/usr/share/perl5/AMC/DataModule/association.pm is in auto-multiple-choice-common 1.2.1-3build1.
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#
# Copyright (C) 2011-2012 Alexis Bienvenue <paamc@passoire.fr>
#
# This file is part of Auto-Multiple-Choice
#
# Auto-Multiple-Choice 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.
#
# Auto-Multiple-Choice 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 Auto-Multiple-Choice. If not, see
# <http://www.gnu.org/licenses/>.
package AMC::DataModule::association;
# AMC associations management.
# This module is used to store (in a SQLite database) and handle all
# data concerning associations between completed answer sheets and
# students (from the students list).
# TABLES:
#
# association holds data concerning association between a student
# completed answer sheet (identified by its student number and its
# copy number) and the student name (in fact the student identifier
# found in the students list file).
#
# * student is the student number of the completed answer sheet.
#
# * copy is the copy number (0 if the question sheet has not been
# photocopied, and 1,2,... otherwise).
#
# * auto is the student ID (a primary key found in the students list
# file) associated with the answer sheet by automatic association,
# or NULL if no automatic association were made for this sheet.
#
# * manual is the student ID (a primary key found in the students list
# file) associated with the answer sheet by manual association,
# or NULL if no automatic association were made for this sheet.
# VARIABLES:
#
# key_in_list is the column name from students list file where to find
# the primary key that will be used in the association data to
# identify a student.
#
# code is the code name in the LaTeX source file (first argument given
# to the \AMCcode command) that is used for automatic association.
use AMC::Basic;
use AMC::DataModule;
use IO::File;
use XML::Simple;
@ISA=("AMC::DataModule");
sub version_current {
return(1);
}
sub version_upgrade {
my ($self,$old_version)=@_;
if($old_version==0) {
# Upgrading from version 0 (empty database) to version 1 :
# creates all the tables.
debug "Creating scoring tables...";
$self->sql_do("CREATE TABLE IF NOT EXISTS ".$self->table("association")
." (student INTEGER, copy INTEGER, manual TEXT, auto TEXT, PRIMARY KEY (student,copy))");
$self->populate_from_xml;
return(1);
}
return('');
}
# populate_from_xml read the old format XML file (if any) and insert
# it in the new SQLite database
sub populate_from_xml {
my ($self)=@_;
my $assoc_file=$self->{'data'}->directory;
$assoc_file =~ s:/[^/]+/?$:/association.xml:;
return if(!-f $assoc_file);
$self->progression('begin',__"Fetching association results from old format XML files...");
my $i=IO::File->new($assoc_file,"<:encoding(utf-8)");
my $a=XMLin($i,'ForceArray'=>1,'KeyAttr'=>['id']);
$i->close();
$self->variable('key_in_list',$a->{'liste_key'});
$self->variable('code',$a->{'notes_id'});
my @s=(keys %{$a->{'copie'}});
my $frac=0;
for my $student (@s) {
my $s=$a->{'copie'}->{$student};
$self->statement('NEWAssoc')
->execute($student,0,$s->{'manuel'},$s->{'auto'});
$frac++;
$self->progression('fraction',$frac/(1+$#s));
}
$self->progression('end');
}
# defines all the SQL statements that will be used
sub define_statements {
my ($self)=@_;
my $at=$self->table("association");
my $t_page=$self->table("page","capture");
$self->{'statements'}=
{
'NEWAssoc'=>{'sql'=>"INSERT INTO $at"
." (student,copy,manual,auto) VALUES (?,?,?,?)"},
'insert'=>{'sql'=>"INSERT OR IGNORE INTO $at"
." (student,copy,manual,auto) VALUES (?,?,?,?)"},
'getManual'=>{'sql'=>"SELECT manual FROM $at"
." WHERE student=? AND copy=?"},
'getAuto'=>{'sql'=>"SELECT auto FROM $at"
." WHERE student=? AND copy=?"},
'setManual'=>{'sql'=>"UPDATE $at"
." SET manual=? WHERE student=? AND copy=?"},
'setAuto'=>{'sql'=>"UPDATE $at"
." SET auto=? WHERE student=? AND copy=?"},
'getReal'=>{'sql'=>"SELECT CASE"
." WHEN manual IS NOT NULL THEN manual"
." ELSE auto END"
." FROM $at"
." WHERE student=? AND copy=?"},
'realCount'=>{'sql'=>"SELECT COUNT(*) FROM ( SELECT CASE"
." WHEN manual IS NOT NULL THEN manual"
." ELSE auto END AS real"
." FROM $at"
." ) WHERE real=?||''"},
'realBack'=>{'sql'=>"SELECT student,copy FROM ( SELECT CASE"
." WHEN manual IS NOT NULL THEN manual"
." ELSE auto END AS real, student, copy"
." FROM $at"
." ) WHERE real=?||''"},
'counts'=>{'sql'=>"SELECT COUNT(auto),COUNT(manual),"
." SUM(CASE WHEN auto IS NOT NULL OR manual IS NOT NULL"
." THEN 1 ELSE 0 END)"
." FROM $at"},
'clearAuto'=>{'sql'=>"UPDATE $at SET auto=NULL"},
'findManual'=>{'sql'=>"SELECT student,copy FROM $at WHERE manual=?||''"},
'unlink'=>{'sql'=>"UPDATE $at SET manual="
." ( CASE WHEN manual IS NULL OR auto=?||'' THEN 'NONE' ELSE NULL END )"
." WHERE manual=? OR ( auto=?||'' AND manual IS NULL )"},
'assocMissingCount'=>{'sql'=>"SELECT COUNT(*) FROM"
."(SELECT student,copy FROM $t_page"
." EXCEPT SELECT student,copy FROM $at"
." WHERE manual IS NOT NULL OR auto IS NOT NULL)"},
'deleteAssociations'=>{'sql'=>"DELETE FROM $at"
." WHERE student=? AND copy=?"},
'list'=>{'sql'=>"SELECT * FROM $at ORDER BY student,copy"},
};
}
# get_manual($student,$copy) returns the manual association ID for the
# given answer sheet.
sub get_manual {
my ($self,$student,$copy)=@_;
return($self->sql_single($self->statement('getManual'),
$student,$copy));
}
# get_auto($student,$copy) returns the automatic association ID for the
# given answer sheet.
sub get_auto {
my ($self,$student,$copy)=@_;
return($self->sql_single($self->statement('getAuto'),
$student,$copy));
}
# get_real($student,$copy) returns the resulting association ID for the
# given answer sheet (manual one if present, or automatic one).
sub get_real {
my ($self,$student,$copy)=@_;
return($self->sql_single($self->statement('getReal'),
$student,$copy));
}
# set_manual($student,$copy,$manual) sets the manual association ID for the
# given answer sheet.
sub set_manual {
my ($self,$student,$copy,$manual)=@_;
my $n=$self->statement('insert')->execute($student,$copy,$manual,undef);
if($n<=0) {
$self->statement('setManual')->execute($manual,$student,$copy);
}
}
# set_auto($student,$copy,$manual) sets the automatic association ID for the
# given answer sheet.
sub set_auto {
my ($self,$student,$copy,$auto)=@_;
my $n=$self->statement('insert')->execute($student,$copy,undef,$auto);
if($n<=0) {
$self->statement('setAuto')->execute($auto,$student,$copy);
}
}
# counts returns a list containing the number A of automatic
# associations, the number M of manual associations, and the total
# number T of answer sheets that are associated. T is not always equal
# to A+M, as a particular answer sheet may have automatic AND manual
# associations, for exemple when automatic association did not work
# well and has been corrected by manual association.
sub counts {
my ($self)=@_;
my $sth=$self->statement('counts');
$sth->execute;
return(@{$sth->fetchrow_arrayref});
}
# clear clears all association data.
sub clear {
my ($self)=@_;
$self->sql_do("DELETE FROM ".$self->table('association'));
}
# clear_auto clears all automatic association data
sub clear_auto {
my ($self)=@_;
$self->statement('clearAuto')->execute;
}
# check_keys($key_in_list,$code) checks that the value of the
# variables 'key_in_list' and 'code' corresponds to the given
# values. If not, association data is cleared.
sub check_keys {
my ($self,$key_in_list,$code)=@_;
if($self->variable('key_in_list') ne $key_in_list) {
debug "Association variable mismatch: clearing database";
$self->clear;
$self->variable('key_in_list',$key_in_list);
$self->variable('code',$code);
} elsif($code ne '---' && $self->variable('code') ne $code) {
debug "Association <code> variable mismatch: clearing automatic association";
$self->clear_auto;
$self->variable('code',$code);
}
}
# real_back($code) returns the (student,copy) list corresponding to
# the answer sheet that is currently associated with the student ID
# $code.
sub real_back {
my ($self,$code)=@_;
return($self->sql_row($self->statement('realBack'),$code));
}
# state($student,$copy) returns:
#
# 0 if this answer sheet has not been associated with a student name ;
#
# 1 if this answer sheet has been associated with a student name, and
# no other sheet has been associated with the same student name ;
#
# 2 if this answer sheet has been associated with a student name, but
# some other sheets has been associated with the same student name.
sub state {
my ($self,$student,$copy)=@_;
my $r=$self->get_real($student,$copy);
if(!defined($r) || !$r || $r eq 'NONE') {
return(0);
} else {
my $nb=$self->sql_single($self->statement('realCount'),$r);
return($nb==1 ? 1 : 2);
}
}
# delete_target($code) removes associations made with student ID $code
# (manual associations with this ID are removed, and automatic
# associations with this ID are overwritten with a manual association
# with 'NONE'). This method also returns a reference to an array of
# array references [<student>,<copy>] with all the sheets
# that were associated with this student name.
sub delete_target {
my ($self,$code)=@_;
my $r=$self->dbh->selectall_arrayref($self->statement('realBack'),{},$code);
$self->statement('unlink')->execute($code,$code,$code);
return($r);
}
# missing_count returns the number of entered sheets without association
sub missing_count {
my ($self)=@_;
$self->{'data'}->require_module('capture');
return($self->sql_single($self->statement('assocMissingCount')));
}
# delete_association_data($student,$copy) deletes all association data
# for this answer sheet.
sub delete_association_data {
my ($self,$student,$copy)=@_;
for my $part (qw/Associations/) {
$self->statement('delete'.$part)->execute($student,$copy);
}
}
# list() returns all association data
sub list {
my ($self)=@_;
return($self->dbh->selectall_arrayref($self->statement('list'),{Slice=>{}}));
}
1;
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