loncom/interface/loncoursedata.pm - diff

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Diff for /loncom/interface/loncoursedata.pm between versions 1.141.2.2 and 1.175

version 1.141.2.2, 2005/04/19 21:41:17	version 1.175, 2006/08/10 21:07:01
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;
use GDBM_File;	use GDBM_File;
	use lib '/home/httpd/lib/perl/';
	use LONCAPA;

=pod	=pod

Line 66 and/or itself.	Line 68 and/or itself.

=cut	=cut

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

=pod

=item &get_sequence_assessment_data()

Use lonnavmaps to build a data structure describing the order and
assessment contents of each sequence in the current course.

The returned structure is a hash reference.

{ title => 'title',
symb => 'symb',
src => '/s/o/u/r/c/e',
type => (container\|assessment),
num_assess => 2, # only for container
parts => [11,13,15], # only for assessment
response_ids => [12,14,16], # only for assessment
contents => [........] # only for container
}

$hash->{'contents'} is a reference to an array of hashes of the same structure.

Also returned are array references to the sequences and assessments contained
in the course.


=cut

####################################################
####################################################
sub get_sequence_assessment_data {
my $fn=$ENV{'request.course.fn'};
##
## use navmaps
my $navmap = Apache::lonnavmaps::navmap->new();
if (!defined($navmap)) {
return 'Can not open Coursemap';
}
# We explicity grab the top level map because I am not sure we
# are pulling it from the iterator.
my $top_level_map = $navmap->getById('0.0');
#
my $iterator = $navmap->getIterator(undef, undef, undef, 1);
my $curRes = $iterator->next(); # Top level sequence
##
## Prime the pump
##
## We are going to loop until we run out of sequences/pages to explore for
## resources. This means we have to start out with something to look
## at.
my $title = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
my $symb = $top_level_map->symb();
my $src = $top_level_map->src();
my $randompick = $top_level_map->randompick();
#
my @Sequences;
my @Assessments;
my @Nested_Sequences = (); # Stack of sequences, keeps track of depth
my $top = { title => $title,
src => $src,
symb => $symb,
type => 'container',
num_assess => 0,
num_assess_parts => 0,
contents => [],
randompick => $randompick,
};
push (@Sequences,$top);
push (@Nested_Sequences, $top);
#
# We need to keep track of which sequences contain homework problems
#
my $previous_too;
my $previous;
while (scalar(@Nested_Sequences)) {
$previous_too = $previous;
$previous = $curRes;
$curRes = $iterator->next(1);
if (!$curRes) { last; }
my $currentmap = $Nested_Sequences[-1]; # Last one on the stack
if ($curRes == $iterator->BEGIN_MAP()) {
if (! ref($previous)) {
$previous = $previous_too;
}
if (! ref($previous)) {
next;
}
# get the map itself, instead of BEGIN_MAP
$title = $previous->compTitle;
$symb = $previous->symb();
$src = $previous->src();
$randompick = $previous->randompick();
my $newmap = { title => $title,
src => $src,
symb => $symb,
type => 'container',
num_assess => 0,
randompick => $randompick,
contents => [],
};
push (@{$currentmap->{'contents'}},$newmap); # this is permanent
push (@Sequences,$newmap);
push (@Nested_Sequences, $newmap); # this is a stack
next;
}
if ($curRes == $iterator->END_MAP()) {
pop(@Nested_Sequences);
next;
}
next if (! ref($curRes));
next if (! $curRes->is_problem() && $curRes->src() !~ /\.survey$/);
# Okay, from here on out we only deal with assessments
$title = $curRes->compTitle();
$symb = $curRes->symb();
$src = $curRes->src();
my $parts = $curRes->parts();
my %partdata;
foreach my $part (@$parts) {
my @Responses = $curRes->responseType($part);
my @Ids = $curRes->responseIds($part);
$partdata{$part}->{'ResponseTypes'}= \@Responses;
$partdata{$part}->{'ResponseIds'} = \@Ids;
$partdata{$part}->{'Survey'} = $curRes->is_survey($part);
# Count how many responses of each type there are in this part
foreach (@Responses) {
$partdata{$part}->{$_}++;
}
}
my $assessment = { title => $title,
src => $src,
symb => $symb,
type => 'assessment',
parts => $parts,
num_parts => scalar(@$parts),
partdata => \%partdata,
};
push(@Assessments,$assessment);
push(@{$currentmap->{'contents'}},$assessment);
$currentmap->{'num_assess'}++;
$currentmap->{'num_assess_parts'}+= scalar(@$parts);
}
return ($top,\@Sequences,\@Assessments);
}

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 245 sub LoadDiscussion {	Line 77 sub LoadDiscussion {

Returns a reference to a hash as described by $values. $values is	Returns a reference to a hash as described by $values. $values is
assumed to be the result of	assumed to be the result of
join(':',map {&Apache::lonnet::escape($_)} %orighash);	join(':',map {&escape($_)} %orighash);

This is a helper function for get_current_state.	This is a helper function for get_current_state.

Line 255 This is a helper function for get_curren	Line 87 This is a helper function for get_curren
################################################	################################################
sub make_into_hash {	sub make_into_hash {
my $values = shift;	my $values = shift;
my %tmp = map { &Apache::lonnet::unescape($_); }	my %tmp = map { &unescape($_); } split(':',$values);
split(':',$values);
return \%tmp;	return \%tmp;
}	}

Line 330 fifth are 'section', 'status' (enrollmen	Line 161 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 375 The response table holds data (documente	Line 218 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 441 my $current_course ='';	Line 285 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 539 sub init_dbs {	Line 385 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 637 sub init_dbs {	Line 513 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 768 sub init_dbs {	Line 648 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 778 sub init_dbs {	Line 670 sub init_dbs {

=item &delete_caches()	=item &delete_caches()

	This routine drops all the tables associated with a course from the
	MySQL database.

	Input: course id (optional, determined by environment if omitted)

	Returns: nothing

=cut	=cut

################################################	################################################
################################################	################################################
sub delete_caches {	sub delete_caches {
my $courseid = shift;	my $courseid = shift;
$courseid = $ENV{'request.course.id'} if (! defined($courseid));	$courseid = $env{'request.course.id'} if (! defined($courseid));
#	#
&setup_table_names($courseid);	&setup_table_names($courseid);
#	#
Line 1000 sub get_student {	Line 899 sub get_student {
sub populate_student_table {	sub populate_student_table {
my ($courseid) = @_;	my ($courseid) = @_;
if (! defined($courseid)) {	if (! defined($courseid)) {
$courseid = $ENV{'request.course.id'};	$courseid = $env{'request.course.id'};
}	}
#	#
&setup_table_names($courseid);	&setup_table_names($courseid);
Line 1008 sub populate_student_table {	Line 907 sub populate_student_table {
my $dbh = &Apache::lonmysql::get_dbh();	my $dbh = &Apache::lonmysql::get_dbh();
my $request = 'INSERT IGNORE INTO '.$student_table.	my $request = 'INSERT IGNORE INTO '.$student_table.
"(student,section,status) VALUES ";	"(student,section,status) VALUES ";
my $classlist = &get_classlist($courseid);	my $cdom = $env{'course.'.$courseid.'.domain'};
	my $cnum = $env{'course.'.$courseid.'.num'};
	my $classlist = &get_classlist($cdom,$cnum);
my $student_count=0;	my $student_count=0;
while (my ($student,$data) = each %$classlist) {	while (my ($student,$data) = each %$classlist) {
my ($section,$status) = ($data->[&CL_SECTION()],	my ($section,$status) = ($data->[&CL_SECTION()],
Line 1030 sub populate_student_table {	Line 931 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 1057 sub clear_internal_caches {	Line 1081 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$/);
	}

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

=pod	=pod

=item &update_full_student_data($sname,$sdom,$courseid)	=item &update_full_student_data($sname,$sdom,$courseid)
Line 1111 sub update_full_student_data {	Line 1145 sub update_full_student_data {
#	#
# 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 $returnstatus;
Line 1151 sub update_full_student_data {	Line 1185 sub update_full_student_data {
next;	next;
} elsif ($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 1249 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++;	$store_rows++;
}	}
Line 1354 sub update_student_data {	Line 1443 sub update_student_data {
#	#
# Set the students update time	# Set the students update time
if ($Results[0] eq 'okay') {	if ($Results[0] eq 'okay') {
&store_updatetime($student_id,$time_of_retrieval,$time_of_retrieval);	&store_updatetime($student_id,$time_of_retrieval);
}	}
#	#
return @Results;	return @Results;
Line 1410 sub store_student_data {	Line 1499 sub store_student_data {
# make sure the symb is set up properly	# make sure the symb is set up properly
my $symb_id = &get_symb_id($current_symb);	my $symb_id = &get_symb_id($current_symb);
#	#
# Load data into the tables	# Parameters
while (my ($parameter,$value) = each(%$param_hash)) {	while (my ($parameter,$value) = each(%$param_hash)) {
my $newstring;
if ($parameter !~ /(timestamp\|resource\.(.*)\.(solved\|tries\|awarded\|award\|awarddetail\|previous))/) {	if ($parameter !~ /(timestamp\|resource\.(.*)\.(solved\|tries\|awarded\|award\|awarddetail\|previous))/) {
$newstring = "('".join("','",	my $sql_parameter = "('".join("','",
$symb_id,$student_id,	$symb_id,$student_id,
$parameter)."',".	$parameter)."',".
$dbh->quote($value)."),\n";	$dbh->quote($value)."),\n";
$num_parameters ++;	$num_parameters ++;
if ($newstring !~ /''/) {	if ($sql_parameter !~ /''/) {
$store_parameters_command .= $newstring;	$store_parameters_command .= $sql_parameter;
$rows_stored++;	#$rows_stored++;
}	}
}	}
next if ($parameter !~ /^resource\.(.*)\.solved$/);	}
	# Performance
	my %stored;
	while (my ($parameter,$value) = each(%$param_hash)) {
	next if ($parameter !~ /^resource\.(.*)\.(solved\|awarded)$/);
	my $part = $1;
	my $which = $2;
	next if ($part =~ /\./);
	next if (exists($stored{$part}));
	$stored{$part}++;
#	#
my $part = $1;
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));
$awarded = '' if (! defined($awarded));	$awarded = '' if (! defined($awarded));
$award = '' if (! defined($award));	$award = '' if (! defined($award));
$awarddetail = '' if (! defined($awarddetail));	$awarddetail = '' if (! defined($awarddetail));
$newstring = "('".join("','",$symb_id,$student_id,$part_id,$part,	my $sql_performance =
$solved,$tries,$awarded,$award,	"('".join("','",$symb_id,$student_id,$part_id,$part,
$awarddetail,$timestamp)."'),\n";	$solved,$tries,$awarded,$award,
$store_performance_command .= $newstring;	$awarddetail,$timestamp)."'),\n";
	$store_performance_command .= $sql_performance;
$rows_stored++;	$rows_stored++;
}	}
}	}
chop $store_parameters_command;	if (! $rows_stored) { return ($returnstatus, undef); }
chop $store_parameters_command;	$store_parameters_command =~ s\|,\n$\|\|;
chop $store_performance_command;	$store_performance_command =~ s\|,\n$\|\|;
chop $store_performance_command;
my $start = Time::HiRes::time;	my $start = Time::HiRes::time;
$dbh->do($store_performance_command);	$dbh->do($store_performance_command);
if ($dbh->err()) {	if ($dbh->err()) {
&Apache::lonnet::logthis(' bigass insert error:'.$dbh->errstr());	&Apache::lonnet::logthis('performance bigass insert error:'.
&Apache::lonnet::logthis('command = '.$store_performance_command);	$dbh->errstr());
	&Apache::lonnet::logthis('command = '.$/.$store_performance_command);
$returnstatus = 'error: unable to insert performance into database';	$returnstatus = 'error: unable to insert performance into database';
return ($returnstatus,$student_data);	return ($returnstatus,$student_data);
}	}
$dbh->do($store_parameters_command) if ($num_parameters>0);	$dbh->do($store_parameters_command) if ($num_parameters>0);
if ($dbh->err()) {	if ($dbh->err()) {
&Apache::lonnet::logthis(' bigass insert error:'.$dbh->errstr());	&Apache::lonnet::logthis('parameters bigass insert error:'.
&Apache::lonnet::logthis('command = '.$store_parameters_command);	$dbh->errstr());
	&Apache::lonnet::logthis('command = '.$/.$store_parameters_command);
&Apache::lonnet::logthis('rows_stored = '.$rows_stored);	&Apache::lonnet::logthis('rows_stored = '.$rows_stored);
&Apache::lonnet::logthis('student_id = '.$student_id);	&Apache::lonnet::logthis('student_id = '.$student_id);
$returnstatus = 'error: unable to insert parameters into database';	$returnstatus = 'error: unable to insert parameters into database';
Line 1491 Returns nothing on success and 'error' o	Line 1599 Returns nothing on success and 'error' o
######################################	######################################
sub ensure_tables_are_set_up {	sub ensure_tables_are_set_up {
my ($courseid) = @_;	my ($courseid) = @_;
$courseid = $ENV{'request.course.id'} if (! defined($courseid));	$courseid = $env{'request.course.id'} if (! defined($courseid));
#	#
# Clean out package variables	# Clean out package variables
&setup_table_names($courseid);	&setup_table_names($courseid);
#	#
# 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 $parameters_table);
Line 1548 sub ensure_current_data {	Line 1658 sub ensure_current_data {
my ($sname,$sdom,$courseid) = @_;	my ($sname,$sdom,$courseid) = @_;
my $status = 'okay'; # return value	my $status = 'okay'; # return value
#	#
$courseid = $ENV{'request.course.id'} if (! defined($courseid));	$courseid = $env{'request.course.id'} if (! defined($courseid));
&ensure_tables_are_set_up($courseid);	&ensure_tables_are_set_up($courseid);
#	#
# Get the update time for the user	# Get the update time for the user
Line 1597 sub ensure_current_full_data {	Line 1707 sub ensure_current_full_data {
my ($sname,$sdom,$courseid) = @_;	my ($sname,$sdom,$courseid) = @_;
my $status = 'okay'; # return value	my $status = 'okay'; # return value
#	#
$courseid = $ENV{'request.course.id'} if (! defined($courseid));	$courseid = $env{'request.course.id'} if (! defined($courseid));
&ensure_tables_are_set_up($courseid);	&ensure_tables_are_set_up($courseid);
#	#
# Get the update time for the user	# Get the update time for the user
Line 1773 an empty list is returned.	Line 1883 an empty list is returned.
sub get_current_state {	sub get_current_state {
my ($sname,$sdom,$symb,$courseid,$forcedownload)=@_;	my ($sname,$sdom,$symb,$courseid,$forcedownload)=@_;
#	#
$courseid = $ENV{'request.course.id'} if (! defined($courseid));	$courseid = $env{'request.course.id'} if (! defined($courseid));
#	#
return () if (! defined($sname) \|\| ! defined($sdom));	return () if (! defined($sname) \|\| ! defined($sdom));
#	#
Line 1821 populated and all local caching variable	Line 1931 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 $symb is the symb for the problem.
Line 1874 able to answer it correctly.	Line 1988 able to answer it correctly.
################################################	################################################
################################################	################################################
sub get_problem_statistics {	sub get_problem_statistics {
my ($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));
#	#
&setup_table_names($courseid);	&setup_table_names($courseid);
my $symb_id = &get_symb_id($symb);	my $symb_id = &get_symb_id($symb);
Line 1898 sub get_problem_statistics {	Line 2012 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='.$part_id;
#	#
# Limit the students included to those specified	# Limit the students included to those specified
Line 1923 sub get_problem_statistics {	Line 2041 sub get_problem_statistics {
if (defined($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 2003 sub execute_SQL_request {	Line 2125 sub execute_SQL_request {
my ($dbh,$request)=@_;	my ($dbh,$request)=@_;
# &Apache::lonnet::logthis($request);	# &Apache::lonnet::logthis($request);
my $sth = $dbh->prepare($request);	my $sth = $dbh->prepare($request);
	if (!$sth) {
	die($dbh->errstr . " SQL: $request");
	}
$sth->execute();	$sth->execute();
my $row = $sth->fetchrow_arrayref();	my $row = $sth->fetchrow_arrayref();
if (ref($row) eq 'ARRAY' && scalar(@$row)>0) {	if (ref($row) eq 'ARRAY' && scalar(@$row)>0) {
Line 2025 sub execute_SQL_request {	Line 2150 sub execute_SQL_request {
sub populate_weight_table {	sub populate_weight_table {
my ($courseid) = @_;	my ($courseid) = @_;
if (! defined($courseid)) {	if (! defined($courseid)) {
$courseid = $ENV{'request.course.id'};	$courseid = $env{'request.course.id'};
}	}
#	#
&setup_table_names($courseid);	&setup_table_names($courseid);
my ($top,$sequences,$assessments) = get_sequence_assessment_data();	my $navmap = Apache::lonnavmaps::navmap->new();
if (! defined($top) \|\| ! ref($top)) {	if (!defined($navmap)) {
# There has been an error, better report it	&Apache::lonnet::logthis('loncoursedata::populate_weight_table:'.$/.
&Apache::lonnet::logthis('top is undefined');	' unable to get navmaps resource'.$/.
	' '.join(' ',(caller)));
	return;
	}
	my @sequences = $navmap->retrieveResources(undef,
	sub { shift->is_map(); },1,0,1);
	my @resources;
	foreach my $seq (@sequences) {
	push(@resources,$navmap->retrieveResources($seq,
	sub {shift->is_problem();},
	0,0,0));
	}
	if (! scalar(@resources)) {
	&Apache::lonnet::logthis('loncoursedata::populate_weight_table:'.$/.
	' no resources returned for '.$courseid);
return;	return;
}	}
# Since we use lonnet::EXT to retrieve problem weights,	# Since we use lonnet::EXT to retrieve problem weights,
Line 2042 sub populate_weight_table {	Line 2181 sub populate_weight_table {
my $request = 'INSERT IGNORE INTO '.$weight_table.	my $request = 'INSERT IGNORE INTO '.$weight_table.
"(symb_id,part_id,weight) VALUES ";	"(symb_id,part_id,weight) VALUES ";
my $weight;	my $weight;
foreach my $res (@$assessments) {	foreach my $res (@resources) {
my $symb_id = &get_symb_id($res->{'symb'});	my $symb_id = &get_symb_id($res->symb);
foreach my $part (@{$res->{'parts'}}) {	foreach my $part (@{$res->parts}) {
my $part_id = &get_part_id($part);	my $part_id = &get_part_id($part);
$weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',	$weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',
$res->{'symb'},	$res->symb,
undef,undef,undef);	undef,undef,undef);
if (!defined($weight) \|\| ($weight eq '')) {	if (!defined($weight) \|\| ($weight eq '')) {
$weight=1;	$weight=1;
Line 2126 sub limit_by_section_and_status {	Line 2265 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 2136 sub limit_by_section_and_status {	Line 2274 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 2144 sub limit_by_section_and_status {	Line 2317 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 2158 sub RNK_student { return 0; };	Line 2340 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 = $env{'request.course.id'};
}	}
#	#
&setup_table_names($courseid);	&setup_table_names($courseid);
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 .= $symb_limits.' AND ';
	}
	if (defined($group_limits)) {
	$limits .= $group_limits.' AND ';
}	}
$request =~ s/( AND )$//; # Remove extra conjunction	if ($limits) {
$request =~ s/( WHERE )$//; # In case there were no limits placed on it	$limits =~ s/( AND )$//; # Remove extra conjunction
$request .= ' GROUP BY a.student_id ORDER BY score';	$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 ($rows);
Line 2219 Returns: the sum of the score on the pro	Line 2417 Returns: the sum of the score on the pro
########################################################	########################################################
########################################################	########################################################
sub get_sum_of_scores {	sub get_sum_of_scores {
my ($resource,$part,$students,$courseid,$starttime,$endtime) = @_;	my ($symb,$part,$students,$courseid,$starttime,$endtime) = @_;
if (! defined($courseid)) {	if (! defined($courseid)) {
$courseid = $ENV{'request.course.id'};	$courseid = $env{'request.course.id'};
}	}
if (defined($students) &&	if (defined($students) &&
((@$students == 0) \|\|	((@$students == 0) \|\|
Line 2238 sub get_sum_of_scores {	Line 2436 sub get_sum_of_scores {
my $request = 'SELECT SUM(a.awarded*w.weight),SUM(w.weight) FROM '.	my $request = 'SELECT SUM(a.awarded*w.weight),SUM(w.weight) FROM '.
$performance_table.' AS a '.	$performance_table.' AS a '.
'NATURAL LEFT JOIN '.$weight_table.' AS w ';	'NATURAL LEFT JOIN '.$weight_table.' AS w ';
$request .= 'WHERE a.symb_id='.&get_symb_id($resource->{'symb'}).	$request .= 'WHERE a.symb_id='.&get_symb_id($symb).
' AND a.part_id='.&get_part_id($part);	' AND a.part_id='.&get_part_id($part);
if (defined($time_limits)) {	if (defined($time_limits)) {
$request .= ' AND '.$time_limits;	$request .= ' AND '.$time_limits;
Line 2283 Returns: minimum, maximum, mean, s.d., n	Line 2481 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 = $env{'request.course.id'};
}	}
#	#
&setup_table_names($courseid);	&setup_table_names($courseid);
Line 2293 sub score_stats {	Line 2491 sub score_stats {
#	#
my ($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 2307 sub score_stats {	Line 2506 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();	$sth->execute();
Line 2328 sub score_stats {	Line 2531 sub score_stats {
# &Apache::lonnet::logthis('request = '.$/.$request);	# &Apache::lonnet::logthis('request = '.$/.$request);

$request = 'SELECT SUM(weight) FROM '.$weight_table.	$request = 'SELECT SUM(weight) FROM '.$weight_table.
' WHERE ('.$symb_restriction.')';	' AS a WHERE ('.$symb_restriction.')';
my ($max_possible) = &execute_SQL_request($dbh,$request);	my ($max_possible) = &execute_SQL_request($dbh,$request);
# &Apache::lonnet::logthis('request = '.$/.$request);	# &Apache::lonnet::logthis('request = '.$/.$request);
return($min,$max,$ave,$std,$count,$max_possible);	return($min,$max,$ave,$std,$count,$max_possible);
Line 2342 sub score_stats {	Line 2545 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 2357 Returns: minimum, maximum, mean, s.d., a	Line 2560 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 = $env{'request.course.id'};
}	}
#	#
&setup_table_names($courseid);	&setup_table_names($courseid);
Line 2367 sub count_stats {	Line 2570 sub count_stats {
#	#
my ($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 2377 sub count_stats {	Line 2581 sub count_stats {
$request =	$request =
'CREATE TEMPORARY TABLE '.$stats_table.' '.	'CREATE TEMPORARY TABLE '.$stats_table.' '.
'SELECT a.student_id,'.	'SELECT a.student_id,'.
'COUNT(a.award) 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;
" AND a.award!='INCORRECT_ATTEMPTED'";	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();	$sth->execute();
Line 2416 sub count_stats {	Line 2623 sub count_stats {
######################################################	######################################################
sub get_student_data {	sub get_student_data {
my ($students,$courseid) = @_;	my ($students,$courseid) = @_;
$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 $dbh = &Apache::lonmysql::get_dbh();
return undef if (! defined($dbh));	return undef if (! defined($dbh));
Line 2445 sub get_student_data {	Line 2652 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));
#	#
&setup_table_names($courseid);	&setup_table_names($courseid);
my $symb_id = &get_symb_id($symb);	my $symb_id = &get_symb_id($symb);
Line 2476 sub get_response_data {	Line 2684 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 '.$fulldump_timestamp_table.' AS b '.
'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '.	'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '.
Line 2488 sub get_response_data {	Line 2698 sub get_response_data {
'a.part_id=c.part_id AND a.transaction = c.transaction '.	'a.part_id=c.part_id AND a.transaction = c.transaction '.
'LEFT JOIN '.$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 2520 sub get_response_data {	Line 2730 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) = @_;
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));
#	#
&setup_table_names($courseid);	&setup_table_names($courseid);
my $symb_id = &get_symb_id($symb);	my $symb_id = &get_symb_id($symb);
Line 2542 sub get_response_data_by_student {	Line 2755 sub get_response_data_by_student {
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 2583 sub RT_tries { return 2; }	Line 2797 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 ($students,$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));
#	#
&setup_table_names($courseid);	&setup_table_names($courseid);
my $symb_id = &get_symb_id($symb);	my $symb_id = &get_symb_id($symb);
	if (! defined($symb_id)) {
	&Apache::lonnet::logthis('Unable to find symb for '.$symb.' in '.$courseid);
	return undef;
	}
my $part_id = &get_part_id($part);	my $part_id = &get_part_id($part);
	if (! defined($part_id)) {
	&Apache::lonnet::logthis('Unable to find id for '.$part.' in '.$courseid);
	return undef;
	}
#	#
my $dbh = &Apache::lonmysql::get_dbh();	my $dbh = &Apache::lonmysql::get_dbh();
return undef if (! defined($dbh));	return undef if (! defined($dbh));
	my ($student_requirements,$enrollment_requirements) =
	&limit_by_section_and_status($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 '.$fulldump_part_table.' AS a '.
'NATURAL LEFT JOIN '.$fulldump_timestamp_table.' AS b '.	'LEFT JOIN '.$fulldump_timestamp_table.' AS b '.
# 'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '.	'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '.
# 'a.transaction = b.transaction '.	'a.transaction = b.transaction '.
'WHERE '.	'LEFT JOIN '.$student_table.' as d '.
	'ON a.student_id=d.student_id '.
	$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='.$part_id;
if (defined($students)) {	if (defined($student_requirements)) {
$request .= ' AND ('.	$limit .= ' AND '.$student_requirements;
join(' OR ', map {'a.student_id='.	}
&get_student_id($_->{'username'},	if (defined($enrollment_requirements)) {
$_->{'domain'})	$limit .= ' AND '.$enrollment_requirements;
} @$students
).')';
}	}
$request .= ' ORDER BY b.timestamp';	if (defined($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 2631 sub get_response_time_data {	Line 2860 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 $dbh = &Apache::lonmysql::get_dbh();
return (undef) if (! defined($dbh));	return (undef) if (! defined($dbh));
my $tmptable = $courseid.'_temp_'.time;	my $tmptable = $courseid.'_temp_'.time;
	my $request = 'DROP TABLE IF EXISTS '.$tmptable;
	# &Apache::lonnet::logthis('request = '.$/.$request);
	$dbh->do($request);
#	#
my $symb_requirements;	my $symb_requirements;
if (defined($Symbs) && @$Symbs) {	if (defined($Symbs) && @$Symbs) {
Line 2654 sub get_student_scores {	Line 2886 sub get_student_scores {
} @$Symbs).')';	} @$Symbs).')';
}	}
#	#
my $student_requirements;	my ($student_requirements,$enrollment_requirements) =
if ( (defined($Sections) && $Sections->[0] ne 'all')) {	&limit_by_section_and_status($sections,$enrollment,'b');
$student_requirements = '('.
join(' OR ', map { "b.section='".$_."'" } @$Sections
).')';
}
#
my $enrollment_requirements=undef;
if (defined($enrollment) && $enrollment ne 'Any') {
$enrollment_requirements = "b.status='".$enrollment."'";
}
#	#
my $time_requirements = undef;	my ($groups_join,$group_limits) = &limit_by_group($groups,'b','d','e');
if (defined($starttime)) {	my $time_requirements = &limit_by_start_end_time($starttime,$endtime,'a');
$time_requirements .= "a.timestamp>='".$starttime."'";
if (defined($endtime)) {
$time_requirements .= " AND a.timestamp<='".$endtime."'";
}
} elsif (defined($endtime)) {
$time_requirements .= "a.timestamp<='".$endtime."'";
}
##	##
##	$request = 'CREATE TEMPORARY TABLE IF NOT EXISTS '.$tmptable.
my $request = 'CREATE TEMPORARY TABLE IF NOT EXISTS '.$tmptable.	' SELECT a.student_id,SUM(a.awarded*c.weight) AS score FROM '.
' SELECT a.student_id,SUM(a.awarded) AS score FROM '.
$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 ';
if (defined($student_requirements) \|\| defined($enrollment_requirements)) {	if (defined($student_requirements) \|\| defined($enrollment_requirements)) {
$request .= ' NATURAL LEFT JOIN '.$student_table.' AS b ';	$request .= ' LEFT JOIN '.$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($symb_requirements)) {
Line 2743 Cleans up the package variables for loca	Line 2963 Cleans up the package variables for loca
sub setup_table_names {	sub setup_table_names {
my ($courseid) = @_;	my ($courseid) = @_;
if (! defined($courseid)) {	if (! defined($courseid)) {
$courseid = $ENV{'request.course.id'};	$courseid = $env{'request.course.id'};
}	}
#	#
if (! defined($current_course) \|\| $current_course ne $courseid) {	if (! defined($current_course) \|\| $current_course ne $courseid) {
Line 2757 sub setup_table_names {	Line 2977 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 2777 sub setup_table_names {	Line 3001 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 2816 Retrieve the classist of a given class o	Line 3042 Retrieve the classist of a given class o
information is returned from the classlist.db file and, if needed,	information is returned from the classlist.db file and, if needed,
from the students environment.	from the students environment.

Optional arguments are $cid, $cdom, and $cnum (course id, course domain,	Optional arguments are $cdom, and $cnum (course domain,
and course number, respectively). Any omitted arguments will be taken	and course number, respectively). If either is ommitted the course
from the current environment ($ENV{'request.course.id'},	will be taken from the current environment ($env{'request.course.id'},
$ENV{'course.'.$cid.'.domain'}, and $ENV{'course.'.$cid.'.num'}).	$env{'course.'.$cid.'.domain'}, and $env{'course.'.$cid.'.num'}).

Returns a reference to a hash which contains:	Returns a reference to a hash which contains:
keys '$sname:$sdom'	keys '$sname:$sdom'
Line 2846 sub CL_TYPE { return 8; }	Line 3072 sub CL_TYPE { return 8; }
sub CL_LOCKEDTYPE { return 9; }	sub CL_LOCKEDTYPE { return 9; }

sub get_classlist {	sub get_classlist {
my ($cid,$cdom,$cnum) = @_;	my ($cdom,$cnum) = @_;
$cid = $cid \|\| $ENV{'request.course.id'};	my $cid = $cdom.'_'.$cnum;
$cdom = $cdom \|\| $ENV{'course.'.$cid.'.domain'};	if (!defined($cdom) \|\| !defined($cnum)) {
$cnum = $cnum \|\| $ENV{'course.'.$cid.'.num'};	$cid = $env{'request.course.id'};
	$cdom = $env{'course.'.$cid.'.domain'};
	$cnum = $env{'course.'.$cid.'.num'};
	}
my $now = time;	my $now = time;
#	#
my %classlist=&Apache::lonnet::dump('classlist',$cdom,$cnum);	my %classlist=&Apache::lonnet::dump('classlist',$cdom,$cnum);
Line 2897 sub get_classlist {	Line 3126 sub get_classlist {
if(((!$end) \|\| $now < $end) && ((!$start) \|\| ($now > $start))) {	if(((!$end) \|\| $now < $end) && ((!$start) \|\| ($now > $start))) {
$status='Active';	$status='Active';
}	}
	if(($now < $start) && ((!$end) \|\| $now < $end )) {
	$status='Future';
	}
$classlist{$student} =	$classlist{$student} =
[$sdom,$sname,$end,$start,$id,$section,$fullname,$status,$type,$lockedtype];	[$sdom,$sname,$end,$start,$id,$section,$fullname,$status,$type,$lockedtype];
}	}
Line 2908 sub get_classlist {	Line 3140 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__

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.141.2.2
changed lines
	Added in v.1.175