--- loncom/interface/lonmeta.pm 2002/08/09 19:49:30 1.16 +++ loncom/interface/lonmeta.pm 2005/12/19 16:00:05 1.140 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # Metadata display handler # -# $Id: lonmeta.pm,v 1.16 2002/08/09 19:49:30 albertel Exp $ +# $Id: lonmeta.pm,v 1.140 2005/12/19 16:00:05 banghart Exp $ # # Copyright Michigan State University Board of Trustees # @@ -17,292 +17,1210 @@ # 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 +# 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) -# -# 10/19,10/21,10/23,11/27,08/09/01,12/22,12/24,12/25 Gerd Kortemeyer + package Apache::lonmeta; use strict; +use LONCAPA::lonmetadata(); use Apache::Constants qw(:common); -use Apache::lonnet(); +use Apache::lonnet; use Apache::loncommon(); +use Apache::lonhtmlcommon(); +use Apache::lonmsg; +use Apache::lonpublisher; +use Apache::lonlocal; +use Apache::lonmysql; +use Apache::lonmsg; + + +############################################################ +############################################################ +## +## &get_dynamic_metadata_from_sql($url) +## +## Queries sql database for dynamic metdata +## Returns a hash of hashes, with keys of urls which match $url +## Returned fields are given below. +## +## Examples: +## +## %DynamicMetadata = &Apache::lonmeta::get_dynmaic_metadata_from_sql +## ('/res/msu/korte/'); +## +## $DynamicMetadata{'/res/msu/korte/example.problem'}->{$field} +## +############################################################ +############################################################ +sub get_dynamic_metadata_from_sql { + my ($url) = shift(); + my ($authordom,$author)=($url=~m:^/res/(\w+)/(\w+)/:); + if (! defined($authordom)) { + $authordom = shift(); + } + if (! defined($author)) { + $author = shift(); + } + if (! defined($authordom) || ! defined($author)) { + return (); + } + my @Fields = ('url','count','course', + 'goto','goto_list', + 'comefrom','comefrom_list', + 'sequsage','sequsage_list', + 'stdno','stdno_list', + 'dependencies', + 'avetries','avetries_list', + 'difficulty','difficulty_list', + 'disc','disc_list', + 'clear','technical','correct', + 'helpful','depth'); + # + my $query = 'SELECT '.join(',',@Fields). + ' FROM metadata WHERE url LIKE "'.$url.'%"'; + my $server = &Apache::lonnet::homeserver($author,$authordom); + my $reply = &Apache::lonnet::metadata_query($query,undef,undef, + ,[$server]); + return () if (! defined($reply) || ref($reply) ne 'HASH'); + my $filename = $reply->{$server}; + if (! defined($filename) || $filename =~ /^error/) { + return (); + } + my $max_time = time + 10; # wait 10 seconds for results at most + my %ReturnHash; + # + # Look for results + my $finished = 0; + while (! $finished && time < $max_time) { + my $datafile=$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename; + if (! -e "$datafile.end") { next; } + my $fh; + if (!($fh=Apache::File->new($datafile))) { next; } + while (my $result = <$fh>) { + chomp($result); + next if (! $result); + my @Data = + map { + &Apache::lonnet::unescape($_); + } split(',',$result); + my $url = $Data[0]; + for (my $i=0;$i<=$#Fields;$i++) { + $ReturnHash{$url}->{$Fields[$i]}=$Data[$i]; + } + } + $finished = 1; + } + # + return %ReturnHash; +} -# ----------------------------------------- Fetch and evaluate dynamic metadata +# 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); + my $regexp=$url; $regexp=~s/(\W)/\\$1/g; $regexp='___'.$regexp.'___'; my %evaldata=&Apache::lonnet::dump('nohist_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}.='
  | '; + $output.='  | '; } else { - $output.=''. - ' | '; + $output.=' | '. + ' | '; } $output.=' | '; if ($val>20) { - $output.=' | '. - ' | '; + $output.=' | '. + ' | '; } else { - $output.=' |   | '; + $output.='  | '; } - $output.='('.$value.') |
'; + $output.=' | '; } else { - $output.=' | '; + $output.=' | '; } } - $output.=' | ('.$value.') |
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 | -$content{'copyright'}
+sub prettyinput {
+ my ($type,$value,$fieldname,$formname,
+ $relatedsearchflag,$relatedsep,$relatedvalue,$size,$course_key)=@_;
+ if (! defined($size)) {
+ $size = 80;
+ }
+ my $output;
+ if (defined($course_key)) {
+ my $stu_add;
+ my $only_one;
+ my %meta_options;
+ my @cur_values_inst;
+ my $cur_values_stu;
+ my $values = $env{$course_key.'.metadata.'.$type.'.values'};
+ if ($env{$course_key.'.metadata.'.$type.'.options'} =~ m/stuadd/) {
+ $stu_add = 'true';
+ }
+ if ($env{$course_key.'.metadata.'.$type.'.options'} =~ m/onlyone/) {
+ $only_one = 'true';
+ }
+ # need to take instructor values out of list where instructor and student
+ # values may be mixed.
+ if ($values) {
+ foreach my $item (split(/,/,$values)) {
+ $item =~ s/^\s+//;
+ $meta_options{$item} = $item;
+ }
+ foreach my $item (split(/,/,$value)) {
+ $item =~ s/^\s+//;
+ if ($meta_options{$item}) {
+ push(@cur_values_inst,$item);
+ } else {
+ $cur_values_stu .= $item.',';
+ }
+ }
+ } else {
+ $cur_values_stu = $value;
+ }
+ if ($type eq 'courserestricted') {
+ return (&select_course());
+ # return ('');
+ }
+ if (($type eq 'keywords') || ($type eq 'subject')
+ || ($type eq 'author')||($type eq 'notes')
+ || ($type eq 'abstract')|| ($type eq 'title')|| ($type eq 'standards')) {
+ if ($values) {
+ if ($only_one) {
+ $output .= (&Apache::loncommon::select_form($cur_values_inst[0],'new_'.$type,%meta_options));
+ } else {
+ $output .= (&Apache::loncommon::multiple_select_form('new_'.$type,\@cur_values_inst,undef,\%meta_options));
+ }
+ }
+ if ($stu_add) {
+ $output .= ''.
+ &relatedfield(1,$relatedsearchflag,$relatedsep,$fieldname,
+ $relatedvalue);
+ }
+ return ($output);
+ }
+ if (($type eq 'lowestgradelevel') ||
+ ($type eq 'highestgradelevel')) {
+ return &Apache::loncommon::select_level_form($value,$fieldname).
+ &relatedfield(0,$relatedsearchflag,$relatedsep);
+ }
+ return();
+ }
+ # Language
+ if ($type eq 'language') {
+ return &selectbox($fieldname,
+ $value,
+ \&Apache::loncommon::languagedescription,
+ (&Apache::loncommon::languageids)).
+ &relatedfield(0,$relatedsearchflag,$relatedsep);
+ }
+ # Copyright
+ if ($type eq 'copyright') {
+ return &selectbox($fieldname,
+ $value,
+ \&Apache::loncommon::copyrightdescription,
+ (&Apache::loncommon::copyrightids)).
+ &relatedfield(0,$relatedsearchflag,$relatedsep);
+ }
+ # Source Copyright
+ if ($type eq 'sourceavail') {
+ return &selectbox($fieldname,
+ $value,
+ \&Apache::loncommon::source_copyrightdescription,
+ (&Apache::loncommon::source_copyrightids)).
+ &relatedfield(0,$relatedsearchflag,$relatedsep);
+ }
+ # Gradelevels
+ if (($type eq 'lowestgradelevel') ||
+ ($type eq 'highestgradelevel')) {
+ return &Apache::loncommon::select_level_form($value,$fieldname).
+ &relatedfield(0,$relatedsearchflag,$relatedsep);
+ }
+ # Obsolete
+ if ($type eq 'obsolete') {
+ return ''.
+ &relatedfield(0,$relatedsearchflag,$relatedsep);
+ }
+ # Obsolete replacement file
+ if ($type eq 'obsoletereplacement') {
+ return '".&mt('Select').''.
+ &relatedfield(0,$relatedsearchflag,$relatedsep);
+ }
+ # Customdistribution file
+ if ($type eq 'customdistributionfile') {
+ return '".&mt('Select').''.
+ &relatedfield(0,$relatedsearchflag,$relatedsep);
+ }
+ # Source Customdistribution file
+ if ($type eq 'sourcerights') {
+ return '".&mt('Select').''.
+ &relatedfield(0,$relatedsearchflag,$relatedsep);
+ }
+ if ($type eq 'courserestricted') {
+ return (&select_course());
+ #return ('');
+ }
+
+ # Dates
+ if (($type eq 'creationdate') ||
+ ($type eq 'lastrevisiondate')) {
+ return
+ &Apache::lonhtmlcommon::date_setter($formname,$fieldname,$value).
+ &relatedfield(0,$relatedsearchflag,$relatedsep);
+ }
+ # No pretty input found
+ $value=~s/^\s+//gs;
+ $value=~s/\s+$//gs;
+ $value=~s/\s+/ /gs;
+ $value=~s/\"/\"\;/gs;
+ return
+ ''.
+ &relatedfield(1,$relatedsearchflag,$relatedsep,$fieldname,
+ $relatedvalue);
+}
+
+# Main Handler
+sub handler {
+ my $r=shift;
+ #
+ my $uri=$r->uri;
+ #
+ # Set document type
+ &Apache::loncommon::content_type($r,'text/html');
+ $r->send_http_header;
+ return OK if $r->header_only;
+ #
+ my ($resdomain,$resuser)=
+ (&Apache::lonnet::declutter($uri)=~/^(\w+)\/(\w+)\//);
+ my $html=&Apache::lonxml::xmlbegin();
+ $r->print($html.' |