File:
[LON-CAPA] /
loncom /
interface /
loncoursedata.pm
Revision
1.30:
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Tue Sep 3 12:27:05 2002 UTC (21 years, 9 months ago) by
stredwic
Branches:
MAIN
CVS tags:
version_0_5_1,
HEAD
Incorrect parameters for CheckForResidualDownload. This explains a couple
of oddities when using the stop button, which is why the status display
didn't always show up. When that occurred, it was probably just skipping
the already downloaded data, but would just be downloaded again in the
next step so no data was missed.
1: # The LearningOnline Network with CAPA
2: # (Publication Handler
3: #
4: # $Id: loncoursedata.pm,v 1.30 2002/09/03 12:27:05 stredwic Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: loncoursedata
35:
36: =head1 SYNOPSIS
37:
38: Set of functions that download and process student and course information.
39:
40: =head1 PACKAGES USED
41:
42: Apache::Constants qw(:common :http)
43: Apache::lonnet()
44: Apache::lonhtmlcommon
45: HTML::TokeParser
46: GDBM_File
47:
48: =cut
49:
50: package Apache::loncoursedata;
51:
52: use strict;
53: use Apache::Constants qw(:common :http);
54: use Apache::lonnet();
55: use Apache::lonhtmlcommon;
56: use HTML::TokeParser;
57: use GDBM_File;
58:
59: =pod
60:
61: =head1 DOWNLOAD INFORMATION
62:
63: This section contains all the functions that get data from other servers
64: and/or itself.
65:
66: =cut
67:
68: # ----- DOWNLOAD INFORMATION -------------------------------------------
69:
70: =pod
71:
72: =item &DownloadClasslist()
73:
74: Collects lastname, generation, middlename, firstname, PID, and section for each
75: student from their environment database. The section data is also download, though
76: it is in a rough format, and is processed later. The list of students is built from
77: collecting a classlist for the course that is to be displayed. Once the classlist
78: has been downloaded, its date stamp is recorded. Unless the datestamp for the
79: class database is reset or is modified, this data will not be downloaded again.
80: Also, there was talk about putting the fullname and section
81: and perhaps other pieces of data into the classlist file. This would
82: reduce the number of different file accesses and reduce the amount of
83: processing on this side.
84:
85: =over 4
86:
87: Input: $courseID, $lastDownloadTime, $c
88:
89: $courseID: The id of the course
90:
91: $lastDownloadTime: This is the date stamp for when this information was
92: last gathered. If it is set to Not downloaded, it will gather the data
93: again, though it currently does not remove the old data.
94:
95: $c: The connection class that can determine if the browser has aborted. It
96: is used to short circuit this function so that it does not continue to
97: get information when there is no need.
98:
99: Output: \%classlist
100:
101: \%classlist: A pointer to a hash containing the following data:
102:
103: -A list of student name:domain (as keys) (known below as $name)
104:
105: -A hash pointer for each student containing lastname, generation, firstname,
106: middlename, and PID : Key is $name.studentInformation
107:
108: -A hash pointer to each students section data : Key is $name.section
109:
110: -If there was an error in dump, it will be returned in the hash. See
111: the error codes for dump in lonnet. Also, an error key will be
112: generated if an abort occurs.
113:
114: =back
115:
116: =cut
117:
118: sub DownloadClasslist {
119: my ($courseID, $lastDownloadTime, $c)=@_;
120: my ($courseDomain,$courseNumber)=split(/\_/,$courseID);
121: my %classlist;
122:
123: my $modifiedTime = &Apache::lonnet::GetFileTimestamp($courseDomain, $courseNumber,
124: 'classlist.db',
125: $Apache::lonnet::perlvar{'lonUsersDir'});
126:
127: # Always download the information if lastDownloadTime is set to
128: # Not downloaded, otherwise it is only downloaded if the file
129: # has been updated and has a more recent date stamp
130: if($lastDownloadTime ne 'Not downloaded' &&
131: $lastDownloadTime >= $modifiedTime && $modifiedTime >= 0) {
132: # Data is not gathered so return UpToDate as true. This
133: # will be interpreted in ProcessClasslist
134: $classlist{'lastDownloadTime'}=time;
135: $classlist{'UpToDate'} = 'true';
136: return \%classlist;
137: }
138:
139: %classlist=&Apache::lonnet::dump('classlist',$courseDomain, $courseNumber);
140: foreach(keys (%classlist)) {
141: if(/^(con_lost|error|no_such_host)/i) {
142: return \%classlist;
143: }
144: }
145:
146: foreach my $name (keys(%classlist)) {
147: if(defined($c) && ($c->aborted())) {
148: $classlist{'error'}='aborted';
149: return \%classlist;
150: }
151:
152: my ($studentName,$studentDomain) = split(/\:/,$name);
153: # Download student environment data, specifically the full name and id.
154: my %studentInformation=&Apache::lonnet::get('environment',
155: ['lastname','generation',
156: 'firstname','middlename',
157: 'id'],
158: $studentDomain,
159: $studentName);
160: $classlist{$name.':studentInformation'}=\%studentInformation;
161:
162: if($c->aborted()) {
163: $classlist{'error'}='aborted';
164: return \%classlist;
165: }
166:
167: #Section
168: my %section=&Apache::lonnet::dump('roles',$studentDomain,$studentName);
169: $classlist{$name.':sections'}=\%section;
170: }
171:
172: $classlist{'UpToDate'} = 'false';
173: $classlist{'lastDownloadTime'}=time;
174:
175: return \%classlist;
176: }
177:
178: =pod
179:
180: =item &DownloadCourseInformation()
181:
182: Dump of all the course information for a single student. The data can be
183: pruned by making use of dumps regular expression arguement. This function
184: also takes a regular expression which it passes straight through to dump.
185: The data is no escaped, because it is done elsewhere. It also
186: checks the timestamp of the students course database file and only downloads
187: if it has been modified since the last download.
188:
189: =over 4
190:
191: Input: $namedata, $courseID, $lastDownloadTime, $WhatIWant
192:
193: $namedata: student name:domain
194:
195: $courseID: The id of the course
196:
197: $lastDownloadTime: This is the date stamp for when this information was
198: last gathered. If it is set to Not downloaded, it will gather the data
199: again, though it currently does not remove the old data.
200:
201: $WhatIWant: Regular expression used to get selected data with dump
202:
203: Output: \%courseData
204:
205: \%courseData: A hash pointer to the raw data from the students course
206: database.
207:
208: =back
209:
210: =cut
211:
212: sub DownloadCourseInformation {
213: my ($namedata,$courseID,$lastDownloadTime,$WhatIWant)=@_;
214: my %courseData;
215: my ($name,$domain) = split(/\:/,$namedata);
216:
217: my $modifiedTime = &Apache::lonnet::GetFileTimestamp($domain, $name,
218: $courseID.'.db',
219: $Apache::lonnet::perlvar{'lonUsersDir'});
220:
221: if($lastDownloadTime >= $modifiedTime && $modifiedTime >= 0) {
222: # Data is not gathered so return UpToDate as true. This
223: # will be interpreted in ProcessClasslist
224: $courseData{$namedata.':lastDownloadTime'}=time;
225: $courseData{$namedata.':UpToDate'} = 'true';
226: return \%courseData;
227: }
228:
229: # Download course data
230: if(!defined($WhatIWant)) {
231: # set the regular expression to everything by setting it to period
232: $WhatIWant = '.';
233: }
234: %courseData=&Apache::lonnet::dump($courseID, $domain, $name, $WhatIWant);
235: $courseData{'UpToDate'} = 'false';
236: $courseData{'lastDownloadTime'}=time;
237:
238: my %newData;
239: foreach (keys(%courseData)) {
240: # need to have the keys to be prepended with the name:domain of the
241: # student to reduce data collision later.
242: $newData{$namedata.':'.$_} = $courseData{$_};
243: }
244:
245: return \%newData;
246: }
247:
248: # ----- END DOWNLOAD INFORMATION ---------------------------------------
249:
250: =pod
251:
252: =head1 PROCESSING FUNCTIONS
253:
254: These functions process all the data for all the students. Also, they
255: are the functions that access the cache database for writing the majority of
256: the time. The downloading and caching were separated to reduce problems
257: with stopping downloading then can not tie hash to database later.
258:
259: =cut
260:
261: # ----- PROCESSING FUNCTIONS ---------------------------------------
262:
263: =pod
264:
265: =item &ProcessTopResourceMap()
266:
267: Trace through the "big hash" created in rat/lonuserstate.pm::loadmap.
268: Basically, this function organizes a subset of the data and stores it in
269: cached data. The data stored is the problems, sequences, sequence titles,
270: parts of problems, and their ordering. Column width information is also
271: partially handled here on a per sequence basis.
272:
273: =over 4
274:
275: Input: $cache, $c
276:
277: $cache: A pointer to a hash to store the information
278:
279: $c: The connection class used to determine if an abort has been sent to the
280: browser
281:
282: Output: A string that contains an error message or "OK" if everything went
283: smoothly.
284:
285: =back
286:
287: =cut
288:
289: sub ProcessTopResourceMap {
290: my ($cache,$c)=@_;
291: my %hash;
292: my $fn=$ENV{'request.course.fn'};
293: if(-e "$fn.db") {
294: my $tieTries=0;
295: while($tieTries < 3) {
296: if($c->aborted()) {
297: return;
298: }
299: if(tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) {
300: last;
301: }
302: $tieTries++;
303: sleep 1;
304: }
305: if($tieTries >= 3) {
306: return 'Coursemap undefined.';
307: }
308: } else {
309: return 'Can not open Coursemap.';
310: }
311:
312: my $oldkeys;
313: if(defined($cache->{'ResourceKeys'})) {
314: $oldkeys = $cache->{'ResourceKeys'};
315: foreach (split(':::', $cache->{'ResourceKeys'})) {
316: delete $cache->{$_};
317: }
318: delete $cache->{'ResourceKeys'};
319: }
320:
321: # Initialize state machine. Set information pointing to top level map.
322: my (@sequences, @currentResource, @finishResource);
323: my ($currentSequence, $currentResourceID, $lastResourceID);
324:
325: $currentResourceID=$hash{'ids_/res/'.$ENV{'request.course.uri'}};
326: push(@currentResource, $currentResourceID);
327: $lastResourceID=-1;
328: $currentSequence=-1;
329: my $topLevelSequenceNumber = $currentSequence;
330:
331: my %sequenceRecord;
332: my %allkeys;
333: while(1) {
334: if($c->aborted()) {
335: last;
336: }
337: # HANDLE NEW SEQUENCE!
338: #if page || sequence
339: if(defined($hash{'map_pc_'.$hash{'src_'.$currentResourceID}}) &&
340: !defined($sequenceRecord{$currentResourceID})) {
341: $sequenceRecord{$currentResourceID}++;
342: push(@sequences, $currentSequence);
343: push(@currentResource, $currentResourceID);
344: push(@finishResource, $lastResourceID);
345:
346: $currentSequence=$hash{'map_pc_'.$hash{'src_'.$currentResourceID}};
347:
348: # Mark sequence as containing problems. If it doesn't, then
349: # it will be removed when processing for this sequence is
350: # complete. This allows the problems in a sequence
351: # to be outputed before problems in the subsequences
352: if(!defined($cache->{'orderedSequences'})) {
353: $cache->{'orderedSequences'}=$currentSequence;
354: } else {
355: $cache->{'orderedSequences'}.=':'.$currentSequence;
356: }
357: $allkeys{'orderedSequences'}++;
358:
359: $lastResourceID=$hash{'map_finish_'.
360: $hash{'src_'.$currentResourceID}};
361: $currentResourceID=$hash{'map_start_'.
362: $hash{'src_'.$currentResourceID}};
363:
364: if(!($currentResourceID) || !($lastResourceID)) {
365: $currentSequence=pop(@sequences);
366: $currentResourceID=pop(@currentResource);
367: $lastResourceID=pop(@finishResource);
368: if($currentSequence eq $topLevelSequenceNumber) {
369: last;
370: }
371: }
372: next;
373: }
374:
375: # Handle gradable resources: exams, problems, etc
376: $currentResourceID=~/(\d+)\.(\d+)/;
377: my $partA=$1;
378: my $partB=$2;
379: if($hash{'src_'.$currentResourceID}=~
380: /\.(problem|exam|quiz|assess|survey|form)$/ &&
381: $partA eq $currentSequence &&
382: !defined($sequenceRecord{$currentSequence.':'.
383: $currentResourceID})) {
384: $sequenceRecord{$currentSequence.':'.$currentResourceID}++;
385: my $Problem = &Apache::lonnet::symbclean(
386: &Apache::lonnet::declutter($hash{'map_id_'.$partA}).
387: '___'.$partB.'___'.
388: &Apache::lonnet::declutter($hash{'src_'.
389: $currentResourceID}));
390:
391: $cache->{$currentResourceID.':problem'}=$Problem;
392: $allkeys{$currentResourceID.':problem'}++;
393: if(!defined($cache->{$currentSequence.':problems'})) {
394: $cache->{$currentSequence.':problems'}=$currentResourceID;
395: } else {
396: $cache->{$currentSequence.':problems'}.=
397: ':'.$currentResourceID;
398: }
399: $allkeys{$currentSequence.':problems'}++;
400:
401: my $meta=$hash{'src_'.$currentResourceID};
402: # $cache->{$currentResourceID.':title'}=
403: # &Apache::lonnet::metdata($meta,'title');
404: $cache->{$currentResourceID.':title'}=
405: $hash{'title_'.$currentResourceID};
406: $allkeys{$currentResourceID.':title'}++;
407: $cache->{$currentResourceID.':source'}=
408: $hash{'src_'.$currentResourceID};
409: $allkeys{$currentResourceID.':source'}++;
410:
411: # Get Parts for problem
412: my %beenHere;
413: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
414: if(/^\w+response_\d+.*/) {
415: my (undef, $partId, $responseId) = split(/_/,$_);
416: if($beenHere{'p:'.$partId} == 0) {
417: $beenHere{'p:'.$partId}++;
418: if(!defined($cache->{$currentSequence.':'.
419: $currentResourceID.':parts'})) {
420: $cache->{$currentSequence.':'.$currentResourceID.
421: ':parts'}=$partId;
422: } else {
423: $cache->{$currentSequence.':'.$currentResourceID.
424: ':parts'}.=':'.$partId;
425: }
426: $allkeys{$currentSequence.':'.$currentResourceID.
427: ':parts'}++;
428: }
429: if($beenHere{'r:'.$partId.':'.$responseId} == 0) {
430: $beenHere{'r:'.$partId.':'.$responseId}++;
431: if(!defined($cache->{$currentSequence.':'.
432: $currentResourceID.':'.$partId.
433: ':responseIDs'})) {
434: $cache->{$currentSequence.':'.$currentResourceID.
435: ':'.$partId.':responseIDs'}=$responseId;
436: } else {
437: $cache->{$currentSequence.':'.$currentResourceID.
438: ':'.$partId.':responseIDs'}.=':'.
439: $responseId;
440: }
441: $allkeys{$currentSequence.':'.$currentResourceID.':'.
442: $partId.':responseIDs'}++;
443: }
444: if(/^optionresponse/ &&
445: $beenHere{'o:'.$partId.':'.$currentResourceID} == 0) {
446: $beenHere{'o:'.$partId.$currentResourceID}++;
447: if(defined($cache->{'OptionResponses'})) {
448: $cache->{'OptionResponses'}.= ':::'.
449: $currentSequence.':'.$currentResourceID.':'.
450: $partId.':'.$responseId;
451: } else {
452: $cache->{'OptionResponses'}= $currentSequence.':'.
453: $currentResourceID.':'.
454: $partId.':'.$responseId;
455: }
456: $allkeys{'OptionResponses'}++;
457: }
458: }
459: }
460: }
461:
462: # if resource == finish resource, then it is the end of a sequence/page
463: if($currentResourceID eq $lastResourceID) {
464: # pop off last resource of sequence
465: $currentResourceID=pop(@currentResource);
466: $lastResourceID=pop(@finishResource);
467:
468: if(defined($cache->{$currentSequence.':problems'})) {
469: # Capture sequence information here
470: $cache->{$currentSequence.':title'}=
471: $hash{'title_'.$currentResourceID};
472: $allkeys{$currentSequence.':title'}++;
473: $cache->{$currentSequence.':source'}=
474: $hash{'src_'.$currentResourceID};
475: $allkeys{$currentSequence.':source'}++;
476:
477: my $totalProblems=0;
478: foreach my $currentProblem (split(/\:/,
479: $cache->{$currentSequence.
480: ':problems'})) {
481: foreach (split(/\:/,$cache->{$currentSequence.':'.
482: $currentProblem.
483: ':parts'})) {
484: $totalProblems++;
485: }
486: }
487: my @titleLength=split(//,$cache->{$currentSequence.
488: ':title'});
489: # $extra is 3 for problems correct and 3 for space
490: # between problems correct and problem output
491: my $extra = 6;
492: if(($totalProblems + $extra) > (scalar @titleLength)) {
493: $cache->{$currentSequence.':columnWidth'}=
494: $totalProblems + $extra;
495: } else {
496: $cache->{$currentSequence.':columnWidth'}=
497: (scalar @titleLength);
498: }
499: $allkeys{$currentSequence.':columnWidth'}++;
500: } else {
501: # Remove sequence from list, if it contains no problems to
502: # display.
503: $cache->{'orderedSequences'}=~s/$currentSequence//;
504: $cache->{'orderedSequences'}=~s/::/:/g;
505: $cache->{'orderedSequences'}=~s/^:|:$//g;
506: }
507:
508: $currentSequence=pop(@sequences);
509: if($currentSequence eq $topLevelSequenceNumber) {
510: last;
511: }
512: }
513:
514: # MOVE!!!
515: # move to next resource
516: unless(defined($hash{'to_'.$currentResourceID})) {
517: # big problem, need to handle. Next is probably wrong
518: my $errorMessage = 'Big problem in ';
519: $errorMessage .= 'loncoursedata::ProcessTopLevelMap.';
520: $errorMessage .= ' bighash to_$currentResourceID not defined!';
521: &Apache::lonnet::logthis($errorMessage);
522: last;
523: }
524: my @nextResources=();
525: foreach (split(/\,/,$hash{'to_'.$currentResourceID})) {
526: if(!defined($sequenceRecord{$currentSequence.':'.
527: $hash{'goesto_'.$_}})) {
528: push(@nextResources, $hash{'goesto_'.$_});
529: }
530: }
531: push(@currentResource, @nextResources);
532: # Set the next resource to be processed
533: $currentResourceID=pop(@currentResource);
534: }
535:
536: my @theKeys = keys(%allkeys);
537: my $newkeys = join(':::', @theKeys);
538: $cache->{'ResourceKeys'} = join(':::', $newkeys);
539: if($newkeys ne $oldkeys) {
540: $cache->{'ResourceUpdated'} = 'true';
541: } else {
542: $cache->{'ResourceUpdated'} = 'false';
543: }
544:
545: unless (untie(%hash)) {
546: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
547: "Could not untie coursemap $fn (browse)".
548: ".</font>");
549: }
550:
551: return 'OK';
552: }
553:
554: =pod
555:
556: =item &ProcessClasslist()
557:
558: Taking the class list dumped from &DownloadClasslist(), all the
559: students and their non-class information is processed using the
560: &ProcessStudentInformation() function. A date stamp is also recorded for
561: when the data was processed.
562:
563: Takes data downloaded for a student and breaks it up into managable pieces and
564: stored in cache data. The username, domain, class related date, PID,
565: full name, and section are all processed here.
566:
567: =over 4
568:
569: Input: $cache, $classlist, $courseID, $ChartDB, $c
570:
571: $cache: A hash pointer to store the data
572:
573: $classlist: The hash of data collected about a student from
574: &DownloadClasslist(). The hash contains a list of students, a pointer
575: to a hash of student information for each student, and each students section
576: number.
577:
578: $courseID: The course ID
579:
580: $ChartDB: The name of the cache database file.
581:
582: $c: The connection class used to determine if an abort has been sent to the
583: browser
584:
585: Output: @names
586:
587: @names: An array of students whose information has been processed, and are to
588: be considered in an arbitrary order.
589:
590: =back
591:
592: =cut
593:
594: sub ProcessClasslist {
595: my ($cache,$classlist,$courseID,$c)=@_;
596: my @names=();
597:
598: $cache->{'ClasslistTimeStamp'}=$classlist->{'lastDownloadTime'};
599: if($classlist->{'UpToDate'} eq 'true') {
600: return split(/:::/,$cache->{'NamesOfStudents'});;
601: }
602:
603: foreach my $name (keys(%$classlist)) {
604: if($name =~ /\:section/ || $name =~ /\:studentInformation/ ||
605: $name eq '' || $name eq 'UpToDate' || $name eq 'lastDownloadTime') {
606: next;
607: }
608: if($c->aborted()) {
609: return ();
610: }
611: my $studentInformation = $classlist->{$name.':studentInformation'},
612: my $sectionData = $classlist->{$name.':sections'},
613: my $date = $classlist->{$name},
614: my ($studentName,$studentDomain) = split(/\:/,$name);
615:
616: $cache->{$name.':username'}=$studentName;
617: $cache->{$name.':domain'}=$studentDomain;
618: # Initialize timestamp for student
619: if(!defined($cache->{$name.':lastDownloadTime'})) {
620: $cache->{$name.':lastDownloadTime'}='Not downloaded';
621: $cache->{$name.':updateTime'}=' Not updated';
622: }
623:
624: my $error = 0;
625: foreach(keys(%$studentInformation)) {
626: if(/^(con_lost|error|no_such_host)/i) {
627: $cache->{$name.':error'}=
628: 'Could not download student environment data.';
629: $cache->{$name.':fullname'}='';
630: $cache->{$name.':id'}='';
631: $error = 1;
632: }
633: }
634: next if($error);
635: push(@names,$name);
636: $cache->{$name.':fullname'}=&ProcessFullName(
637: $studentInformation->{'lastname'},
638: $studentInformation->{'generation'},
639: $studentInformation->{'firstname'},
640: $studentInformation->{'middlename'});
641: $cache->{$name.':id'}=$studentInformation->{'id'};
642:
643: my ($end, $start)=split(':',$date);
644: $courseID=~s/\_/\//g;
645: $courseID=~s/^(\w)/\/$1/;
646:
647: my $sec='';
648: foreach my $key (keys (%$sectionData)) {
649: my $value = $sectionData->{$key};
650: if ($key=~/^$courseID(?:\/)*(\w+)*\_st$/) {
651: my $tempsection=$1;
652: if($key eq $courseID.'_st') {
653: $tempsection='';
654: }
655: my ($dummy,$roleend,$rolestart)=split(/\_/,$value);
656: if($roleend eq $end && $rolestart eq $start) {
657: $sec = $tempsection;
658: last;
659: }
660: }
661: }
662:
663: my $status='Expired';
664: if(((!$end) || time < $end) && ((!$start) || (time > $start))) {
665: $status='Active';
666: }
667: $cache->{$name.':Status'}=$status;
668: $cache->{$name.':section'}=$sec;
669:
670: if($sec eq '' || !defined($sec) || $sec eq ' ') {
671: $sec = 'none';
672: }
673: if(defined($cache->{'sectionList'})) {
674: if($cache->{'sectionList'} !~ /(^$sec:|^$sec$|:$sec$|:$sec:)/) {
675: $cache->{'sectionList'} .= ':'.$sec;
676: }
677: } else {
678: $cache->{'sectionList'} = $sec;
679: }
680: }
681:
682: $cache->{'ClasslistTimestamp'}=time;
683: $cache->{'NamesOfStudents'}=join(':::',@names);
684:
685: return @names;
686: }
687:
688: =pod
689:
690: =item &ProcessStudentData()
691:
692: Takes the course data downloaded for a student in
693: &DownloadCourseInformation() and breaks it up into key value pairs
694: to be stored in the cached data. The keys are comprised of the
695: $username:$domain:$keyFromCourseDatabase. The student username:domain is
696: stored away signifying that the students information has been downloaded and
697: can be reused from cached data.
698:
699: =over 4
700:
701: Input: $cache, $courseData, $name
702:
703: $cache: A hash pointer to store data
704:
705: $courseData: A hash pointer that points to the course data downloaded for a
706: student.
707:
708: $name: username:domain
709:
710: Output: None
711:
712: *NOTE: There is no output, but an error message is stored away in the cache
713: data. This is checked in &FormatStudentData(). The key username:domain:error
714: will only exist if an error occured. The error is an error from
715: &DownloadCourseInformation().
716:
717: =back
718:
719: =cut
720:
721: sub ProcessStudentData {
722: my ($cache,$courseData,$name)=@_;
723:
724: if(!&CheckDateStampError($courseData, $cache, $name)) {
725: return;
726: }
727:
728: # This little delete thing, should not be here. Move some other
729: # time though.
730: if(defined($cache->{$name.':keys'})) {
731: foreach (split(':::', $cache->{$name.':keys'})) {
732: delete $cache->{$name.':'.$_};
733: }
734: delete $cache->{$name.':keys'};
735: }
736:
737: my %courseKeys;
738: # user name:domain was prepended earlier in DownloadCourseInformation
739: foreach (keys %$courseData) {
740: my $currentKey = $_;
741: $currentKey =~ s/^$name//;
742: $courseKeys{$currentKey}++;
743: $cache->{$_}=$courseData->{$_};
744: }
745:
746: $cache->{$name.':keys'} = join(':::', keys(%courseKeys));
747:
748: return;
749: }
750:
751: =pod
752:
753: =item &ExtractStudentData()
754:
755: HISTORY: This function originally existed in every statistics module,
756: and performed different tasks, the had some overlap. Due to the need
757: for the data from the different modules, they were combined into
758: a single function.
759:
760: This function now extracts all the necessary course data for a student
761: from what was downloaded from their homeserver. There is some extra
762: time overhead compared to the ProcessStudentInformation function, but
763: it would have had to occurred at some point anyways. This is now
764: typically called while downloading the data it will process. It is
765: the brother function to ProcessStudentInformation.
766:
767: =over 4
768:
769: Input: $input, $output, $data, $name
770:
771: $input: A hash that contains the input data to be processed
772:
773: $output: A hash to contain the processed data
774:
775: $data: A hash containing the information on what is to be
776: processed and how (basically).
777:
778: $name: username:domain
779:
780: The input is slightly different here, but is quite simple.
781: It is currently used where the $input, $output, and $data
782: can and are often the same hashes, but they do not need
783: to be.
784:
785: Output: None
786:
787: *NOTE: There is no output, but an error message is stored away in the cache
788: data. This is checked in &FormatStudentData(). The key username:domain:error
789: will only exist if an error occured. The error is an error from
790: &DownloadCourseInformation().
791:
792: =back
793:
794: =cut
795:
796: sub ExtractStudentData {
797: my ($input, $output, $data, $name)=@_;
798:
799: if(!&CheckDateStampError($input, $data, $name)) {
800: return;
801: }
802:
803: # This little delete thing, should not be here. Move some other
804: # time though.
805: my %allkeys;
806: if(defined($output->{$name.':keys'})) {
807: foreach (split(':::', $output->{$name.':keys'})) {
808: delete $output->{$name.':'.$_};
809: }
810: delete $output->{$name.':keys'};
811: }
812:
813: my ($username,$domain)=split(':',$name);
814:
815: my $Version;
816: my $problemsCorrect = 0;
817: my $totalProblems = 0;
818: my $problemsSolved = 0;
819: my $numberOfParts = 0;
820: my $totalAwarded = 0;
821: foreach my $sequence (split(':', $data->{'orderedSequences'})) {
822: foreach my $problemID (split(':', $data->{$sequence.':problems'})) {
823: my $problem = $data->{$problemID.':problem'};
824: my $LatestVersion = $input->{$name.':version:'.$problem};
825:
826: # Output dashes for all the parts of this problem if there
827: # is no version information about the current problem.
828: $output->{$name.':'.$problemID.':NoVersion'} = 'false';
829: $allkeys{$name.':'.$problemID.':NoVersion'}++;
830: if(!$LatestVersion) {
831: foreach my $part (split(/\:/,$data->{$sequence.':'.
832: $problemID.
833: ':parts'})) {
834: $output->{$name.':'.$problemID.':'.$part.':tries'} = 0;
835: $output->{$name.':'.$problemID.':'.$part.':awarded'} = 0;
836: $output->{$name.':'.$problemID.':'.$part.':code'} = ' ';
837: $allkeys{$name.':'.$problemID.':'.$part.':tries'}++;
838: $allkeys{$name.':'.$problemID.':'.$part.':awarded'}++;
839: $allkeys{$name.':'.$problemID.':'.$part.':code'}++;
840: $totalProblems++;
841: }
842: $output->{$name.':'.$problemID.':NoVersion'} = 'true';
843: next;
844: }
845:
846: my %partData=undef;
847: # Initialize part data, display skips correctly
848: # Skip refers to when a student made no submissions on that
849: # part/problem.
850: foreach my $part (split(/\:/,$data->{$sequence.':'.
851: $problemID.
852: ':parts'})) {
853: $partData{$part.':tries'}=0;
854: $partData{$part.':code'}=' ';
855: $partData{$part.':awarded'}=0;
856: $partData{$part.':timestamp'}=0;
857: foreach my $response (split(':', $data->{$sequence.':'.
858: $problemID.':'.
859: $part.':responseIDs'})) {
860: $partData{$part.':'.$response.':submission'}='';
861: }
862: }
863:
864: # Looping through all the versions of each part, starting with the
865: # oldest version. Basically, it gets the most recent
866: # set of grade data for each part.
867: my @submissions = ();
868: for(my $Version=1; $Version<=$LatestVersion; $Version++) {
869: foreach my $part (split(/\:/,$data->{$sequence.':'.
870: $problemID.
871: ':parts'})) {
872:
873: if(!defined($input->{"$name:$Version:$problem".
874: ":resource.$part.solved"})) {
875: # No grade for this submission, so skip
876: next;
877: }
878:
879: my $tries=0;
880: my $code=' ';
881: my $awarded=0;
882:
883: $tries = $input->{$name.':'.$Version.':'.$problem.
884: ':resource.'.$part.'.tries'};
885: $awarded = $input->{$name.':'.$Version.':'.$problem.
886: ':resource.'.$part.'.awarded'};
887:
888: $partData{$part.':awarded'}=($awarded) ? $awarded : 0;
889: $partData{$part.':tries'}=($tries) ? $tries : 0;
890:
891: $partData{$part.':timestamp'}=$input->{$name.':'.$Version.':'.
892: $problem.
893: ':timestamp'};
894: if(!$input->{$name.':'.$Version.':'.$problem.':resource.'.$part.
895: '.previous'}) {
896: foreach my $response (split(':',
897: $data->{$sequence.':'.
898: $problemID.':'.
899: $part.':responseIDs'})) {
900: @submissions=($input->{$name.':'.$Version.':'.
901: $problem.
902: ':resource.'.$part.'.'.
903: $response.'.submission'},
904: @submissions);
905: }
906: }
907:
908: my $val = $input->{$name.':'.$Version.':'.$problem.
909: ':resource.'.$part.'.solved'};
910: if ($val eq 'correct_by_student') {$code = '*';}
911: elsif ($val eq 'correct_by_override') {$code = '+';}
912: elsif ($val eq 'incorrect_attempted') {$code = '.';}
913: elsif ($val eq 'incorrect_by_override'){$code = '-';}
914: elsif ($val eq 'excused') {$code = 'x';}
915: elsif ($val eq 'ungraded_attempted') {$code = '#';}
916: else {$code = ' ';}
917: $partData{$part.':code'}=$code;
918: }
919: }
920:
921: foreach my $part (split(/\:/,$data->{$sequence.':'.$problemID.
922: ':parts'})) {
923: $output->{$name.':'.$problemID.':'.$part.':wrong'} =
924: $partData{$part.':tries'};
925: $allkeys{$name.':'.$problemID.':'.$part.':wrong'}++;
926:
927: if($partData{$part.':code'} eq '*') {
928: $output->{$name.':'.$problemID.':'.$part.':wrong'}--;
929: $problemsCorrect++;
930: } elsif($partData{$part.':code'} eq '+') {
931: $output->{$name.':'.$problemID.':'.$part.':wrong'}--;
932: $problemsCorrect++;
933: }
934:
935: $output->{$name.':'.$problemID.':'.$part.':tries'} =
936: $partData{$part.':tries'};
937: $output->{$name.':'.$problemID.':'.$part.':code'} =
938: $partData{$part.':code'};
939: $output->{$name.':'.$problemID.':'.$part.':awarded'} =
940: $partData{$part.':awarded'};
941: $allkeys{$name.':'.$problemID.':'.$part.':tries'}++;
942: $allkeys{$name.':'.$problemID.':'.$part.':code'}++;
943: $allkeys{$name.':'.$problemID.':'.$part.':awarded'}++;
944:
945: $totalAwarded += $partData{$part.':awarded'};
946: $output->{$name.':'.$problemID.':'.$part.':timestamp'} =
947: $partData{$part.':timestamp'};
948: $allkeys{$name.':'.$problemID.':'.$part.':timestamp'}++;
949:
950: foreach my $response (split(':', $data->{$sequence.':'.
951: $problemID.':'.
952: $part.':responseIDs'})) {
953: $output->{$name.':'.$problemID.':'.$part.':'.$response.
954: ':submission'}=join(':::',@submissions);
955: $allkeys{$name.':'.$problemID.':'.$part.':'.$response.
956: ':submission'}++;
957: }
958:
959: if($partData{$part.':code'} ne 'x') {
960: $totalProblems++;
961: }
962: }
963: }
964:
965: $output->{$name.':'.$sequence.':problemsCorrect'} = $problemsCorrect;
966: $allkeys{$name.':'.$sequence.':problemsCorrect'}++;
967: $problemsSolved += $problemsCorrect;
968: $problemsCorrect=0;
969: }
970:
971: $output->{$name.':problemsSolved'} = $problemsSolved;
972: $output->{$name.':totalProblems'} = $totalProblems;
973: $output->{$name.':totalAwarded'} = $totalAwarded;
974: $allkeys{$name.':problemsSolved'}++;
975: $allkeys{$name.':totalProblems'}++;
976: $allkeys{$name.':totalAwarded'}++;
977:
978: $output->{$name.':keys'} = join(':::', keys(%allkeys));
979:
980: return;
981: }
982:
983: sub LoadDiscussion {
984: my ($courseID)=@_;
985: my %Discuss=();
986: my %contrib=&Apache::lonnet::dump(
987: $courseID,
988: $ENV{'course.'.$courseID.'.domain'},
989: $ENV{'course.'.$courseID.'.num'});
990:
991: #my %contrib=&DownloadCourseInformation($name, $courseID, 0);
992:
993: foreach my $temp(keys %contrib) {
994: if ($temp=~/^version/) {
995: my $ver=$contrib{$temp};
996: my ($dummy,$prb)=split(':',$temp);
997: for (my $idx=1; $idx<=$ver; $idx++ ) {
998: my $name=$contrib{"$idx:$prb:sendername"};
999: $Discuss{"$name:$prb"}=$idx;
1000: }
1001: }
1002: }
1003:
1004: return \%Discuss;
1005: }
1006:
1007: # ----- END PROCESSING FUNCTIONS ---------------------------------------
1008:
1009: =pod
1010:
1011: =head1 HELPER FUNCTIONS
1012:
1013: These are just a couple of functions do various odd and end
1014: jobs. There was also a couple of bulk functions added. These are
1015: &DownloadStudentCourseData(), &DownloadStudentCourseDataSeparate(), and
1016: &CheckForResidualDownload(). These functions now act as the interface
1017: for downloading student course data. The statistical modules should
1018: no longer make the calls to dump and download and process etc. They
1019: make calls to these bulk functions to get their data.
1020:
1021: =cut
1022:
1023: # ----- HELPER FUNCTIONS -----------------------------------------------
1024:
1025: sub CheckDateStampError {
1026: my ($courseData, $cache, $name)=@_;
1027: if($courseData->{$name.':UpToDate'} eq 'true') {
1028: $cache->{$name.':lastDownloadTime'} =
1029: $courseData->{$name.':lastDownloadTime'};
1030: if($courseData->{$name.':lastDownloadTime'} eq 'Not downloaded') {
1031: $cache->{$name.':updateTime'} = ' Not updated';
1032: } else {
1033: $cache->{$name.':updateTime'}=
1034: localtime($courseData->{$name.':lastDownloadTime'});
1035: }
1036: return 0;
1037: }
1038:
1039: $cache->{$name.':lastDownloadTime'}=$courseData->{$name.':lastDownloadTime'};
1040: if($courseData->{$name.':lastDownloadTime'} eq 'Not downloaded') {
1041: $cache->{$name.':updateTime'} = ' Not updated';
1042: } else {
1043: $cache->{$name.':updateTime'}=
1044: localtime($courseData->{$name.':lastDownloadTime'});
1045: }
1046:
1047: if(defined($courseData->{$name.':error'})) {
1048: $cache->{$name.':error'}=$courseData->{$name.':error'};
1049: return 0;
1050: }
1051:
1052: return 1;
1053: }
1054:
1055: =pod
1056:
1057: =item &ProcessFullName()
1058:
1059: Takes lastname, generation, firstname, and middlename (or some partial
1060: set of this data) and returns the full name version as a string. Format
1061: is Lastname generation, firstname middlename or a subset of this.
1062:
1063: =cut
1064:
1065: sub ProcessFullName {
1066: my ($lastname, $generation, $firstname, $middlename)=@_;
1067: my $Str = '';
1068:
1069: if($lastname ne '') {
1070: $Str .= $lastname.' ';
1071: if($generation ne '') {
1072: $Str .= $generation;
1073: } else {
1074: chop($Str);
1075: }
1076: $Str .= ', ';
1077: if($firstname ne '') {
1078: $Str .= $firstname.' ';
1079: }
1080: if($middlename ne '') {
1081: $Str .= $middlename;
1082: } else {
1083: chop($Str);
1084: if($firstname eq '') {
1085: chop($Str);
1086: }
1087: }
1088: } else {
1089: if($firstname ne '') {
1090: $Str .= $firstname.' ';
1091: }
1092: if($middlename ne '') {
1093: $Str .= $middlename.' ';
1094: }
1095: if($generation ne '') {
1096: $Str .= $generation;
1097: } else {
1098: chop($Str);
1099: }
1100: }
1101:
1102: return $Str;
1103: }
1104:
1105: =pod
1106:
1107: =item &TestCacheData()
1108:
1109: Determine if the cache database can be accessed with a tie. It waits up to
1110: ten seconds before returning failure. This function exists to help with
1111: the problems with stopping the data download. When an abort occurs and the
1112: user quickly presses a form button and httpd child is created. This
1113: child needs to wait for the other to finish (hopefully within ten seconds).
1114:
1115: =over 4
1116:
1117: Input: $ChartDB
1118:
1119: $ChartDB: The name of the cache database to be opened
1120:
1121: Output: -1, 0, 1
1122:
1123: -1: Could not tie database
1124: 0: Use cached data
1125: 1: New cache database created, use that.
1126:
1127: =back
1128:
1129: =cut
1130:
1131: sub TestCacheData {
1132: my ($ChartDB,$isRecalculate,$totalDelay)=@_;
1133: my $isCached=-1;
1134: my %testData;
1135: my $tieTries=0;
1136:
1137: if(!defined($totalDelay)) {
1138: $totalDelay = 10;
1139: }
1140:
1141: if ((-e "$ChartDB") && (!$isRecalculate)) {
1142: $isCached = 1;
1143: } else {
1144: $isCached = 0;
1145: }
1146:
1147: while($tieTries < $totalDelay) {
1148: my $result=0;
1149: if($isCached) {
1150: $result=tie(%testData,'GDBM_File',$ChartDB,&GDBM_READER(),0640);
1151: } else {
1152: $result=tie(%testData,'GDBM_File',$ChartDB,&GDBM_NEWDB(),0640);
1153: }
1154: if($result) {
1155: last;
1156: }
1157: $tieTries++;
1158: sleep 1;
1159: }
1160: if($tieTries >= $totalDelay) {
1161: return -1;
1162: }
1163:
1164: untie(%testData);
1165:
1166: return $isCached;
1167: }
1168:
1169: sub DownloadStudentCourseData {
1170: my ($students,$checkDate,$cacheDB,$extract,$status,$courseID,$r,$c)=@_;
1171:
1172: my $title = 'LON-CAPA Statistics';
1173: my $heading = 'Download and Process Course Data';
1174: my $studentCount = scalar(@$students);
1175:
1176: my $WhatIWant;
1177: $WhatIWant = '(^version:|';
1178: $WhatIWant .= '^\d+:.+?:(resource\.\d+\.';
1179: $WhatIWant .= '(solved|tries|previous|awarded|(\d+\.submission))\s*$';
1180: $WhatIWant .= '|timestamp)';
1181: $WhatIWant .= ')';
1182: # $WhatIWant = '.';
1183:
1184: if($status eq 'true') {
1185: &Apache::lonhtmlcommon::Create_PrgWin($r, $title, $heading);
1186: }
1187:
1188: my $displayString;
1189: my $count=0;
1190: foreach (@$students) {
1191: my %cache;
1192:
1193: if($c->aborted()) { return 'Aborted'; }
1194:
1195: if($status eq 'true') {
1196: $count++;
1197: my $displayString = $count.'/'.$studentCount.': '.$_;
1198: &Apache::lonhtmlcommon::Update_PrgWin($displayString, $r);
1199: }
1200:
1201: my $downloadTime='Not downloaded';
1202: my $needUpdate = 'false';
1203: if($checkDate eq 'true' &&
1204: tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) {
1205: $downloadTime = $cache{$_.':lastDownloadTime'};
1206: $needUpdate = $cache{'ResourceUpdated'};
1207: untie(%cache);
1208: }
1209:
1210: if($c->aborted()) { return 'Aborted'; }
1211:
1212: if($needUpdate eq 'true') {
1213: $downloadTime = 'Not downloaded';
1214: }
1215: my $courseData =
1216: &DownloadCourseInformation($_, $courseID, $downloadTime,
1217: $WhatIWant);
1218: if(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT(),0640)) {
1219: foreach my $key (keys(%$courseData)) {
1220: if($key =~ /^(con_lost|error|no_such_host)/i) {
1221: $courseData->{$_.':error'} = 'No course data for '.$_;
1222: last;
1223: }
1224: }
1225: if($extract eq 'true') {
1226: &ExtractStudentData($courseData, \%cache, \%cache, $_);
1227: } else {
1228: &ProcessStudentData(\%cache, $courseData, $_);
1229: }
1230: untie(%cache);
1231: } else {
1232: next;
1233: }
1234: }
1235: if($status eq 'true') { &Apache::lonhtmlcommon::Close_PrgWin($r); }
1236:
1237: return 'OK';
1238: }
1239:
1240: sub DownloadStudentCourseDataSeparate {
1241: my ($students,$checkDate,$cacheDB,$extract,$status,$courseID,$r,$c)=@_;
1242: my $residualFile = '/home/httpd/perl/tmp/'.$courseID.'DownloadFile.db';
1243: my $title = 'LON-CAPA Statistics';
1244: my $heading = 'Download Course Data';
1245:
1246: my $WhatIWant;
1247: $WhatIWant = '(^version:|';
1248: $WhatIWant .= '^\d+:.+?:(resource\.\d+\.';
1249: $WhatIWant .= '(solved|tries|previous|awarded|(\d+\.submission))\s*$';
1250: $WhatIWant .= '|timestamp)';
1251: $WhatIWant .= ')';
1252:
1253: &CheckForResidualDownload($cacheDB, 'true', 'true', $courseID, $r, $c);
1254:
1255: my $studentCount = scalar(@$students);
1256: if($status eq 'true') {
1257: &Apache::lonhtmlcommon::Create_PrgWin($r, $title, $heading);
1258: }
1259: my $count=0;
1260: my $displayString='';
1261: foreach (@$students) {
1262: if($c->aborted()) {
1263: return 'Aborted';
1264: }
1265:
1266: if($status eq 'true') {
1267: $count++;
1268: $displayString = $count.'/'.$studentCount.': '.$_;
1269: &Apache::lonhtmlcommon::Update_PrgWin($displayString, $r);
1270: }
1271:
1272: my %cache;
1273: my $downloadTime='Not downloaded';
1274: my $needUpdate = 'false';
1275: if($checkDate eq 'true' &&
1276: tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) {
1277: $downloadTime = $cache{$_.':lastDownloadTime'};
1278: $needUpdate = $cache{'ResourceUpdated'};
1279: untie(%cache);
1280: }
1281:
1282: if($c->aborted()) {
1283: return 'Aborted';
1284: }
1285:
1286: if($needUpdate eq 'true') {
1287: $downloadTime = 'Not downloaded';
1288: }
1289:
1290: my $error = 0;
1291: my $courseData =
1292: &DownloadCourseInformation($_, $courseID, $downloadTime,
1293: $WhatIWant);
1294: my %downloadData;
1295: unless(tie(%downloadData,'GDBM_File',$residualFile,
1296: &GDBM_WRCREAT(),0640)) {
1297: return 'Failed to tie temporary download hash.';
1298: }
1299: foreach my $key (keys(%$courseData)) {
1300: $downloadData{$key} = $courseData->{$key};
1301: if($key =~ /^(con_lost|error|no_such_host)/i) {
1302: $error = 1;
1303: last;
1304: }
1305: }
1306: if($error) {
1307: foreach my $deleteKey (keys(%$courseData)) {
1308: delete $downloadData{$deleteKey};
1309: }
1310: $downloadData{$_.':error'} = 'No course data for '.$_;
1311: }
1312: untie(%downloadData);
1313: }
1314: if($status eq 'true') { &Apache::lonhtmlcommon::Close_PrgWin($r); }
1315:
1316: return &CheckForResidualDownload($cacheDB, 'true', 'true',
1317: $courseID, $r, $c);
1318: }
1319:
1320: sub CheckForResidualDownload {
1321: my ($cacheDB,$extract,$status,$courseID,$r,$c)=@_;
1322:
1323: my $residualFile = '/home/httpd/perl/tmp/'.$courseID.'DownloadFile.db';
1324: if(!-e $residualFile) {
1325: return 'OK';
1326: }
1327:
1328: my %downloadData;
1329: my %cache;
1330: unless(tie(%downloadData,'GDBM_File',$residualFile,&GDBM_READER(),0640)) {
1331: return 'Can not tie database for check for residual download: tempDB';
1332: }
1333: unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT(),0640)) {
1334: untie(%downloadData);
1335: return 'Can not tie database for check for residual download: cacheDB';
1336: }
1337:
1338: my @students=();
1339: my %checkStudent;
1340: my $key;
1341: while(($key, undef) = each %downloadData) {
1342: my @temp = split(':', $key);
1343: my $student = $temp[0].':'.$temp[1];
1344: if(!defined($checkStudent{$student})) {
1345: $checkStudent{$student}++;
1346: push(@students, $student);
1347: }
1348: }
1349:
1350: my $heading = 'Process Course Data';
1351: my $title = 'LON-CAPA Statistics';
1352: my $studentCount = scalar(@students);
1353: if($status eq 'true') {
1354: &Apache::lonhtmlcommon::Create_PrgWin($r, $title, $heading);
1355: }
1356:
1357: my $count=1;
1358: foreach my $name (@students) {
1359: last if($c->aborted());
1360:
1361: if($status eq 'true') {
1362: my $displayString = $count.'/'.$studentCount.': '.$name;
1363: &Apache::lonhtmlcommon::Update_PrgWin($displayString, $r);
1364: }
1365:
1366: if($extract eq 'true') {
1367: &ExtractStudentData(\%downloadData, \%cache, \%cache, $name);
1368: } else {
1369: &ProcessStudentData(\%cache, \%downloadData, $name);
1370: }
1371: $count++;
1372: }
1373:
1374: if($status eq 'true') { &Apache::lonhtmlcommon::Close_PrgWin($r); }
1375:
1376: untie(%cache);
1377: untie(%downloadData);
1378:
1379: if(!$c->aborted()) {
1380: my @files = ($residualFile);
1381: unlink(@files);
1382: }
1383:
1384: return 'OK';
1385: }
1386:
1387: # ----- END HELPER FUNCTIONS --------------------------------------------
1388:
1389: 1;
1390: __END__
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