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Diff for /loncom/enrollment/localenroll.pm between versions 1.2 and 1.24

version 1.2, 2003/12/08 16:00:15 version 1.24, 2007/08/31 12:33:35
Line 1 Line 1
   # functions to glue school database system into Lon-CAPA for 
   # automated enrollment
   # $Id$
   #
   # Copyright Michigan State University Board of Trustees
   #
   # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
   #
   # LON-CAPA is free software; you can redistribute it and/or modify
   # it under the terms of the GNU General Public License as published by
   # the Free Software Foundation; either version 2 of the License, or
   # (at your option) any later version.
   #
   # LON-CAPA is distributed in the hope that it will be useful,
   # but WITHOUT ANY WARRANTY; without even the implied warranty of
   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
   #
   # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software
   # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   #
   # /home/httpd/html/adm/gpl.txt
   #
   # http://www.lon-capa.org/
   #
 package localenroll;  package localenroll;
   
 use strict;  use strict;
 use DBI;  
 use LONCAPA::Configuration;  
   
 sub fetch_enrollment {  ################################
   my ($dom,$affiliatesref,$replyref) = @_;  # sub run
   $ENV{SYBASE} = '/usr/local/freetds';  # set this to return 1 if you want the auto enrollment to run
   #
   # Beginning with LON-CAPA version 2.4, use of this routine is
   # deprecated.  Whether or not Autoenroll.pl should run is set
   # by the Domain Coordinator via "Set domain configuration",
   # provided in the Domain Management section of the Main menu. 
   ################################
   
   sub run() {
       my $dom = shift;
       return 0;
   }
   
   my $DB_PATH = "dbi:Sybase:server=ESDB1;database=RO_ClassList";  ################################
   my $DB_USER =""; # Not stored in CVS  # sub fetch_enrollment
   my $DB_PASSWD = ""; # Not stored in CVS  #
   # connects to the institutional classlist data source,
   my $configvars = &LONCAPA::Configuration::read_conf('loncapa.conf');  # reads classlist data and stores in an XML file
   # in /home/httpd/perl/tmp/
   my $dbh= DBI->connect($DB_PATH,$DB_USER,$DB_PASSWD);  #
   my $dbflag = 0;  # classlist files are named as follows:
   if (defined $dbh) {  #
      $dbflag = 1;   # DOMAIN_COURSE_INSTITUTIONALCODE_classlist.xml
      foreach my $crs (sort keys %{$affiliatesref}) {  #
          my $xmlstem =  $$configvars{'lonDaemons'}."/tmp/".$dom."_".$crs."_";  # e.g., msu_43551dedcd43febmsul1_fs03nop590001_classlist.xml
          $$replyref{$crs} = &write_class_data ($dbh,$xmlstem,\@{$$affiliatesref{$crs}});  # where DOMAIN = msu  COURSE = 43551dedcd43febmsul1 
      }  # INSTITUTIONALCODE = fs03nop590001 
      $dbh->disconnect;  # (MSU's course naming scheme - fs03 = Fall semester 2003, nop =
   }  # department name, 590 = course number, 001 = section number.)
   return $dbflag;  #
 }  # fetch_enrollment requires three arguments -
   # $dom - DOMAIN e.g., msu
 sub write_class_data {  # $affiliatesref - a reference to a hash of arrays that contains LON-CAPA 
   my ($dbh,$xmlstem,$coursesref) = @_;  # courses that are to be updated as keys, and institutional coursecodes 
   my $stucount = 0;  # contributing enrollment to that LON-CAPA course as elements in each array.
   foreach my $class (@{$coursesref}) {  # $replyref - a reference to a hash that contains LON-CAPA courses
       if ($class =~ m/^([suf]s\d{2})(\w{2,3})(\d{3,4}\w?)(\d{3})$/) {  # that are to be updated as keys, and the total enrollment count in all 
           my $xmlfile = $xmlstem.$class."_classlist.xml";  # affiliated sections, as determined from institutional data as hash elements. 
           open(FILE, ">$xmlfile");  #
           print FILE qq|<?xml version="1.0" encoding="UTF-8"?>  # As an example, if fetch_enrollment is called to retrieve institutional
 <!DOCTYPE text>  # classlists for a single LON-CAPA course - 43551dedcd43febmsul1 which 
 <students>  # corresponds to fs03nop590, sections 001, 601 and 602 , and the course
 |;  # also accommodates enrollment from a crosslisted course in the ost
   # department - fs03ost580002:
           my $sth = $dbh->prepare("SELECT Pid,Pilot_Id,Student_Name FROM LONCAPA_ClassList WHERE Term_Code = '$1' AND Subj_Code = '$2' AND Crse_Code = '$3' AND Sctn_Code = '$4'  ORDER BY Student_Name");  #
           $sth->execute();  # the affiliatesref would be a reference to %affiliates which would be:
           while ( my($pid,$pilot,$name)  = $sth->fetchrow_array ) {  #
               $stucount ++;  # @{$affiliates{'43551dedcd43febmsul1'}} =
               $name =~ s/^\s//g;  #   ("fs03nop590001","fs03nop590601","fs03nop590602","fs03ost580002");
               $name =~ s/\s$//g;  #
               my ($last,$given,$first,$middle);  # fetch_enrollment would create four files in /home/httpd/perl/tmp/.
               $last = substr($name,0,index($name,","));  # msu_43551dedcd43febmsul1_fs03nop590001_classlist.xml
               $given = substr($name,index($name,",")+1);  # msu_43551dedcd43febmsul1_fs03nop590601_classlist.xml
               $given =~ s/^\s//g;  # msu_43551dedcd43febmsul1_fs03nop590602_classlist.xml
               if ($given =~ m/\w\s\w/) {  # msu_43551dedcd43febmsul1_fs03ost580002_classlist.xml
                   $first = substr($given,0,index($given," "));  #
                   $middle = substr($given,index($given," ")+1);  # In each file, student data would be stored in the following format
                   $middle =~ s/\s//g;  # 
               } else {  # <student username="smith">
                   $first = $given;  #  <autharg>MSU.EDU</autharg>
               }  #  <authtype>krb4</authtype>
               $first =~ s/\s$//g;  #  <email>smith@msu.edu</email>
               print FILE qq| <student username="$pilot">  #  <enddate></enddate>
   <autharg>MSU.EDU</autharg>  #  <firstname>John</firstname>
   <authtype>krb4</authtype>  #  <generation>II</generation>
   <email>$pilot\@msu.edu</email>  #  <groupID>fs03nop590001</groupID>
   <enddate></enddate>  #  <lastname>Smith</lastname>
   <firstname>$first</firstname>  #  <middlename>D</middlename>
   <generation></generation>  #  <startdate></startdate>
   <groupID>$class</groupID>  #  <studentID>A12345678</studentID>
   <lastname>$last</lastname>  # </student>
   <middlename>$middle</middlename>  # 
   <startdate></startdate>  # with the following at the top of the file
   <studentID>$pid</studentID>  #<?xml version="1.0" encoding="UTF-8"?>
  </student>  #<!DOCTYPE text>
 |;  #<students>
 # Format for startdate is YYYY:MM:DD:HH:MM:SS  #
 # Format forenddate is YYYY:MM:DD:HH:MM:SS  # (all comment - #s removed)
 # Authentication is one of: krb4, krb5, int or loc  #
 # Password is either the password for int, or Kerberos domain (for krb4 or krb5), or argument (for loc).  # and a closing:
 # If authentication, password, startdate or enddate are blank, the default for the course is used.  These defaults can be modified using the Automated Enrollment Manager.  #</students>
           }  #
           $sth->finish;  # The <startdate> and the <enddate> are the activation date and expiration date
           print FILE qq|</students>|;  # for this student's role. If they are absent, then the default access start and
           close(FILE);  # default access end dates are used. The default access dates can be set when 
       }  # the course is created, and can be modified using the Automated Enrollment
   }  # Manager, or via the 'Upload a class list','Enroll a single student' or 
   return $stucount;  # 'Modify student data' utilities in the Enrollment Manager, by checking the 
   # 'make these dates the default for future enrollment' checkbox. If no default 
   # dates have been set, then the tudent role will be active immediately, and will 
   # remain active until the role is explicitly expired using ENRL -> Drop students. 
   # If dates are to included in the XML file, they should be in the format
   # YYYY:MM:DD:HH:MM:SS (: separators required).
   #
   # If there were 10 students in fs03nop590001, 5 students in fs03nop59o601, 
   # 8 students in fs03nop590602, and 2 students in fs03ost580002,
   # then $$reply{'43551dedcd43febmsul1'} = 25
   #
   # The purpose of the %reply hash is to detect cases where the institutional 
   # enrollment is 0 (most likely due to a problem with the data source).
   # In such a case, the LON-CAPA course roster is left unchanged (i.e., no
   # students are expired, even if automated drops is enabled.
   # 
   # fetch_enrollment should return a 0 or 1, depending on whether a connection
   # could be established to the institutional data source.
   # 0 is returned if no connection could be made.
   # 1 is returned if connection was successful
   #
   # A return of 1 is required for the calling modules to perform LON-CAPA
   # roster changes based on the contents of the XML classlist file(s), e,g,,
   # msu_43551dedcd43febmsul1_fs03nop590001_classlist.xml
   #
   # XML classlist files are temporary. They are deleted after the enrollment 
   # update process in the calling module is complete.
   #
   ################################
   
   sub fetch_enrollment {
       my ($dom,$affiliatesref,$replyref) = @_;
       foreach my $crs (sort keys %{$affiliatesref}) {
           $$replyref{$crs} = 0;
       }
       my $okflag = 0;
       return $okflag;
 }  }
   
   ###############################
   # sub get_sections
   #
   # This is called by the Automated Enrollment Manager interface
   # (lonpopulate.pm) to create an array of valid sections for 
   # a specific institutional coursecode.
   # e.g., for MSU coursecode: fs03nop590
   # ("001","601","602") would be returned
   #
   # If the array returned contains at least one element, then 
   # the interface offerred to the course coordinator, lists
   # official sections and provides a checkbox to use to
   # select enrollment in the LON-CAPA course from each official section.  
   #
   # get_sections takes two arguments - (a) the institutional coursecode
   # (in the MSU case this is a concatenation of semester code, department
   # and course number), and (b) the LON-CAPA domain that contains the course. 
   # 
   # If there is no access to official course sections at your institution,
   # then an empty array is returned, and the Automated Enrollment Manager
   # interface will allow the course coordinator to enter section numbers
   # in text boxes.
   # 
   ###############################
   
 sub get_sections {  sub get_sections {
       my ($coursecode,$dom) = @_;
       my @secs = ();
       return @secs;
   }
   
   ###############################
   # sub new_course
   #
   # This is called by loncreatecourse.pm and 
   # lonpopulate.pm to record that fact that a new course section
   # has been added to LON-CAPA that requires access to institutional data
   # At MSU, this is required, as institutional classlists can only made
   # available to faculty who are officially assigned to a course.
   # 
   # The new_course subroutine is used to check that the course owner
   # of the LON-CAPA course is permitted to access the institutional
   # classlist for any course sections and crosslisted classes that
   # the course coordinator wishes to have affiliated with the course.
   # 
   # If access is permitted, then 'ok' is returned.
   # The course section or crosslisted course will only be added to the list of
   # affiliates if 'ok' is returned.
   #
   # new_course takes three arguments -
   # (a) the institutional courseID (in the MSU case this is a concatenation of 
   # semester code, department code, course number, and section number
   # e.g., fs03nop590001).
   # (b) the course owner. This is the LON-CAPA username and domain of the course 
   # coordinator assigned to the course when it is first created, in the form
   # username:domain
   # (c) the LON-CAPA domain that contains the course
   #
   #################################
   
   sub new_course  {
       my ($course_id,$owner,$dom) = @_;
       my $outcome = 'ok';
       return $outcome;
   }
   
   ###############################
   # sub validate_courseID
   #
   # This is called whenever a new course section or crosslisted course
   # is being affiliated with a LON-CAPA course (i.e., by loncreatecourse.pm
   # and the Automated Enrollment Manager in lonpopulate.pm).
   # A check is made that the courseID that the course coordinator wishes
   # to affiliate with the course is valid according to the institutional
   # schedule of official classes 
   #
   # A valid courseID is confirmed by returning 'ok'
   #
   # validate_courseID takes two arguments -
   # (a) the institutional courseID (in the MSU case this is a concatenation of
   # semester code, department code, course number, and section number
   # e.g., fs03nop590001).
   # (b) the LON-CAPA domain that contains the course
   #
   ###############################  
   
   sub validate_courseID {
       my ($course_id,$dom) = @_;
       my $outcome = 'ok';
       return $outcome;   
   }
   
   ###############################
   # sub create_password 
   #
   # This is called when the authentication method set for the automated 
   # enrollment process when enrolling new users in the domain is "localauth".
   # This could be signalled for the specific user by the value of localauth
   # for the <authtype> tag from the classlist.xml files, or if this is blank,
   # the default authtype, set by the domain coordinator when creating the course
   # with loncreatecourse.pm.
   #  
   # create_password takes three arguments -
   # (a) $authparam - the value of <autharg> from the classlist.xml files,
   # or if this blank, the default autharg, set by the domain coordinator when 
   # creating the course with loncreatecourse.pm
   # (b) $dom - the domain of the new user.
   # (c) $username - the username of the new user (currently not actually used)
   #
   # Four values are returned:
   # (a) the value of $authparam - which might have been changed
   # (b) a flag to indicate whether a password had been created
   # 0 means no password created
   # 1 means password created.  In this case the calling module - Enrollment.pm
   # will send the LON-CAPA username and password to the new user's e-mail
   # (if one was provided), or to the course owner (if one was not provided and
   # the new user was created by the automated process), or to the active
   # course coordinator (if the new user was created using the 'update roster
   # now' interface included in the Automated Enrollment Manager).  
   # (c) a flag to indicate that the authentication method is correct - 'ok'.
   # If $authchk is not set to 'ok' then account creation and enrollment of the 
   # new user will not occur.
   # (d) if a password was created it can be sent along.  This is the password 
   # which will be included in the e-mail sent to the new user, or made available    
   # to the course owner/course coordinator if no e-mail address is provided. If
   # you do not wish to send a password, but want to give instructions on obtaining
   # one, you could set $newpasswd as those instructions. (e.g.,
   # $newpasswd = '(Please visit room 212, ACNS Bldg. to obtain your password)';
   # The value of $newpasswd is NOT written in the user's LON-CAPA passwd file in
   # /home/httpd/lonUsers/$dom/a/b/c/abcuser/passwd, which in the case of a user
   # employing localauth will contain 'localauth:$authparam'.  If you need to include
   # a parameter in the user's passwd file, you should return it as $authparam,
   # i.e., the first of the variables returned by create_password().             
   ###############################
   
   sub create_password {
       my ($authparam,$dom,$username) = @_;
       my $authchk = 'ok';
       my $newpasswd = '';
       my $create_passwd = 0;
       return ($authparam,$create_passwd,$authchk,$newpasswd);
   }
   
   ###############################
   # sub instcode_format 
   #
   # Split coursecodes into constituent parts.   
   # e.g., INSTITUTIONALCODE = fs03nop590, LON-CAPA COURSEID: 43551dedcd43febmsul1
   # (MSU's course naming scheme - fs03 = Fall semester 2003, nop =
   # department name, 590 = course number)
   #
   # Incoming data:
   # $dom (domain)
   # $$instcodes{'43551dedcd43febmsul1'} = 'fs03nop590' (hash of courseIDs)
   # 
   # fs03nop590 would be split as follows
   # @{$codetitles} = ("year","semester","department","number")
   # $$codes{{'year'} = '2003'
   # $$codes{'semester'} = 'Fall'
   # $$codes{'department'} = 'nop'
   # $$codes{'number'} = '590'
   #
   # requires six arguments:
   # domain ($dom)
   # reference to hash of institutional course IDs ($instcodes)  
   # reference to hash of codes ($codes)
   # reference to array of titles ($codetitles)
   # reference to hash of abbreviations used in categories
   # reference to hash of arrays specifying sort order used in category titles   
   #
   # e.g.,     %{$$cat_titles{'Semester'}} = (
   #                   fs => 'Fall',
   #                   ss => 'Spring',
   #                   us => 'Summer');
   #
   # e.g., @{$$cat_order{'Semester'}} = ('ss','us','fs'); 
   # returns 1 parameter: 'ok' if no processing errors.  
   ###############################
   
   sub instcode_format () {
       my ($dom,$instcodes,$codes,$codetitles,$cat_titles,$cat_order) = @_;
       my $outcome = 'ok';
       return $outcome;
   }
   
   ###############################
   # sub institutional_photos
   #
   # Called when automated enrollment manager is used to update student photos.
   #
   # Incoming data: six arguments
   # (a) $dom (domain)
   # (b) $crs (LONCAPA course number)
   # (c) $affiliates: a reference to a hash with the keys set to the 
   # institutional course IDs for the course.
   # (d) $result: a reference to a hash which will return usernames  
   #     of students (& separated) in following categories (the keys):
   #     new, update, missing, same, deleted, noid, nouser. The list 
   #     includes those students for whom the result of the modification 
   #     process was either addition of a new photo. update of an
   #     existing photo, photo was found to be missing from institution's
   #     data store, photo used is same as before, or photo was 
   #     deleted from storage on LON-CAPA server housing student's
   #     information, no student ID was available. 
                  
   # (e) $action: the type of action needed. (e.g., update, delete);
   # (f) $students: a reference to a hash with the keys set to student 
   # usernames and domains in the form username:domain, and values set
   # to the studentID, if action is required for specific students.  
   #
   # returns 1 parameter: 'ok' if no processing errors.
   # other course or student specific values can be stored as values
   # in the appropriate referenced hashes. 
   ###############################
   
   sub institutional_photos {
       my ($dom,$crs,$affiliates,$result,$action,$students) = @_;
       my $outcome = 'ok';
       return $outcome;
   }
   
   ###############################
   # sub photo_permission
   #
   # Incoming data: three arguments
   # (a) $dom (domain)
   # (b) $perm_reqd: a reference to a a scalar that is either 'yes'
   # if a course owner must indicate acceptance of conditions of use,
   # 'no' otherwise.
   # (c) $conditions: the text of the conditions of use.
   #    
   # returns 1 parameter: 'ok' if no processing errors.
   # $$perm_reqd is set to 'yes' or 'no'
   # $$agreement is set to conditions of use - plain text string
   #             which will be displayed in a textarea in a web form.
   ###############################
    
   sub photo_permission {
      my ($dom,$perm_reqd,$conditions) = @_;
      $$perm_reqd = 'no';
      $$conditions = '';
      my $outcome = 'ok';
      return $outcome;
   }
   
   
   ###############################
   # sub manager_photo_update
   #
   # Incoming data: one argument
   # (a) $dom (domain)
   #
   # returns 2 parameters: update (0 or 1), and comment.
   # Called by automated enrollment manager, to determine 
   # whether "Update Student photos" button will be available,
   # and if so, the message (plain text string) that will be displayed
   # with the button. 
   ###############################
                                                                                           
   sub manager_photo_update {
       my ($dom) = @_;
       my $update = 0;
       my $comment = '';
       return ($update,$comment);
   }
   
   ###############################
   # sub check_section
   #
   # Incoming data: three arguments (+ fourth optional argument)
   # (a) $class - institutional class id (coursecode concatanated with section) 
   # (b) $owner - course owner (2.2 and later username:domain; pre-2.2 username)
   # (c) $dom 0 domain of course
   # (d) $dbh - optional database handle  
   #
   # returns 1 parameter - $sectioncheck ('ok' or other value). 
   # Verifies that course owner has access to classlist for specific class
   # according to institution's SIS. 'ok' if access available  
   ###############################
   
   sub check_section {
       my ($class,$owner,$dom,$dbh) = @_;
       my $sectioncheck = 'ok';
       return $sectioncheck;
   }
   
   ###############################
   # sub instcode_defaults
   #
   # Incoming data: three arguments
   # (a) $dom - domain
   # (b) $defaults - reference to hash which will contain default regular
   #                 expression matches for different components of an 
   #                 institutional course code 
   # (c) $code_order - reference to array which will contain order of 
   #                   component parts used in institutional code.  
   #
   # returns 1 parameter - ('ok' or other value).
   # Used to construct a regular expression to be used when searching for
   # courses based on fragments of an institutional code.
   # $defaults contains defaults to use for each component, and code_order
   # contains keys of hash in order in which they are to be concatenated.
   #
   # e.g., INSTITUTIONALCODE = fs03nop590
   # (MSU's course naming scheme - fs  = semester, 03 = year, nop =
   # department name, 590 = course number)
   #
   #     %{$defaults} = (
   #        'Year' => '\d{2}',
   #        'Semester' => '^[sfu]s', 
   #        'Department' => '\w{2,3}',
   #        'Number' => '\d{3,4}\w?',
   #     );
   #
   #     @{$code_order} = ('Semester','Year','Department','Number');
   #
   ###############################
   
   sub instcode_defaults {
       my ($dom,$defaults,$code_order) = @_;
       return 'ok';
   }
   
   ###############################
   # sub allusers_info
   #
   # Incoming data: three arguments
   # (a) $dom - domain
   # (b) $instusers - reference to hash which will contain hashes, 
   #                 where keys will be usernames and value will be a 
   #                 hash of user information. Keys in the inner hash 
   #                 will be some or all of: lastname,firstname,
   #                 middlename, generation, id, inststatus - 
   #                 institutional status (e.g., faculty,staff,student)
   #                 Values are all scalars except inststatus,
   #                 which is an array.
   # (c) $instids - reference to hash which will contain ID numbers. 
   #                keys will be unique IDs (student or faculty/staff ID)
   #                values will be either: scalar (username) or an array 
   #                if a single ID matches multiple usernames.
   # returns 1 parameter - 'ok' if no processing error, or other value 
   #                       if an error occurred.
   # side effects - populates the $instusers and $instids refs to hashes.
   #                with information for all users from all available 
   #                institutional datafeeds.
   #
   ###############################
   
   sub allusers_info {
       my ($dom,$instusers,$instids) = @_;
       my $outcome = 'ok';
       return $outcome; 
   }
   
   ###############################
   # sub get_userinfo
   #
   # Incoming data: four required arguments and additional optional arguments
   # Two modes of operation:
   # (1) Retrieves institutional data for a single user either by username
   #     if $uname is included as second argument, or by ID if $id is 
   #     included as a third argument.  Either (b) or (c) must be provided.
   #     (g), (h) and (i) will be undefined.
   # (2) Retrieves institutional user data from search of an institutional
   #     directory based on a search. (g) and (h) are required.
   #     (i) is optional. (b) and (c) will be undefined. 
   #
   # (a) $dom - domain
   # (b) $uname - username of user
   # (c) $id - student/faculty ID of user
   # (d) $instusers - reference to hash which will contain info for user
   #                 as key = value; keys will be one or all of:
   #                 lastname,firstname,middlename,generation,id,inststatus -
   #                 institutional status (e.g., faculty,staff,student)
   #                 Values are all scalars except inststatus,
   #                 which is an array.
   # (e) $instids - reference to hash which will contain ID numbers - 
   #                 keys will be unique IDs (student or faculty/staff ID)  
   #                 values will be either: scalar (username) or an array
   #                 if a single ID matches multiple usernames.
   # (f) $types - optional reference to array which contains 
   #              institutional types to check.
   # (g) $srchby - optional if $uname or $id defined, otherwise required.
   #               Allowed values include: 1. lastfirst, 2. last, 3. uname
   #               corresponding to searches by 1. lastname,firstname;
   #               2. lastname; 3. username
   # (h) $srchterm - optional if $uname or $id defined, otherwise required
   #                String to search for.
   # (i) $srchtype - optional. Allowed values: contains, begins (defaults
   #                to exact match otherwise).
   #
   # returns 1 parameter - 'ok' if no processing error, or other value 
   #                       if an error occurred.
   # side effects - populates the $instusers and $instids refs to hashes.
   #                with information for specified username, or specified
   #                id, if fifth argument provided, from all available, or 
   #                specified (e.g., faculty only) institutional datafeeds,
   #                if sixth argument provided.
   #
   # WARNING: You need to set $outcome to 'ok' once you have customized
   #          this routine to communicate with an instititional 
   #          directory data source, otherwise institutional directory 
   #          searches will always be reported as being unavailable
   #          in domain $dom.
   #
   ###############################
   
   sub get_userinfo {
       my ($dom,$uname,$id,$instusers,$instids,$types,
           $srchby,$srchterm,$srchtype) = @_;
       my $outcome = 'unavailable';
       return $outcome;
   }
   
   ###############################
   # sub inst_usertypes 
   #
   # Incoming data: three arguments
   # (a) $dom - domain
   # (b) $usertypes - reference to hash which will contain 
   #                 key = value, where keys are institution 
   #                 affiliation types (e.g., Faculty, Student etc.)
   #                 and values are titles (e.g., Faculty/Academic Staff)
   # (c) $order - reference to array which will contain the order in
   #              which institutional types should be shown
   #              when displaying data tables (e.g., default quotas    
   #              or updateable user fields (see domainprefs.pm) 
   # returns 1 parameter - 'ok' if no processing error, or other value 
   #                        if an error occurred.
   #
   ###############################
   
   sub inst_usertypes {
       my ($dom,$usertypes,$order) = @_;
       @{$order} = ();
       %{$usertypes} = ();
       my $outcome = 'ok';
       return $outcome;
   }
   
   ###############################
   # sub AUTOLOAD
   #
   # Incoming data: none
   # Returns ''
   #
   # Prevents errors when undefined subroutines are called in this package
   # Will allow new routines added in the future to be called from lond etc.
   # without the need for customized versions of local*.pm packages to be
   # modified to include the new subroutines immediately.
   #
   # See "Programming Perl" 3rd ed. pp 296-298.   
   ###############################
   
   sub AUTOLOAD {
       our $AUTOLOAD;
       return '';
 }  }
   
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Removed from v.1.2  
changed lines
  Added in v.1.24

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