version 1.4, 2004/04/08 14:50:44
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version 1.5, 2004/04/12 21:11:45
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Line 297 sub store_metadata {
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Line 297 sub store_metadata {
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my @MData; |
my @MData; |
foreach my $field (@Metadata_Table_Description) { |
foreach my $field (@Metadata_Table_Description) { |
if (exists($mdata->{$field->{'name'}})) { |
if (exists($mdata->{$field->{'name'}})) { |
push(@MData,$mdata->{$field->{'name'}}); |
if ($mdata->{$field->{'name'}} eq 'nan') { |
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push(@MData,'NULL'); |
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} else { |
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push(@MData,$mdata->{$field->{'name'}}); |
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} |
} else { |
} else { |
push(@MData,undef); |
push(@MData,undef); |
} |
} |
Line 379 sub delete_metadata {}
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Line 383 sub delete_metadata {}
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###################################################################### |
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###################################################################### |
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###################################################################### |
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###################################################################### |
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=pod |
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=item &process_reseval_data |
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Process a nohist_resevaldata hash into a more complex data structure. |
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Input: Hash reference containing reseval data |
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Returns: Hash with the following structure: |
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$hash{$url}->{'statistics'}->{$courseid}->{'avetries'} = $value |
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$hash{$url}->{'statistics'}->{$courseid}->{'count'} = $value |
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$hash{$url}->{'statistics'}->{$courseid}->{'difficulty'} = $value |
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$hash{$url}->{'statistics'}->{$courseid}->{'stdno'} = $value |
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$hash{$url}->{'statistics'}->{$courseid}->{'timestamp'} = $value |
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$hash{$url}->{'evaluation'}->{$username}->{'clear'} = $value |
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$hash{$url}->{'evaluation'}->{$username}->{'comments'} = $value |
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$hash{$url}->{'evaluation'}->{$username}->{'depth'} = $value |
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$hash{$url}->{'evaluation'}->{$username}->{'technical'} = $value |
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$hash{$url}->{'evaluation'}->{$username}->{'helpful'} = $value |
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$hash{$url}->{'course'} = \@Courses |
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$hash{$url}->{'comefrom'} = \@Resources |
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$hash{$url}->{'goto'} = \@Resources |
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$hash{$url}->{'usage'} = \@Resources |
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$hash{$url}->{'stats'}->{$courseid\_$section}->{$key} = $value |
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=cut |
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###################################################################### |
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###################################################################### |
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sub process_reseval_data { |
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my ($evaldata) = @_; |
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my %DynamicData; |
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# |
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# Process every stored element |
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while (my ($storedkey,$value) = each(%{$evaldata})) { |
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my ($source,$file,$type) = split('___',$storedkey); |
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$source = &unescape($source); |
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$file = &unescape($file); |
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$value = &unescape($value); |
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" got ".$file."\n ".$type." ".$source."\n"; |
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if ($type =~ /^(avetries|count|difficulty|stdno|timestamp)$/) { |
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# |
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# Statistics: $source is course id |
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$DynamicData{$file}->{'statistics'}->{$source}->{$type}=$value; |
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} elsif ($type =~ /^(clear|comments|depth|technical|helpful)$/){ |
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# |
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# Evaluation $source is username, check if they evaluated it |
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# more than once. If so, pad the entry with a space. |
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while(exists($DynamicData{$file}->{'evaluation'}->{$type}->{$source})) { |
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$source .= ' '; |
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} |
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$DynamicData{$file}->{'evaluation'}->{$type}->{$source}=$value; |
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} elsif ($type =~ /^(course|comefrom|goto|usage)$/) { |
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# |
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# Context $source is course id or resource |
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push(@{$DynamicData{$file}->{$type}},&unescape($source)); |
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} elsif ($type eq 'stats') { |
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# |
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# Statistics storage... |
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# $source is $cid\_$sec\_$stdno |
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# $value is stat1=value&stat2=value&stat3=value,.... |
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# |
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my ($cid,$sec,$stdno)=split('_',$source); |
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my $crssec = $cid.'_'.$sec; |
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my @Data = split('&',$value); |
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my %Statistics; |
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while (my ($key,$value) = split('=',pop(@Data))) { |
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$Statistics{$key} = $value; |
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} |
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# |
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# Only store the data if the number of students is greater |
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# than the data already stored |
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if (! exists($DynamicData{$file}->{'stats'}->{$crssec}) || |
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$DynamicData{$file}->{'stats'}->{$crssec}->{'stdno'}<$stdno){ |
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$DynamicData{$file}->{'stats'}->{$crssec}=\%Statistics; |
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} |
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} |
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} |
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return %DynamicData; |
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} |
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###################################################################### |
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###################################################################### |
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=pod |
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=item &process_dynamic_metadata |
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Inputs: $url: the url of the item to process |
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$DynamicData: hash reference for the results of &process_reseval_data |
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Returns: Hash containing the following keys: |
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avetries, avetries_list, difficulty, difficulty_list, stdno, stdno_list, |
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course, course_list, goto, goto_list, comefrom, comefrom_list, |
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usage, clear, technical, correct, helpful, depth, comments |
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Each of the return keys is associated with either a number or a string |
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The *_list items are comma-seperated strings. 'comments' is a string |
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containing generically marked-up comments. |
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=cut |
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###################################################################### |
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###################################################################### |
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sub process_dynamic_metadata { |
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my ($url,$DynamicData) = @_; |
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my %data; |
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my $resdata = $DynamicData->{$url}; |
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# |
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# Get the statistical data |
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foreach my $type (qw/avetries difficulty stdno/) { |
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my $count; |
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my $sum; |
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my @Values; |
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# |
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foreach my $coursedata (values(%{$resdata->{'statistics'}}), |
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values(%{$resdata->{'stats'}})) { |
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if (ref($coursedata) eq 'HASH' && exists($coursedata->{$type})) { |
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$count++; |
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$sum += $coursedata->{$type}; |
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push(@Values,$coursedata->{$type}); |
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} |
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} |
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if ($count) { |
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$data{$type} = $sum/$count; |
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$data{$type.'_list'} = join(',',@Values); |
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} |
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} |
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# |
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# Get the context data |
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foreach my $type (qw/course goto comefrom/) { |
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if (defined($resdata->{$type}) && |
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ref($resdata->{$type}) eq 'ARRAY') { |
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$data{$type} = scalar(@{$resdata->{$type}}); |
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$data{$type.'_list'} = join(',',@{$resdata->{$type}}); |
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} |
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} |
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if (defined($resdata->{'usage'}) && |
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ref($resdata->{'usage'}) eq 'ARRAY') { |
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$data{'sequsage'} = scalar(@{$resdata->{'usage'}}); |
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$data{'sequsage_list'} = join(',',@{$resdata->{'usage'}}); |
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} |
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# |
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# Get the evaluation data |
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foreach my $type (qw/clear technical correct helpful depth/) { |
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my $count; |
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my $sum; |
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foreach my $evaluator (keys(%{$resdata->{'evaluation'}->{$type}})){ |
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$sum += $resdata->{'evaluation'}->{$type}->{$evaluator}; |
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$count++; |
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} |
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if ($count > 0) { |
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$data{$type}=$sum/$count; |
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} |
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} |
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# |
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# put together comments |
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my $comments = '<div class="LCevalcomments">'; |
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foreach my $evaluator (keys(%{$resdata->{'evaluation'}->{'comments'}})){ |
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$comments .= '<span class="author">'.$evaluator.'</span>'. |
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'<span class="comment">'. |
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$resdata->{'evaluation'}->{'comments'}->{$evaluator}.'</span>'; |
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} |
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$comments .= '</div>'; |
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# |
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return %data; |
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} |
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###################################################################### |
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###################################################################### |
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## |
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## The usual suspects, repeated here to reduce dependency hell |
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## |
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###################################################################### |
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###################################################################### |
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sub unescape { |
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my $str=shift; |
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$str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; |
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return $str; |
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} |
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sub escape { |
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my $str=shift; |
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$str =~ s/(\W)/"%".unpack('H2',$1)/eg; |
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return $str; |
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} |
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1; |
1; |
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__END__; |
__END__; |