Annotation of loncom/interface/spreadsheet/assesscalc.pm, revision 1.15
1.1 matthew 1: #
1.15 ! matthew 2: # $Id: assesscalc.pm,v 1.14 2003/06/23 19:58:18 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: 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;
1.2 matthew 49: use Apache::loncommon;
1.1 matthew 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:
1.11 matthew 126: sub initialize {
127: &clear_package();
128: }
129:
1.1 matthew 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 = $sdomain;
1.13 matthew 145: if ($current_course ne $ENV{'request.course.id'}) {
146: $current_course = $ENV{'request.course.id'};
147: undef(%courseopt);
148: }
1.1 matthew 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)) {
1.3 matthew 181: $courseopt{$name}=$value;
1.1 matthew 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)=@_;
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;
1.3 matthew 267: my $courseprefix = $self->{'cid'};
1.1 matthew 268: my $usercourseprefix = $uname.'_'.$udom.'_'.$self->{'cid'};
269: #
1.3 matthew 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;
1.1 matthew 281: # check user
282: if (defined($uname)) {
1.3 matthew 283: return $useropt{$ucourselevelr} if (defined($useropt{$ucourselevelr}));
284: return $useropt{$ucourselevelm} if (defined($useropt{$ucourselevelm}));
285: return $useropt{$ucourselevel} if (defined($useropt{$ucourselevel}));
1.1 matthew 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,$csec);
316: if (defined($partgeneral)) { return $partgeneral; }
317: }
318: #nothing defined
319: return '';
320: }
321:
1.8 matthew 322: sub get_html_title {
323: my $self = shift;
324: my ($assess_title,$name,$time) = $self->get_title();
325: my $title = '<h1>'.$assess_title.'</h1>'.
326: '<h2>'.$name.', '.
327: &Apache::loncommon::aboutmewrapper
328: ($self->{'name'}.'@'.$self->{'domain'},
329: $self->{'name'},$self->{'domain'});
330: $title .= '<h3>'.$time.'</h3>';
331: return $title;
332: }
333:
1.1 matthew 334: sub get_title {
335: my $self = shift;
1.8 matthew 336: my @title = ();
1.1 matthew 337: if (($self->{'usymb'} eq '_feedback') ||
338: ($self->{'usymb'} eq '_evaluation') ||
339: ($self->{'usymb'} eq '_discussion') ||
340: ($self->{'usymb'} eq '_tutoring')) {
1.8 matthew 341: my $assess_title = ucfirst($self->{'usymb'});
342: $assess_title =~ s/^_//;
343: push(@title,$assess_title);
1.1 matthew 344: } else {
1.8 matthew 345: push(@title,&Apache::lonnet::gettitle($self->{'symb'}));
1.1 matthew 346: }
1.2 matthew 347: # Look up the users identifying information
348: # Get the users information
349: my %userenv = &Apache::loncoursedata::GetUserName($self->{'name'},
350: $self->{'domain'});
351: my $name =
352: join(' ',@userenv{'firstname','middlename','lastname','generation'});
353: $name =~ s/\s+$//;
1.8 matthew 354: push (@title,$name);
355: push (@title,scalar(localtime(time)));
356: return @title;
1.1 matthew 357: }
358:
359: sub parent_link {
360: my $self = shift;
361: my $link .= '<p><a href="/adm/studentcalc?'.
362: 'sname='.$self->{'name'}.
363: '&sdomain='.$self->{'domain'}.'">'.
364: 'Student level sheet</a></p>'."\n";
365: return $link;
366: }
367:
368: sub outsheet_html {
369: my $self = shift;
370: my ($r) = @_;
371: ###################################
372: # Determine table structure
373: ###################################
1.14 matthew 374: my $importcolor = '#FFFFFF';
1.15 ! matthew 375: my $exportcolor = '#FFFFAA';
1.1 matthew 376: my $num_uneditable = 1;
377: my $num_left = 52-$num_uneditable;
378: my $tableheader =<<"END";
379: <table border="2">
380: <tr>
381: <th colspan="2" rowspan="2"><font size="+2">Assessment</font></th>
1.14 matthew 382: <td bgcolor="$importcolor" colspan="$num_uneditable"> </td>
1.1 matthew 383: <td colspan="$num_left">
384: <b><font size="+1">Calculations</font></b></td>
385: </tr><tr>
386: END
387: my $label_num = 0;
388: foreach (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz')){
389: if ($label_num<$num_uneditable) {
1.14 matthew 390: $tableheader .= '<td bgcolor="'.$importcolor.'">';
1.1 matthew 391: } else {
392: $tableheader .= '<td>';
393: }
394: $tableheader .= "<b><font size=+1>$_</font></b></td>";
395: $label_num++;
396: }
397: $tableheader.="</tr>\n";
398: #
399: $r->print($tableheader);
400: #
401: # Print out template row
402: $r->print('<tr><td>Template</td><td> </td>'.
1.14 matthew 403: $self->html_template_row($num_uneditable,$importcolor).
404: "</tr>\n");
1.1 matthew 405: #
406: # Print out summary/export row
407: $r->print('<tr><td>Export</td><td>0</td>'.
1.14 matthew 408: $self->html_export_row($exportcolor)."</tr>\n");
1.1 matthew 409: #
410: # Prepare to output rows
411: $tableheader =<<"END";
412: <table border="2">
413: <tr><th>row</th><th>Item</th>
414: END
415: foreach (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz')){
416: if ($label_num<$num_uneditable) {
1.14 matthew 417: $tableheader.='<th bgcolor="'.$importcolor.'">';
1.1 matthew 418: } else {
419: $tableheader.='<th>';
420: }
421: $tableheader.="<b><font size=+1>$_</font></b></th>";
422: }
423: #
424: my $num_output = 0;
1.8 matthew 425: foreach my $rownum (sort {$a <=> $b} ($self->rows())) {
1.1 matthew 426: if ($num_output++ % 50 == 0) {
427: $r->print("</table>\n".$tableheader);
428: }
429: $r->print('<tr><td>'.$rownum.'</td>'.
1.14 matthew 430: $self->assess_html_row($rownum,$importcolor)."</tr>\n");
1.1 matthew 431: }
432: $r->print("</table>\n");
433: return;
434: }
435:
436: sub assess_html_row {
437: my $self = shift();
1.14 matthew 438: my ($row,$importcolor) = @_;
1.1 matthew 439: my $parameter_name = $self->{'formulas'}->{'A'.$row};
440: my @rowdata = $self->get_row($row);
441: my $num_cols_output = 0;
442: my $row_html;
443: if (exists($nice_parameter_name{$parameter_name})) {
444: my $name = $nice_parameter_name{$parameter_name};
445: $name =~ s/ /\ /g;
446: $row_html .= '<td>'.$name.'<br />'.$parameter_name.'</td>';
447: } else {
448: $row_html .= '<td>'.$parameter_name.'</td>';
449: }
450: foreach my $cell (@rowdata) {
1.10 matthew 451: if ($num_cols_output < 1) {
1.14 matthew 452: $row_html .= '<td bgcolor="'.$importcolor.'">';
1.10 matthew 453: $row_html .= &Apache::Spreadsheet::html_uneditable_cell($cell,
454: '#FFDDDD');
455: } else {
456: $row_html .= '<td bgcolor="#EOFFDD">';
457: $row_html .= &Apache::Spreadsheet::html_editable_cell($cell,
458: '#E0FFDD',1);
459: }
1.1 matthew 460: $row_html .= '</td>';
1.10 matthew 461: $num_cols_output++;
1.1 matthew 462: }
463: return $row_html;
464: }
465:
1.9 matthew 466: sub csv_rows {
467: # writes the meat of the spreadsheet to an excel worksheet. Called
468: # by Spreadsheet::outsheet_excel;
1.1 matthew 469: my $self = shift;
1.9 matthew 470: my ($filehandle) = @_;
471: #
472: # Write a header row
473: $self->csv_output_row($filehandle,undef,
474: ('Parameter','Description','Value'));
475: #
476: # Write each row
477: foreach my $rownum (sort {$a <=> $b} ($self->rows())) {
478: my $parameter_name = $self->{'formulas'}->{'A'.$rownum};
479: my $description = '';
480: if (exists($nice_parameter_name{$parameter_name})) {
481: $description = $nice_parameter_name{$parameter_name};
482: }
483: $self->csv_output_row($filehandle,$rownum,
484: $parameter_name,$description);
485: }
486: return;
1.1 matthew 487: }
488:
1.8 matthew 489: sub excel_rows {
490: # writes the meat of the spreadsheet to an excel worksheet. Called
491: # by Spreadsheet::outsheet_excel;
1.1 matthew 492: my $self = shift;
1.8 matthew 493: my ($worksheet,$cols_output,$rows_output) = @_;
494: #
495: # Write a header row
496: $cols_output = 0;
497: foreach my $value ('Parameter','Description','Value') {
498: $worksheet->write($rows_output,$cols_output++,$value);
499: }
500: $rows_output++;
501: #
502: # Write each row
503: foreach my $rownum (sort {$a <=> $b} ($self->rows())) {
504: my $parameter_name = $self->{'formulas'}->{'A'.$rownum};
505: my $description = '';
506: if (exists($nice_parameter_name{$parameter_name})) {
507: $description = $nice_parameter_name{$parameter_name};
508: }
509: $self->excel_output_row($worksheet,$rownum,$rows_output++,
510: $parameter_name,$description);
511: }
512: return;
1.1 matthew 513: }
514:
515: sub compute {
516: my $self = shift;
1.13 matthew 517: # $self->logthis('computing');
1.1 matthew 518: $self->initialize_safe_space();
1.11 matthew 519: #########################################
520: #########################################
521: ### ###
522: ### Retrieve the problem parameters ###
523: ### ###
524: #########################################
525: #########################################
526: my @Mandatory_parameters = ("stores_0_solved",
527: "stores_0_awarddetail",
528: "stores_0_awarded",
529: "timestamp",
530: "stores_0_tries",
531: "stores_0_award");
1.1 matthew 532: #
533: # Definitions
534: undef(%nice_parameter_name);
535: my %parameters; # holds underscored parameters by name
536: #
537: # Get the metadata fields and determine their proper names
538: my ($symap,$syid,$srcf)=split(/___/,$self->{'symb'});
539: my @Metadata = split(/\,/,&Apache::lonnet::metadata($srcf,'keys'));
1.11 matthew 540: foreach my $parm (@Mandatory_parameters,@Metadata) {
1.1 matthew 541: next if ($parm !~ /^(resource\.|stores|parameter)_/);
542: my $cleaned_name = $parm;
543: $cleaned_name =~ s/^resource\./stores_/;
544: $cleaned_name =~ s/\./_/g;
545: my $display = &Apache::lonnet::metadata($srcf,
546: $cleaned_name.'.display');
547: if (! $display) {
548: $display .= &Apache::lonnet::metadata($srcf,$cleaned_name.'.name');
549: }
550: $parameters{$cleaned_name}++;
551: $nice_parameter_name{$cleaned_name} = $display;
552: }
553: #
554: # Get the values of the metadata fields
555: $self->ensure_current_parameter_caches();
556: my $filename = $self->{'coursefilename'}.'_parms.db';
557: if (tie(%parmhash,'GDBM_File',
558: $self->{'coursefilename'}.'_parms.db',&GDBM_READER(),0640)) {
559: foreach my $parmname (keys(%parameters)) {
1.3 matthew 560: my $value = $self->parmval($parmname);
1.1 matthew 561: $parameters{$parmname} =$value;
562: }
563: untie(%parmhash);
564: } else {
565: $self->logthis('unable to tie '.$filename);
566: }
567: #
568: # Clean out unnecessary parameters
569: foreach (keys(%parameters)) {
570: delete($parameters{$_}) if (! /(resource\.|stores_|parameter_)/);
571: }
572: #
573: # Get the students performance data
574: my %student_parameters =
575: &Apache::loncoursedata::get_current_state($self->{'name'},
576: $self->{'domain'},
577: $self->{'symb'},
578: $self->{'cid'});
579: while (my ($parm,$value) = each(%student_parameters)) {
580: $parm =~ s/^resource\./stores_/;
581: $parm =~ s/\./_/g;
582: $parameters{$parm} = $value;
583: }
584: #
585: # Set up the formulas and parameter values
586: my %f=$self->formulas();
587: my %c;
588: #
1.5 matthew 589: # Check for blackout requirements
590: if ((!exists($ENV{'request.role.adv'}) || !$ENV{'request.role.adv'})) {
591: while (my ($parm,$value) = each(%parameters)) {
592: last if ($self->blackout());
593: next if ($parm !~ /^(parameter_.*)_problemstatus$/);
594: next if ($parameters{$1.'_answerdate'}<time);
595: if (lc($value) eq 'no') {
596: # We must blackout this sheet
597: $self->blackout(1);
598: }
599: }
600: }
601: #
602: # Move the parameters into the spreadsheet
1.1 matthew 603: while (my ($parm,$value) = each(%parameters)) {
604: my $cell = 'A'.$self->get_row_number_from_key($parm);
605: $f{$cell} = $parm;
1.6 matthew 606: $value = '"'.$value.'"' if ($value =~/[^0-9.]/);
607: $c{$parm} = $value;
1.1 matthew 608: }
1.6 matthew 609: $self->formulas(\%f);
610: $self->constants(\%c);
1.1 matthew 611: $self->calcsheet();
612: #
613: # Store export row in cache
614: my @exportarray = $self->exportrow();
615: $Exportrows{$self->{'symb'}}->{'time'} = time;
616: $Exportrows{$self->{'symb'}}->{$self->{'filename'}} = \@exportarray;
617: #
618: # Save the export data
619: $self->save_export_data();
1.12 matthew 620: $self->save() if ($self->need_to_save());
1.1 matthew 621: return;
622: }
623:
624: ##
625: ## sett overrides Spreadsheet::sett
626: ##
627: sub sett {
628: my $self = shift;
629: my %t=();
630: #
631: # Deal with the template row by copying the template formulas into each
632: # row.
633: foreach my $col ($self->template_cells()) {
634: next if ($col=~/^A/);
635: foreach my $row ($self->rows()) {
636: # Get the name of this cell
637: my $cell=$col.$row;
638: # Grab the template declaration
639: $t{$cell}=$self->formula('template_'.$col);
640: # Replace '#' with the row number
641: $t{$cell}=~s/\#/$row/g;
642: # Replace '....' with ','
643: $t{$cell}=~s/\.\.+/\,/g;
644: # Replace 'A0' with the value from 'A0'
645: $t{$cell}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
646: # Replace parameters
647: $t{$cell}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
648: }
649: }
650: #
651: # Deal with the cells which have formulas
652: while (my ($cell,$formula) = each(%{$self->{'formulas'}})) {
653: next if ($cell =~ /template_/);
654: if ($cell =~ /^A/ && $cell ne 'A0') {
655: if ($formula !~ /^\!/) {
656: $t{$cell}=$self->{'constants'}->{$formula};
657: }
658: } else {
659: $t{$cell}=$formula;
660: $t{$cell}=~s/\.\.+/\,/g;
661: $t{$cell}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
662: $t{$cell}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
663: }
664: }
665: # Put %t into the safe space
666: %{$self->{'safe'}->varglob('t')}=%t;
667: }
668:
669:
670: ########################################################
671: ########################################################
672:
673: =pod
674:
675: =item &load_cached_export_rows()
676:
677: Retrieves and parsers the export rows of the assessment spreadsheets.
678: These rows are saved in the students directory in the format:
679:
680: sname:sdom:assesscalc:symb.time => time
681:
682: sname:sdom:assesscalc:symb => filename___=___Adata___;___Bdata___;___ ...
683:
684: =cut
685:
686: ########################################################
687: ########################################################
688: sub load_cached_export_rows {
689: %Exportrows = undef;
690: my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets_'.
691: $ENV{'request.course.id'},
692: $current_domain,$current_name,undef);
693: if ($tmp[0]!~/^error/) {
694: my %tmp = @tmp;
695: my $default_filename = $ENV{'course.'.$ENV{'request.course.id'}.
696: '.spreadsheet_default_assesscalc'};
697: # We only got one key, so we will access it directly.
698: while (my ($key,$sheetdata) = each(%tmp)) {
699: my ($sname,$sdom,$sheettype,$symb) = split(':',$key);
700: if ($symb =~ /\.time$/) {
701: $symb =~ s/\.time$//;
702: $Exportrows{$symb}->{'time'} = $sheetdata;
703: } else {
704: $sheetdata =~ s/^(.*)___=___//;
705: my $filename = $1;
706: $filename = $default_filename if (! defined($filename));
707: my @Data = split('___;___',$sheetdata);
708: $Exportrows{$symb}->{$filename} = \@Data;
709: }
710: }
711: }
712: }
713:
714: #############################################
715: #############################################
716:
717: =pod
718:
719: =item &export_data
720:
721: Returns the export data associated with the spreadsheet. Computes the
722: spreadsheet only if necessary.
723:
724: =cut
725:
726: #############################################
727: #############################################
728: sub export_data {
729: my $self = shift;
730: my $symb = $self->{'symb'};
1.5 matthew 731: if (! exists($ENV{'request.role.adv'}) || ! $ENV{'request.role.adv'} ||
732: ! exists($Exportrows{$symb}) || ! defined($Exportrows{$symb}) ||
1.1 matthew 733: ! $self->check_expiration_time($Exportrows{$symb}->{'time'}) ||
734: ! exists($Exportrows{$symb}->{$self->{'filename'}}) ||
735: ! defined($Exportrows{$symb}->{$self->{'filename'}})) {
736: $self->compute();
737: }
738: my @Data = @{$Exportrows{$symb}->{$self->{'filename'}}};
739: if ($Data[0] =~ /^(.*)___=___/) {
740: $self->{'sheetname'} = $1;
741: $Data[0] =~ s/^(.*)___=___//;
742: }
743: for (my $i=0;$i<$#Data;$i++) {
744: $Data[$i]="'".$Data[$i]."'" if ($Data[$i]=~/\D/ && defined($Data[$i]));
745: }
746: return @Data;
747: }
748:
749: #############################################
750: #############################################
751:
752: =pod
753:
754: =item &save_export_data()
755:
756: Writes the export data for this spreadsheet to the students cache.
757:
758: =cut
759:
760: #############################################
761: #############################################
762: sub save_export_data {
763: my $self = shift;
1.7 matthew 764: return if ($self->temporary());
1.1 matthew 765: my $student = $self->{'name'}.':'.$self->{'domain'};
766: my $symb = $self->{'symb'};
767: if (! exists($Exportrows{$symb}) ||
768: ! exists($Exportrows{$symb}->{$self->{'filename'}})) {
769: return;
770: }
771: my $key = join(':',($self->{'name'},$self->{'domain'},'assesscalc',$symb));
772: my $timekey = $key.'.time';
773: my $newstore= join('___;___',@{$Exportrows{$symb}->{$self->{'filename'}}});
774: $newstore = $self->{'filename'}.'___=___'.$newstore;
775: my $result = &Apache::lonnet::put
776: ('nohist_calculatedsheets_'.$ENV{'request.course.id'},
777: { $key => $newstore,
778: $timekey => $Exportrows{$symb}->{'time'} },
779: $self->{'domain'},
780: $self->{'name'});
781:
782: return;
783: }
784:
785: 1;
786:
787: __END__
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