File:
[LON-CAPA] /
loncom /
interface /
spreadsheet /
assesscalc.pm
Revision
1.17:
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Tue Jul 29 05:22:56 2003 UTC (20 years, 11 months ago) by
albertel
Branches:
MAIN
CVS tags:
version_1_0_2,
version_1_0_1,
version_1_0_0,
version_0_99_5,
version_0_99_4,
HEAD
- Fixes for BUG#1991, (maybe packages.tab will finally be handled correctly? One can only hope)
- Made thes changes I said I was going to in the bugreport (copied below for conviene and commit padding)
1) stop metadata from parsing packages.tab values and sticking them in the
metadata of the problem
2) add new function get pacakages_tab_default() to lonnet, takeas a full parm
signifier (resource.partid_responseid.name) (just like EXT takes) figures out
what kind of response/part the things is and returns the proper default value
from packages.tab
3) add to EXT to check this new function for the packages.tab default for
anythings it can't find a value for
4) check that all other parmval funtions also do this
4) turned out to be assesscalc.pm and lonnavmaps.pm, and executive decision was made to leave lonparmset.pm out of the fix, as there is nothing the user can do about these values, adn they see the defaults appear in the 'Current session value' column.
(as it is it would be difficult to add these values to the parmset screen, one would need a colun at the very end that said "if ther are no other values set anywhere else, we'll use this one.)
Anyhoo.
1: #
2: # $Id: assesscalc.pm,v 1.17 2003/07/29 05:22:56 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 HTML::Entities();
52: use Spreadsheet::WriteExcel;
53: use GDBM_File;
54: use Time::HiRes;
55:
56: @Apache::assesscalc::ISA = ('Apache::Spreadsheet');
57:
58: ########################################################
59: ########################################################
60:
61: =pod
62:
63: =head2 Package Variables
64:
65: =over 4
66:
67: =item %Exportrows
68:
69: =item $current_name
70:
71: =item $current_domain
72:
73: =item $current_course
74:
75: =item %parmhash
76:
77: =item %nice_parameter_name
78:
79: =item %useropt
80:
81: =item %courseopt
82:
83: =back
84:
85: =cut
86:
87: ########################################################
88: ########################################################
89:
90: my %Exportrows;
91:
92: my $current_name;
93: my $current_domain;
94: my $current_course;
95:
96: my %parmhash;
97: my %nice_parameter_name;
98:
99: my %useropt;
100: my %courseopt;
101:
102: ########################################################
103: ########################################################
104:
105: =pod
106:
107: =head2 Package Subroutines
108:
109: =item &clear_package()
110:
111: Reset all package variables.
112:
113: =cut
114:
115: ########################################################
116: ########################################################
117: sub clear_package {
118: undef(%Exportrows);
119: undef($current_name);
120: undef($current_domain);
121: undef($current_course);
122: undef(%useropt);
123: undef(%courseopt);
124: }
125:
126: sub initialize {
127: &clear_package();
128: }
129:
130: ########################################################
131: ########################################################
132:
133: =pod
134:
135: =item &initialize_package()
136:
137: =cut
138:
139: ########################################################
140: ########################################################
141: sub initialize_package {
142: my ($sname,$sdomain) = @_;
143: $current_name = $sname;
144: $current_domain = $sdomain;
145: if ($current_course ne $ENV{'request.course.id'}) {
146: $current_course = $ENV{'request.course.id'};
147: undef(%courseopt);
148: }
149: &load_cached_export_rows();
150: &load_parameter_caches();
151: }
152:
153: ########################################################
154: ########################################################
155:
156: =pod
157:
158: =item &load_parameter_caches()
159:
160: =cut
161:
162: ########################################################
163: ########################################################
164: sub load_parameter_caches {
165: my $userprefix = $current_name.':'.$current_domain.'_';
166: $userprefix =~ s/:/_/g;
167: #
168: # Course Parameters Cache
169: if (! %courseopt) {
170: &Apache::lonnet::logthis("loading course options");
171: $current_course = $ENV{'request.course.id'};
172: undef(%courseopt);
173: if (! defined($current_name) || ! defined($current_domain)) {
174: &Apache::lonnet::logthis('bad call to setup_parameter_caches');
175: return;
176: }
177: my $dom = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
178: my $id = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
179: my %Tmp = &Apache::lonnet::dump('resourcedata',$dom,$id);
180: while (my ($name,$value) = each(%Tmp)) {
181: $courseopt{$name}=$value;
182: }
183: }
184: if (! %useropt) {
185: my %Tmp = &Apache::lonnet::dump('resourcedata',
186: $current_domain,$current_name);
187: while (my ($name,$value) = each(%Tmp)) {
188: if ($name =~ /^error: 2/ || $name =~ /no such file/) {
189: undef(%useropt);
190: last;
191: }
192: $useropt{$userprefix.$name}=$value;
193: }
194: }
195: }
196:
197: ########################################################
198: ########################################################
199:
200: =pod
201:
202: =head2 assesscalc object methods
203:
204: =cut
205:
206: ########################################################
207: ########################################################
208: sub ensure_current_parameter_caches {
209: my $self = shift;
210: if (! defined($current_course) ||
211: $current_course ne $ENV{'request.course.id'} ) {
212: $current_course = $ENV{'request.course.id'};
213: undef(%courseopt);
214: }
215: if (! defined($current_name) || $current_name ne $self->{'name'} ||
216: ! defined($current_domain) || $current_domain ne $self->{'domain'}) {
217: $current_domain = $self->{'domain'};
218: $current_name = $self->{'name'};
219: undef(%useropt);
220: }
221: &load_parameter_caches();
222: }
223:
224: ##################################################
225: ##################################################
226:
227: =pod
228:
229: =item &parmval()
230:
231: Determine the value of a parameter.
232:
233: Inputs: $what, the parameter needed, $symb, $uname, $udom, $csec
234:
235: Returns: The value of a parameter, or '' if none.
236:
237: This function cascades through the possible levels searching for a value for
238: a parameter. The levels are checked in the following order:
239: user, course (at section level and course level), map, and lonnet::metadata.
240: This function uses %parmhash, which must be tied prior to calling it.
241: This function also requires %courseopt and %useropt to be initialized for
242: this user and course.
243:
244: =cut
245:
246: ##################################################
247: ##################################################
248: sub parmval {
249: my $self = shift;
250: my ($what,$symb,$uname,$udom,$csec,$recurse)=@_;
251: $uname = $self->{'name'} if (! defined($uname));
252: $udom = $self->{'domain'} if (! defined($udom));
253: $csec = $self->{'section'} if (! defined($csec));
254: $symb = $self->{'symb'} if (! defined($symb));
255: #
256: my $result='';
257: #
258: # This should be a
259: my ($mapname,$id,$fn)=split(/___/,$symb);
260: # Cascading lookup scheme
261: my $rwhat=$what;
262: $what =~ s/^parameter\_//;
263: $what =~ s/\_([^\_]+)$/\.$1/;
264: #
265: my $symbparm = $symb.'.'.$what;
266: my $mapparm = $mapname.'___(all).'.$what;
267: my $courseprefix = $self->{'cid'};
268: my $usercourseprefix = $uname.'_'.$udom.'_'.$self->{'cid'};
269: #
270: my $seclevel = $courseprefix.'.['.$csec.'].'.$what;
271: my $seclevelr = $courseprefix.'.['.$csec.'].'.$symbparm;
272: my $seclevelm = $courseprefix.'.['.$csec.'].'.$mapparm;
273: #
274: my $courselevel = $courseprefix.'.'.$what;
275: my $courselevelr = $courseprefix.'.'.$symbparm;
276: my $courselevelm = $courseprefix.'.'.$mapparm;
277: #
278: my $ucourselevel = $usercourseprefix.'.'.$what;
279: my $ucourselevelr = $usercourseprefix.'.'.$symbparm;
280: my $ucourselevelm = $usercourseprefix.'.'.$mapparm;
281: # check user
282: if (defined($uname)) {
283: return $useropt{$ucourselevelr} if (defined($useropt{$ucourselevelr}));
284: return $useropt{$ucourselevelm} if (defined($useropt{$ucourselevelm}));
285: return $useropt{$ucourselevel} if (defined($useropt{$ucourselevel}));
286: }
287: # check section
288: if (defined($csec)) {
289: return $courseopt{$seclevelr} if (defined($courseopt{$seclevelr}));
290: return $courseopt{$seclevelm} if (defined($courseopt{$seclevelm}));
291: return $courseopt{$seclevel} if (defined($courseopt{$seclevel}));
292: }
293: #
294: # check course
295: return $courseopt{$courselevelr} if (defined($courseopt{$courselevelr}));
296: return $courseopt{$courselevelm} if (defined($courseopt{$courselevelm}));
297: return $courseopt{$courselevel} if (defined($courseopt{$courselevel}));
298: # check map parms
299: my $thisparm = $parmhash{$symbparm};
300: return $thisparm if (defined($thisparm));
301: # check default
302: $thisparm = &Apache::lonnet::metadata($fn,$rwhat.'.default');
303: return $thisparm if (defined($thisparm));
304: #
305: # Cascade Up
306: my $space=$what;
307: $space=~s/\.\w+$//;
308: if ($space ne '0') {
309: my @parts=split(/_/,$space);
310: my $id=pop(@parts);
311: my $part=join('_',@parts);
312: if ($part eq '') { $part='0'; }
313: my $newwhat=$rwhat;
314: $newwhat=~s/\Q$space\E/$part/;
315: my $partgeneral=$self->parmval($newwhat,$symb,$uname,$udom,$csec,1);
316: if (defined($partgeneral)) { return $partgeneral; }
317: }
318: if ($recurse) { return undef; }
319: my $pack_def=&Apache::lonnet::packages_tab_default($fn,'resource.'.$what);
320: if (defined($pack_def)) { return $pack_def; }
321: #nothing defined
322: return '';
323: }
324:
325: sub get_html_title {
326: my $self = shift;
327: my ($assess_title,$name,$time) = $self->get_title();
328: my $title = '<h1>'.$assess_title.'</h1>'.
329: '<h2>'.$name.', '.
330: &Apache::loncommon::aboutmewrapper
331: ($self->{'name'}.'@'.$self->{'domain'},
332: $self->{'name'},$self->{'domain'});
333: $title .= '<h3>'.$time.'</h3>';
334: return $title;
335: }
336:
337: sub get_title {
338: my $self = shift;
339: my @title = ();
340: if (($self->{'symb'} eq '_feedback') ||
341: ($self->{'symb'} eq '_evaluation') ||
342: ($self->{'symb'} eq '_discussion') ||
343: ($self->{'symb'} eq '_tutoring')) {
344: my $assess_title = ucfirst($self->{'symb'});
345: $assess_title =~ s/^_//;
346: push(@title,$assess_title);
347: } else {
348: push(@title,&Apache::lonnet::gettitle($self->{'symb'}));
349: }
350: # Look up the users identifying information
351: # Get the users information
352: my %userenv = &Apache::loncoursedata::GetUserName($self->{'name'},
353: $self->{'domain'});
354: my $name =
355: join(' ',@userenv{'firstname','middlename','lastname','generation'});
356: $name =~ s/\s+$//;
357: push (@title,$name);
358: push (@title,scalar(localtime(time)));
359: return @title;
360: }
361:
362: sub parent_link {
363: my $self = shift;
364: my $link .= '<p><a href="/adm/studentcalc?'.
365: 'sname='.$self->{'name'}.
366: '&sdomain='.$self->{'domain'}.'">'.
367: 'Student level sheet</a></p>'."\n";
368: return $link;
369: }
370:
371: sub outsheet_html {
372: my $self = shift;
373: my ($r) = @_;
374: ###################################
375: # Determine table structure
376: ###################################
377: my $importcolor = '#FFFFFF';
378: my $exportcolor = '#FFFFAA';
379: my $num_uneditable = 1;
380: my $num_left = 52-$num_uneditable;
381: my $tableheader =<<"END";
382: <table border="2">
383: <tr>
384: <th colspan="2" rowspan="2"><font size="+2">Assessment</font></th>
385: <td bgcolor="$importcolor" colspan="$num_uneditable"> </td>
386: <td colspan="$num_left">
387: <b><font size="+1">Calculations</font></b></td>
388: </tr><tr>
389: END
390: my $label_num = 0;
391: foreach (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz')){
392: if ($label_num<$num_uneditable) {
393: $tableheader .= '<td bgcolor="'.$importcolor.'">';
394: } else {
395: $tableheader .= '<td>';
396: }
397: $tableheader .= "<b><font size=+1>$_</font></b></td>";
398: $label_num++;
399: }
400: $tableheader.="</tr>\n";
401: #
402: $r->print($tableheader);
403: #
404: # Print out template row
405: $r->print('<tr><td>Template</td><td> </td>'.
406: $self->html_template_row($num_uneditable,$importcolor).
407: "</tr>\n");
408: #
409: # Print out summary/export row
410: $r->print('<tr><td>Export</td><td>0</td>'.
411: $self->html_export_row($exportcolor)."</tr>\n");
412: #
413: # Prepare to output rows
414: $tableheader =<<"END";
415: <table border="2">
416: <tr><th>row</th><th>Item</th>
417: END
418: foreach (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz')){
419: if ($label_num<$num_uneditable) {
420: $tableheader.='<th bgcolor="'.$importcolor.'">';
421: } else {
422: $tableheader.='<th>';
423: }
424: $tableheader.="<b><font size=+1>$_</font></b></th>";
425: }
426: #
427: my $num_output = 0;
428: foreach my $rownum (sort {$a <=> $b} ($self->rows())) {
429: if ($num_output++ % 50 == 0) {
430: $r->print("</table>\n".$tableheader);
431: }
432: $r->print('<tr><td>'.$rownum.'</td>'.
433: $self->assess_html_row($rownum,$importcolor)."</tr>\n");
434: }
435: $r->print("</table>\n");
436: return;
437: }
438:
439: sub assess_html_row {
440: my $self = shift();
441: my ($row,$importcolor) = @_;
442: my $parameter_name = $self->{'formulas'}->{'A'.$row};
443: my @rowdata = $self->get_row($row);
444: my $num_cols_output = 0;
445: my $row_html;
446: if (exists($nice_parameter_name{$parameter_name})) {
447: my $name = $nice_parameter_name{$parameter_name};
448: $name =~ s/ /\ /g;
449: $row_html .= '<td>'.$name.'<br />'.$parameter_name.'</td>';
450: } else {
451: $row_html .= '<td>'.$parameter_name.'</td>';
452: }
453: foreach my $cell (@rowdata) {
454: if ($num_cols_output < 1) {
455: $row_html .= '<td bgcolor="'.$importcolor.'">';
456: $row_html .= &Apache::Spreadsheet::html_uneditable_cell($cell,
457: '#FFDDDD');
458: } else {
459: $row_html .= '<td bgcolor="#EOFFDD">';
460: $row_html .= &Apache::Spreadsheet::html_editable_cell($cell,
461: '#E0FFDD',1);
462: }
463: $row_html .= '</td>';
464: $num_cols_output++;
465: }
466: return $row_html;
467: }
468:
469: sub csv_rows {
470: # writes the meat of the spreadsheet to an excel worksheet. Called
471: # by Spreadsheet::outsheet_excel;
472: my $self = shift;
473: my ($filehandle) = @_;
474: #
475: # Write a header row
476: $self->csv_output_row($filehandle,undef,
477: ('Parameter','Description','Value'));
478: #
479: # Write each row
480: foreach my $rownum (sort {$a <=> $b} ($self->rows())) {
481: my $parameter_name = $self->{'formulas'}->{'A'.$rownum};
482: my $description = '';
483: if (exists($nice_parameter_name{$parameter_name})) {
484: $description = $nice_parameter_name{$parameter_name};
485: }
486: $self->csv_output_row($filehandle,$rownum,
487: $parameter_name,$description);
488: }
489: return;
490: }
491:
492: sub excel_rows {
493: # writes the meat of the spreadsheet to an excel worksheet. Called
494: # by Spreadsheet::outsheet_excel;
495: my $self = shift;
496: my ($worksheet,$cols_output,$rows_output) = @_;
497: #
498: # Write a header row
499: $cols_output = 0;
500: foreach my $value ('Parameter','Description','Value') {
501: $worksheet->write($rows_output,$cols_output++,$value);
502: }
503: $rows_output++;
504: #
505: # Write each row
506: foreach my $rownum (sort {$a <=> $b} ($self->rows())) {
507: my $parameter_name = $self->{'formulas'}->{'A'.$rownum};
508: my $description = '';
509: if (exists($nice_parameter_name{$parameter_name})) {
510: $description = $nice_parameter_name{$parameter_name};
511: }
512: $self->excel_output_row($worksheet,$rownum,$rows_output++,
513: $parameter_name,$description);
514: }
515: return;
516: }
517:
518: sub compute {
519: my $self = shift;
520: # $self->logthis('computing');
521: $self->initialize_safe_space();
522: #########################################
523: #########################################
524: ### ###
525: ### Retrieve the problem parameters ###
526: ### ###
527: #########################################
528: #########################################
529: my @Mandatory_parameters = ("stores_0_solved",
530: "stores_0_awarddetail",
531: "stores_0_awarded",
532: "timestamp",
533: "stores_0_tries",
534: "stores_0_award");
535: #
536: # Definitions
537: undef(%nice_parameter_name);
538: my %parameters; # holds underscored parameters by name
539: #
540: # Get the metadata fields and determine their proper names
541: my ($symap,$syid,$srcf)=split(/___/,$self->{'symb'});
542: my @Metadata = split(/\,/,&Apache::lonnet::metadata($srcf,'keys'));
543: foreach my $parm (@Mandatory_parameters,@Metadata) {
544: next if ($parm !~ /^(resource\.|stores|parameter)_/);
545: my $cleaned_name = $parm;
546: $cleaned_name =~ s/^resource\./stores_/;
547: $cleaned_name =~ s/\./_/g;
548: my $display = &Apache::lonnet::metadata($srcf,
549: $cleaned_name.'.display');
550: if (! $display) {
551: $display .= &Apache::lonnet::metadata($srcf,$cleaned_name.'.name');
552: }
553: $parameters{$cleaned_name}++;
554: $nice_parameter_name{$cleaned_name} = $display;
555: }
556: #
557: # Get the values of the metadata fields
558: $self->ensure_current_parameter_caches();
559: my $filename = $self->{'coursefilename'}.'_parms.db';
560: if (tie(%parmhash,'GDBM_File',
561: $self->{'coursefilename'}.'_parms.db',&GDBM_READER(),0640)) {
562: foreach my $parmname (keys(%parameters)) {
563: my $value = $self->parmval($parmname);
564: $parameters{$parmname} =$value;
565: }
566: untie(%parmhash);
567: } else {
568: $self->logthis('unable to tie '.$filename);
569: }
570: #
571: # Clean out unnecessary parameters
572: foreach (keys(%parameters)) {
573: delete($parameters{$_}) if (! /(resource\.|stores_|parameter_)/);
574: }
575: #
576: # Get the students performance data
577: my %student_parameters =
578: &Apache::loncoursedata::get_current_state($self->{'name'},
579: $self->{'domain'},
580: $self->{'symb'},
581: $self->{'cid'});
582: while (my ($parm,$value) = each(%student_parameters)) {
583: $parm =~ s/^resource\./stores_/;
584: $parm =~ s/\./_/g;
585: $parameters{$parm} = $value;
586: }
587: #
588: # Set up the formulas and parameter values
589: my %f=$self->formulas();
590: my %c;
591: #
592: # Check for blackout requirements
593: if ((!exists($ENV{'request.role.adv'}) || !$ENV{'request.role.adv'})) {
594: while (my ($parm,$value) = each(%parameters)) {
595: last if ($self->blackout());
596: next if ($parm !~ /^(parameter_.*)_problemstatus$/);
597: next if ($parameters{$1.'_answerdate'}<time);
598: if (lc($value) eq 'no') {
599: # We must blackout this sheet
600: $self->blackout(1);
601: }
602: }
603: }
604: #
605: # Move the parameters into the spreadsheet
606: while (my ($parm,$value) = each(%parameters)) {
607: my $cell = 'A'.$self->get_row_number_from_key($parm);
608: $f{$cell} = $parm;
609: $value = '"'.$value.'"' if ($value =~/[^0-9.]/);
610: $c{$parm} = $value;
611: }
612: $self->formulas(\%f);
613: $self->constants(\%c);
614: $self->calcsheet();
615: #
616: # Store export row in cache
617: my @exportarray = $self->exportrow();
618: $Exportrows{$self->{'symb'}}->{'time'} = time;
619: $Exportrows{$self->{'symb'}}->{$self->{'filename'}} = \@exportarray;
620: #
621: # Save the export data
622: $self->save_export_data();
623: $self->save() if ($self->need_to_save());
624: return;
625: }
626:
627: ##
628: ## sett overrides Spreadsheet::sett
629: ##
630: sub sett {
631: my $self = shift;
632: my %t=();
633: #
634: # Deal with the template row by copying the template formulas into each
635: # row.
636: foreach my $col ($self->template_cells()) {
637: next if ($col=~/^A/);
638: foreach my $row ($self->rows()) {
639: # Get the name of this cell
640: my $cell=$col.$row;
641: # Grab the template declaration
642: $t{$cell}=$self->formula('template_'.$col);
643: # Replace '#' with the row number
644: $t{$cell}=~s/\#/$row/g;
645: # Replace '....' with ','
646: $t{$cell}=~s/\.\.+/\,/g;
647: # Replace 'A0' with the value from 'A0'
648: $t{$cell}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
649: # Replace parameters
650: $t{$cell}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
651: }
652: }
653: #
654: # Deal with the cells which have formulas
655: while (my ($cell,$formula) = each(%{$self->{'formulas'}})) {
656: next if ($cell =~ /template_/);
657: if ($cell =~ /^A/ && $cell ne 'A0') {
658: if ($formula !~ /^\!/) {
659: $t{$cell}=$self->{'constants'}->{$formula};
660: }
661: } else {
662: $t{$cell}=$formula;
663: $t{$cell}=~s/\.\.+/\,/g;
664: $t{$cell}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
665: $t{$cell}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
666: }
667: }
668: # Put %t into the safe space
669: %{$self->{'safe'}->varglob('t')}=%t;
670: }
671:
672:
673: ########################################################
674: ########################################################
675:
676: =pod
677:
678: =item &load_cached_export_rows()
679:
680: Retrieves and parsers the export rows of the assessment spreadsheets.
681: These rows are saved in the students directory in the format:
682:
683: sname:sdom:assesscalc:symb.time => time
684:
685: sname:sdom:assesscalc:symb => filename___=___Adata___;___Bdata___;___ ...
686:
687: =cut
688:
689: ########################################################
690: ########################################################
691: sub load_cached_export_rows {
692: %Exportrows = undef;
693: my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets_'.
694: $ENV{'request.course.id'},
695: $current_domain,$current_name,undef);
696: if ($tmp[0]!~/^error/) {
697: my %tmp = @tmp;
698: my $default_filename = $ENV{'course.'.$ENV{'request.course.id'}.
699: '.spreadsheet_default_assesscalc'};
700: # We only got one key, so we will access it directly.
701: while (my ($key,$sheetdata) = each(%tmp)) {
702: my ($sname,$sdom,$sheettype,$symb) = split(':',$key);
703: if ($symb =~ /\.time$/) {
704: $symb =~ s/\.time$//;
705: $Exportrows{$symb}->{'time'} = $sheetdata;
706: } else {
707: $sheetdata =~ s/^(.*)___=___//;
708: my $filename = $1;
709: $filename = $default_filename if (! defined($filename));
710: my @Data = split('___;___',$sheetdata);
711: $Exportrows{$symb}->{$filename} = \@Data;
712: }
713: }
714: }
715: }
716:
717: #############################################
718: #############################################
719:
720: =pod
721:
722: =item &export_data
723:
724: Returns the export data associated with the spreadsheet. Computes the
725: spreadsheet only if necessary.
726:
727: =cut
728:
729: #############################################
730: #############################################
731: sub export_data {
732: my $self = shift;
733: my $symb = $self->{'symb'};
734: if (! exists($ENV{'request.role.adv'}) || ! $ENV{'request.role.adv'} ||
735: ! exists($Exportrows{$symb}) || ! defined($Exportrows{$symb}) ||
736: ! $self->check_expiration_time($Exportrows{$symb}->{'time'}) ||
737: ! exists($Exportrows{$symb}->{$self->{'filename'}}) ||
738: ! defined($Exportrows{$symb}->{$self->{'filename'}})) {
739: $self->compute();
740: }
741: my @Data = @{$Exportrows{$symb}->{$self->{'filename'}}};
742: if ($Data[0] =~ /^(.*)___=___/) {
743: $self->{'sheetname'} = $1;
744: $Data[0] =~ s/^(.*)___=___//;
745: }
746: for (my $i=0;$i<$#Data;$i++) {
747: $Data[$i]="'".$Data[$i]."'" if ($Data[$i]=~/\D/ && defined($Data[$i]));
748: }
749: return @Data;
750: }
751:
752: #############################################
753: #############################################
754:
755: =pod
756:
757: =item &save_export_data()
758:
759: Writes the export data for this spreadsheet to the students cache.
760:
761: =cut
762:
763: #############################################
764: #############################################
765: sub save_export_data {
766: my $self = shift;
767: return if ($self->temporary());
768: my $student = $self->{'name'}.':'.$self->{'domain'};
769: my $symb = $self->{'symb'};
770: if (! exists($Exportrows{$symb}) ||
771: ! exists($Exportrows{$symb}->{$self->{'filename'}})) {
772: return;
773: }
774: my $key = join(':',($self->{'name'},$self->{'domain'},'assesscalc',$symb));
775: my $timekey = $key.'.time';
776: my $newstore= join('___;___',@{$Exportrows{$symb}->{$self->{'filename'}}});
777: $newstore = $self->{'filename'}.'___=___'.$newstore;
778: my $result = &Apache::lonnet::put
779: ('nohist_calculatedsheets_'.$ENV{'request.course.id'},
780: { $key => $newstore,
781: $timekey => $Exportrows{$symb}->{'time'} },
782: $self->{'domain'},
783: $self->{'name'});
784:
785: return;
786: }
787:
788: 1;
789:
790: __END__
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