get_classlist {
|
| if ($tmp =~/^(con_lost|error|no_such_host)/i) { |
if ($tmp =~/^(con_lost|error|no_such_host)/i) { |
| $fullname = 'not available'; |
$fullname = 'not available'; |
| $id = 'not available'; |
$id = 'not available'; |
| |
&Apache::lonnet::logthis('unable to retrieve environment '. |
| |
'for '.$sname.':'.$sdom); |
| } else { |
} else { |
| $fullname = &ProcessFullName(@info{qw/lastname generation |
$fullname = &ProcessFullName(@info{qw/lastname generation |
| firstname middlename/}); |
firstname middlename/}); |
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