--- loncom/interface/loncoursedata.pm 2003/10/24 13:34:45 1.106 +++ loncom/interface/loncoursedata.pm 2006/05/05 21:35:31 1.168 @@ -1,6 +1,6 @@ # The LearningOnline Network with CAPA # -# $Id: loncoursedata.pm,v 1.106 2003/10/24 13:34:45 matthew Exp $ +# $Id: loncoursedata.pm,v 1.168 2006/05/05 21:35:31 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -49,8 +49,7 @@ Set of functions that download and proce package Apache::loncoursedata; use strict; -use Apache::Constants qw(:common :http); -use Apache::lonnet(); +use Apache::lonnet; use Apache::lonhtmlcommon; use Time::HiRes; use Apache::lonmysql; @@ -66,253 +65,6 @@ and/or itself. =cut -#################################################### -#################################################### - -=pod - -=item &get_sequence_assessment_data() - -AT THIS TIME THE USE OF THIS FUNCTION IS *NOT* RECOMMENDED - -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(); - 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->title(); - $title =~ s/\:/\&\#058;/g; - $symb = $previous->symb(); - $src = $previous->src(); - # pick up the filename if there is no title available - if (! defined($title) || $title eq '') { - ($title) = ($src=~/\/([^\/]*)$/); - } - $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->randomout); - # Okay, from here on out we only deal with assessments - $title = $curRes->title(); - $title =~ s/\:/\&\#058;/g; - $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; - # 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); - } - $navmap->untieHashes(); - return ($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; -} - -################################################ -################################################ - -=pod - -=item &GetUserName(username,userdomain) - -Returns a hash with the following entries: - 'firstname', 'middlename', 'lastname', 'generation', and 'fullname' - - 'fullname' is the result of &Apache::loncoursedata::ProcessFullName. - -=cut - -################################################ -################################################ -sub GetUserName { - my ($username,$userdomain) = @_; - $username = $ENV{'user.name'} if (! defined($username)); - $userdomain = $ENV{'user.domain'} if (! defined($username)); - my %userenv = &Apache::lonnet::get('environment', - ['firstname','middlename','lastname','generation'], - $userdomain,$username); - $userenv{'fullname'} = &ProcessFullName($userenv{'lastname'}, - $userenv{'generation'}, - $userenv{'firstname'}, - $userenv{'middlename'}); - return %userenv; -} - -################################################ -################################################ - -=pod - -=item &ProcessFullName() - -Takes lastname, generation, firstname, and middlename (or some partial -set of this data) and returns the full name version as a string. Format -is Lastname generation, firstname middlename or a subset of this. - -=cut - -################################################ -################################################ -sub ProcessFullName { - my ($lastname, $generation, $firstname, $middlename)=@_; - my $Str = ''; - - # Strip whitespace preceeding & following name components. - $lastname =~ s/(\s+$|^\s+)//g; - $generation =~ s/(\s+$|^\s+)//g; - $firstname =~ s/(\s+$|^\s+)//g; - $middlename =~ s/(\s+$|^\s+)//g; - - if($lastname ne '') { - $Str .= $lastname; - $Str .= ' '.$generation if ($generation ne ''); - $Str .= ','; - $Str .= ' '.$firstname if ($firstname ne ''); - $Str .= ' '.$middlename if ($middlename ne ''); - } else { - $Str .= $firstname if ($firstname ne ''); - $Str .= ' '.$middlename if ($middlename ne ''); - $Str .= ' '.$generation if ($generation ne ''); - } - - return $Str; -} - ################################################ ################################################ @@ -399,21 +151,25 @@ characters) and a KEY on 'part_id'. =item $student_table -The student_table has two columns. The first is a 'student_id' and the second -is the text description of the 'student' (typically username:domain) (less -than 100 characters). The 'student_id' is automatically generated by MySQL. -The use of the name 'student_id' is loaded, I know, but this ID is used ONLY -internally to the MySQL database and is not the same as the students ID -(stored in the students environment). This table has its PRIMARY KEY on the -'student' (100 characters). - -=item $studentdata_table - -The studentdata_table has four columns: 'student_id' (the unique id of -the student), 'updatetime' (the time the students data was last updated), -'fullupdatetime' (the time the students full data was last updated), -'section', and 'classification'( the students current classification). -This table has its PRIMARY KEY on 'student_id'. +The student_table has 7 columns. The first is a 'student_id' assigned by +MySQL. The second is 'student' which is username:domain. The third through +fifth are 'section', 'status' (enrollment status), and 'classification' +(to be used in the future). The sixth and seventh ('updatetime' and +'fullupdatetime') contain the time of last update and full update of student +data. This table has its PRIMARY KEY on the 'student_id' column and is indexed +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 @@ -460,9 +216,10 @@ The response table holds data (documente 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: 'symb_id','part_id','response_id','student_id','transaction','tries', -'awarddetail', 'response_specific' (data particular to the response -type), 'response_specific_value', and 'submission (the text of the students -submission). The primary key is based on the first five columns listed above. +'awarddetail', 'response_specific', 'response_specific_value', +'response_specific_2', 'response_specific_value_2', and 'submission +(the text of the students submission). The primary key is based on the +first five columns listed above. =item $fulldump_part_table @@ -481,6 +238,13 @@ about both the response and part data. 'transaction', and 'timestamp'. The primary key is based on the first 3 columns. +=item $weight_table + +The weight table holds the weight for the problems used in the class. +Whereas the weight of a problem can vary by section and student the data +here is applied to the class as a whole. +Columns: 'symb_id','part_id','response_id','weight'. + =back =back @@ -519,12 +283,14 @@ my $current_course =''; my $symb_table; my $part_table; my $student_table; -my $studentdata_table; +my $groupnames_table; +my $students_groups_table; my $performance_table; my $parameters_table; my $fulldump_response_table; my $fulldump_part_table; my $fulldump_timestamp_table; +my $weight_table; my @Tables; ################################################ @@ -546,12 +312,14 @@ store student data. ################################################ ################################################ sub init_dbs { - my $courseid = shift; + my ($courseid,$drop) = @_; &setup_table_names($courseid); # # Drop any of the existing tables - foreach my $table (@Tables) { - &Apache::lonmysql::drop_table($table); + if ($drop) { + foreach my $table (@Tables) { + &Apache::lonmysql::drop_table($table); + } } # # Note - changes to this table must be reflected in the code that @@ -579,7 +347,7 @@ sub init_dbs { restrictions => 'NOT NULL', auto_inc => 'yes', }, { name => 'part', - type => 'VARCHAR(100)', + type => 'VARCHAR(100) BINARY', restrictions => 'NOT NULL'}, ], 'PRIMARY KEY' => ['part (100)'], @@ -594,31 +362,55 @@ sub init_dbs { restrictions => 'NOT NULL', auto_inc => 'yes', }, { name => 'student', - type => 'VARCHAR(100)', + type => 'VARCHAR(100) BINARY', + restrictions => 'NOT NULL UNIQUE'}, + { name => 'section', + type => 'VARCHAR(100) BINARY', + restrictions => 'NOT NULL'}, + { name => 'status', + type => 'VARCHAR(15) BINARY', restrictions => 'NOT NULL'}, { name => 'classification', - type => 'varchar(100)', }, - ], - 'PRIMARY KEY' => ['student (100)'], - 'KEY' => [{ columns => ['student_id']},], - }; - # - my $studentdata_table_def = { - id => $studentdata_table, - permanent => 'no', - columns => [{ name => 'student_id', - type => 'MEDIUMINT UNSIGNED', - restrictions => 'NOT NULL UNIQUE',}, + type => 'VARCHAR(100) BINARY', }, { name => 'updatetime', type => 'INT UNSIGNED'}, { name => 'fullupdatetime', type => 'INT UNSIGNED'}, - { name => 'section', - type => 'VARCHAR(100)'}, - { name => 'classification', - type => 'VARCHAR(100)', }, ], 'PRIMARY KEY' => ['student_id'], + 'KEY' => [{ columns => ['student (100)', + 'section (100)', + '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 = { @@ -634,14 +426,14 @@ sub init_dbs { type => 'MEDIUMINT UNSIGNED', restrictions => 'NOT NULL' }, { name => 'part', - type => 'VARCHAR(100)', + type => 'VARCHAR(100) BINARY', restrictions => 'NOT NULL'}, { name => 'solved', type => 'TINYTEXT' }, { name => 'tries', type => 'SMALLINT UNSIGNED' }, { name => 'awarded', - type => 'TINYTEXT' }, + type => 'REAL' }, { name => 'award', type => 'TINYTEXT' }, { name => 'awarddetail', @@ -676,7 +468,7 @@ sub init_dbs { { name => 'award', type => 'TINYTEXT' }, { name => 'awarded', - type => 'TINYTEXT' }, + type => 'REAL' }, { name => 'previous', type => 'SMALLINT UNSIGNED' }, # { name => 'regrader', @@ -714,11 +506,15 @@ sub init_dbs { { name => 'awarddetail', type => 'TINYTEXT' }, # { name => 'message', -# type => 'CHAR' }, +# type => 'CHAR BINARY'}, { name => 'response_specific', type => 'TINYTEXT' }, { name => 'response_specific_value', type => 'TINYTEXT' }, + { name => 'response_specific_2', + type => 'TINYTEXT' }, + { name => 'response_specific_value_2', + type => 'TINYTEXT' }, { name => 'submission', type => 'TEXT'}, ], @@ -753,7 +549,6 @@ sub init_dbs { { columns=>['transaction'] }, ], }; - # my $parameters_table_def = { id => $parameters_table, @@ -773,6 +568,22 @@ sub init_dbs { 'PRIMARY KEY' => ['symb_id','student_id','parameter (255)'], }; # + my $weight_table_def = { + id => $weight_table, + permanent => 'no', + columns => [{ name => 'symb_id', + type => 'MEDIUMINT UNSIGNED', + restrictions => 'NOT NULL' }, + { name => 'part_id', + type => 'MEDIUMINT UNSIGNED', + restrictions => 'NOT NULL' }, + { name => 'weight', + type => 'REAL', + restrictions => 'NOT NULL' }, + ], + 'PRIMARY KEY' => ['symb_id','part_id'], + }; + # # Create the tables my $tableid; $tableid = &Apache::lonmysql::create_table($symb_table_def); @@ -796,13 +607,6 @@ sub init_dbs { return 3; } # - $tableid = &Apache::lonmysql::create_table($studentdata_table_def); - if (! defined($tableid)) { - &Apache::lonnet::logthis("error creating studentdata_table: ". - &Apache::lonmysql::get_error()); - return 4; - } - # $tableid = &Apache::lonmysql::create_table($performance_table_def); if (! defined($tableid)) { &Apache::lonnet::logthis("error creating preformance_table: ". @@ -836,6 +640,24 @@ sub init_dbs { &Apache::lonmysql::get_error()); return 9; } + $tableid = &Apache::lonmysql::create_table($weight_table_def); + if (! defined($tableid)) { + &Apache::lonnet::logthis("error creating weight_table: ". + &Apache::lonmysql::get_error()); + 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; } @@ -846,13 +668,20 @@ sub init_dbs { =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 ################################################ ################################################ sub delete_caches { my $courseid = shift; - $courseid = $ENV{'request.course.id'} if (! defined($courseid)); + $courseid = $env{'request.course.id'} if (! defined($courseid)); # &setup_table_names($courseid); # @@ -1039,9 +868,9 @@ sub get_student_id { $have_read_student_table = 1; } if (! exists($ids_by_student{$student})) { - &Apache::lonmysql::store_row($student_table, - [undef,$student,undef]); + &populate_student_table(); undef(%ids_by_student); + undef(%students_by_id); my @Result = &Apache::lonmysql::get_rows($student_table); foreach (@Result) { $ids_by_student{$_->[1]}=$_->[0]; @@ -1065,6 +894,164 @@ sub get_student { return undef; # error } +sub populate_student_table { + my ($courseid) = @_; + if (! defined($courseid)) { + $courseid = $env{'request.course.id'}; + } + # + &setup_table_names($courseid); + &init_dbs($courseid,0); + my $dbh = &Apache::lonmysql::get_dbh(); + my $request = 'INSERT IGNORE INTO '.$student_table. + "(student,section,status) VALUES "; + my $cdom = $env{'course.'.$courseid.'.domain'}; + my $cnum = $env{'course.'.$courseid.'.num'}; + my $classlist = &get_classlist($cdom,$cnum); + my $student_count=0; + while (my ($student,$data) = each %$classlist) { + my ($section,$status) = ($data->[&CL_SECTION()], + $data->[&CL_STATUS()]); + if ($section eq '' || $section =~ /^\s*$/) { + $section = 'none'; + } + $request .= "('".$student."','".$section."','".$status."'),"; + $student_count++; + } + return if ($student_count == 0); + chop($request); + $dbh->do($request); + if ($dbh->err()) { + &Apache::lonnet::logthis("error ".$dbh->errstr(). + " occured executing \n". + $request); + } + 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; + my $numgrps = &Apache::loncommon::coursegroups(\%curr_groups,$cdom,$cnum); + return if (!$numgrps); + 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 $classlist = &get_classlist($cdom,$cnum); + my ($classgroups,$studentgroups) = &get_group_memberships($classlist, + $cdom,$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; +} + ################################################ ################################################ @@ -1092,12 +1079,22 @@ sub clear_internal_caches { $have_read_student_table = 0; undef(%ids_by_student); undef(%students_by_id); + $have_read_groupnames_table = 0; + undef(%ids_by_groupname); } ################################################ ################################################ +sub symb_is_for_task { + my ($symb) = @_; + return ($symb =~ /\.task$/); +} + +################################################ +################################################ + =pod =item &update_full_student_data($sname,$sdom,$courseid) @@ -1123,8 +1120,7 @@ a description of the error. Once the "fulldump" tables are updated, the tables used for chart and spreadsheet (which hold only the current state of the student on their homework, not historical data) are updated. If all updates have occured -successfully, the studentdata table is updated to reflect the time of the -update. +successfully, $student_table is updated to reflect the time of the update. Notice we do not insert the data and immediately query it. This means it is possible for there to be data returned this first time that is not @@ -1141,13 +1137,14 @@ sub update_full_student_data { &setup_table_names($courseid); # my $student_id = &get_student_id($sname,$sdom); + my @group_ids = &get_students_groupids($student_id); my $student = $sname.':'.$sdom; # my $returnstatus = 'okay'; # # Download students data 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/) { $returnstatus = 'error retrieving full student data'; return $returnstatus; @@ -1187,7 +1184,60 @@ sub update_full_student_data { next; } elsif ($parameter eq 'version') { 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| awarded| previous| @@ -1223,11 +1273,7 @@ sub update_full_student_data { # However, there is one wrinkle: submissions which end in # and odd number of '\' cause insert errors to occur. # Best trap this somehow... - $value =~ s/\'/\\\'/g; - my ($offensive_string) = ($value =~ /(\\+)$/); - if (length($offensive_string) % 2) { - $value =~ s/\\$/\\\\/; - } + $value = $dbh->quote($value); } if ($field eq 'submissiongrading' || $field eq 'molecule') { @@ -1276,13 +1322,23 @@ sub update_full_student_data { while (my ($part_id,$hash2) = each (%$hash1)) { while (my ($resp_id,$hash3) = each (%$hash2)) { while (my ($transaction,$data) = each (%$hash3)) { - $store_command .= "('".join("','",$symb_id,$part_id, - $resp_id,$student_id, - $transaction, - $data->{'awarddetail'}, - $data->{'response_specific'}, - $data->{'response_specific_value'}, - $data->{'submission'})."'),"; + my $submission = $data->{'submission'}; + # We have to be careful with user supplied input. + # most of the time we are okay because it is escaped. + # However, there is one wrinkle: submissions which end in + # and odd number of '\' cause insert errors to occur. + # Best trap this somehow... + $submission = $dbh->quote($submission); + $store_command .= "('". + join("','",$symb_id,$part_id, + $resp_id,$student_id, + $transaction, + $data->{'awarddetail'}, + $data->{'response_specific'}, + $data->{'response_specific_value'}, + $data->{'response_specific_2'}, + $data->{'response_specific_value_2'}). + "',".$submission."),"; $store_rows++; } } @@ -1311,9 +1367,14 @@ sub update_full_student_data { ## ## Update the students time...... if ($returnstatus eq 'okay') { - &Apache::lonmysql::replace_row - ($studentdata_table, - [$student_id,$time_of_retrieval,$time_of_retrieval,undef,undef]); + &store_updatetime($student_id,$time_of_retrieval,$time_of_retrieval); + if ($dbh->err) { + if ($returnstatus eq 'okay') { + $returnstatus = 'error updating student time'; + } else { + $returnstatus = 'error updating student time'; + } + } } return $returnstatus; } @@ -1359,6 +1420,7 @@ sub update_student_data { &setup_table_names($courseid); # my $student_id = &get_student_id($sname,$sdom); + my @group_ids = &get_students_groupids($student_id); my $student = $sname.':'.$sdom; # my $returnstatus = 'okay'; @@ -1381,17 +1443,36 @@ sub update_student_data { # # Set the students update time if ($Results[0] eq 'okay') { - &Apache::lonmysql::replace_row($studentdata_table, - [$student_id,$time_of_retrieval,undef,undef,undef]); + &store_updatetime($student_id,$time_of_retrieval); } # return @Results; } +sub store_updatetime { + my ($student_id,$updatetime,$fullupdatetime)=@_; + my $values = ''; + if (defined($updatetime)) { + $values = 'updatetime='.$updatetime.' '; + } + if (defined($fullupdatetime)) { + if ($values ne '') { + $values .= ','; + } + $values .= 'fullupdatetime='.$fullupdatetime.' '; + } + return if ($values eq ''); + my $dbh = &Apache::lonmysql::get_dbh(); + my $request = 'UPDATE '.$student_table.' SET '.$values. + ' WHERE student_id='.$student_id.' LIMIT 1'; + $dbh->do($request); +} + sub store_student_data { my ($sname,$sdom,$courseid,$student_data) = @_; # my $student_id = &get_student_id($sname,$sdom); + my @group_ids = &get_students_groupids($student_id); my $student = $sname.':'.$sdom; # my $returnstatus = 'okay'; @@ -1419,60 +1500,79 @@ sub store_student_data { # make sure the symb is set up properly my $symb_id = &get_symb_id($current_symb); # - # Load data into the tables + # Parameters while (my ($parameter,$value) = each(%$param_hash)) { - my $newstring; if ($parameter !~ /(timestamp|resource\.(.*)\.(solved|tries|awarded|award|awarddetail|previous))/) { - $newstring = "('".join("','", - $symb_id,$student_id, - $parameter)."',". - $dbh->quote($value)."),\n"; + my $sql_parameter = "('".join("','", + $symb_id,$student_id, + $parameter)."',". + $dbh->quote($value)."),\n"; $num_parameters ++; - if ($newstring !~ /''/) { - $store_parameters_command .= $newstring; - $rows_stored++; + if ($sql_parameter !~ /''/) { + $store_parameters_command .= $sql_parameter; + #$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); next if (!defined($part_id)); - my $solved = $value; - my $tries = $param_hash->{'resource.'.$part.'.tries'}; - my $awarded = $param_hash->{'resource.'.$part.'.awarded'}; + + my ($solved,$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 $awarddetail = $param_hash->{'resource.'.$part.'.awarddetail'}; 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)); $tries = '' if (! defined($tries)); $awarded = '' if (! defined($awarded)); $award = '' if (! defined($award)); $awarddetail = '' if (! defined($awarddetail)); - $newstring = "('".join("','",$symb_id,$student_id,$part_id,$part, - $solved,$tries,$awarded,$award, - $awarddetail,$timestamp)."'),\n"; - $store_performance_command .= $newstring; + my $sql_performance = + "('".join("','",$symb_id,$student_id,$part_id,$part, + $solved,$tries,$awarded,$award, + $awarddetail,$timestamp)."'),\n"; + $store_performance_command .= $sql_performance; $rows_stored++; } } - chop $store_parameters_command; - chop $store_parameters_command; - chop $store_performance_command; - chop $store_performance_command; + if (! $rows_stored) { return ($returnstatus, undef); } + $store_parameters_command =~ s|,\n$||; + $store_performance_command =~ s|,\n$||; my $start = Time::HiRes::time; $dbh->do($store_performance_command); if ($dbh->err()) { - &Apache::lonnet::logthis(' bigass insert error:'.$dbh->errstr()); - &Apache::lonnet::logthis('command = '.$store_performance_command); + &Apache::lonnet::logthis('performance bigass insert error:'. + $dbh->errstr()); + &Apache::lonnet::logthis('command = '.$/.$store_performance_command); $returnstatus = 'error: unable to insert performance into database'; return ($returnstatus,$student_data); } $dbh->do($store_parameters_command) if ($num_parameters>0); if ($dbh->err()) { - &Apache::lonnet::logthis(' bigass insert error:'.$dbh->errstr()); - &Apache::lonnet::logthis('command = '.$store_parameters_command); + &Apache::lonnet::logthis('parameters bigass insert error:'. + $dbh->errstr()); + &Apache::lonnet::logthis('command = '.$/.$store_parameters_command); &Apache::lonnet::logthis('rows_stored = '.$rows_stored); &Apache::lonnet::logthis('student_id = '.$student_id); $returnstatus = 'error: unable to insert parameters into database'; @@ -1500,33 +1600,36 @@ Returns nothing on success and 'error' o ###################################### sub ensure_tables_are_set_up { my ($courseid) = @_; - $courseid = $ENV{'request.course.id'} if (! defined($courseid)); + $courseid = $env{'request.course.id'} if (! defined($courseid)); # # Clean out package variables &setup_table_names($courseid); # # if the tables do not exist, make them my @CurrentTable = &Apache::lonmysql::tables_in_db(); - my ($found_symb,$found_student,$found_part,$found_studentdata, + my ($found_symb,$found_student,$found_groups,$found_groupnames,$found_part, $found_performance,$found_parameters,$found_fulldump_part, - $found_fulldump_response,$found_fulldump_timestamp); + $found_fulldump_response,$found_fulldump_timestamp, + $found_weight); foreach (@CurrentTable) { $found_symb = 1 if ($_ eq $symb_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); - $found_studentdata = 1 if ($_ eq $studentdata_table); $found_performance = 1 if ($_ eq $performance_table); $found_parameters = 1 if ($_ eq $parameters_table); $found_fulldump_part = 1 if ($_ eq $fulldump_part_table); $found_fulldump_response = 1 if ($_ eq $fulldump_response_table); $found_fulldump_timestamp = 1 if ($_ eq $fulldump_timestamp_table); + $found_weight = 1 if ($_ eq $weight_table); } - if (!$found_symb || !$found_studentdata || - !$found_student || !$found_part || - !$found_performance || !$found_parameters || + if (!$found_symb || + !$found_student || !$found_part || + !$found_performance || !$found_parameters || !$found_fulldump_part || !$found_fulldump_response || - !$found_fulldump_timestamp ) { - if (&init_dbs($courseid)) { + !$found_fulldump_timestamp || !$found_weight ) { + if (&init_dbs($courseid,1)) { return 'error'; } } @@ -1544,7 +1647,7 @@ Input: $sname, $sdom, $courseid Output: $status, $data This routine ensures the data for a given student is up to date. -The $studentdata_table is queried to determine the time of the last update. +The $student_table is queried to determine the time of the last update. If the students data is out of date, &update_student_data() is called. The return values from the call to &update_student_data() are returned. @@ -1556,7 +1659,7 @@ sub ensure_current_data { my ($sname,$sdom,$courseid) = @_; 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); # # Get the update time for the user @@ -1566,11 +1669,12 @@ sub ensure_current_data { $Apache::lonnet::perlvar{'lonUsersDir'}); # my $student_id = &get_student_id($sname,$sdom); - my @Result = &Apache::lonmysql::get_rows($studentdata_table, + my @group_ids = &get_students_groupids($student_id); + my @Result = &Apache::lonmysql::get_rows($student_table, "student_id ='$student_id'"); my $data = undef; if (@Result) { - $updatetime = $Result[0]->[1]; + $updatetime = $Result[0]->[5]; # Ack! This is dumb! } if ($modifiedtime > $updatetime) { ($status,$data) = &update_student_data($sname,$sdom,$courseid); @@ -1591,7 +1695,7 @@ Output: $status This routine ensures the fulldata (the data from a lonnet::dump, not a lonnet::currentdump) for a given student is up to date. -The $studentdata_table is queried to determine the time of the last update. +The $student_table is queried to determine the time of the last update. If the students fulldata is out of date, &update_full_student_data() is called. @@ -1605,7 +1709,7 @@ sub ensure_current_full_data { my ($sname,$sdom,$courseid) = @_; 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); # # Get the update time for the user @@ -1614,11 +1718,12 @@ sub ensure_current_full_data { $Apache::lonnet::perlvar{'lonUsersDir'}); # my $student_id = &get_student_id($sname,$sdom); - my @Result = &Apache::lonmysql::get_rows($studentdata_table, + my @group_ids = &get_students_groupids($student_id); + my @Result = &Apache::lonmysql::get_rows($student_table, "student_id ='$student_id'"); my $updatetime; if (@Result && ref($Result[0]) eq 'ARRAY') { - $updatetime = $Result[0]->[2]; + $updatetime = $Result[0]->[6]; } if (! defined($updatetime) || $modifiedtime > $updatetime) { $status = &update_full_student_data($sname,$sdom,$courseid); @@ -1781,7 +1886,7 @@ an empty list is returned. sub get_current_state { 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)); # @@ -1829,12 +1934,18 @@ populated and all local caching variable properly. This means you need to call &ensure_current_data for the students you are concerned with prior to calling this routine. -Inputs: $students, $symb, $part, $courseid +Inputs: $Sections, Groups, $status, $symb, $part, $courseid, $starttime, + $endtime =over 4 -=item $students is an array of hash references. -Each hash must contain at least the 'username' and 'domain' of a student. +=item $Sections Array ref containing section names for students. +'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 $symb is the symb for the problem. @@ -1842,6 +1953,9 @@ Each hash must contain at least the 'use =item $courseid is the course id, of course! +=item $starttime and $endtime are unix times which to use to limit +the statistical data. + =back Outputs: See the code for up to date information. A hash reference is @@ -1877,9 +1991,9 @@ able to answer it correctly. ################################################ ################################################ sub get_problem_statistics { - my ($students,$symb,$part,$courseid) = @_; + my ($Sections,$Groups,$status,$symb,$part,$courseid,$starttime,$endtime) = @_; return if (! defined($symb) || ! defined($part)); - $courseid = $ENV{'request.course.id'} if (! defined($courseid)); + $courseid = $env{'request.course.id'} if (! defined($courseid)); # &setup_table_names($courseid); my $symb_id = &get_symb_id($symb); @@ -1889,97 +2003,134 @@ sub get_problem_statistics { my $dbh = &Apache::lonmysql::get_dbh(); return undef if (! defined($dbh)); # - # A) Number of Students attempting problem - # B) Total number of tries of students attempting problem - # C) Mod (largest number of tries for solving the problem) - # D) Mean (average number of tries for solving the problem) - # E) Number of students to solve the problem - # F) Number of students to solve the problem by override - # G) Number of students unable to solve the problem - # H) Degree of difficulty : 1-(E+F)/B - # I) Standard deviation of number of tries - # J) Skew of tries: sqrt(sum(Xi-D)^3)/A - # + # Clean out the table $dbh->do('DROP TABLE '.$stats_table); # May return an error my $request = - 'CREATE TEMPORARY TABLE '.$stats_table. - ' SELECT student_id,solved,award,tries FROM '.$performance_table. - ' WHERE symb_id='.$symb_id.' AND part_id='.$part_id; - if (defined($students)) { + 'CREATE TEMPORARY TABLE '.$stats_table.' '. + 'SELECT a.student_id,a.solved,a.award,a.awarded,a.tries '. + 'FROM '.$performance_table.' AS a '; + # + # See if we need to include some requirements on the students + if ((defined($Sections) && lc($Sections->[0]) ne 'all') || + (defined($status) && lc($status) ne 'any')) { + $request .= 'NATURAL LEFT JOIN '.$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='.$part_id; + # + # Limit the students included to those specified + if (defined($Sections) && lc($Sections->[0]) ne 'all') { $request .= ' AND ('. - join(' OR ', map {'student_id='. - &get_student_id($_->{'username'}, - $_->{'domain'}) - } @$students + join(' OR ', map { "b.section='".$_."'" } @$Sections ).')'; } -# &Apache::lonnet::logthis($request); + if (defined($status) && lc($status) ne 'any') { + $request .= " AND b.status='".$status."'"; + } + # + # Limit by starttime and endtime + my $time_requirements = undef; + if (defined($starttime)) { + $time_requirements .= 'a.timestamp>='.$starttime; + if (defined($endtime)) { + $time_requirements .= ' AND a.timestamp<='.$endtime; + } + } elsif (defined($endtime)) { + $time_requirements .= 'a.timestamp<='.$endtime; + } + if (defined($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 $dbh->do($request); - my ($num,$tries,$mod,$mean,$STD) = &execute_SQL_request - ($dbh, - 'SELECT COUNT(*),SUM(tries),MAX(tries),AVG(tries),STD(tries) FROM '. - $stats_table); - my ($Solved) = &execute_SQL_request($dbh,'SELECT COUNT(tries) FROM '. - $stats_table. - " WHERE solved='correct_by_student' OR solved='correct_by_scantron'"); - my ($solved) = &execute_SQL_request($dbh,'SELECT COUNT(tries) FROM '. - $stats_table. - " WHERE solved='correct_by_override'"); + # + # Collect the first suite of statistics + $request = 'SELECT COUNT(*),SUM(tries),'. + 'AVG(tries),STD(tries) '. + 'FROM '.$stats_table; + my ($num,$tries,$mean,$STD) = &execute_SQL_request + ($dbh,$request); + # + $request = 'SELECT MAX(tries),MIN(tries) FROM '.$stats_table. + ' WHERE awarded>0'; + if (defined($time_requirements)) { + $request .= ' AND '.$time_requirements; + } + my ($max,$min) = &execute_SQL_request($dbh,$request); + # + $request = 'SELECT SUM(awarded) FROM '.$stats_table; + if (defined($time_requirements)) { + $request .= ' AND '.$time_requirements; + } + my ($Solved) = &execute_SQL_request($dbh,$request); + # + $request = 'SELECT SUM(awarded) FROM '.$stats_table. + " WHERE solved='correct_by_override'"; + if (defined($time_requirements)) { + $request .= ' AND '.$time_requirements; + } + my ($solved) = &execute_SQL_request($dbh,$request); + # + $Solved -= $solved; + # $num = 0 if (! defined($num)); $tries = 0 if (! defined($tries)); - $mod = 0 if (! defined($mod)); + $max = 0 if (! defined($max)); + $min = 0 if (! defined($min)); $STD = 0 if (! defined($STD)); - $Solved = 0 if (! defined($Solved)); + $Solved = 0 if (! defined($Solved) || $Solved < 0); $solved = 0 if (! defined($solved)); # + # Compute the more complicated statistics my $DegOfDiff = 'nan'; $DegOfDiff = 1-($Solved)/$tries if ($tries>0); - + # my $SKEW = 'nan'; my $wrongpercent = 0; + my $numwrong = 'nan'; if ($num > 0) { ($SKEW) = &execute_SQL_request($dbh,'SELECT SQRT(SUM('. 'POWER(tries - '.$STD.',3)'. '))/'.$num.' FROM '.$stats_table); - $wrongpercent=int(10*100*($num-$Solved+$solved)/$num)/10; + $numwrong = $num-$Solved; + $wrongpercent=int(10*100*$numwrong/$num)/10; } # + # Drop the temporary table $dbh->do('DROP TABLE '.$stats_table); # May return an error # - # Store in metadata - # - if ($num) { - my %storestats=(); - - my $urlres=(&Apache::lonnet::decode_symb($symb))[2]; - - $storestats{$courseid.'___'.$urlres.'___timestamp'}=time; - $storestats{$courseid.'___'.$urlres.'___stdno'}=$num; - $storestats{$courseid.'___'.$urlres.'___avetries'}=$mean; - $storestats{$courseid.'___'.$urlres.'___difficulty'}=$DegOfDiff; - - $urlres=~/^(\w+)\/(\w+)/; - &Apache::lonnet::put('nohist_resevaldata',\%storestats,$1,$2); - } - # # Return result - # return { num_students => $num, tries => $tries, - max_tries => $mod, + max_tries => $max, + min_tries => $min, mean_tries => $mean, std_tries => $STD, skew_tries => $SKEW, num_solved => $Solved, num_override => $solved, + num_wrong => $numwrong, per_wrong => $wrongpercent, deg_of_diff => $DegOfDiff }; } +## +## This is a helper for get_statistics sub execute_SQL_request { my ($dbh,$request)=@_; # &Apache::lonnet::logthis($request); my $sth = $dbh->prepare($request); + if (!$sth) { + die($dbh->errstr . " SQL: $request"); + } $sth->execute(); my $row = $sth->fetchrow_arrayref(); if (ref($row) eq 'ARRAY' && scalar(@$row)>0) { @@ -1988,9 +2139,494 @@ sub execute_SQL_request { return (); } +###################################################### +###################################################### + +=pod + +=item &populate_weight_table + +=cut + +###################################################### +###################################################### +sub populate_weight_table { + my ($courseid) = @_; + if (! defined($courseid)) { + $courseid = $env{'request.course.id'}; + } + # + &setup_table_names($courseid); + my $navmap = Apache::lonnavmaps::navmap->new(); + if (!defined($navmap)) { + &Apache::lonnet::logthis('loncoursedata::populate_weight_table:'.$/. + ' unable to get navmaps resource'.$/. + ' '.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; + } + # Since we use lonnet::EXT to retrieve problem weights, + # to ensure current data we must clear the caches out. + &Apache::lonnet::clear_EXT_cache_status(); + my $dbh = &Apache::lonmysql::get_dbh(); + my $request = 'INSERT IGNORE INTO '.$weight_table. + "(symb_id,part_id,weight) VALUES "; + my $weight; + foreach my $res (@resources) { + my $symb_id = &get_symb_id($res->symb); + foreach my $part (@{$res->parts}) { + my $part_id = &get_part_id($part); + $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight', + $res->symb, + undef,undef,undef); + if (!defined($weight) || ($weight eq '')) { + $weight=1; + } + $request .= "('".$symb_id."','".$part_id."','".$weight."'),"; + } + } + $request =~ s/(,)$//; +# &Apache::lonnet::logthis('request = '.$/.$request); + $dbh->do($request); + if ($dbh->err()) { + &Apache::lonnet::logthis("error ".$dbh->errstr(). + " occured executing \n". + $request); + } + return; +} + +########################################################## +########################################################## + +=pod + +=item &limit_by_start_end_times + +Build SQL WHERE condition which limits the data collected by the start +and end times provided + +Inputs: $starttime, $endtime, $table + +Returns: $time_limits + +=cut + +########################################################## +########################################################## +sub limit_by_start_end_time { + my ($starttime,$endtime,$table) = @_; + my $time_requirements = undef; + if (defined($starttime)) { + $time_requirements .= $table.".timestamp>='".$starttime."'"; + if (defined($endtime)) { + $time_requirements .= " AND ".$table.".timestamp<='".$endtime."'"; + } + } elsif (defined($endtime)) { + $time_requirements .= $table.".timestamp<='".$endtime."'"; + } + return $time_requirements; +} + +########################################################## +########################################################## + +=pod + +=item &limit_by_section_and_status + +Build SQL WHERE condition which limits the data collected by section and +student status. + +Inputs: $Sections (array ref) + $enrollment (string: 'any', 'expired', 'active') + $tablename The name of the table that holds the student data + +Returns: $student_requirements,$enrollment_requirements + +=cut + +########################################################## +########################################################## +sub limit_by_section_and_status { + my ($Sections,$enrollment,$tablename) = @_; + my $student_requirements = undef; + if ( (defined($Sections) && $Sections->[0] ne 'all')) { + $student_requirements = '('. + join(' OR ', map { $tablename.".section='".$_."'" } @$Sections + ).')'; + } + my $enrollment_requirements=undef; + if (defined($enrollment) && $enrollment ne 'Any') { + $enrollment_requirements = $tablename.".status='".$enrollment."'"; + } + return ($student_requirements,$enrollment_requirements); +} + +###################################################### +###################################################### + +=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 + +=item rank_students_by_scores_on_resources + +Inputs: + $resources: array ref of hash ref. Each hash ref needs key 'symb'. + $Sections: array ref of sections to include, + $Groups: array ref of groups to include. + $enrollment: string, + $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 +their score on the resources. $starttime and $endtime constrain the +list to awards obtained during the given time limits. $has_score_on +constrains the list to those students who at least attempted the +resource identified by the given symb, which is used to filter out +such students for statistics that would be adversely affected by such +students. + +=cut + +###################################################### +###################################################### +sub RNK_student { return 0; }; +sub RNK_score { return 1; }; + +sub rank_students_by_scores_on_resources { + my ($resources,$Sections,$Groups,$enrollment,$courseid,$starttime,$endtime, + $has_award_for) = @_; + return if (! defined($resources) || ! ref($resources) eq 'ARRAY'); + if (! defined($courseid)) { + $courseid = $env{'request.course.id'}; + } + # + &setup_table_names($courseid); + my $dbh = &Apache::lonmysql::get_dbh(); + my ($section_limits,$enrollment_limits)= + &limit_by_section_and_status($Sections,$enrollment,'b'); + my ($groups_join,$group_limits) = &limit_by_group($Groups,'b','c','d'); + my $symb_limits = '('.join(' OR ',map {'a.symb_id='.&get_symb_id($_); + } @$resources + ).')'; + my ($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 $request = "SELECT b.student,SUM(a.awarded*w.weight) AS score " + ."$award_col FROM $performance_table AS a ". + "NATURAL LEFT JOIN $weight_table AS w ". + "LEFT JOIN $student_table AS b ON a.student_id=b.student_id ". + "$award_join $groups_join "; + my $limits; + if (defined($section_limits)) { + $limits .= $section_limits.' AND '; + } + if (defined($enrollment_limits)) { + $limits .= $enrollment_limits.' AND '; + } + if (defined($time_limits)) { + $limits .= $time_limits.' AND '; + } + if ($symb_limits ne '()') { + $limits .= $symb_limits.' AND '; + } + if (defined($group_limits)) { + $limits .= $group_limits.' AND '; + } + if ($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); + my $sth = $dbh->prepare($request) or die "Can't prepare $request"; + $sth->execute(); + my $rows = $sth->fetchall_arrayref(); + return ($rows); +} + +######################################################## +######################################################## + +=pod + +=item &get_sum_of_scores + +Inputs: $resource (hash ref, needs {'symb'} key), +$part, (the part id), +$students (array ref, contents of array are scalars holding 'sname:sdom'), +$courseid + +Returns: the sum of the score on the problem part over the students and the + maximum possible value for the sum (taken from the weight table). + +=cut + +######################################################## +######################################################## +sub get_sum_of_scores { + my ($symb,$part,$students,$courseid,$starttime,$endtime) = @_; + if (! defined($courseid)) { + $courseid = $env{'request.course.id'}; + } + if (defined($students) && + ((@$students == 0) || + (@$students == 1 && (! defined($students->[0]) || + $students->[0] eq '')) + ) + ){ + undef($students); + } + # + &setup_table_names($courseid); + my $dbh = &Apache::lonmysql::get_dbh(); + my $time_limits = &limit_by_start_end_time($starttime,$endtime,'a'); + my $request = 'SELECT SUM(a.awarded*w.weight),SUM(w.weight) FROM '. + $performance_table.' AS a '. + 'NATURAL LEFT JOIN '.$weight_table.' AS w '; + $request .= 'WHERE a.symb_id='.&get_symb_id($symb). + ' AND a.part_id='.&get_part_id($part); + if (defined($time_limits)) { + $request .= ' AND '.$time_limits; + } + if (defined($students)) { + $request .= ' AND ('. + join(' OR ',map {'a.student_id='.&get_student_id(split(':',$_)); + } @$students). + ')'; + } + my $sth = $dbh->prepare($request); + $sth->execute(); + my $rows = $sth->fetchrow_arrayref(); + if ($dbh->err) { + &Apache::lonnet::logthis('error 1 = '.$dbh->errstr()); + &Apache::lonnet::logthis('prepared then executed, fetchrow_arrayrefed'. + $/.$request); + return (undef,undef); + } + return ($rows->[0],$rows->[1]); +} + +######################################################## +######################################################## + +=pod + +=item &score_stats + +Inputs: $Sections, $enrollment, $symbs, $starttime, + $endtime, $courseid + +$Sections, $enrollment, $starttime, $endtime, and $courseid are the same as +elsewhere in this module. +$symbs is an array ref of symbs + +Returns: minimum, maximum, mean, s.d., number of students, and maximum + possible of student scores on the given resources + +=cut + +######################################################## +######################################################## +sub score_stats { + my ($Sections,$Groups,$enrollment,$symbs,$starttime,$endtime,$courseid)=@_; + if (! defined($courseid)) { + $courseid = $env{'request.course.id'}; + } + # + &setup_table_names($courseid); + my $dbh = &Apache::lonmysql::get_dbh(); + # + my ($section_limits,$enrollment_limits)= + &limit_by_section_and_status($Sections,$enrollment,'b'); + my ($groups_join,$group_limits) = &limit_by_group($Groups,'b','c','d'); + my $time_limits = &limit_by_start_end_time($starttime,$endtime,'a'); + my @Symbids = map { &get_symb_id($_); } @{$symbs}; + # + my $stats_table = $courseid.'_problem_stats'; + my $symb_restriction = join(' OR ',map {'a.symb_id='.$_;} @Symbids); + my $request = 'DROP TABLE '.$stats_table; + $dbh->do($request); + $request = + 'CREATE TEMPORARY TABLE '.$stats_table.' '. + 'SELECT a.student_id,'. + 'SUM(a.awarded*w.weight) AS score FROM '. + $performance_table.' AS a '. + 'NATURAL LEFT JOIN '.$weight_table.' AS w '. + 'LEFT JOIN '.$student_table.' AS b ON a.student_id=b.student_id '. + $groups_join; + my $limit = ' WHERE ('.$symb_restriction.')'; + if ($time_limits) { + $limit .= ' AND '.$time_limits; + } + if ($section_limits) { + $limit .= ' AND '.$section_limits; + } + if ($enrollment_limits) { + $limit .= ' AND '.$enrollment_limits; + } + if ($group_limits) { + $limit .= ' AND '.$group_limits; + } + $request .= $limit.' GROUP BY a.student_id'; +# &Apache::lonnet::logthis('request = '.$/.$request); + my $sth = $dbh->prepare($request); + $sth->execute(); + $request = + 'SELECT AVG(score),STD(score),MAX(score),MIN(score),COUNT(score) '. + 'FROM '.$stats_table; + my ($ave,$std,$max,$min,$count) = &execute_SQL_request($dbh,$request); +# &Apache::lonnet::logthis('request = '.$/.$request); + + $request = 'SELECT SUM(weight) FROM '.$weight_table. + ' AS a WHERE ('.$symb_restriction.')'; + my ($max_possible) = &execute_SQL_request($dbh,$request); + # &Apache::lonnet::logthis('request = '.$/.$request); + return($min,$max,$ave,$std,$count,$max_possible); +} + + +######################################################## +######################################################## + +=pod + +=item &count_stats + +Inputs: $Sections, $Groups, $enrollment, $symbs, $starttime, + $endtime, $courseid + +$Sections, $Groups $enrollment, $starttime, $endtime, and $courseid are the +same as elsewhere in this module. +$symbs is an array ref of symbs + +Returns: minimum, maximum, mean, s.d., and number of students + of the number of items correct on the given resources + +=cut + +######################################################## +######################################################## +sub count_stats { + my ($Sections,$Groups,$enrollment,$symbs,$starttime,$endtime,$courseid)=@_; + if (! defined($courseid)) { + $courseid = $env{'request.course.id'}; + } + # + &setup_table_names($courseid); + my $dbh = &Apache::lonmysql::get_dbh(); + # + my ($section_limits,$enrollment_limits)= + &limit_by_section_and_status($Sections,$enrollment,'b'); + my ($groups_join,$group_limits) = &limit_by_group($Groups,'b','c','d'); + my $time_limits = &limit_by_start_end_time($starttime,$endtime,'a'); + my @Symbids = map { &get_symb_id($_); } @{$symbs}; + # + my $stats_table = $courseid.'_problem_stats'; + my $symb_restriction = join(' OR ',map {'a.symb_id='.$_;} @Symbids); + my $request = 'DROP TABLE '.$stats_table; + $dbh->do($request); + $request = + 'CREATE TEMPORARY TABLE '.$stats_table.' '. + 'SELECT a.student_id,'. + 'SUM(a.awarded) AS count FROM '. + $performance_table.' AS a '. + 'LEFT JOIN '.$student_table.' AS b ON a.student_id=b.student_id '. + $groups_join; + my $limit = ' WHERE ('.$symb_restriction.')'; + if ($time_limits) { + $limit .= ' AND '.$time_limits; + } + if ($section_limits) { + $limit .= ' AND '.$section_limits; + } + if ($enrollment_limits) { + $limit .= ' AND '.$enrollment_limits; + } + if ($group_limits) { + $limit .= ' AND '.$group_limits; + } + $request .= $limit.' GROUP BY a.student_id'; +# &Apache::lonnet::logthis('request = '.$/.$request); + my $sth = $dbh->prepare($request); + $sth->execute(); + $request = + 'SELECT AVG(count),STD(count),MAX(count),MIN(count),COUNT(count) '. + 'FROM '.$stats_table; + my ($ave,$std,$max,$min,$count) = &execute_SQL_request($dbh,$request); +# &Apache::lonnet::logthis('request = '.$/.$request); + return($min,$max,$ave,$std,$count); +} + +###################################################### +###################################################### + +=pod + +=item get_student_data + +=cut + +###################################################### +###################################################### sub get_student_data { my ($students,$courseid) = @_; - $courseid = $ENV{'request.course.id'} if (! defined($courseid)); + $courseid = $env{'request.course.id'} if (! defined($courseid)); &setup_table_names($courseid); my $dbh = &Apache::lonmysql::get_dbh(); return undef if (! defined($dbh)); @@ -2009,7 +2645,8 @@ sub get_student_data { my $sth = $dbh->prepare($request); $sth->execute(); if ($dbh->err) { - &Apache::lonnet::logthis('error = '.$dbh->errstr()); + &Apache::lonnet::logthis('error 2 = '.$dbh->errstr()); + &Apache::lonnet::logthis('prepared then executed '.$/.$request); return undef; } my $dataset = $sth->fetchall_arrayref(); @@ -2018,21 +2655,43 @@ sub get_student_data { } } -sub get_optionresponse_data { - my ($students,$symb,$response,$courseid) = @_; +sub RD_student_id { return 0; } +sub RD_awarddetail { return 1; } +sub RD_response_eval { return 2; } +sub RD_response_eval_2 { return 3; } +sub RD_submission { return 4; } +sub RD_timestamp { return 5; } +sub RD_tries { return 6; } +sub RD_sname { return 7; } + +sub get_response_data { + my ($Sections,$Groups,$enrollment,$symb,$response,$courseid) = @_; return undef if (! defined($symb) || ! defined($response)); - $courseid = $ENV{'request.course.id'} if (! defined($courseid)); + $courseid = $env{'request.course.id'} if (! defined($courseid)); # &setup_table_names($courseid); 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 $response_id = &get_part_id($response); + if (! defined($response_id)) { + &Apache::lonnet::logthis('Unable to find id for '.$response.' in '.$courseid); + return undef; + } # my $dbh = &Apache::lonmysql::get_dbh(); return undef if (! defined($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 $request = 'SELECT '. 'a.student_id, a.awarddetail, a.response_specific_value, '. - 'a.submission, b.timestamp, c.tries '. + 'a.response_specific_value_2, a.submission, b.timestamp, '. + 'c.tries, d.student '. 'FROM '.$fulldump_response_table.' AS a '. 'LEFT JOIN '.$fulldump_timestamp_table.' AS b '. 'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '. @@ -2040,64 +2699,157 @@ sub get_optionresponse_data { 'LEFT JOIN '.$fulldump_part_table.' AS c '. 'ON a.symb_id=c.symb_id AND a.student_id=c.student_id AND '. 'a.part_id=c.part_id AND a.transaction = c.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.response_id='.$response_id; - if (defined($students)) { - $request .= ' AND ('. - join(' OR ', map {'a.student_id='. - &get_student_id($_->{'username'}, - $_->{'domain'}) - } @$students - ).')'; + if (defined($student_requirements)) { + $limit .= ' AND '.$student_requirements; + } + if (defined($enrollment_requirements)) { + $limit .= ' AND '.$enrollment_requirements; + } + if (defined($group_limits)) { + $limit .= ' AND '.$group_limits; } - $request .= ' ORDER BY b.timestamp'; + $request .= $limit.' ORDER BY b.timestamp'; # &Apache::lonnet::logthis("request =\n".$request); my $sth = $dbh->prepare($request); $sth->execute(); if ($dbh->err) { - &Apache::lonnet::logthis('error = '.$dbh->errstr()); + &Apache::lonnet::logthis('error 3 = '.$dbh->errstr()); + &Apache::lonnet::logthis('prepared then executed '.$/.$request); return undef; } my $dataset = $sth->fetchall_arrayref(); if (ref($dataset) eq 'ARRAY' && scalar(@$dataset)>0) { + # Clear the \'s from around the submission + for (my $i =0;$i[$i]->[3] =~ s/(\'$|^\')//g; + } return $dataset; } } -sub get_response_time_data { - my ($students,$symb,$response,$courseid) = @_; + +sub RDs_awarddetail { return 3; } +sub RDs_submission { return 2; } +sub RDs_timestamp { return 1; } +sub RDs_tries { return 0; } +sub RDs_awarded { return 4; } +sub RDs_response_eval { return 5; } +sub RDs_response_eval_2 { return 6; } +sub RDs_part_award { return 7; } + +sub get_response_data_by_student { + my ($student,$symb,$response,$courseid) = @_; return undef if (! defined($symb) || ! defined($response)); - $courseid = $ENV{'request.course.id'} if (! defined($courseid)); + $courseid = $env{'request.course.id'} if (! defined($courseid)); # &setup_table_names($courseid); my $symb_id = &get_symb_id($symb); my $response_id = &get_part_id($response); # + my $student_id = &get_student_id($student->{'username'}, + $student->{'domain'}); + my @group_ids = &get_students_groupids($student_id); + # my $dbh = &Apache::lonmysql::get_dbh(); return undef if (! defined($dbh)); my $request = 'SELECT '. - 'a.student_id, a.awarddetail, b.timestamp '. + 'c.tries, b.timestamp, a.submission, a.awarddetail, c.awarded, '. + 'a.response_specific_value, a.response_specific_value_2, c.award '. 'FROM '.$fulldump_response_table.' AS a '. - 'NATURAL LEFT JOIN '.$fulldump_timestamp_table.' AS b '. -# 'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '. -# 'a.transaction = b.transaction '. + 'LEFT JOIN '.$fulldump_timestamp_table.' AS b '. + 'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '. + 'a.transaction = b.transaction '. + 'LEFT JOIN '.$fulldump_part_table.' AS c '. + 'ON a.symb_id=c.symb_id AND a.student_id=c.student_id AND '. + 'a.part_id=c.part_id AND a.transaction = c.transaction '. + 'LEFT JOIN '.$student_table.' AS d '. + 'ON a.student_id=d.student_id '. + 'LEFT JOIN '.$performance_table.' AS e '. + 'ON a.symb_id=e.symb_id AND a.part_id=e.part_id AND '. + 'a.student_id=e.student_id AND c.tries=e.tries '. 'WHERE '. - 'a.symb_id='.$symb_id.' AND a.response_id='.$response_id; - if (defined($students)) { - $request .= ' AND ('. - join(' OR ', map {'a.student_id='. - &get_student_id($_->{'username'}, - $_->{'domain'}) - } @$students - ).')'; + 'a.symb_id='.$symb_id.' AND a.response_id='.$response_id. + ' AND a.student_id='.$student_id.' ORDER BY b.timestamp'; +# &Apache::lonnet::logthis("request =\n".$request); + my $sth = $dbh->prepare($request); + $sth->execute(); + if ($dbh->err) { + &Apache::lonnet::logthis('error 4 = '.$dbh->errstr()); + &Apache::lonnet::logthis('prepared then executed '.$/.$request); + return undef; + } + my $dataset = $sth->fetchall_arrayref(); + if (ref($dataset) eq 'ARRAY' && scalar(@$dataset)>0) { + # Clear the \'s from around the submission + for (my $i =0;$i[$i]->[2] =~ s/(\'$|^\')//g; + } + return $dataset; + } + return undef; # error occurred +} + +sub RT_student_id { return 0; } +sub RT_awarded { return 1; } +sub RT_tries { return 2; } +sub RT_timestamp { return 3; } + +sub get_response_time_data { + my ($sections,$groups,$enrollment,$symb,$part,$courseid) = @_; + return undef if (! defined($symb) || + ! defined($part)); + $courseid = $env{'request.course.id'} if (! defined($courseid)); + # + &setup_table_names($courseid); + 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); + if (! defined($part_id)) { + &Apache::lonnet::logthis('Unable to find id for '.$part.' in '.$courseid); + return undef; + } + # + my $dbh = &Apache::lonmysql::get_dbh(); + return undef if (! defined($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 $request = 'SELECT '. + 'a.student_id, a.awarded, a.tries, b.timestamp '. + 'FROM '.$fulldump_part_table.' AS a '. + 'LEFT JOIN '.$fulldump_timestamp_table.' AS b '. + 'ON a.symb_id=b.symb_id AND a.student_id=b.student_id AND '. + 'a.transaction = b.transaction '. + 'LEFT JOIN '.$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='.$part_id; + if (defined($student_requirements)) { + $limit .= ' AND '.$student_requirements; + } + if (defined($enrollment_requirements)) { + $limit .= ' AND '.$enrollment_requirements; + } + if (defined($group_limits)) { + $limit .= ' AND '.$group_limits; } - $request .= ' ORDER BY b.timestamp'; + $request .= $limit.' ORDER BY b.timestamp'; # &Apache::lonnet::logthis("request =\n".$request); my $sth = $dbh->prepare($request); $sth->execute(); if ($dbh->err) { - &Apache::lonnet::logthis('error = '.$dbh->errstr()); + &Apache::lonnet::logthis('error 5 = '.$dbh->errstr()); + &Apache::lonnet::logthis('prepared then executed '.$/.$request); return undef; } my $dataset = $sth->fetchall_arrayref(); @@ -2112,6 +2864,94 @@ sub get_response_time_data { =pod +=item &get_student_scores($Sections,$Groups,$Symbs,$enrollment,$courseid) + +=cut + +################################################ +################################################ +sub get_student_scores { + my ($sections,$groups,$Symbs,$enrollment,$courseid,$starttime,$endtime) = @_; + $courseid = $env{'request.course.id'} if (! defined($courseid)); + &setup_table_names($courseid); + my $dbh = &Apache::lonmysql::get_dbh(); + return (undef) if (! defined($dbh)); + my $tmptable = $courseid.'_temp_'.time; + my $request = 'DROP TABLE IF EXISTS '.$tmptable; +# &Apache::lonnet::logthis('request = '.$/.$request); + $dbh->do($request); + # + my $symb_requirements; + if (defined($Symbs) && @$Symbs) { + $symb_requirements = '('. + join(' OR ', map{ "(a.symb_id='".&get_symb_id($_->{'symb'}). + "' AND a.part_id='".&get_part_id($_->{'part'}). + "')" + } @$Symbs).')'; + } + # + my ($student_requirements,$enrollment_requirements) = + &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'); + ## + $request = 'CREATE TEMPORARY TABLE IF NOT EXISTS '.$tmptable. + ' SELECT a.student_id,SUM(a.awarded*c.weight) AS score FROM '. + $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)) { + $request .= ' LEFT JOIN '.$student_table.' AS b ON a.student_id=b.student_id '; + } + if (defined($groups_join)) { + $request .= $groups_join; + } + if (defined($symb_requirements) || + defined($student_requirements) || + defined($enrollment_requirements) || + defined($group_limits) ) { + $request .= ' WHERE '; + } + if (defined($symb_requirements)) { + $request .= $symb_requirements.' AND '; + } + if (defined($student_requirements)) { + $request .= $student_requirements.' AND '; + } + if (defined($enrollment_requirements)) { + $request .= $enrollment_requirements.' AND '; + } + if (defined($time_requirements)) { + $request .= $time_requirements.' AND '; + } + $request =~ s/ AND $//; # Strip of the trailing ' AND '. + $request .= ' GROUP BY a.student_id'; +# &Apache::lonnet::logthis("request = \n".$request); + my $sth = $dbh->prepare($request); + $sth->execute(); + if ($dbh->err) { + &Apache::lonnet::logthis('error 6 = '.$dbh->errstr()); + &Apache::lonnet::logthis('prepared then executed '.$/.$request); + return undef; + } + $request = 'SELECT score,COUNT(*) FROM '.$tmptable.' GROUP BY score'; +# &Apache::lonnet::logthis("request = \n".$request); + $sth = $dbh->prepare($request); + $sth->execute(); + if ($dbh->err) { + &Apache::lonnet::logthis('error 7 = '.$dbh->errstr()); + &Apache::lonnet::logthis('prepared then executed '.$/.$request); + return undef; + } + my $dataset = $sth->fetchall_arrayref(); + return $dataset; +} + +################################################ +################################################ + +=pod + =item &setup_table_names() input: course id @@ -2127,7 +2967,7 @@ Cleans up the package variables for loca sub setup_table_names { my ($courseid) = @_; if (! defined($courseid)) { - $courseid = $ENV{'request.course.id'}; + $courseid = $env{'request.course.id'}; } # if (! defined($current_course) || $current_course ne $courseid) { @@ -2141,32 +2981,38 @@ sub setup_table_names { $have_read_student_table = 0; undef(%ids_by_student); undef(%students_by_id); + $have_read_groupnames_table = 0; + undef(%ids_by_groupname); # $current_course = $courseid; } # # Set up database names my $base_id = $courseid; - $symb_table = $base_id.'_'.'symb'; - $part_table = $base_id.'_'.'part'; - $student_table = $base_id.'_'.'student'; - $studentdata_table = $base_id.'_'.'studentdata'; - $performance_table = $base_id.'_'.'performance'; - $parameters_table = $base_id.'_'.'parameters'; + $symb_table = $base_id.'_'.'symb'; + $part_table = $base_id.'_'.'part'; + $student_table = $base_id.'_'.'student'; + $groupnames_table = $base_id.'_'.'groupnames'; + $students_groups_table = $base_id.'_'.'studentgroups'; + $performance_table = $base_id.'_'.'performance'; + $parameters_table = $base_id.'_'.'parameters'; $fulldump_part_table = $base_id.'_'.'partdata'; $fulldump_response_table = $base_id.'_'.'responsedata'; $fulldump_timestamp_table = $base_id.'_'.'timestampdata'; + $weight_table = $base_id.'_'.'weight'; # @Tables = ( $symb_table, $part_table, $student_table, - $studentdata_table, + $groupnames_table, + $students_groups_table, $performance_table, $parameters_table, $fulldump_part_table, $fulldump_response_table, $fulldump_timestamp_table, + $weight_table, ); return; } @@ -2200,14 +3046,14 @@ Retrieve the classist of a given class o information is returned from the classlist.db file and, if needed, from the students environment. -Optional arguments are $cid, $cdom, and $cnum (course id, course domain, -and course number, respectively). Any omitted arguments will be taken -from the current environment ($ENV{'request.course.id'}, -$ENV{'course.'.$cid.'.domain'}, and $ENV{'course.'.$cid.'.num'}). +Optional arguments are $cdom, and $cnum (course domain, +and course number, respectively). If either is ommitted the course +will be taken from the current environment ($env{'request.course.id'}, +$env{'course.'.$cid.'.domain'}, and $env{'course.'.$cid.'.num'}). Returns a reference to a hash which contains: keys '$sname:$sdom' - values [$sdom,$sname,$end,$start,$id,$section,$fullname,$status] + values [$sdom,$sname,$end,$start,$id,$section,$fullname,$status,$type,$lockedtype] The constant values CL_SDOM, CL_SNAME, CL_END, etc. can be used as indices into the returned list to future-proof clients against @@ -2226,12 +3072,17 @@ sub CL_ID { return 4; } sub CL_SECTION { return 5; } sub CL_FULLNAME { return 6; } sub CL_STATUS { return 7; } +sub CL_TYPE { return 8; } +sub CL_LOCKEDTYPE { return 9; } sub get_classlist { - my ($cid,$cdom,$cnum) = @_; - $cid = $cid || $ENV{'request.course.id'}; - $cdom = $cdom || $ENV{'course.'.$cid.'.domain'}; - $cnum = $cnum || $ENV{'course.'.$cid.'.num'}; + my ($cdom,$cnum) = @_; + 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 $now = time; # my %classlist=&Apache::lonnet::dump('classlist',$cdom,$cnum); @@ -2242,9 +3093,9 @@ sub get_classlist { } my ($sname,$sdom) = split(/:/,$student); my @Values = split(/:/,$info); - my ($end,$start,$id,$section,$fullname); + my ($end,$start,$id,$section,$fullname,$type,$lockedtype); if (@Values > 2) { - ($end,$start,$id,$section,$fullname) = @Values; + ($end,$start,$id,$section,$fullname,$type,$lockedtype) = @Values; } else { # We have to get the data ourselves ($end,$start) = @Values; $section = &Apache::lonnet::getsection($sdom,$sname,$cid); @@ -2259,14 +3110,13 @@ sub get_classlist { &Apache::lonnet::logthis('unable to retrieve environment '. 'for '.$sname.':'.$sdom); } else { - $fullname = &ProcessFullName(@info{qw/lastname generation - firstname middlename/}); + $fullname = &Apache::lonnet::format_name(@info{qw/firstname middlename lastname generation/},'lastname'); $id = $info{'id'}; } # Update the classlist with this students information if ($fullname ne 'not available') { - my $enrolldata = join(':',$end,$start,$id,$section,$fullname); - my $reply=&Apache::lonnet::cput('classlist', + my $enrolldata = join(':',$end,$start,$id,$section,$fullname); + my $reply=&Apache::lonnet::cput('classlist', {$student => $enrolldata}, $cdom,$cnum); if ($reply !~ /^(ok|delayed)/) { @@ -2281,19 +3131,100 @@ sub get_classlist { $status='Active'; } $classlist{$student} = - [$sdom,$sname,$end,$start,$id,$section,$fullname,$status]; + [$sdom,$sname,$end,$start,$id,$section,$fullname,$status,$type,$lockedtype]; } if (wantarray()) { return (\%classlist,['domain','username','end','start','id', - 'section','fullname','status']); + 'section','fullname','status','type','lockedtype']); } else { return \%classlist; } } +sub get_group_memberships { + my ($classlist,$cdom,$cnum) = @_; + 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,%groupmemberhash); + my $numgroups = &Apache::loncommon::coursegroups(\%curr_groups,$cdom, + $cnum); + if ($numgroups) { + %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) { + $studentgroups{'none'} ++; + } + } + } + return (\%classgroups,\%studentgroups); +} + +sub get_students_groups { + my ($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 -------------------------------------------- 1; __END__ -