1: #
2: # $Id: assesscalc.pm,v 1.17.2.2 2003/10/03 15:39:46 albertel Exp $
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: assesscalc
34:
35: =head1 SYNOPSIS
36:
37: =head1 DESCRIPTION
38:
39: =cut
40:
41: ###################################################
42: ### AssessSheet ###
43: ###################################################
44: package Apache::assesscalc;
45:
46: use strict;
47: use Apache::Constants qw(:common :http);
48: use Apache::lonnet;
49: use Apache::loncommon;
50: use Apache::Spreadsheet;
51: use Apache::loncoursedata();
52: use HTML::Entities();
53: use Spreadsheet::WriteExcel;
54: use GDBM_File;
55: use Time::HiRes;
56:
57: @Apache::assesscalc::ISA = ('Apache::Spreadsheet');
58:
59: ########################################################
60: ########################################################
61:
62: =pod
63:
64: =head2 Package Variables
65:
66: =over 4
67:
68: =item %Exportrows
69:
70: =item $current_name
71:
72: =item $current_domain
73:
74: =item $current_course
75:
76: =item %parmhash
77:
78: =item %nice_parameter_name
79:
80: =item %useropt
81:
82: =item %courseopt
83:
84: =back
85:
86: =cut
87:
88: ########################################################
89: ########################################################
90:
91: my %Exportrows;
92:
93: my $current_name;
94: my $current_domain;
95: my $current_course;
96:
97: my %parmhash;
98: my %nice_parameter_name;
99:
100: my %useropt;
101: my %courseopt;
102:
103: ########################################################
104: ########################################################
105:
106: =pod
107:
108: =head2 Package Subroutines
109:
110: =item &clear_package()
111:
112: Reset all package variables.
113:
114: =cut
115:
116: ########################################################
117: ########################################################
118: sub clear_package {
119: undef(%Exportrows);
120: undef($current_name);
121: undef($current_domain);
122: undef($current_course);
123: undef(%useropt);
124: undef(%courseopt);
125: }
126:
127: sub initialize {
128: &clear_package();
129: &Apache::loncoursedata::clear_internal_caches();
130: }
131:
132: ########################################################
133: ########################################################
134:
135: =pod
136:
137: =item &initialize_package()
138:
139: =cut
140:
141: ########################################################
142: ########################################################
143: sub initialize_package {
144: my ($sname,$sdomain) = @_;
145: $current_name = $sname;
146: $current_domain = $sdomain;
147: if ($current_course ne $ENV{'request.course.id'}) {
148: $current_course = $ENV{'request.course.id'};
149: undef(%courseopt);
150: }
151: &load_cached_export_rows();
152: &load_parameter_caches();
153: &Apache::loncoursedata::clear_internal_caches();
154: }
155:
156: ########################################################
157: ########################################################
158:
159: =pod
160:
161: =item &load_parameter_caches()
162:
163: =cut
164:
165: ########################################################
166: ########################################################
167: sub load_parameter_caches {
168: my $userprefix = $current_name.':'.$current_domain.'_';
169: $userprefix =~ s/:/_/g;
170: #
171: # Course Parameters Cache
172: if (! %courseopt) {
173: &Apache::lonnet::logthis("loading course options");
174: $current_course = $ENV{'request.course.id'};
175: undef(%courseopt);
176: if (! defined($current_name) || ! defined($current_domain)) {
177: &Apache::lonnet::logthis('bad call to setup_parameter_caches');
178: return;
179: }
180: my $dom = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
181: my $id = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
182: my %Tmp = &Apache::lonnet::dump('resourcedata',$dom,$id);
183: while (my ($name,$value) = each(%Tmp)) {
184: $courseopt{$name}=$value;
185: }
186: }
187: if (! %useropt) {
188: my %Tmp = &Apache::lonnet::dump('resourcedata',
189: $current_domain,$current_name);
190: while (my ($name,$value) = each(%Tmp)) {
191: if ($name =~ /^error: 2/ || $name =~ /no such file/) {
192: undef(%useropt);
193: last;
194: }
195: $useropt{$userprefix.$name}=$value;
196: }
197: }
198: }
199:
200: ########################################################
201: ########################################################
202:
203: =pod
204:
205: =head2 assesscalc object methods
206:
207: =cut
208:
209: ########################################################
210: ########################################################
211: sub ensure_current_parameter_caches {
212: my $self = shift;
213: if (! defined($current_course) ||
214: $current_course ne $ENV{'request.course.id'} ) {
215: $current_course = $ENV{'request.course.id'};
216: undef(%courseopt);
217: }
218: if (! defined($current_name) || $current_name ne $self->{'name'} ||
219: ! defined($current_domain) || $current_domain ne $self->{'domain'}) {
220: $current_domain = $self->{'domain'};
221: $current_name = $self->{'name'};
222: undef(%useropt);
223: }
224: &load_parameter_caches();
225: }
226:
227: ##################################################
228: ##################################################
229:
230: =pod
231:
232: =item &parmval()
233:
234: Determine the value of a parameter.
235:
236: Inputs: $what, the parameter needed, $symb, $uname, $udom, $csec
237:
238: Returns: The value of a parameter, or '' if none.
239:
240: This function cascades through the possible levels searching for a value for
241: a parameter. The levels are checked in the following order:
242: user, course (at section level and course level), map, and lonnet::metadata.
243: This function uses %parmhash, which must be tied prior to calling it.
244: This function also requires %courseopt and %useropt to be initialized for
245: this user and course.
246:
247: =cut
248:
249: ##################################################
250: ##################################################
251: sub parmval {
252: my $self = shift;
253: my ($what,$symb,$uname,$udom,$csec,$recurse)=@_;
254: $uname = $self->{'name'} if (! defined($uname));
255: $udom = $self->{'domain'} if (! defined($udom));
256: $csec = $self->{'section'} if (! defined($csec));
257: $symb = $self->{'symb'} if (! defined($symb));
258: #
259: my $result='';
260: #
261: # This should be a
262: my ($mapname,$id,$fn)=split(/___/,$symb);
263: # Cascading lookup scheme
264: my $rwhat=$what;
265: $what =~ s/^parameter\_//;
266: $what =~ s/\_([^\_]+)$/\.$1/;
267: #
268: my $symbparm = $symb.'.'.$what;
269: my $mapparm = $mapname.'___(all).'.$what;
270: my $courseprefix = $self->{'cid'};
271: my $usercourseprefix = $uname.'_'.$udom.'_'.$self->{'cid'};
272: #
273: my $seclevel = $courseprefix.'.['.$csec.'].'.$what;
274: my $seclevelr = $courseprefix.'.['.$csec.'].'.$symbparm;
275: my $seclevelm = $courseprefix.'.['.$csec.'].'.$mapparm;
276: #
277: my $courselevel = $courseprefix.'.'.$what;
278: my $courselevelr = $courseprefix.'.'.$symbparm;
279: my $courselevelm = $courseprefix.'.'.$mapparm;
280: #
281: my $ucourselevel = $usercourseprefix.'.'.$what;
282: my $ucourselevelr = $usercourseprefix.'.'.$symbparm;
283: my $ucourselevelm = $usercourseprefix.'.'.$mapparm;
284: # check user
285: if (defined($uname)) {
286: return $useropt{$ucourselevelr} if (defined($useropt{$ucourselevelr}));
287: return $useropt{$ucourselevelm} if (defined($useropt{$ucourselevelm}));
288: return $useropt{$ucourselevel} if (defined($useropt{$ucourselevel}));
289: }
290: # check section
291: if (defined($csec)) {
292: return $courseopt{$seclevelr} if (defined($courseopt{$seclevelr}));
293: return $courseopt{$seclevelm} if (defined($courseopt{$seclevelm}));
294: return $courseopt{$seclevel} if (defined($courseopt{$seclevel}));
295: }
296: #
297: # check course
298: return $courseopt{$courselevelr} if (defined($courseopt{$courselevelr}));
299: return $courseopt{$courselevelm} if (defined($courseopt{$courselevelm}));
300: return $courseopt{$courselevel} if (defined($courseopt{$courselevel}));
301: # check map parms
302: my $thisparm = $parmhash{$symbparm};
303: return $thisparm if (defined($thisparm));
304: # check default
305: $thisparm = &Apache::lonnet::metadata($fn,$rwhat.'.default');
306: return $thisparm if (defined($thisparm));
307: #
308: # Cascade Up
309: my $space=$what;
310: $space=~s/\.\w+$//;
311: if ($space ne '0') {
312: my @parts=split(/_/,$space);
313: my $id=pop(@parts);
314: my $part=join('_',@parts);
315: if ($part eq '') { $part='0'; }
316: my $newwhat=$rwhat;
317: $newwhat=~s/\Q$space\E/$part/;
318: my $partgeneral=$self->parmval($newwhat,$symb,$uname,$udom,$csec,1);
319: if (defined($partgeneral)) { return $partgeneral; }
320: }
321: if ($recurse) { return undef; }
322: my $pack_def=&Apache::lonnet::packages_tab_default($fn,'resource.'.$what);
323: if (defined($pack_def)) { return $pack_def; }
324: #nothing defined
325: return '';
326: }
327:
328: sub get_html_title {
329: my $self = shift;
330: my ($assess_title,$name,$time) = $self->get_title();
331: my $title = '<h1>'.$assess_title.'</h1>'.
332: '<h2>'.$name.', '.
333: &Apache::loncommon::aboutmewrapper
334: ($self->{'name'}.'@'.$self->{'domain'},
335: $self->{'name'},$self->{'domain'});
336: $title .= '<h3>'.$time.'</h3>';
337: return $title;
338: }
339:
340: sub get_title {
341: my $self = shift;
342: my @title = ();
343: if (($self->{'symb'} eq '_feedback') ||
344: ($self->{'symb'} eq '_evaluation') ||
345: ($self->{'symb'} eq '_discussion') ||
346: ($self->{'symb'} eq '_tutoring')) {
347: my $assess_title = ucfirst($self->{'symb'});
348: $assess_title =~ s/^_//;
349: push(@title,$assess_title);
350: } else {
351: push(@title,&Apache::lonnet::gettitle($self->{'symb'}));
352: }
353: # Look up the users identifying information
354: # Get the users information
355: my %userenv = &Apache::loncoursedata::GetUserName($self->{'name'},
356: $self->{'domain'});
357: my $name =
358: join(' ',@userenv{'firstname','middlename','lastname','generation'});
359: $name =~ s/\s+$//;
360: push (@title,$name);
361: push (@title,scalar(localtime(time)));
362: return @title;
363: }
364:
365: sub parent_link {
366: my $self = shift;
367: my $link .= '<p><a href="/adm/studentcalc?'.
368: 'sname='.$self->{'name'}.
369: '&sdomain='.$self->{'domain'}.'">'.
370: 'Student level sheet</a></p>'."\n";
371: return $link;
372: }
373:
374: sub outsheet_html {
375: my $self = shift;
376: my ($r) = @_;
377: ###################################
378: # Determine table structure
379: ###################################
380: my $importcolor = '#FFFFFF';
381: my $exportcolor = '#FFFFAA';
382: my $num_uneditable = 1;
383: my $num_left = 52-$num_uneditable;
384: my $tableheader =<<"END";
385: <table border="2">
386: <tr>
387: <th colspan="2" rowspan="2"><font size="+2">Assessment</font></th>
388: <td bgcolor="$importcolor" colspan="$num_uneditable"> </td>
389: <td colspan="$num_left">
390: <b><font size="+1">Calculations</font></b></td>
391: </tr><tr>
392: END
393: my $label_num = 0;
394: foreach (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz')){
395: if ($label_num<$num_uneditable) {
396: $tableheader .= '<td bgcolor="'.$importcolor.'">';
397: } else {
398: $tableheader .= '<td>';
399: }
400: $tableheader .= "<b><font size=+1>$_</font></b></td>";
401: $label_num++;
402: }
403: $tableheader.="</tr>\n";
404: #
405: $r->print($tableheader);
406: #
407: # Print out template row
408: $r->print('<tr><td>Template</td><td> </td>'.
409: $self->html_template_row($num_uneditable,$importcolor).
410: "</tr>\n");
411: #
412: # Print out summary/export row
413: $r->print('<tr><td>Export</td><td>0</td>'.
414: $self->html_export_row($exportcolor)."</tr>\n");
415: #
416: # Prepare to output rows
417: $tableheader =<<"END";
418: <table border="2">
419: <tr><th>row</th><th>Item</th>
420: END
421: foreach (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz')){
422: if ($label_num<$num_uneditable) {
423: $tableheader.='<th bgcolor="'.$importcolor.'">';
424: } else {
425: $tableheader.='<th>';
426: }
427: $tableheader.="<b><font size=+1>$_</font></b></th>";
428: }
429: #
430: my $num_output = 0;
431: foreach my $rownum (sort {$a <=> $b} ($self->rows())) {
432: if ($num_output++ % 50 == 0) {
433: $r->print("</table>\n".$tableheader);
434: }
435: $r->print('<tr><td>'.$rownum.'</td>'.
436: $self->assess_html_row($rownum,$importcolor)."</tr>\n");
437: }
438: $r->print("</table>\n");
439: return;
440: }
441:
442: sub assess_html_row {
443: my $self = shift();
444: my ($row,$importcolor) = @_;
445: my $parameter_name = $self->{'formulas'}->{'A'.$row};
446: my @rowdata = $self->get_row($row);
447: my $num_cols_output = 0;
448: my $row_html;
449: if (exists($nice_parameter_name{$parameter_name})) {
450: my $name = $nice_parameter_name{$parameter_name};
451: $name =~ s/ /\ /g;
452: $row_html .= '<td>'.$name.'<br />'.$parameter_name.'</td>';
453: } else {
454: $row_html .= '<td>'.$parameter_name.'</td>';
455: }
456: foreach my $cell (@rowdata) {
457: if ($num_cols_output < 1) {
458: $row_html .= '<td bgcolor="'.$importcolor.'">';
459: $row_html .= &Apache::Spreadsheet::html_uneditable_cell($cell,
460: '#FFDDDD');
461: } else {
462: $row_html .= '<td bgcolor="#EOFFDD">';
463: $row_html .= &Apache::Spreadsheet::html_editable_cell($cell,
464: '#E0FFDD',1);
465: }
466: $row_html .= '</td>';
467: $num_cols_output++;
468: }
469: return $row_html;
470: }
471:
472: sub csv_rows {
473: # writes the meat of the spreadsheet to an excel worksheet. Called
474: # by Spreadsheet::outsheet_excel;
475: my $self = shift;
476: my ($filehandle) = @_;
477: #
478: # Write a header row
479: $self->csv_output_row($filehandle,undef,
480: ('Parameter','Description','Value'));
481: #
482: # Write each row
483: foreach my $rownum (sort {$a <=> $b} ($self->rows())) {
484: my $parameter_name = $self->{'formulas'}->{'A'.$rownum};
485: my $description = '';
486: if (exists($nice_parameter_name{$parameter_name})) {
487: $description = $nice_parameter_name{$parameter_name};
488: }
489: $self->csv_output_row($filehandle,$rownum,
490: $parameter_name,$description);
491: }
492: return;
493: }
494:
495: sub excel_rows {
496: # writes the meat of the spreadsheet to an excel worksheet. Called
497: # by Spreadsheet::outsheet_excel;
498: my $self = shift;
499: my ($worksheet,$cols_output,$rows_output) = @_;
500: #
501: # Write a header row
502: $cols_output = 0;
503: foreach my $value ('Parameter','Description','Value') {
504: $worksheet->write($rows_output,$cols_output++,$value);
505: }
506: $rows_output++;
507: #
508: # Write each row
509: foreach my $rownum (sort {$a <=> $b} ($self->rows())) {
510: my $parameter_name = $self->{'formulas'}->{'A'.$rownum};
511: my $description = '';
512: if (exists($nice_parameter_name{$parameter_name})) {
513: $description = $nice_parameter_name{$parameter_name};
514: }
515: $self->excel_output_row($worksheet,$rownum,$rows_output++,
516: $parameter_name,$description);
517: }
518: return;
519: }
520:
521: sub compute {
522: my $self = shift;
523: # $self->logthis('computing');
524: $self->initialize_safe_space();
525: #########################################
526: #########################################
527: ### ###
528: ### Retrieve the problem parameters ###
529: ### ###
530: #########################################
531: #########################################
532: my @Mandatory_parameters = ("stores_0_solved",
533: "stores_0_awarddetail",
534: "stores_0_awarded",
535: "timestamp",
536: "stores_0_tries",
537: "stores_0_award");
538: #
539: # Definitions
540: undef(%nice_parameter_name);
541: my %parameters; # holds underscored parameters by name
542: #
543: # Get the metadata fields and determine their proper names
544: my ($symap,$syid,$srcf)=split(/___/,$self->{'symb'});
545: my @Metadata = split(/\,/,&Apache::lonnet::metadata($srcf,'keys'));
546: foreach my $parm (@Mandatory_parameters,@Metadata) {
547: next if ($parm !~ /^(resource\.|stores|parameter)_/);
548: my $cleaned_name = $parm;
549: $cleaned_name =~ s/^resource\./stores_/;
550: $cleaned_name =~ s/\./_/g;
551: my $display = &Apache::lonnet::metadata($srcf,
552: $cleaned_name.'.display');
553: if (! $display) {
554: $display .= &Apache::lonnet::metadata($srcf,$cleaned_name.'.name');
555: }
556: $parameters{$cleaned_name}++;
557: $nice_parameter_name{$cleaned_name} = $display;
558: }
559: #
560: # Get the values of the metadata fields
561: $self->ensure_current_parameter_caches();
562: my $filename = $self->{'coursefilename'}.'_parms.db';
563: if (tie(%parmhash,'GDBM_File',
564: $self->{'coursefilename'}.'_parms.db',&GDBM_READER(),0640)) {
565: foreach my $parmname (keys(%parameters)) {
566: my $value = $self->parmval($parmname);
567: $parameters{$parmname} =$value;
568: }
569: untie(%parmhash);
570: } else {
571: $self->logthis('unable to tie '.$filename);
572: }
573: #
574: # Clean out unnecessary parameters
575: foreach (keys(%parameters)) {
576: delete($parameters{$_}) if (! /(resource\.|stores_|parameter_)/);
577: }
578: #
579: # Get the students performance data
580: my %student_parameters =
581: &Apache::loncoursedata::get_current_state($self->{'name'},
582: $self->{'domain'},
583: $self->{'symb'},
584: $self->{'cid'});
585: while (my ($parm,$value) = each(%student_parameters)) {
586: $parm =~ s/^resource\./stores_/;
587: $parm =~ s/\./_/g;
588: $parameters{$parm} = $value;
589: }
590: #
591: # Set up the formulas and parameter values
592: my %f=$self->formulas();
593: my %c;
594: #
595: # Check for blackout requirements
596: if ((!exists($ENV{'request.role.adv'}) || !$ENV{'request.role.adv'})) {
597: while (my ($parm,$value) = each(%parameters)) {
598: last if ($self->blackout());
599: next if ($parm !~ /^(parameter_.*)_problemstatus$/);
600: if ($parameters{$1.'_answerdate'} ne '' &&
601: $parameters{$1.'_answerdate'} < time) {
602: next;
603: }
604: if (lc($value) eq 'no') {
605: # We must blackout this sheet
606: $self->blackout(1);
607: }
608: }
609: }
610: #
611: # Move the parameters into the spreadsheet
612: while (my ($parm,$value) = each(%parameters)) {
613: my $cell = 'A'.$self->get_row_number_from_key($parm);
614: $f{$cell} = $parm;
615: $value = '"'.$value.'"' if ($value =~/[^0-9.]/);
616: $c{$parm} = $value;
617: }
618: $self->formulas(\%f);
619: $self->constants(\%c);
620: $self->calcsheet();
621: #
622: # Store export row in cache
623: my @exportarray = $self->exportrow();
624: $Exportrows{$self->{'symb'}}->{'time'} = time;
625: $Exportrows{$self->{'symb'}}->{$self->{'filename'}} = \@exportarray;
626: #
627: # Save the export data
628: $self->save_export_data();
629: $self->save() if ($self->need_to_save());
630: return;
631: }
632:
633: ##
634: ## sett overrides Spreadsheet::sett
635: ##
636: sub sett {
637: my $self = shift;
638: my %t=();
639: #
640: # Deal with the template row by copying the template formulas into each
641: # row.
642: foreach my $col ($self->template_cells()) {
643: next if ($col=~/^A/);
644: foreach my $row ($self->rows()) {
645: # Get the name of this cell
646: my $cell=$col.$row;
647: # Grab the template declaration
648: $t{$cell}=$self->formula('template_'.$col);
649: # Replace '#' with the row number
650: $t{$cell}=~s/\#/$row/g;
651: # Replace '....' with ','
652: $t{$cell}=~s/\.\.+/\,/g;
653: # Replace 'A0' with the value from 'A0'
654: $t{$cell}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
655: # Replace parameters
656: $t{$cell}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
657: }
658: }
659: #
660: # Deal with the cells which have formulas
661: while (my ($cell,$formula) = each(%{$self->{'formulas'}})) {
662: next if ($cell =~ /template_/);
663: if ($cell =~ /^A/ && $cell ne 'A0') {
664: if ($formula !~ /^\!/) {
665: $t{$cell}=$self->{'constants'}->{$formula};
666: }
667: } else {
668: $t{$cell}=$formula;
669: $t{$cell}=~s/\.\.+/\,/g;
670: $t{$cell}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
671: $t{$cell}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
672: }
673: }
674: # Put %t into the safe space
675: %{$self->{'safe'}->varglob('t')}=%t;
676: }
677:
678:
679: ########################################################
680: ########################################################
681:
682: =pod
683:
684: =item &load_cached_export_rows()
685:
686: Retrieves and parsers the export rows of the assessment spreadsheets.
687: These rows are saved in the students directory in the format:
688:
689: sname:sdom:assesscalc:symb.time => time
690:
691: sname:sdom:assesscalc:symb => filename___=___Adata___;___Bdata___;___ ...
692:
693: =cut
694:
695: ########################################################
696: ########################################################
697: sub load_cached_export_rows {
698: %Exportrows = undef;
699: my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets_'.
700: $ENV{'request.course.id'},
701: $current_domain,$current_name,undef);
702: if ($tmp[0]!~/^error/) {
703: my %tmp = @tmp;
704: my $default_filename = $ENV{'course.'.$ENV{'request.course.id'}.
705: '.spreadsheet_default_assesscalc'};
706: # We only got one key, so we will access it directly.
707: while (my ($key,$sheetdata) = each(%tmp)) {
708: my ($sname,$sdom,$sheettype,$symb) = split(':',$key);
709: if ($symb =~ /\.time$/) {
710: $symb =~ s/\.time$//;
711: $Exportrows{$symb}->{'time'} = $sheetdata;
712: } else {
713: $sheetdata =~ s/^(.*)___=___//;
714: my $filename = $1;
715: $filename = $default_filename if (! defined($filename));
716: my @Data = split('___;___',$sheetdata);
717: $Exportrows{$symb}->{$filename} = \@Data;
718: }
719: }
720: }
721: }
722:
723: #############################################
724: #############################################
725:
726: =pod
727:
728: =item &export_data
729:
730: Returns the export data associated with the spreadsheet. Computes the
731: spreadsheet only if necessary.
732:
733: =cut
734:
735: #############################################
736: #############################################
737: sub export_data {
738: my $self = shift;
739: my $symb = $self->{'symb'};
740: if (! exists($ENV{'request.role.adv'}) || ! $ENV{'request.role.adv'} ||
741: ! exists($Exportrows{$symb}) || ! defined($Exportrows{$symb}) ||
742: ! $self->check_expiration_time($Exportrows{$symb}->{'time'}) ||
743: ! exists($Exportrows{$symb}->{$self->{'filename'}}) ||
744: ! defined($Exportrows{$symb}->{$self->{'filename'}})) {
745: $self->compute();
746: }
747: my @Data = @{$Exportrows{$symb}->{$self->{'filename'}}};
748: if ($Data[0] =~ /^(.*)___=___/) {
749: $self->{'sheetname'} = $1;
750: $Data[0] =~ s/^(.*)___=___//;
751: }
752: for (my $i=0;$i<$#Data;$i++) {
753: $Data[$i]="'".$Data[$i]."'" if ($Data[$i]=~/\D/ && defined($Data[$i]));
754: }
755: return @Data;
756: }
757:
758: #############################################
759: #############################################
760:
761: =pod
762:
763: =item &save_export_data()
764:
765: Writes the export data for this spreadsheet to the students cache.
766:
767: =cut
768:
769: #############################################
770: #############################################
771: sub save_export_data {
772: my $self = shift;
773: return if ($self->temporary());
774: my $student = $self->{'name'}.':'.$self->{'domain'};
775: my $symb = $self->{'symb'};
776: if (! exists($Exportrows{$symb}) ||
777: ! exists($Exportrows{$symb}->{$self->{'filename'}})) {
778: return;
779: }
780: my $key = join(':',($self->{'name'},$self->{'domain'},'assesscalc',$symb));
781: my $timekey = $key.'.time';
782: my $newstore= join('___;___',@{$Exportrows{$symb}->{$self->{'filename'}}});
783: $newstore = $self->{'filename'}.'___=___'.$newstore;
784: my $result = &Apache::lonnet::put
785: ('nohist_calculatedsheets_'.$ENV{'request.course.id'},
786: { $key => $newstore,
787: $timekey => $Exportrows{$symb}->{'time'} },
788: $self->{'domain'},
789: $self->{'name'});
790:
791: return;
792: }
793:
794: 1;
795:
796: __END__
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