Annotation of loncom/interface/spreadsheet/studentcalc.pm, revision 1.23
1.1 matthew 1: #
1.23 ! www 2: # $Id: studentcalc.pm,v 1.22 2003/09/18 20:12:40 matthew Exp $
1.1 matthew 3: #
4: # Copyright Michigan State University Board of Trustees
5: #
6: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
7: #
8: # LON-CAPA is free software; you can redistribute it and/or modify
9: # it under the terms of the GNU General Public License as published by
10: # the Free Software Foundation; either version 2 of the License, or
11: # (at your option) any later version.
12: #
13: # LON-CAPA is distributed in the hope that it will be useful,
14: # but WITHOUT ANY WARRANTY; without even the implied warranty of
15: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: # GNU General Public License for more details.
17: #
18: # You should have received a copy of the GNU General Public License
19: # along with LON-CAPA; if not, write to the Free Software
20: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21: #
22: # /home/httpd/html/adm/gpl.txt
23: #
24: # http://www.lon-capa.org/
25: #
26: # The LearningOnline Network with CAPA
27: # Spreadsheet/Grades Display Handler
28: #
29: # POD required stuff:
30:
31: =head1 NAME
32:
33: studentcalc
34:
35: =head1 SYNOPSIS
36:
37: =head1 DESCRIPTION
38:
39: =over 4
40:
41: =cut
42:
43: ###################################################
44: ### StudentSheet ###
45: ###################################################
46: package Apache::studentcalc;
47:
1.17 matthew 48: use warnings FATAL=>'all';
49: no warnings 'uninitialized';
50:
1.1 matthew 51: use strict;
52: use Apache::Constants qw(:common :http);
53: use Apache::lonnet;
1.3 matthew 54: use Apache::loncommon();
55: use Apache::loncoursedata();
1.1 matthew 56: use Apache::lonnavmaps;
1.3 matthew 57: use Apache::Spreadsheet();
58: use Apache::assesscalc();
1.1 matthew 59: use HTML::Entities();
60: use Time::HiRes;
1.23 ! www 61: use Apache::lonlocal;
1.1 matthew 62:
63: @Apache::studentcalc::ISA = ('Apache::Spreadsheet');
64:
65: my @Sequences = ();
66: my %Exportrows = ();
67:
68: my $current_course;
69:
1.8 matthew 70: sub initialize {
1.11 matthew 71: &Apache::assesscalc::initialize();
1.8 matthew 72: &initialize_sequence_cache();
73: }
74:
1.1 matthew 75: sub initialize_package {
76: $current_course = $ENV{'request.course.id'};
77: &initialize_sequence_cache();
78: &load_cached_export_rows();
1.8 matthew 79: }
80:
81: sub ensure_correct_sequence_data {
82: if ($current_course ne $ENV{'request.course.id'}) {
83: &initialize_sequence_cache();
84: $current_course = $ENV{'request.course.id'};
85: }
86: return;
1.1 matthew 87: }
88:
89: sub initialize_sequence_cache {
90: #
91: # Set up the sequences and assessments
1.22 matthew 92: undef(@Sequences);
1.1 matthew 93: my ($top,$sequences,$assessments) =
94: &Apache::loncoursedata::get_sequence_assessment_data();
95: if (! defined($top) || ! ref($top)) {
96: # There has been an error, better report it
1.2 matthew 97: &Apache::lonnet::logthis('top is undefined (studentcalc.pm)');
1.1 matthew 98: return;
99: }
100: @Sequences = @{$sequences} if (ref($sequences) eq 'ARRAY');
101: }
102:
103: sub clear_package {
1.17 matthew 104: undef(@Sequences);
105: undef(%Exportrows);
1.18 matthew 106: &Apache::assesscalc::clear_package();
1.1 matthew 107: }
108:
109: sub get_title {
110: my $self = shift;
1.6 matthew 111: my @title = ();
112: #
113: # Determine the students name
1.3 matthew 114: my %userenv = &Apache::loncoursedata::GetUserName($self->{'name'},
115: $self->{'domain'});
1.6 matthew 116: my $name = join(' ',
117: @userenv{'firstname','middlename','lastname','generation'});
1.3 matthew 118: $name =~ s/\s+$//;
1.6 matthew 119:
120: push (@title,$name);
121: push (@title,$self->{'coursedesc'});
1.23 ! www 122: push (@title,&Apache::lonlocal::locallocaltime(time));
1.6 matthew 123: return @title;
124: }
125:
126: sub get_html_title {
127: my $self = shift;
128: my ($name,$desc,$time) = $self->get_title();
129: my $title = '<h1>'.$name;
1.3 matthew 130: if ($ENV{'user.name'} ne $self->{'name'} &&
131: $ENV{'user.domain'} ne $self->{'domain'}) {
1.19 matthew 132: $title .= ' '.&Apache::loncommon::aboutmewrapper
1.3 matthew 133: ($self->{'name'}.'@'.$self->{'domain'},
134: $self->{'name'},$self->{'domain'});
135: }
136: $title .= "</h1>\n";
1.6 matthew 137: $title .= '<h2>'.$desc."</h2>\n";
138: $title .= '<h3>'.$time.'</h3>';
1.1 matthew 139: return $title;
140: }
141:
142: sub parent_link {
143: my $self = shift;
1.23 ! www 144: return '<p><a href="/adm/classcalc">'.&mt('Course level sheet').'</a></p>'."\n";
1.1 matthew 145: }
146:
1.14 matthew 147: sub convenience_links {
148: my $self = shift;
149: my ($resource) = @_;
150: my $symb = &Apache::lonnet::escape($resource->{'symb'});
151: my $result = <<"END";
152: <a href="/adm/grades?symb=$symb&command=submission" target="LONcatInfo">
153: <img src="/adm/lonMisc/subm_button.gif" border=0 />
154: </a>
155: <a href="/adm/grades?symb=$symb&command=gradingmenu" target="LONcatInfo">
156: <img src="/adm/lonMisc/pgrd_button.gif" border=0 />
157: </a>
158: <a href="/adm/parmset?symb=$symb" target="LONcatInfo">
159: <img src="/adm/lonMisc/pprm_button.gif" border=0 />
160: </a>
161: END
162: return $result;
163: }
164:
1.1 matthew 165: sub outsheet_html {
166: my $self = shift;
167: my ($r) = @_;
1.13 matthew 168: my $importcolor = '#FFFFAA';
1.12 matthew 169: my $exportcolor = '#88FF88';
1.1 matthew 170: ####################################
171: # Get the list of assessment files #
172: ####################################
173: my @AssessFileNames = $self->othersheets('assesscalc');
1.2 matthew 174: my $editing_is_allowed = &Apache::lonnet::allowed('mgr',
175: $ENV{'request.course.id'});
1.1 matthew 176: ####################################
177: # Determine table structure #
178: ####################################
179: my $num_uneditable = 26;
180: my $num_left = 52-$num_uneditable;
1.23 ! www 181: my %lt=&Apache::lonlocal::texthash(
! 182: 'st' => 'Student',
! 183: 'im' => 'Import',
! 184: 'ca' => 'Calculations',
! 185: 'as' => 'Assessment',
! 186: 'ro' => 'Row',
! 187: );
1.1 matthew 188: my $tableheader =<<"END";
1.2 matthew 189: <p>
1.1 matthew 190: <table border="2">
191: <tr>
1.23 ! www 192: <th colspan="2" rowspan="2"><font size="+2">$lt{'st'}</font></th>
1.12 matthew 193: <td bgcolor="$importcolor" colspan="$num_uneditable">
1.23 ! www 194: <b><font size="+1">$lt{'im'}</font></b></td>
1.1 matthew 195: <td colspan="$num_left">
1.23 ! www 196: <b><font size="+1">$lt{'ca'}</font></b></td>
1.1 matthew 197: </tr><tr>
198: END
199: my $label_num = 0;
200: foreach (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz')){
201: if ($label_num<$num_uneditable) {
1.12 matthew 202: $tableheader .='<td bgcolor="'.$importcolor.'">';
1.1 matthew 203: } else {
204: $tableheader .='<td>';
205: }
206: $tableheader .="<b><font size=+1>$_</font></b></td>";
207: $label_num++;
208: }
209: $tableheader .="</tr>\n";
1.4 matthew 210: if ($self->blackout()) {
211: $r->print('<font color="red" size="+2"><p>'.
1.23 ! www 212: &mt('Some computations are not available at this time.').'<br />'.
! 213: &mt('There are problems whose status you are not allowed to view.').
1.4 matthew 214: '</font></p>'."\n");
215: } else {
216: $r->print($tableheader);
217: #
218: # Print out template row
219: if (exists($ENV{'request.role.adv'}) && $ENV{'request.role.adv'}) {
220: $r->print('<tr><td>Template</td><td> </td>'.
1.12 matthew 221: $self->html_template_row($num_uneditable,
222: $importcolor)."</tr>\n");
1.4 matthew 223: }
224: #
225: # Print out summary/export row
1.23 ! www 226: $r->print('<tr><td>'.&mt('Summary').'</td><td>0</td>'.
1.12 matthew 227: $self->html_export_row($exportcolor)."</tr>\n");
1.4 matthew 228: }
1.1 matthew 229: $r->print("</table>\n");
230: #
231: # Prepare to output rows
1.4 matthew 232: if (exists($ENV{'request.role.adv'}) && $ENV{'request.role.adv'}) {
233: $tableheader =<<"END";
1.2 matthew 234: </p><p>
1.1 matthew 235: <table border="2">
1.23 ! www 236: <tr><th>$lt{'ro'}</th><th> </th><th>$lt{'as'}</th>
1.1 matthew 237: END
1.4 matthew 238: } else {
239: $tableheader =<<"END";
240: </p><p>
241: <table border="2">
1.23 ! www 242: <tr><th> </th><th>$lt{'as'}</th>
1.4 matthew 243: END
244: }
1.1 matthew 245: foreach (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz')){
246: if ($label_num<$num_uneditable) {
247: $tableheader.='<td bgcolor="#FFDDDD">';
248: } else {
249: $tableheader.='<td>';
250: }
251: $tableheader.="<b><font size=+1>$_</font></b></td>";
252: }
253: $tableheader.="\n";
254: #
255: my $num_output = 1;
256: if (scalar(@Sequences)< 1) {
257: &initialize_sequence_cache();
258: }
259: foreach my $Sequence (@Sequences) {
260: next if ($Sequence->{'num_assess'} < 1);
261: $r->print("<h3>".$Sequence->{'title'}."</h3>\n");
262: $r->print($tableheader);
263: foreach my $resource (@{$Sequence->{'contents'}}) {
264: next if ($resource->{'type'} ne 'assessment');
265: my $rownum = $self->get_row_number_from_key($resource->{'symb'});
266: my $assess_filename = $self->{'row_source'}->{$rownum};
1.2 matthew 267: my $row_output = '<tr>';
268: if ($editing_is_allowed) {
269: $row_output .= '<td>'.$rownum.'</td>';
1.14 matthew 270: $row_output .= '<td>'.$self->convenience_links($resource).'</td>';
1.2 matthew 271: $row_output .= '<td>'.
272: '<a href="/adm/assesscalc?sname='.$self->{'name'}.
273: '&sdomain='.$self->{'domain'}.
274: '&filename='.$assess_filename.
1.4 matthew 275: '&usymb='.&Apache::lonnet::escape($resource->{'symb'}).
276: '">'.$resource->{'title'}.'</a><br />';
1.2 matthew 277: $row_output .= &assess_file_selector($rownum,
278: $assess_filename,
279: \@AssessFileNames).
280: '</td>';
281: } else {
282: $row_output .= '<td><a href="'.$resource->{'src'}.'?symb='.
1.4 matthew 283: &Apache::lonnet::escape($resource->{'symb'}).
284: '">Go To</a>';
1.2 matthew 285: $row_output .= '</td><td>'.$resource->{'title'}.'</td>';
286: }
1.4 matthew 287: if ($self->blackout() && $self->{'blackout_rows'}->{$rownum}>0) {
288: $row_output .=
1.23 ! www 289: '<td colspan="52">'.&mt('Unavailable at this time').'</td></tr>'."\n";
1.4 matthew 290: } else {
1.12 matthew 291: $row_output .= $self->html_row($num_uneditable,$rownum,
292: $exportcolor,$importcolor).
1.4 matthew 293: "</tr>\n";
294: }
1.1 matthew 295: $r->print($row_output);
296: }
297: $r->print("</table>\n");
298: }
1.2 matthew 299: $r->print("</p>\n");
1.1 matthew 300: return;
301: }
302:
303: ########################################################
304: ########################################################
305:
306: =pod
307:
308: =item &assess_file_selector()
309:
310: =cut
311:
312: ########################################################
313: ########################################################
314: sub assess_file_selector {
315: my ($row,$default,$AssessFiles)=@_;
1.2 matthew 316: if (!defined($AssessFiles) || ! @$AssessFiles) {
317: return '';
318: }
1.1 matthew 319: return '' if (! &Apache::lonnet::allowed('mgr',$ENV{'request.course.id'}));
320: my $element_name = 'FileSelect_'.$row;
321: my $load_dialog = '<select size="1" name="'.$element_name.'" '.
322: 'onchange="'.
323: "document.sheet.cell.value='source_$row';".
324: "document.sheet.newformula.value=document.sheet.$element_name\.value;".
325: 'document.sheet.submit()" '.'>'."\n";
326: foreach my $file (@{$AssessFiles}) {
327: $load_dialog .= ' <option name="'.$file.'"';
328: $load_dialog .= ' selected' if ($default eq $file);
329: $load_dialog .= '>'.$file."</option>\n";
330: }
331: $load_dialog .= "</select>\n";
332: return $load_dialog;
333: }
334:
335: sub modify_cell {
336: my $self = shift;
337: my ($cell,$formula) = @_;
338: if ($cell =~ /^source_(\d+)$/) {
339: # Need to make sure $formula is a valid filename....
340: my $row = $1;
341: $cell = 'A'.$row;
342: $self->{'row_source'}->{$row} = $formula;
343: my $original_source = $self->formula($cell);
344: if ($original_source =~ /__&&&__/) {
345: ($original_source,undef) = split('__&&&__',$original_source);
346: }
347: $formula = $original_source.'__&&&__'.$formula;
348: } elsif ($cell =~ /([A-z])\-/) {
349: $cell = 'template_'.$1;
350: } elsif ($cell !~ /^([A-z](\d+)|template_[A-z])$/) {
351: return;
352: }
353: $self->set_formula($cell,$formula);
354: $self->rebuild_stats();
355: return;
356: }
357:
1.7 matthew 358: sub csv_rows {
359: # writes the meat of the spreadsheet to an excel worksheet. Called
360: # by Spreadsheet::outsheet_excel;
1.1 matthew 361: my $self = shift;
1.7 matthew 362: my ($filehandle) = @_;
363: #
364: # Write a header row
365: $self->csv_output_row($filehandle,undef,
1.23 ! www 366: (&mt('Sequence or Folder'),&mt('Assessment title')));
1.7 matthew 367: #
368: # Write each assessments row
369: if (scalar(@Sequences)< 1) {
370: &initialize_sequence_cache();
371: }
372: foreach my $Sequence (@Sequences) {
373: next if ($Sequence->{'num_assess'} < 1);
374: foreach my $resource (@{$Sequence->{'contents'}}) {
375: my $rownum = $self->get_row_number_from_key($resource->{'symb'});
376: my @assessdata = ($Sequence->{'title'},
377: $resource->{'title'});
378: $self->csv_output_row($filehandle,$rownum,@assessdata);
379: }
380: }
381: return;
1.1 matthew 382: }
1.6 matthew 383:
384: sub excel_rows {
385: # writes the meat of the spreadsheet to an excel worksheet. Called
386: # by Spreadsheet::outsheet_excel;
1.1 matthew 387: my $self = shift;
1.6 matthew 388: my ($worksheet,$cols_output,$rows_output) = @_;
389: #
390: # Write a header row
391: $cols_output = 0;
392: foreach my $value ('Container','Assessment title') {
1.23 ! www 393: $worksheet->write($rows_output,$cols_output++,&mt($value));
1.6 matthew 394: }
395: $rows_output++;
396: #
397: # Write each assessments row
398: if (scalar(@Sequences)< 1) {
399: &initialize_sequence_cache();
400: }
401: foreach my $Sequence (@Sequences) {
402: next if ($Sequence->{'num_assess'} < 1);
403: foreach my $resource (@{$Sequence->{'contents'}}) {
404: my $rownum = $self->get_row_number_from_key($resource->{'symb'});
405: my @assessdata = ($Sequence->{'title'},
406: $resource->{'title'});
407: $self->excel_output_row($worksheet,$rownum,$rows_output++,
408: @assessdata);
409: }
410: }
411: return;
1.1 matthew 412: }
1.6 matthew 413:
1.1 matthew 414: sub outsheet_recursive_excel {
415: my $self = shift;
416: my ($r) = @_;
417: }
418:
1.22 matthew 419: ##
420: ## Routines to deal with sequences in the safe space
421: ##
422: sub get_rows_in_sequence {
423: my $self = shift();
424: my ($sequence) = @_;
425: my @Rows;
426: foreach my $resource (@{$sequence->{'contents'}}) {
427: if ($resource->{'type'} eq 'assessment') {
428: my $rownum = $self->get_row_number_from_key($resource->{'symb'});
429: push (@Rows,$rownum);
430: }
431: }
432: return @Rows;
433: }
434:
435: sub remove_sequence_data_from_safe_space {
436: my $self = shift();
437: my $command = 'undef(%Sequence_Rows);';
438: $self->{'safe'}->reval($command);
439: }
440:
441: sub put_sequence_data_in_safe_space {
442: my $self = shift();
443: my $data = 'undef(%Sequence_Rows);';
444: # Build up the %Sequence_Rows hash - each sequence title is associated with
445: # an array pointer, which holds the rows in the sequence.
446: foreach my $seq (@Sequences) {
447: my @Rows = $self->get_rows_in_sequence($seq);
448: #
449: # Potential problems with sequence titles:
450: # 1. duplicate titles - they get the total for the titles
451: # 2. control characters in titles - use q{} around the string to
452: # deal with it.
453: my $title = &HTML::Entities::decode($seq->{'title'});
454: $title =~ s/&\#058;/:/g;
455: if (@Rows) {
456: $data .= 'push(@{$Sequence_Rows{"'.quotemeta($title).'"}},'.
457: '('.join(',',@Rows).'));'."\n";;
458: }
459: }
460: my $new_code = $data.<<'END';
461: sub SUMSEQ {
462: my ($col,@titles) = @_;
463: return 'bad column: '.$col if ($col !~ /^[A-z]$/);
464: my $sum = 0;
465: foreach my $title (@titles) {
466: while (my ($seq_title,$rows) = each(%Sequence_Rows)) {
467: my $regexp;
468: if ($title =~ /^regexp:(.*)$/) {
469: $regexp = $1;
470: } elsif (lc($title) eq 'all') {
471: $regexp = '.';
472: }
473: if (defined($regexp)) {
474: next if ($seq_title !~ /$regexp/);
475: } else {
476: next if ($seq_title ne $title);
477: }
478: foreach my $rownum (@{$rows}) {
479: my $cell = $col.$rownum;
480: if (exists($sheet_values{$cell})) {
481: $sum += $sheet_values{$cell};
482: }
483: }
484: }
485: }
486: return $sum;
487: }
488: END
489: $self->{'safe'}->reval($new_code);
490: return;
491: }
492:
493: ##
494: ## Main computation method
495: ##
1.1 matthew 496: sub compute {
497: my $self = shift;
1.18 matthew 498: my ($r) = @_;
499: my $connection = $r->connection();
500: if ($connection->aborted()) { $self->cleanup; return; }
1.1 matthew 501: if (! defined($current_course) ||
1.22 matthew 502: $current_course ne $ENV{'request.course.id'} ||
503: ! @Sequences ) {
1.1 matthew 504: $current_course = $ENV{'request.course.id'};
505: &clear_package();
506: &initialize_sequence_cache();
507: }
508: $self->initialize_safe_space();
509: &Apache::assesscalc::initialize_package($self->{'name'},$self->{'domain'});
510: my %f = $self->formulas();
511: #
512: # Process the formulas list -
513: # the formula for the A column of a row is symb__&&__filename
514: my %c = $self->constants();
1.22 matthew 515: foreach my $seq (@Sequences) {
1.1 matthew 516: next if ($seq->{'num_assess'}<1);
517: foreach my $resource (@{$seq->{'contents'}}) {
1.18 matthew 518: if ($connection->aborted()) { $self->cleanup(); return; }
1.1 matthew 519: next if ($resource->{'type'} ne 'assessment');
520: my $rownum = $self->get_row_number_from_key($resource->{'symb'});
521: my $cell = 'A'.$rownum;
522: my $assess_filename = 'Default';
523: if (exists($self->{'row_source'}->{$rownum})) {
524: $assess_filename = $self->{'row_source'}->{$rownum};
525: } else {
526: $self->{'row_source'}->{$rownum} = $assess_filename;
527: }
528: $f{$cell} = $resource->{'symb'}.'__&&&__'.$assess_filename;
1.18 matthew 529: if ($connection->aborted()) { $self->cleanup(); return; }
1.1 matthew 530: my $assessSheet = Apache::assesscalc->new($self->{'name'},
531: $self->{'domain'},
532: $assess_filename,
533: $resource->{'symb'});
1.18 matthew 534: my @exportdata = $assessSheet->export_data($r);
535: if ($connection->aborted()) { $self->cleanup(); return; }
1.4 matthew 536: if ($assessSheet->blackout()) {
537: $self->blackout(1);
538: $self->{'blackout_rows'}->{$rownum} = 1;
539: }
1.1 matthew 540: #
541: # Be sure not to disturb the formulas in the 'A' column
542: my $data = shift(@exportdata);
543: $c{$cell} = $data if (defined($data));
544: #
545: # Deal with the remaining columns
546: my $i=0;
547: foreach (split(//,'BCDEFGHIJKLMNOPQRSTUVWXYZ')) {
548: my $cell = $_.$rownum;
549: my $data = shift(@exportdata);
550: if (defined($data)) {
551: $f{$cell} = 'import';
552: $c{$cell} = $data;
553: }
554: $i++;
555: }
556: }
557: }
558: $self->constants(\%c);
559: $self->formulas(\%f);
1.22 matthew 560: $self->put_sequence_data_in_safe_space();
1.1 matthew 561: $self->calcsheet();
1.22 matthew 562: $self->remove_sequence_data_from_safe_space();
1.1 matthew 563: #
564: # Store export row in cache
565: my @exportarray=$self->exportrow();
566: my $student = $self->{'name'}.':'.$self->{'domain'};
567: $Exportrows{$student}->{'time'} = time;
568: $Exportrows{$student}->{'data'} = \@exportarray;
569: # save export row
570: $self->save_export_data();
1.9 matthew 571: #
572: $self->save() if ($self->need_to_save());
573: return;
574: }
575:
576: sub set_row_sources {
577: my $self = shift;
578: while (my ($cell,$value) = each(%{$self->{'formulas'}})) {
1.17 matthew 579: next if ($cell !~ /^A(\d+)$/ || $1 < 1);
1.9 matthew 580: my $row = $1;
581: (undef,$value) = split('__&&&__',$value);
582: $value = 'Default' if (! defined($value));
583: $self->{'row_source'}->{$row} = $value;
584: }
1.1 matthew 585: return;
586: }
587:
588: sub set_row_numbers {
589: my $self = shift;
590: while (my ($cell,$formula) = each(%{$self->{'formulas'}})) {
591: next if ($cell !~ /^A(\d+)/);
592: my $row = $1;
593: next if ($row == 0);
594: my ($symb,undef) = split('__&&&__',$formula);
595: $self->{'row_numbers'}->{$symb} = $row;
1.17 matthew 596: $self->{'maxrow'} = $row if ($row > $self->{'maxrow'});
1.1 matthew 597: }
598: }
599:
600: sub get_row_number_from_symb {
601: my $self = shift;
602: my ($key) = @_;
603: ($key,undef) = split('__&&&__',$key) if ($key =~ /__&&&__/);
604: return $self->get_row_number_from_key($key);
605: }
606:
607: #############################################
608: #############################################
609:
610: =pod
611:
612: =item &load_cached_export_rows
613:
614: Retrieves and parsers the export rows of the student spreadsheets.
615: These rows are saved in the courses directory in the format:
616:
617: sname:sdom:studentcalc:.time => time
618:
619: sname:sdom:studentcalc => ___=___Adata___;___Bdata___;___Cdata___;___ .....
620:
621: =cut
622:
623: #############################################
624: #############################################
625: sub load_cached_export_rows {
1.17 matthew 626: undef(%Exportrows);
1.1 matthew 627: my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets',
628: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
629: $ENV{'course.'.$ENV{'request.course.id'}.'.num'},undef);
630: my %Selected_Assess_Sheet;
631: if ($tmp[0] =~ /^error/) {
632: &Apache::lonnet::logthis('unable to read cached student export rows '.
633: 'for course '.$ENV{'request.course.id'});
634: return;
635: }
636: my %tmp = @tmp;
637: while (my ($key,$sheetdata) = each(%tmp)) {
638: my ($sname,$sdom,$sheettype,$remainder) = split(':',$key);
639: my $student = $sname.':'.$sdom;
640: if ($remainder =~ /\.time/) {
641: $Exportrows{$student}->{'time'} = $sheetdata;
642: } else {
643: $sheetdata =~ s/^___=___//;
644: my @Data = split('___;___',$sheetdata);
645: $Exportrows{$student}->{'data'} = \@Data;
646: }
647: }
648: }
649:
650: #############################################
651: #############################################
652:
653: =pod
654:
655: =item &save_export_data()
656:
657: Writes the export data for this student to the course cache.
658:
659: =cut
660:
661: #############################################
662: #############################################
663: sub save_export_data {
664: my $self = shift;
1.20 matthew 665: &Apache::assesscalc::save_cached_export_rows($self->{'name'},
666: $self->{'domain'});
1.5 matthew 667: return if ($self->temporary());
1.1 matthew 668: my $student = $self->{'name'}.':'.$self->{'domain'};
669: return if (! exists($Exportrows{$student}));
670: return if (! $self->is_default());
671: my $key = join(':',($self->{'name'},$self->{'domain'},'studentcalc')).':';
672: my $timekey = $key.'.time';
673: my $newstore = join('___;___',
674: @{$Exportrows{$student}->{'data'}});
675: $newstore = '___=___'.$newstore;
1.16 matthew 676: my $result= &Apache::lonnet::put('nohist_calculatedsheets',
1.1 matthew 677: { $key => $newstore,
678: $timekey => $Exportrows{$student}->{'time'} },
679: $self->{'cdom'},
680: $self->{'cnum'});
681: return;
682: }
683:
684: #############################################
685: #############################################
686:
687: =pod
688:
689: =item &export_data()
690:
691: Returns the export data associated with the spreadsheet. Computes the
692: spreadsheet only if necessary.
693:
694: =cut
695:
696: #############################################
697: #############################################
698: sub export_data {
699: my $self = shift;
1.18 matthew 700: my ($r) = @_;
701: my $connection = $r->connection();
1.1 matthew 702: my $student = $self->{'name'}.':'.$self->{'domain'};
703: if (! exists($Exportrows{$student}) ||
1.15 matthew 704: ! defined($Exportrows{$student}) ||
1.16 matthew 705: ! exists($Exportrows{$student}->{'data'}) ||
1.15 matthew 706: ! defined($Exportrows{$student}->{'data'}) ||
1.16 matthew 707: ! exists($Exportrows{$student}->{'time'}) ||
708: ! defined($Exportrows{$student}->{'time'}) ||
1.1 matthew 709: ! $self->check_expiration_time($Exportrows{$student}->{'time'})) {
1.18 matthew 710: $self->compute($r);
1.1 matthew 711: }
1.18 matthew 712: if ($connection->aborted()) { $self->cleanup(); return; }
1.1 matthew 713: my @Data = @{$Exportrows{$student}->{'data'}};
714: for (my $i=0; $i<=$#Data;$i++) {
715: $Data[$i]="'".$Data[$i]."'" if ($Data[$i]=~/\D/ && defined($Data[$i]));
716: }
717: return @Data;
718: }
719:
720: 1;
721:
722: __END__
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