loncom/interface/loncoursedata.pm - diff

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Diff for /loncom/interface/loncoursedata.pm between versions 1.153 and 1.172

version 1.153, 2006/02/05 18:49:47	version 1.172, 2006/05/18 18:37:23
Line 49 Set of functions that download and proce	Line 49 Set of functions that download and proce
package Apache::loncoursedata;	package Apache::loncoursedata;

use strict;	use strict;
use Apache::Constants qw(:common :http);
use Apache::lonnet;	use Apache::lonnet;
use Apache::lonhtmlcommon;	use Apache::lonhtmlcommon;
	use Apache::longroup;
use Time::HiRes;	use Time::HiRes;
use Apache::lonmysql;	use Apache::lonmysql;
use HTML::TokeParser;	use HTML::TokeParser;
Line 66 and/or itself.	Line 66 and/or itself.

=cut	=cut

sub LoadDiscussion {
my ($courseID)=@_;
my %Discuss=();
my %contrib=&Apache::lonnet::dump(
$courseID,
$env{'course.'.$courseID.'.domain'},
$env{'course.'.$courseID.'.num'});

#my %contrib=&DownloadCourseInformation($name, $courseID, 0);

foreach my $temp(keys %contrib) {
if ($temp=~/^version/) {
my $ver=$contrib{$temp};
my ($dummy,$prb)=split(':',$temp);
for (my $idx=1; $idx<=$ver; $idx++ ) {
my $name=$contrib{"$idx:$prb:sendername"};
$Discuss{"$name:$prb"}=$idx;
}
}
}

return \%Discuss;
}

################################################	################################################
################################################	################################################

Line 184 fifth are 'section', 'status' (enrollmen	Line 160 fifth are 'section', 'status' (enrollmen
data. This table has its PRIMARY KEY on the 'student_id' column and is indexed	data. This table has its PRIMARY KEY on the 'student_id' column and is indexed
on 'student', 'section', and 'status'.	on 'student', 'section', and 'status'.

	=item $groupnames_table

	The groupnames_table has 2 columns. The first is a 'group_id' assigned by
	MySQL. The second is 'groupname' which is the name of the group in the course.

	=item $students_groups_table

	The students_groups_table has 2 columns. The first is the 'student_id', and the
	second is the 'group_id'. These two columns comprise the PRIMARY KEY for this
	table, as an individual student may be affiliated with more than one group at
	any time. This table is indexed on both student_id and group_id.

=back	=back

=item Tables used to store current status data	=item Tables used to store current status data
Line 229 The response table holds data (documente	Line 217 The response table holds data (documente
associated with a particular response id which is stored when a student	associated with a particular response id which is stored when a student
attempts a problem. The following are the columns of the table, in order:	attempts a problem. The following are the columns of the table, in order:
'symb_id','part_id','response_id','student_id','transaction','tries',	'symb_id','part_id','response_id','student_id','transaction','tries',
'awarddetail', 'response_specific' (data particular to the response	'awarddetail', 'response_specific', 'response_specific_value',
type), 'response_specific_value', and 'submission (the text of the students	'response_specific_2', 'response_specific_value_2', and 'submission
submission). The primary key is based on the first five columns listed above.	(the text of the students submission). The primary key is based on the
	first five columns listed above.

=item $fulldump_part_table	=item $fulldump_part_table

Line 295 my $current_course ='';	Line 284 my $current_course ='';
my $symb_table;	my $symb_table;
my $part_table;	my $part_table;
my $student_table;	my $student_table;
	my $groupnames_table;
	my $students_groups_table;
my $performance_table;	my $performance_table;
my $parameters_table;	my $parameters_table;
my $fulldump_response_table;	my $fulldump_response_table;
Line 393 sub init_dbs {	Line 384 sub init_dbs {
'status (15)',]},],	'status (15)',]},],
};	};
#	#
	my $groupnames_table_def = {
	id => $groupnames_table,
	permanent => 'no',
	columns => [{ name => 'group_id',
	type => 'MEDIUMINT UNSIGNED',
	restrictions => 'NOT NULL',
	auto_inc => 'yes', },
	{ name => 'groupname',
	type => 'VARCHAR(100) BINARY',
	restrictions => 'NOT NULL UNIQUE'},
	],
	'PRIMARY KEY' => ['group_id'],
	'KEY' => [{ columns => ['groupname (100)',]},],
	};
	#
	my $students_groups_table_def = {
	id => $students_groups_table,
	permanent => 'no',
	columns => [{ name => 'student_id',
	type => 'MEDIUMINT UNSIGNED',
	restrictions => 'NOT NULL', },
	{ name => 'group_id',
	type => 'MEDIUMINT UNSIGNED',
	restrictions => 'NOT NULL', },
	],
	'PRIMARY KEY' => ['student_id','group_id'],
	'KEY' => [{ columns => ['student_id'] },
	{ columns => ['group_id'] },],
	};
	#
my $performance_table_def = {	my $performance_table_def = {
id => $performance_table,	id => $performance_table,
permanent => 'no',	permanent => 'no',
Line 491 sub init_dbs {	Line 512 sub init_dbs {
type => 'TINYTEXT' },	type => 'TINYTEXT' },
{ name => 'response_specific_value',	{ name => 'response_specific_value',
type => 'TINYTEXT' },	type => 'TINYTEXT' },
	{ name => 'response_specific_2',
	type => 'TINYTEXT' },
	{ name => 'response_specific_value_2',
	type => 'TINYTEXT' },
{ name => 'submission',	{ name => 'submission',
type => 'TEXT'},	type => 'TEXT'},
],	],
Line 622 sub init_dbs {	Line 647 sub init_dbs {
&Apache::lonmysql::get_error());	&Apache::lonmysql::get_error());
return 10;	return 10;
}	}
	$tableid = &Apache::lonmysql::create_table($groupnames_table_def);
	if (! defined($tableid)) {
	&Apache::lonnet::logthis("error creating groupnames_table: ".
	&Apache::lonmysql::get_error());
	return 11;
	}
	$tableid = &Apache::lonmysql::create_table($students_groups_table_def);
	if (! defined($tableid)) {
	&Apache::lonnet::logthis("error creating student_groups_table: ".
	&Apache::lonmysql::get_error());
	return 12;
	}
return 0;	return 0;
}	}

Line 893 sub populate_student_table {	Line 930 sub populate_student_table {
return;	return;
}	}

	my $have_read_groupnames_table = 0;
	my %ids_by_groupname;

	sub get_group_id {
	my ($groupname) = @_;
	if (! $have_read_groupnames_table) {
	my @Result = &Apache::lonmysql::get_rows($groupnames_table);
	foreach (@Result) {
	$ids_by_groupname{$_->[1]}=$_->[0];
	}
	$have_read_groupnames_table = 1;
	}
	if (! exists($ids_by_groupname{$groupname})) {
	&populate_groupnames_table();
	undef(%ids_by_groupname);
	my @Result = &Apache::lonmysql::get_rows($groupnames_table);
	foreach (@Result) {
	$ids_by_groupname{$_->[1]}=$_->[0];
	}
	}
	if (exists($ids_by_groupname{$groupname})) {
	return $ids_by_groupname{$groupname};
	}
	return undef; # error
	}

	sub populate_groupnames_table {
	my ($courseid) = @_;
	if (! defined($courseid)) {
	$courseid = $env{'request.course.id'};
	}
	&setup_table_names($courseid);
	&init_dbs($courseid,0);
	my $dbh = &Apache::lonmysql::get_dbh();
	my $cdom = $env{'course.'.$courseid.'.domain'};
	my $cnum = $env{'course.'.$courseid.'.num'};
	my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum);
	return if (!%curr_groups);
	my $request = 'INSERT IGNORE INTO '.$groupnames_table.
	'(groupname) VALUES ';
	foreach my $groupname (sort(keys(%curr_groups)),'none') {
	$request .= "('".$groupname."'),";
	}
	chop($request);
	$dbh->do($request);
	if ($dbh->err()) {
	&Apache::lonnet::logthis("error ".$dbh->errstr().
	" occured executing \n".
	$request);
	}
	return;
	}

	my $have_read_studentsgroups_table = 0;
	my %groupids_by_studentid;

	sub get_students_groupids {
	my ($student_id) = @_;
	if (! $have_read_studentsgroups_table) {
	my @Result = &Apache::lonmysql::get_rows($students_groups_table);
	foreach (@Result) {
	push(@{$groupids_by_studentid{$_->[0]}},$_->[1]);
	}
	$have_read_studentsgroups_table = 1;
	}
	if (! exists($groupids_by_studentid{$student_id})) {
	&populate_students_groups_table();
	undef(%groupids_by_studentid);
	my @Result = &Apache::lonmysql::get_rows($students_groups_table);
	foreach (@Result) {
	push(@{$groupids_by_studentid{$_->[0]}},$_->[1]);
	}
	}
	if (exists($groupids_by_studentid{$student_id})) {
	if (ref($groupids_by_studentid{$student_id}) eq 'ARRAY') {
	return @{$groupids_by_studentid{$student_id}};
	}
	}
	return undef; # error
	}


	sub populate_students_groups_table {
	my ($courseid) = @_;
	if (! defined($courseid)) {
	$courseid = $env{'request.course.id'};
	}
	#
	&setup_table_names($courseid);
	&init_dbs($courseid,0);
	my $dbh = &Apache::lonmysql::get_dbh();
	my $request = 'INSERT IGNORE INTO '.$students_groups_table.
	"(student_id,group_id) VALUES ";
	my $cdom = $env{'course.'.$courseid.'.domain'};
	my $cnum = $env{'course.'.$courseid.'.num'};
	my ($classlist,$keylist) = &get_classlist($cdom,$cnum);
	my ($classgroups,$studentgroups) = &get_group_memberships($classlist,
	$keylist,
	$cdom,$cnum);
	my $record_count = 0;
	foreach my $student (sort(keys(%{$classgroups}))) {
	my $student_id = &get_student_id(split(':',$student));
	my @studentsgroups = &get_students_groups($student,'Active',$classgroups);
	if (@studentsgroups < 1) {
	@studentsgroups = ('none');
	}
	foreach my $groupname (@studentsgroups) {
	my $group_id = &get_group_id($groupname);
	$request .= "('".$student_id."','".$group_id."'),";
	$record_count++;
	}
	}
	return if ($record_count == 0);
	chop($request);
	$dbh->do($request);
	if ($dbh->err()) {
	&Apache::lonnet::logthis("error ".$dbh->errstr().
	" occured executing \n".
	$request);
	}
	return;
	}

################################################	################################################
################################################	################################################

Line 920 sub clear_internal_caches {	Line 1080 sub clear_internal_caches {
$have_read_student_table = 0;	$have_read_student_table = 0;
undef(%ids_by_student);	undef(%ids_by_student);
undef(%students_by_id);	undef(%students_by_id);
	$have_read_groupnames_table = 0;
	undef(%ids_by_groupname);
	}


	################################################
	################################################

	sub symb_is_for_task {
	my ($symb) = @_;
	return ($symb =~ /\.task$/);
}	}

################################################	################################################
Line 967 sub update_full_student_data {	Line 1138 sub update_full_student_data {
&setup_table_names($courseid);	&setup_table_names($courseid);
#	#
my $student_id = &get_student_id($sname,$sdom);	my $student_id = &get_student_id($sname,$sdom);
	my @group_ids = &get_students_groupids($student_id);
my $student = $sname.':'.$sdom;	my $student = $sname.':'.$sdom;
#	#
my $returnstatus = 'okay';	my $returnstatus = 'okay';
#	#
# Download students data	# Download students data
my $time_of_retrieval = time;	my $time_of_retrieval = time;
my @tmp = &Apache::lonnet::dump($courseid,$sdom,$sname);	my @tmp = &Apache::lonnet::dumpstore($courseid,$sdom,$sname);
if (@tmp && $tmp[0] =~ /^error/) {	if (@tmp && $tmp[0] =~ /^error/) {
$returnstatus = 'error retrieving full student data';	$returnstatus = 'error retrieving full student data';
return $returnstatus;	return $returnstatus;
Line 1013 sub update_full_student_data {	Line 1185 sub update_full_student_data {
next;	next;
} elsif ($parameter eq 'version') {	} elsif ($parameter eq 'version') {
next;	next;
} elsif ($parameter =~ /^resource\.(.*)\.(tries\|	} elsif (&symb_is_for_task($symb)) {
	next if ($parameter !~ /^resource\.(.*)\.(award\|
	awarded\|
	solved\|
	submission\|
	portfiles\|
	status\|
	version\|
	regrader)\s*$/x);
	my ($version_and_part_id, $field) = ($1,$2);

	next if ($version_and_part_id !~ /\./
	&& $field ne 'regrader' && $field ne 'version');

	my ($version, $part, $instance) =
	split(/\./,$version_and_part_id);

	#skip and instance dimension or criteria specific data
	next if (defined($instance)
	&& $instance ne $field
	&& $instance ne 'bridgetask');

	if (!defined($part)) {
	$part = $version;
	}
	my $resp_id = &get_part_id('0');
	my $part_id = &get_part_id($part);

	if ($field eq 'version') {
	# for tasks each version is an attempt at it thus
	# version -> tries
	$partdata->{$symb_id}{$part_id}{$transaction}{'tries'}=
	$value;
	# at new version time the record gets reset thus adding a
	# virtual response awarddetail of 'new_version'
	$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'response_specific'}='status';
	$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'response_specific_value'}='new_version';

	} elsif ($field eq 'award' \|\| $field eq 'awarded'
	\|\| $field eq 'solved') {
	$partdata->{$symb_id}{$part_id}{$transaction}{$field}=
	$value;
	} elsif ($field eq 'portfiles') {
	# tasks only accepts portfolio submissions
	$value = $dbh->quote($value);
	$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'submission'}=$value;
	} elsif ($field eq 'status') {
	$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'response_specific'}=$field;
	$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'response_specific_value'}=$value;
	} elsif ($field eq 'regrader') {
	$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'response_specific_2'}=$field;
	$respdata->{$symb_id}{$part_id}{$resp_id}{$transaction}{'response_specific_value_2'}=$value;
	}
	} elsif ($parameter =~ /^resource\.(.*)\.(tries\|
award\|	award\|
awarded\|	awarded\|
previous\|	previous\|
Line 1111 sub update_full_student_data {	Line 1336 sub update_full_student_data {
$transaction,	$transaction,
$data->{'awarddetail'},	$data->{'awarddetail'},
$data->{'response_specific'},	$data->{'response_specific'},
$data->{'response_specific_value'}).	$data->{'response_specific_value'},
	$data->{'response_specific_2'},
	$data->{'response_specific_value_2'}).
"',".$submission."),";	"',".$submission."),";
$store_rows++;	$store_rows++;
}	}
Line 1194 sub update_student_data {	Line 1421 sub update_student_data {
&setup_table_names($courseid);	&setup_table_names($courseid);
#	#
my $student_id = &get_student_id($sname,$sdom);	my $student_id = &get_student_id($sname,$sdom);
	my @group_ids = &get_students_groupids($student_id);
my $student = $sname.':'.$sdom;	my $student = $sname.':'.$sdom;
#	#
my $returnstatus = 'okay';	my $returnstatus = 'okay';
Line 1245 sub store_student_data {	Line 1473 sub store_student_data {
my ($sname,$sdom,$courseid,$student_data) = @_;	my ($sname,$sdom,$courseid,$student_data) = @_;
#	#
my $student_id = &get_student_id($sname,$sdom);	my $student_id = &get_student_id($sname,$sdom);
	my @group_ids = &get_students_groupids($student_id);
my $student = $sname.':'.$sdom;	my $student = $sname.':'.$sdom;
#	#
my $returnstatus = 'okay';	my $returnstatus = 'okay';
Line 1290 sub store_student_data {	Line 1519 sub store_student_data {
my %stored;	my %stored;
while (my ($parameter,$value) = each(%$param_hash)) {	while (my ($parameter,$value) = each(%$param_hash)) {
next if ($parameter !~ /^resource\.(.*)\.(solved\|awarded)$/);	next if ($parameter !~ /^resource\.(.*)\.(solved\|awarded)$/);
my $part = $1;	my $part = $1;
	my $which = $2;
next if ($part =~ /\./);	next if ($part =~ /\./);
next if (exists($stored{$part}));	next if (exists($stored{$part}));
$stored{$part}++;	$stored{$part}++;
#	#
my $part_id = &get_part_id($part);	my $part_id = &get_part_id($part);
next if (!defined($part_id));	next if (!defined($part_id));
my $solved = $value;
my $tries = $param_hash->{'resource.'.$part.'.tries'};	my ($solved,$awarded);
my $awarded = $param_hash->{'resource.'.$part.'.awarded'};	if ($which eq 'solved') {
	$solved = $value;
	$awarded = $param_hash->{'resource.'.$part.'.awarded'};
	} else {
	$solved = $param_hash->{'resource.'.$part.'.solved'};
	$awarded = $value;
	}
my $award = $param_hash->{'resource.'.$part.'.award'};	my $award = $param_hash->{'resource.'.$part.'.award'};
my $awarddetail = $param_hash->{'resource.'.$part.'.awarddetail'};	my $awarddetail = $param_hash->{'resource.'.$part.'.awarddetail'};
my $timestamp = $param_hash->{'timestamp'};	my $timestamp = $param_hash->{'timestamp'};
	my $tries = $param_hash->{'resource.'.$part.'.tries'};
	if (&symb_is_for_task($current_symb)) {
	$tries = $param_hash->{'resource.'.$part.'.version'};
	}
#	#
$solved = '' if (! defined($solved));	$solved = '' if (! defined($solved));
$tries = '' if (! defined($tries));	$tries = '' if (! defined($tries));
Line 1368 sub ensure_tables_are_set_up {	Line 1608 sub ensure_tables_are_set_up {
#	#
# if the tables do not exist, make them	# if the tables do not exist, make them
my @CurrentTable = &Apache::lonmysql::tables_in_db();	my @CurrentTable = &Apache::lonmysql::tables_in_db();
my ($found_symb,$found_student,$found_part,	my ($found_symb,$found_student,$found_groups,$found_groupnames,$found_part,
$found_performance,$found_parameters,$found_fulldump_part,	$found_performance,$found_parameters,$found_fulldump_part,
$found_fulldump_response,$found_fulldump_timestamp,	$found_fulldump_response,$found_fulldump_timestamp,
$found_weight);	$found_weight);
foreach (@CurrentTable) {	foreach (@CurrentTable) {
$found_symb = 1 if ($_ eq $symb_table);	$found_symb = 1 if ($_ eq $symb_table);
$found_student = 1 if ($_ eq $student_table);	$found_student = 1 if ($_ eq $student_table);
	$found_groups = 1 if ($_ eq $students_groups_table);
	$found_groupnames = 1 if ($_ eq $groupnames_table);
$found_part = 1 if ($_ eq $part_table);	$found_part = 1 if ($_ eq $part_table);
$found_performance = 1 if ($_ eq $performance_table);	$found_performance = 1 if ($_ eq $performance_table);
$found_parameters = 1 if ($_ eq $parameters_table);	$found_parameters = 1 if ($_ eq $parameters_table);
Line 1428 sub ensure_current_data {	Line 1670 sub ensure_current_data {
$Apache::lonnet::perlvar{'lonUsersDir'});	$Apache::lonnet::perlvar{'lonUsersDir'});
#	#
my $student_id = &get_student_id($sname,$sdom);	my $student_id = &get_student_id($sname,$sdom);
	my @group_ids = &get_students_groupids($student_id);
my @Result = &Apache::lonmysql::get_rows($student_table,	my @Result = &Apache::lonmysql::get_rows($student_table,
"student_id ='$student_id'");	"student_id ='$student_id'");
my $data = undef;	my $data = undef;
Line 1476 sub ensure_current_full_data {	Line 1719 sub ensure_current_full_data {
$Apache::lonnet::perlvar{'lonUsersDir'});	$Apache::lonnet::perlvar{'lonUsersDir'});
#	#
my $student_id = &get_student_id($sname,$sdom);	my $student_id = &get_student_id($sname,$sdom);
	my @group_ids = &get_students_groupids($student_id);
my @Result = &Apache::lonmysql::get_rows($student_table,	my @Result = &Apache::lonmysql::get_rows($student_table,
"student_id ='$student_id'");	"student_id ='$student_id'");
my $updatetime;	my $updatetime;
Line 1691 populated and all local caching variable	Line 1935 populated and all local caching variable
properly. This means you need to call &ensure_current_data for	properly. This means you need to call &ensure_current_data for
the students you are concerned with prior to calling this routine.	the students you are concerned with prior to calling this routine.

Inputs: $Sections, $status, $symb, $part, $courseid, $starttime, $endtime	Inputs: $Sections, Groups, $status, $symb, $part, $courseid, $starttime,
	$endtime

=over 4	=over 4

=item $Sections Array ref containing section names for students.	=item $Sections Array ref containing section names for students.
'all' is allowed to be the first (and only) item in the array.	'all' is allowed to be the first (and only) item in the array.

	=item $Groups Array ref containing group names for students.
	'all' is allowed to be the first (and only) item in the array.

=item $status String describing the status of students	=item $status String describing the status of students

=item $symb is the symb for the problem.	=item $symb is the symb for the problem.
Line 1744 able to answer it correctly.	Line 1992 able to answer it correctly.
################################################	################################################
################################################	################################################
sub get_problem_statistics {	sub get_problem_statistics {
my ($Sections,$status,$symb,$part,$courseid,$starttime,$endtime) = @_;	my ($Sections,$Groups,$status,$symb,$part,$courseid,$starttime,$endtime) = @_;
return if (! defined($symb) \|\| ! defined($part));	return if (! defined($symb) \|\| ! defined($part));
$courseid = $env{'request.course.id'} if (! defined($courseid));	$courseid = $env{'request.course.id'} if (! defined($courseid));
#	#
Line 1768 sub get_problem_statistics {	Line 2016 sub get_problem_statistics {
(defined($status) && lc($status) ne 'any')) {	(defined($status) && lc($status) ne 'any')) {
$request .= 'NATURAL LEFT JOIN '.$student_table.' AS b ';	$request .= 'NATURAL LEFT JOIN '.$student_table.' AS b ';
}	}
	my ($groups_join,$group_limits) = &limit_by_group($Groups,'b','c','d');
	if (defined($groups_join)) {
	$request .= $groups_join;
	}
$request .= ' WHERE a.symb_id='.$symb_id.' AND a.part_id='.$part_id;	$request .= ' WHERE a.symb_id='.$symb_id.' AND a.part_id='.$part_id;
#	#
# Limit the students included to those specified	# Limit the students included to those specified
Line 1793 sub get_problem_statistics {	Line 2045 sub get_problem_statistics {
if (defined($time_requirements)) {	if (defined($time_requirements)) {
$request .= ' AND '.$time_requirements;	$request .= ' AND '.$time_requirements;
}	}
	# Limit by group, as required
	if (defined($group_limits)) {
	$request .= ' AND '.$group_limits;
	}
#	#
# Finally, execute the request to create the temporary table	# Finally, execute the request to create the temporary table
$dbh->do($request);	$dbh->do($request);
Line 2013 sub limit_by_section_and_status {	Line 2269 sub limit_by_section_and_status {
join(' OR ', map { $tablename.".section='".$_."'" } @$Sections	join(' OR ', map { $tablename.".section='".$_."'" } @$Sections
).')';	).')';
}	}
#
my $enrollment_requirements=undef;	my $enrollment_requirements=undef;
if (defined($enrollment) && $enrollment ne 'Any') {	if (defined($enrollment) && $enrollment ne 'Any') {
$enrollment_requirements = $tablename.".status='".$enrollment."'";	$enrollment_requirements = $tablename.".status='".$enrollment."'";
Line 2023 sub limit_by_section_and_status {	Line 2278 sub limit_by_section_and_status {

######################################################	######################################################
######################################################	######################################################

	=pod

	=item &limit_by_group

	Build SQL LEFT JOIN statement to include students_groups and groupnames tables and SQL WHERE condition which limits the data collected by group.

	Inputs: $Groups (array ref)
	$stutable The name of the table which holds the student data.
	$grptable The name of the table which maps group_id to groupname.
	$stugrptab The name of the table which holds student group affiliations.
	Returns: $groups_join,$group_limits
	$groups_join JOIN part of SQL statement (to include group related tables)
	$group_limits SQL WHERE condition limiting to requested groups
	=cut

	sub limit_by_group {
	my ($Groups,$stutable,$grptable,$stugrptab) = @_;
	my $groups_join = undef;
	my $group_limits = undef;
	if ( (defined($Groups) && $Groups->[0] ne 'all')) {
	$groups_join =
	' LEFT JOIN '.$students_groups_table.
	' AS '.$stugrptab.' ON '.
	$stugrptab.'.student_id = '.$stutable.'.student_id'.
	' LEFT JOIN '.$groupnames_table.
	' AS '.$grptable.' ON '.
	$stugrptab.'.group_id = '.$grptable.'.group_id ';
	$group_limits =
	' ('.
	join(' OR ', map { "$grptable.groupname='".$_."'" } @$Groups
	).')';
	}
	return ($groups_join,$group_limits);
	}

=pod	=pod

Line 2031 sub limit_by_section_and_status {	Line 2321 sub limit_by_section_and_status {
Inputs:	Inputs:
$resources: array ref of hash ref. Each hash ref needs key 'symb'.	$resources: array ref of hash ref. Each hash ref needs key 'symb'.
$Sections: array ref of sections to include,	$Sections: array ref of sections to include,
	$Groups: array ref of groups to include.
$enrollment: string,	$enrollment: string,
$courseid (may be omitted)	$courseid (may be omitted)
	$starttime (may be omitted)
	$endtime (may be omitted)
	$has_award_for (may be omitted)

Returns; An array of arrays. The sub arrays contain a student name and	Returns; An array of arrays. The sub arrays contain a student name and
their score on the resources.	their score on the resources. $starttime and $endtime constrain the
	list to awards obtained during the given time limits. $has_score_on
	constrains the list to those students who at least attempted the
	resource identified by the given symb, which is used to filter out
	such students for statistics that would be adversely affected by such
	students.

=cut	=cut

Line 2045 sub RNK_student { return 0; };	Line 2344 sub RNK_student { return 0; };
sub RNK_score { return 1; };	sub RNK_score { return 1; };

sub rank_students_by_scores_on_resources {	sub rank_students_by_scores_on_resources {
my ($resources,$Sections,$enrollment,$courseid,$starttime,$endtime) = @_;	my ($resources,$Sections,$Groups,$enrollment,$courseid,$starttime,$endtime,
	$has_award_for) = @_;
return if (! defined($resources) \|\| ! ref($resources) eq 'ARRAY');	return if (! defined($resources) \|\| ! ref($resources) eq 'ARRAY');
if (! defined($courseid)) {	if (! defined($courseid)) {
$courseid = $env{'request.course.id'};	$courseid = $env{'request.course.id'};
Line 2055 sub rank_students_by_scores_on_resources	Line 2355 sub rank_students_by_scores_on_resources
my $dbh = &Apache::lonmysql::get_dbh();	my $dbh = &Apache::lonmysql::get_dbh();
my ($section_limits,$enrollment_limits)=	my ($section_limits,$enrollment_limits)=
&limit_by_section_and_status($Sections,$enrollment,'b');	&limit_by_section_and_status($Sections,$enrollment,'b');
	my ($groups_join,$group_limits) = &limit_by_group($Groups,'b','c','d');
my $symb_limits = '('.join(' OR ',map {'a.symb_id='.&get_symb_id($_);	my $symb_limits = '('.join(' OR ',map {'a.symb_id='.&get_symb_id($_);
} @$resources	} @$resources
).')';	).')';
	my ($award_col, $award_join, $award_clause) = ('', '', '');
	if ($has_award_for) {
	my $resource_id = &get_symb_id($has_award_for);
	$award_col = ", perf.awarded";
	$award_join = "LEFT JOIN $performance_table AS perf ON perf.symb_id"
	." = $resource_id AND perf.student_id = b.student_id ";
	$award_clause = "AND perf.awarded IS NOT NULL";
	}
my $time_limits = &limit_by_start_end_time($starttime,$endtime,'a');	my $time_limits = &limit_by_start_end_time($starttime,$endtime,'a');
my $request = 'SELECT b.student,SUM(a.awarded*w.weight) AS score FROM '.	my $request = "SELECT b.student,SUM(a.awarded*w.weight) AS score "
$performance_table.' AS a '.	."$award_col FROM $performance_table AS a ".
'NATURAL LEFT JOIN '.$weight_table.' AS w '.	"NATURAL LEFT JOIN $weight_table AS w ".
'LEFT JOIN '.$student_table.' AS b ON a.student_id=b.student_id '.	"LEFT JOIN $student_table AS b ON a.student_id=b.student_id ".
'WHERE ';	"$award_join $groups_join ";
	my $limits;
if (defined($section_limits)) {	if (defined($section_limits)) {
$request .= $section_limits.' AND ';	$limits .= $section_limits.' AND ';
}	}
if (defined($enrollment_limits)) {	if (defined($enrollment_limits)) {
$request .= $enrollment_limits.' AND ';	$limits .= $enrollment_limits.' AND ';
}	}
if (defined($time_limits)) {	if (defined($time_limits)) {
$request .= $time_limits.' AND ';	$limits .= $time_limits.' AND ';
}	}
if ($symb_limits ne '()') {	if ($symb_limits ne '()') {
$request .= $symb_limits.' AND ';	$limits .= $symb_limits.' AND ';
}	}
$request =~ s/( AND )$//; # Remove extra conjunction	if (defined($group_limits)) {
$request =~ s/( WHERE )$//; # In case there were no limits placed on it	$limits .= $group_limits.' AND ';
$request .= ' GROUP BY a.student_id ORDER BY score';	}
	if ($limits) {
	$limits =~ s/( AND )$//; # Remove extra conjunction
	$request .= "WHERE $limits";
	}
	$request .= " $award_clause GROUP BY a.student_id ORDER BY score";
#&Apache::lonnet::logthis('request = '.$/.$request);	#&Apache::lonnet::logthis('request = '.$/.$request);
my $sth = $dbh->prepare($request);	my $sth = $dbh->prepare($request) or die "Can't prepare $request";
$sth->execute();	$sth->execute();
my $rows = $sth->fetchall_arrayref();	my $rows = $sth->fetchall_arrayref();
return ($rows);	return ($rows);
Line 2170 Returns: minimum, maximum, mean, s.d., n	Line 2485 Returns: minimum, maximum, mean, s.d., n
########################################################	########################################################
########################################################	########################################################
sub score_stats {	sub score_stats {
my ($Sections,$enrollment,$symbs,$starttime,$endtime,$courseid)=@_;	my ($Sections,$Groups,$enrollment,$symbs,$starttime,$endtime,$courseid)=@_;
if (! defined($courseid)) {	if (! defined($courseid)) {
$courseid = $env{'request.course.id'};	$courseid = $env{'request.course.id'};
}	}
Line 2180 sub score_stats {	Line 2495 sub score_stats {
#	#
my ($section_limits,$enrollment_limits)=	my ($section_limits,$enrollment_limits)=
&limit_by_section_and_status($Sections,$enrollment,'b');	&limit_by_section_and_status($Sections,$enrollment,'b');
	my ($groups_join,$group_limits) = &limit_by_group($Groups,'b','c','d');
my $time_limits = &limit_by_start_end_time($starttime,$endtime,'a');	my $time_limits = &limit_by_start_end_time($starttime,$endtime,'a');
my @Symbids = map { &get_symb_id($_); } @{$symbs};	my @Symbids = map { &get_symb_id($_); } @{$symbs};
#	#
Line 2194 sub score_stats {	Line 2510 sub score_stats {
$performance_table.' AS a '.	$performance_table.' AS a '.
'NATURAL LEFT JOIN '.$weight_table.' AS w '.	'NATURAL LEFT JOIN '.$weight_table.' AS w '.
'LEFT JOIN '.$student_table.' AS b ON a.student_id=b.student_id '.	'LEFT JOIN '.$student_table.' AS b ON a.student_id=b.student_id '.
'WHERE ('.$symb_restriction.')';	$groups_join;
	my $limit = ' WHERE ('.$symb_restriction.')';
if ($time_limits) {	if ($time_limits) {
$request .= ' AND '.$time_limits;	$limit .= ' AND '.$time_limits;
}	}
if ($section_limits) {	if ($section_limits) {
$request .= ' AND '.$section_limits;	$limit .= ' AND '.$section_limits;
}	}
if ($enrollment_limits) {	if ($enrollment_limits) {
$request .= ' AND '.$enrollment_limits;	$limit .= ' AND '.$enrollment_limits;
}	}
$request .= ' GROUP BY a.student_id';	if ($group_limits) {
	$limit .= ' AND '.$group_limits;
	}
	$request .= $limit.' GROUP BY a.student_id';
# &Apache::lonnet::logthis('request = '.$/.$request);	# &Apache::lonnet::logthis('request = '.$/.$request);
my $sth = $dbh->prepare($request);	my $sth = $dbh->prepare($request);
$sth->execute();	$sth->execute();
Line 2229 sub score_stats {	Line 2549 sub score_stats {

=item &count_stats	=item &count_stats

Inputs: $Sections, $enrollment, $symbs, $starttime,	Inputs: $Sections, $Groups, $enrollment, $symbs, $starttime,
$endtime, $courseid	$endtime, $courseid

$Sections, $enrollment, $starttime, $endtime, and $courseid are the same as	$Sections, $Groups $enrollment, $starttime, $endtime, and $courseid are the
elsewhere in this module.	same as elsewhere in this module.
$symbs is an array ref of symbs	$symbs is an array ref of symbs

Returns: minimum, maximum, mean, s.d., and number of students	Returns: minimum, maximum, mean, s.d., and number of students
Line 2244 Returns: minimum, maximum, mean, s.d., a	Line 2564 Returns: minimum, maximum, mean, s.d., a
########################################################	########################################################
########################################################	########################################################
sub count_stats {	sub count_stats {
my ($Sections,$enrollment,$symbs,$starttime,$endtime,$courseid)=@_;	my ($Sections,$Groups,$enrollment,$symbs,$starttime,$endtime,$courseid)=@_;
if (! defined($courseid)) {	if (! defined($courseid)) {
$courseid = $env{'request.course.id'};	$courseid = $env{'request.course.id'};
}	}
Line 2254 sub count_stats {	Line 2574 sub count_stats {
#	#
my ($section_limits,$enrollment_limits)=	my ($section_limits,$enrollment_limits)=
&limit_by_section_and_status($Sections,$enrollment,'b');	&limit_by_section_and_status($Sections,$enrollment,'b');
	my ($groups_join,$group_limits) = &limit_by_group($Groups,'b','c','d');
my $time_limits = &limit_by_start_end_time($starttime,$endtime,'a');	my $time_limits = &limit_by_start_end_time($starttime,$endtime,'a');
my @Symbids = map { &get_symb_id($_); } @{$symbs};	my @Symbids = map { &get_symb_id($_); } @{$symbs};
#	#
Line 2267 sub count_stats {	Line 2588 sub count_stats {
'SUM(a.awarded) AS count FROM '.	'SUM(a.awarded) AS count FROM '.
$performance_table.' AS a '.	$performance_table.' AS a '.
'LEFT JOIN '.$student_table.' AS b ON a.student_id=b.student_id '.	'LEFT JOIN '.$student_table.' AS b ON a.student_id=b.student_id '.
'WHERE ('.$symb_restriction.')';	$groups_join;
	my $limit = ' WHERE ('.$symb_restriction.')';
if ($time_limits) {	if ($time_limits) {
$request .= ' AND '.$time_limits;	$limit .= ' AND '.$time_limits;
}	}
if ($section_limits) {	if ($section_limits) {
$request .= ' AND '.$section_limits;	$limit .= ' AND '.$section_limits;
}	}
if ($enrollment_limits) {	if ($enrollment_limits) {
$request .= ' AND '.$enrollment_limits;	$limit .= ' AND '.$enrollment_limits;
}	}
$request .= ' GROUP BY a.student_id';	if ($group_limits) {
	$limit .= ' AND '.$group_limits;
	}
	$request .= $limit.' GROUP BY a.student_id';
# &Apache::lonnet::logthis('request = '.$/.$request);	# &Apache::lonnet::logthis('request = '.$/.$request);
my $sth = $dbh->prepare($request);	my $sth = $dbh->prepare($request);
$sth->execute();	$sth->execute();
Line 2331 sub get_student_data {	Line 2656 sub get_student_data {
}	}
}	}

sub RD_student_id { return 0; }	sub RD_student_id { return 0; }
sub RD_awarddetail { return 1; }	sub RD_awarddetail { return 1; }
sub RD_response_eval { return 2; }	sub RD_response_eval { return 2; }
sub RD_submission { return 3; }	sub RD_response_eval_2 { return 3; }
sub RD_timestamp { return 4; }	sub RD_submission { return 4; }
sub RD_tries { return 5; }	sub RD_timestamp { return 5; }
sub RD_sname { return 6; }	sub RD_tries { return 6; }
	sub RD_sname { return 7; }

sub get_response_data {	sub get_response_data {
my ($Sections,$enrollment,$symb,$response,$courseid) = @_;	my ($Sections,$Groups,$enrollment,$symb,$response,$courseid) = @_;
return undef if (! defined($symb) \|\|	return undef if (! defined($symb) \|\|
! defined($response));	! defined($response));
$courseid = $env{'request.course.id'} if (! defined($courseid));	$courseid = $env{'request.course.id'} if (! defined($courseid));
Line 2362 sub get_response_data {	Line 2688 sub get_response_data {
#	#
my ($student_requirements,$enrollment_requirements) =	my ($student_requirements,$enrollment_requirements) =
&limit_by_section_and_status($Sections,$enrollment,'d');	&limit_by_section_and_status($Sections,$enrollment,'d');
	my ($groups_join,$group_limits) = &limit_by_group($Groups,'d','e','f');
my $request = 'SELECT '.	my $request = 'SELECT '.
'a.student_id, a.awarddetail, a.response_specific_value, '.	'a.student_id, a.awarddetail, a.response_specific_value, '.
'a.submission, b.timestamp, c.tries, d.student '.	'a.response_specific_value_2, a.submission, b.timestamp, '.
	'c.tries, d.student '.
'FROM '.$fulldump_response_table.' AS a '.	'FROM '.$fulldump_response_table.' AS a '.
'LEFT JOIN '.$fulldump_timestamp_table.' AS b '.	'LEFT JOIN '.$fulldump_timestamp_table.' AS b '.
'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '.	'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '.
Line 2374 sub get_response_data {	Line 2702 sub get_response_data {
'a.part_id=c.part_id AND a.transaction = c.transaction '.	'a.part_id=c.part_id AND a.transaction = c.transaction '.
'LEFT JOIN '.$student_table.' AS d '.	'LEFT JOIN '.$student_table.' AS d '.
'ON a.student_id=d.student_id '.	'ON a.student_id=d.student_id '.
'WHERE '.	$groups_join;
	my $limit = ' WHERE '.
'a.symb_id='.$symb_id.' AND a.response_id='.$response_id;	'a.symb_id='.$symb_id.' AND a.response_id='.$response_id;
if (defined($student_requirements) \|\| defined($enrollment_requirements)) {	if (defined($student_requirements)) {
$request .= ' AND ';	$limit .= ' AND '.$student_requirements;
if (defined($student_requirements)) {	}
$request .= $student_requirements.' AND ';	if (defined($enrollment_requirements)) {
}	$limit .= ' AND '.$enrollment_requirements;
if (defined($enrollment_requirements)) {
$request .= $enrollment_requirements.' AND ';
}
$request =~ s/( AND )$//;
}	}
$request .= ' ORDER BY b.timestamp';	if (defined($group_limits)) {
	$limit .= ' AND '.$group_limits;
	}
	$request .= $limit.' ORDER BY b.timestamp';
# &Apache::lonnet::logthis("request =\n".$request);	# &Apache::lonnet::logthis("request =\n".$request);
my $sth = $dbh->prepare($request);	my $sth = $dbh->prepare($request);
$sth->execute();	$sth->execute();
Line 2406 sub get_response_data {	Line 2734 sub get_response_data {
}	}


sub RDs_awarddetail { return 3; }	sub RDs_awarddetail { return 3; }
sub RDs_submission { return 2; }	sub RDs_submission { return 2; }
sub RDs_timestamp { return 1; }	sub RDs_timestamp { return 1; }
sub RDs_tries { return 0; }	sub RDs_tries { return 0; }
sub RDs_awarded { return 4; }	sub RDs_awarded { return 4; }
	sub RDs_response_eval { return 5; }
	sub RDs_response_eval_2 { return 6; }
	sub RDs_part_award { return 7; }

sub get_response_data_by_student {	sub get_response_data_by_student {
my ($student,$symb,$response,$courseid) = @_;	my ($student,$symb,$response,$courseid) = @_;
Line 2424 sub get_response_data_by_student {	Line 2755 sub get_response_data_by_student {
#	#
my $student_id = &get_student_id($student->{'username'},	my $student_id = &get_student_id($student->{'username'},
$student->{'domain'});	$student->{'domain'});
	my @group_ids = &get_students_groupids($student_id);
#	#
my $dbh = &Apache::lonmysql::get_dbh();	my $dbh = &Apache::lonmysql::get_dbh();
return undef if (! defined($dbh));	return undef if (! defined($dbh));
my $request = 'SELECT '.	my $request = 'SELECT '.
'c.tries, b.timestamp, a.submission, a.awarddetail, e.awarded '.	'c.tries, b.timestamp, a.submission, a.awarddetail, c.awarded, '.
	'a.response_specific_value, a.response_specific_value_2, c.award '.
'FROM '.$fulldump_response_table.' AS a '.	'FROM '.$fulldump_response_table.' AS a '.
'LEFT JOIN '.$fulldump_timestamp_table.' AS b '.	'LEFT JOIN '.$fulldump_timestamp_table.' AS b '.
'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '.	'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '.
Line 2469 sub RT_tries { return 2; }	Line 2802 sub RT_tries { return 2; }
sub RT_timestamp { return 3; }	sub RT_timestamp { return 3; }

sub get_response_time_data {	sub get_response_time_data {
my ($sections,$enrollment,$symb,$part,$courseid) = @_;	my ($sections,$groups,$enrollment,$symb,$part,$courseid) = @_;
return undef if (! defined($symb) \|\|	return undef if (! defined($symb) \|\|
! defined($part));	! defined($part));
$courseid = $env{'request.course.id'} if (! defined($courseid));	$courseid = $env{'request.course.id'} if (! defined($courseid));
Line 2490 sub get_response_time_data {	Line 2823 sub get_response_time_data {
return undef if (! defined($dbh));	return undef if (! defined($dbh));
my ($student_requirements,$enrollment_requirements) =	my ($student_requirements,$enrollment_requirements) =
&limit_by_section_and_status($sections,$enrollment,'d');	&limit_by_section_and_status($sections,$enrollment,'d');
	my ($groups_join,$group_limits) = &limit_by_group($groups,'d','e','f');
my $request = 'SELECT '.	my $request = 'SELECT '.
'a.student_id, a.awarded, a.tries, b.timestamp '.	'a.student_id, a.awarded, a.tries, b.timestamp '.
'FROM '.$fulldump_part_table.' AS a '.	'FROM '.$fulldump_part_table.' AS a '.
Line 2498 sub get_response_time_data {	Line 2832 sub get_response_time_data {
'a.transaction = b.transaction '.	'a.transaction = b.transaction '.
'LEFT JOIN '.$student_table.' as d '.	'LEFT JOIN '.$student_table.' as d '.
'ON a.student_id=d.student_id '.	'ON a.student_id=d.student_id '.
'WHERE '.	$groups_join;
	my $limit = ' WHERE '.
'a.symb_id='.$symb_id.' AND a.part_id='.$part_id;	'a.symb_id='.$symb_id.' AND a.part_id='.$part_id;
if (defined($student_requirements) \|\| defined($enrollment_requirements)) {	if (defined($student_requirements)) {
$request .= ' AND ';	$limit .= ' AND '.$student_requirements;
if (defined($student_requirements)) {	}
$request .= $student_requirements.' AND ';	if (defined($enrollment_requirements)) {
}	$limit .= ' AND '.$enrollment_requirements;
if (defined($enrollment_requirements)) {	}
$request .= $enrollment_requirements.' AND ';	if (defined($group_limits)) {
}	$limit .= ' AND '.$group_limits;
$request =~ s/( AND )$//;
}	}
$request .= ' ORDER BY b.timestamp';	$request .= $limit.' ORDER BY b.timestamp';
# &Apache::lonnet::logthis("request =\n".$request);	# &Apache::lonnet::logthis("request =\n".$request);
my $sth = $dbh->prepare($request);	my $sth = $dbh->prepare($request);
$sth->execute();	$sth->execute();
Line 2531 sub get_response_time_data {	Line 2865 sub get_response_time_data {

=pod	=pod

=item &get_student_scores($Sections,$Symbs,$enrollment,$courseid)	=item &get_student_scores($Sections,$Groups,$Symbs,$enrollment,$courseid)

=cut	=cut

################################################	################################################
################################################	################################################
sub get_student_scores {	sub get_student_scores {
my ($sections,$Symbs,$enrollment,$courseid,$starttime,$endtime) = @_;	my ($sections,$groups,$Symbs,$enrollment,$courseid,$starttime,$endtime) = @_;
$courseid = $env{'request.course.id'} if (! defined($courseid));	$courseid = $env{'request.course.id'} if (! defined($courseid));
&setup_table_names($courseid);	&setup_table_names($courseid);
my $dbh = &Apache::lonmysql::get_dbh();	my $dbh = &Apache::lonmysql::get_dbh();
Line 2560 sub get_student_scores {	Line 2894 sub get_student_scores {
my ($student_requirements,$enrollment_requirements) =	my ($student_requirements,$enrollment_requirements) =
&limit_by_section_and_status($sections,$enrollment,'b');	&limit_by_section_and_status($sections,$enrollment,'b');
#	#
	my ($groups_join,$group_limits) = &limit_by_group($groups,'b','d','e');
my $time_requirements = &limit_by_start_end_time($starttime,$endtime,'a');	my $time_requirements = &limit_by_start_end_time($starttime,$endtime,'a');
##	##
$request = 'CREATE TEMPORARY TABLE IF NOT EXISTS '.$tmptable.	$request = 'CREATE TEMPORARY TABLE IF NOT EXISTS '.$tmptable.
Line 2567 sub get_student_scores {	Line 2902 sub get_student_scores {
$performance_table.' AS a ';	$performance_table.' AS a ';
$request .= "LEFT JOIN ".$weight_table.' AS c ON a.symb_id=c.symb_id AND a.part_id=c.part_id ';	$request .= "LEFT JOIN ".$weight_table.' AS c ON a.symb_id=c.symb_id AND a.part_id=c.part_id ';
if (defined($student_requirements) \|\| defined($enrollment_requirements)) {	if (defined($student_requirements) \|\| defined($enrollment_requirements)) {
$request .= ' LEFT JOIN '.$student_table.' AS b ON a.student_id=b.student_id';	$request .= ' LEFT JOIN '.$student_table.' AS b ON a.student_id=b.student_id ';
	}
	if (defined($groups_join)) {
	$request .= $groups_join;
}	}
if (defined($symb_requirements) \|\|	if (defined($symb_requirements) \|\|
defined($student_requirements) \|\|	defined($student_requirements) \|\|
defined($enrollment_requirements) ) {	defined($enrollment_requirements) \|\|
	defined($group_limits) ) {
$request .= ' WHERE ';	$request .= ' WHERE ';
}	}
if (defined($symb_requirements)) {	if (defined($symb_requirements)) {
Line 2643 sub setup_table_names {	Line 2982 sub setup_table_names {
$have_read_student_table = 0;	$have_read_student_table = 0;
undef(%ids_by_student);	undef(%ids_by_student);
undef(%students_by_id);	undef(%students_by_id);
	$have_read_groupnames_table = 0;
	undef(%ids_by_groupname);
#	#
$current_course = $courseid;	$current_course = $courseid;
}	}
#	#
# Set up database names	# Set up database names
my $base_id = $courseid;	my $base_id = $courseid;
$symb_table = $base_id.'_'.'symb';	$symb_table = $base_id.'_'.'symb';
$part_table = $base_id.'_'.'part';	$part_table = $base_id.'_'.'part';
$student_table = $base_id.'_'.'student';	$student_table = $base_id.'_'.'student';
$performance_table = $base_id.'_'.'performance';	$groupnames_table = $base_id.'_'.'groupnames';
$parameters_table = $base_id.'_'.'parameters';	$students_groups_table = $base_id.'_'.'studentgroups';
	$performance_table = $base_id.'_'.'performance';
	$parameters_table = $base_id.'_'.'parameters';
$fulldump_part_table = $base_id.'_'.'partdata';	$fulldump_part_table = $base_id.'_'.'partdata';
$fulldump_response_table = $base_id.'_'.'responsedata';	$fulldump_response_table = $base_id.'_'.'responsedata';
$fulldump_timestamp_table = $base_id.'_'.'timestampdata';	$fulldump_timestamp_table = $base_id.'_'.'timestampdata';
Line 2663 sub setup_table_names {	Line 3006 sub setup_table_names {
$symb_table,	$symb_table,
$part_table,	$part_table,
$student_table,	$student_table,
	$groupnames_table,
	$students_groups_table,
$performance_table,	$performance_table,
$parameters_table,	$parameters_table,
$fulldump_part_table,	$fulldump_part_table,
Line 2797 sub get_classlist {	Line 3142 sub get_classlist {
}	}
}	}

	sub get_group_memberships {
	my ($classlist,$keylist,$cdom,$cnum) = @_;

	return ({},{}) if (!ref($classlist) \|\| !ref($keylist));

	my $cid = $cdom.'_'.$cnum;
	if (!defined($cdom) \|\| !defined($cnum)) {
	$cid = $env{'request.course.id'};
	$cdom = $env{'course.'.$cid.'.domain'};
	$cnum = $env{'course.'.$cid.'.num'};
	}
	my (%classgroups,%studentgroups);
	my $now = time;
	my $access_end = $env{'course.'.$cid.'.default_enrollment_end_date'};
	my %curr_groups =&Apache::longroup::coursegroups($cdom,$cnum);
	if (%curr_groups) {
	my $grpindex = scalar(@{$keylist});
	my %groupmemberhash =
	&Apache::lonnet::get_group_membership($cdom,$cnum);
	foreach my $student (keys(%{$classlist})) {
	%{$classgroups{$student}} = ();
	my $hasgroup = 0;
	foreach my $status ('previous','future','active','aftercourse') {
	%{$classgroups{$student}{$status}} = ();
	}
	foreach my $group (keys(%curr_groups)) {
	if (defined($groupmemberhash{$group.':'.$student})) {
	my ($end,$start) = split(/:/,$groupmemberhash{$group.':'.
	$student});
	if ($start == -1) {
	next;
	} else {
	$studentgroups{$group} ++;
	$hasgroup = 1;
	if ($end && $end < $now) {
	$classgroups{$student}{'previous'}{$group} =
	$groupmemberhash{$group.':'.$student};
	if ($classlist->{$student}[&CL_STATUS()] eq 'Expired') {
	if ($access_end && $access_end < $now) {
	if ($access_end - $end < 86400) {
	$classgroups{$student}{'aftercourse'}{$group} = $groupmemberhash{$group.':'.$student};
	}
	}
	}
	} elsif ($now > $start) {
	if (!$end \|\| $end > $now) {
	$classgroups{$student}{'active'}{$group} =
	$groupmemberhash{$group.':'.$student};
	}
	} else {
	$classgroups{$student}{'future'}{$group} =
	$groupmemberhash{$group.':'.$student};
	}
	}
	}
	}
	if (!$hasgroup) {
	$studentgroups{'none'} ++;
	} else {
	$classlist->{$student}->[$grpindex] = join(',',
	sort(keys(%{$classgroups{$student}{'active'}})));
	}
	}
	}
	return (\%classgroups,\%studentgroups);
	}

	sub get_students_groups {
	my ($student,$enrollment_status,$classgroups) = @_;
	my @studentsgroups = ();
	if (ref($$classgroups{$student}{'active'}) eq 'HASH') {
	push(@studentsgroups,keys(%{$$classgroups{$student}{'active'}}));
	}
	if ($enrollment_status eq 'Any') {
	foreach my $status ('previous','future') {
	if (ref($$classgroups{$student}{$status}) eq 'HASH') {
	push(@studentsgroups,keys(%{$$classgroups{$student}{$status}}));
	}
	}
	} else {
	if (ref($$classgroups{$student}{'aftercourse'}) eq 'HASH') {
	push(@studentsgroups,keys(%{$$classgroups{$student}{'aftercourse'}}));
	}
	}
	return @studentsgroups;
	}


# ----- END HELPER FUNCTIONS --------------------------------------------	# ----- END HELPER FUNCTIONS --------------------------------------------

1;	1;
__END__	__END__

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Removed from v.1.153
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	Added in v.1.172