# The LearningOnline Network with CAPA
# Metadata display handler
#
# $Id: lonmeta.pm,v 1.10 2001/12/24 17:13:11 www Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
# (TeX Content Handler
#
# 05/29/00,05/30,10/11 Gerd Kortemeyer)
#
# 10/19,10/21,10/23,11/27,08/09/01,12/22,12/24 Gerd Kortemeyer
package Apache::lonmeta;
use strict;
use Apache::Constants qw(:common);
use Apache::lonnet();
use Apache::loncommon();
# ----------------------------------------- Fetch and evaluate dynamic metadata
sub dynamicmeta {
my $url=&Apache::lonnet::declutter(shift);
$url=~s/\.meta$//;
my ($adomain,$aauthor)=($url=~/^(\w+)\/(\w+)\//);
my $regexp=&Apache::lonnet::escape($url);
$regexp=~s/(\W)/\\$1/g;
$regexp='___'.$regexp.'___';
my %evaldata=&Apache::lonnet::dump
('resevaldata',$adomain,$aauthor,$regexp);
my %sum;
my %cnt;
my %listitems=('count' => 'add',
'course' => 'add',
'avetries' => 'avg',
'stdno' => 'add',
'difficulty' => 'avg',
'clear' => 'avg',
'technical' => 'avg',
'helpful' => 'avg',
'correct' => 'avg',
'depth' => 'avg',
'comments' => 'app',
'usage' => 'cnt'
);
foreach (keys %evaldata) {
$_=~/___(\w+)$/;
if (defined($cnt{$1})) { $cnt{$1}++; } else { $cnt{$1}=1; }
unless ($listitems{$1} eq 'app') {
if (defined($sum{$1})) {
$sum{$1}+=$evaldata{$_};
} else {
$sum{$1}=$evaldata{$_};
}
} else {
if (defined($sum{$1})) {
if ($evaldata{$_}) {
$sum{$1}.='
'.$evaldata{$_};
}
} else {
$sum{$1}=''.$evaldata{$_};
}
}
}
my %returnhash=();
foreach (keys %cnt) {
}
return %returnhash;
}
# ================================================================ Main Handler
sub handler {
my $r=shift;
my %content=();
# ----------------------------------------------------------- Set document type
$r->content_type('text/html');
$r->send_http_header;
return OK if $r->header_only;
# ------------------------------------------------------------------- Read file
my $uri=$r->uri;
map {
$content{$_}=&Apache::lonnet::metadata($uri,$_);
} split(/\,/,&Apache::lonnet::metadata($uri,'keys'));
# ------------------------------------------------------------------ Hide stuff
unless ($ENV{'user.adv'}) {
map {
$content{$_}='- not displayed -';
} ('keywords','notes','abstract','subject');
}
# --------------------------------------------------------------- Render Output
my $creationdate=localtime($content{'creationdate'});
my $lastrevisiondate=localtime($content{'lastrevisiondate'});
my $language=&Apache::loncommon::languagedescription($content{'language'});
my $mime=&Apache::loncommon::filedescription($content{'mime'});
$r->print(<Catalog Information
Catalog Information
$content{'title'}
Author(s): $content{'author'}
Subject: $content{'subject'}
Keyword(s): $content{'keywords'}
Notes: $content{'notes'}
Abstract:
$content{'abstract'}
MIME Type: $mime ($content{'mime'})
Language: $language
Creation Date: $creationdate
Last Revision Date: $lastrevisiondate
Publisher/Owner: $content{'owner'}
Copyright/Distribution: $content{'copyright'}
ENDHEAD
delete($content{'title'});
delete($content{'author'});
delete($content{'subject'});
delete($content{'keywords'});
delete($content{'notes'});
delete($content{'abstract'});
delete($content{'mime'});
delete($content{'language'});
delete($content{'creationdate'});
delete($content{'lastrevisiondate'});
delete($content{'owner'});
delete($content{'copyright'});
if ($ENV{'user.adv'}) {
$r->print('Dynamic Metadata (updated periodically)
');
my %items=(
'count' => 'Network-wide number of accesses (hits)',
'course' => 'Network-wide number of courses using resource',
'usage' => 'Number of resources using or importing resource',
'clear' => 'Evaluation: presented in clear way',
'depth' => 'Evaluation: material covered with sufficient depth',
'helpful' => 'Evaluation: material is helpful',
'correct' => 'Evaluation: material appears to be correct',
'technical' => 'Evaluation: material is technically correct',
'avetries' => 'Average number of tries till solved',
'stdno' => 'Total number of students who have worked on this problem',
'difficulty' => 'Degree of difficulty');
my %dynmeta=&dynamicmeta($uri);
$r->print('Access and Usage Statistics
');
foreach ('count','usage','course') {
$r->print(''.$items{$_}.':'."
\n");
}
if ($uri=~/\.(problem|exam|quiz|assess|survey|form)\.meta$/) {
$r->print('Assessment Statistical Data
');
foreach ('stdno','avetries','difficulty') {
$r->print(''.$items{$_}.':'."
\n");
}
}
$r->print('Evaluation Data
');
foreach ('clear','depth','helpful','correct','technical') {
$r->print(''.$items{$_}.':'."
\n");
}
&Apache::lonnet::declutter($uri)=~/^(\w+)\/(\w+)\//;
if ((($ENV{'user.domain'} eq $1) && ($ENV{'user.name'} eq $2))
|| ($ENV{'user.role.ca./'.$1.'/'.$2})) {
$r->print(
'Evaluation Comments (visible to author and co-authors only)
'.
$dynmeta{'comments'});
}
$r->print(
'Additional Metadata (non-standard, parameters, exports)
');
foreach (sort keys %content) {
my $name=$_;
my $display=&Apache::lonnet::metadata($uri,$name.'.display');
unless ($display) { $display=$name; };
my $otherinfo='';
map {
if (defined(&Apache::lonnet::metadata($uri,$name.'.'.$_))) {
$otherinfo.=' '.$_.'='.
&Apache::lonnet::metadata($uri,$name.'.'.$_).'; ';
}
} ('name','part','type','default');
$r->print(''.$display.': '.$content{$name});
if ($otherinfo) {
$r->print(' ('.$otherinfo.')');
}
$r->print("
\n");
}
}
$r->print('