--- loncom/interface/lonsearchcat.pm 2004/05/10 18:59:18 1.227 +++ loncom/interface/lonsearchcat.pm 2005/02/02 22:02:41 1.237 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # Search Catalog # -# $Id: lonsearchcat.pm,v 1.227 2004/05/10 18:59:18 matthew Exp $ +# $Id: lonsearchcat.pm,v 1.237 2005/02/02 22:02:41 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -75,6 +75,8 @@ use Apache::lonhtmlcommon; use Apache::lonlocal; use LONCAPA::lonmetadata(); use HTML::Entities(); +use Parse::RecDescent; +use Apache::lonnavmaps; ###################################################################### ###################################################################### @@ -337,6 +339,29 @@ END &course_search($r); } elsif(($ENV{'form.phase'} eq 'basic_search') || ($ENV{'form.phase'} eq 'adv_search')) { + # + # We are running a search, try to parse it + my ($query,$customquery,$customshow,$libraries) = + (undef,undef,undef,undef); + my $pretty_string; + if ($ENV{'form.phase'} eq 'basic_search') { + ($query,$pretty_string,$libraries) = + &parse_basic_search($r,$closebutton,$hidden_fields); + return OK if (! defined($query)); + &make_persistent({ basicexp => $ENV{'form.basicexp'}}, + $persistent_db_file); + } else { # Advanced search + ($query,$customquery,$customshow,$libraries,$pretty_string) + = &parse_advanced_search($r,$closebutton,$hidden_fields); + return OK if (! defined($query)); + } + &make_persistent({ query => $query, + customquery => $customquery, + customshow => $customshow, + libraries => $libraries, + pretty_string => $pretty_string }, + $persistent_db_file); + # # Set up table if (! defined(&create_results_table())) { my $errorstring=&Apache::lonmysql::get_error(); @@ -364,29 +389,12 @@ Unable to properly store search informat END return OK; } - # - # We are running a search - my ($query,$customquery,$customshow,$libraries) = - (undef,undef,undef,undef); - my $pretty_string; - if ($ENV{'form.phase'} eq 'basic_search') { - ($query,$pretty_string,$libraries) = - &parse_basic_search($r,$closebutton,$hidden_fields); - } else { # Advanced search - ($query,$customquery,$customshow,$libraries,$pretty_string) - = &parse_advanced_search($r,$closebutton,$hidden_fields); - return OK if (! defined($query)); - } - &make_persistent({ query => $query, - customquery => $customquery, - customshow => $customshow, - libraries => $libraries, - pretty_string => $pretty_string }, - $persistent_db_file); ## ## Print out the frames interface ## - &print_frames_interface($r); + if (defined($query)) { + &print_frames_interface($r); + } } return OK; } @@ -441,12 +449,22 @@ my %alreadyseen; my %hash; my $totalfound; +sub make_symb { + my ($id)=@_; + my ($mapid,$resid)=split(/\./,$id); + my $map=$hash{'map_id_'.$mapid}; + my $res=$hash{'src_'.$id}; + my $symb=&Apache::lonnet::encode_symb($map,$resid,$res); + return $symb; +} + sub course_search { my $r=shift; my $bodytag=&Apache::loncommon::bodytag('Course Search'); my $pretty_search_string = ''.$ENV{'form.courseexp'}.''; my $search_string = $ENV{'form.courseexp'}; my @New_Words; + undef(%alreadyseen); if ($ENV{'form.crsrelated'}) { ($search_string,@New_Words) = &related_version($ENV{'form.courseexp'}); if (@New_Words) { @@ -456,29 +474,107 @@ sub course_search { } } my $fulltext=$ENV{'form.crsfulltext'}; + my $discuss=$ENV{'form.crsdiscuss'}; my @allwords=($search_string,@New_Words); $totalfound=0; $r->print('LON-CAPA Course Search'. - $bodytag.'
'.$pretty_search_string.'

'); + $bodytag.'
'.$pretty_search_string.'

'.&mt('Course content').':
'); $r->rflush(); # ======================================================= Go through the course - undef %alreadyseen; - %alreadyseen=(); my $c=$r->connection; if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.".db", &GDBM_READER(),0640)) { - foreach (keys %hash) { + foreach (sort(keys(%hash))) { if ($c->aborted()) { last; } - if (($_=~/^src\_(.+)$/) && (!$alreadyseen{$hash{$_}})) { - &checkonthis($r,$hash{$_},0,$hash{'title_'.$1},$fulltext, - @allwords); + if (($_=~/^src\_(.+)$/)) { + if ($hash{'randomout_'.$1} & !$ENV{'request.role.adv'}) { + next; + } + my $symb=&make_symb($1); + &checkonthis($r,$1,$hash{$_},0,&Apache::lonnet::gettitle($symb), + $fulltext,$symb,@allwords); } } untie(%hash); } unless ($totalfound) { - $r->print('

'.&mt('No resources found').'.

'); + $r->print('

'.&mt('No matches found in resources').'.

'); + } + +# Check discussions if requested + if ($discuss) { + my $totaldiscussions = 0; + $r->print('

'.&mt('Discussion postings').':
'); + my $navmap = Apache::lonnavmaps::navmap->new(); + my @allres=$navmap->retrieveResources(); + my %discussiontime = &Apache::lonnet::dump('discussiontimes', + $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}, + $ENV{'course.'.$ENV{'request.course.id'}.'.num'}); + foreach my $resource (@allres) { + my $result = ''; + my $applies = 0; + my $symb = $resource->symb(); + my $ressymb = $symb; + if ($symb =~ m#(___adm/\w+/\w+)/(\d+)/bulletinboard$#) { + $ressymb = 'bulletin___'.$2.$1.'/'.$2.'/bulletinboard'; + unless ($ressymb =~ m#bulletin___\d+___adm/wrapper#) { + $ressymb=~s#(bulletin___\d+___)#$1adm/wrapper/#; + } + } + if (defined($discussiontime{$ressymb})) { + my %contrib = &Apache::lonnet::restore($ressymb,$ENV{'request.course.id'}, + $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}, + $ENV{'course.'.$ENV{'request.course.id'}.'.num'}); + if ($contrib{'version'}) { + for (my $id=1;$id<=$contrib{'version'};$id++) { + unless (($contrib{'hidden'}=~/\.$id\./) || ($contrib{'deleted'}=~/\.$id\./)) { + if ($contrib{$id.':subject'}) { + $result .= $contrib{$id.':subject'}; + } + if ($contrib{$id.':message'}) { + $result .= $contrib{$id.':message'}; + } + if ($contrib{$id,':attachmenturl'}) { + if ($contrib{$id,':attachmenturl'} =~ m-/([^/]+)$-) { + $result .= $1; + } + } + $applies = &checkwords($result,$applies,@allwords); + } + } + } + } +# Does this discussion apply? + if ($applies) { + my ($map,$ind,$url)=&Apache::lonnet::decode_symb($ressymb); + my $disctype = &mt('resource'); + if ($url =~ m#/bulletinboard$#) { + if ($url =~m#^adm/wrapper/adm/.*/bulletinboard$#) { + $url =~s#^adm/wrapper##; + } + $disctype = &mt('bulletin board'); + } else { + $url = '/res/'.$url; + } + if ($url =~ /\?/) { + $url .= '&symb='; + } else { + $url .= '?symb='; + } + $url .= &Apache::lonnet::escape($resource->symb()); + my $title = $resource->compTitle(); + $r->print('
'. + ($title?$title:$url).'  - '.$disctype.'
'); + $totaldiscussions++; + } else { + $r->print(' .'); + } + } + unless ($totaldiscussions) { + $r->print('

'.&mt('No matches found in postings').'.

'); + } } + # =================================================== Done going through course $r->print(''); } @@ -486,33 +582,41 @@ sub course_search { # =============================== This pulls up a resource and its dependencies sub checkonthis { - my ($r,$url,$level,$title,$fulltext,@allwords)=@_; - $alreadyseen{$url}=1; + my ($r,$id,$url,$level,$title,$fulltext,$symb,@allwords)=@_; + $alreadyseen{$id}=1; + if (&Apache::loncommon::connection_aborted($r)) { return; } $r->rflush(); - my $result=&Apache::lonnet::metadata($url,'title').' '. - &Apache::lonnet::metadata($url,'subject').' '. - &Apache::lonnet::metadata($url,'abstract').' '. - &Apache::lonnet::metadata($url,'keywords'); - if (($url) && ($fulltext)) { - $result.=&Apache::lonnet::ssi_body($url); + + my $result=$title.' '; + if ($ENV{'request.role.adv'} || !$hash{'encrypted_'.$id}) { + $result.=&Apache::lonnet::metadata($url,'title').' '. + &Apache::lonnet::metadata($url,'subject').' '. + &Apache::lonnet::metadata($url,'abstract').' '. + &Apache::lonnet::metadata($url,'keywords'); + } + my ($extension)=($url=~/\.(\w+)$/); + if (&Apache::loncommon::fileembstyle($extension) eq 'ssi' && + ($url) && ($fulltext)) { + $result.=&Apache::lonnet::ssi_body($url.'?symb='.&Apache::lonnet::escape($symb)); } $result=~s/\s+/ /gs; - my $applies=0; - foreach (@allwords) { - if ($_=~/\w/) { - if ($result=~/$_/si) { - $applies++; - } - } - } + my $applies = 0; + $applies = &checkwords($result,$applies,@allwords); # Does this resource apply? if ($applies) { $r->print('
'); for (my $i=0;$i<=$level*5;$i++) { $r->print(' '); } - $r->print(''. - ($title?$title:$url).'
'); + my $href=$url; + if ($hash{'encrypted_'.$id} && !$ENV{'request.role.adv'}) { + $href=&Apache::lonenc::encrypted($href) + .'?symb='.&Apache::lonenc::encrypted($symb); + } else { + $href.='?symb='.&Apache::lonnet::escape($symb); + } + $r->print(''.($title?$title:$url). + '
'); $totalfound++; } elsif ($fulltext) { $r->print(' .'); @@ -522,12 +626,24 @@ sub checkonthis { my $dependencies= &Apache::lonnet::metadata($url,'dependencies'); foreach (split(/\,/,$dependencies)) { - if (($_=~/^\/res\//) && (!$alreadyseen{$_})) { - &checkonthis($r,$_,$level+1,'',$fulltext,@allwords); + if (($_=~/^\/res\//) && (!$alreadyseen{$id})) { + &checkonthis($r,$id,$_,$level+1,'',$fulltext,undef,@allwords); } } } +sub checkwords { + my ($result,$applies,@allwords) = @_; + foreach (@allwords) { + if ($_=~/\w/) { + if ($result=~/$_/si) { + $applies++; + } + } + } + return $applies; +} + sub untiehash { if (tied(%hash)) { untie(%hash); @@ -563,24 +679,24 @@ sub print_basic_search_form { my ($r,$closebutton,$hidden_fields) = @_; my $result = ($ENV{'form.catalogmode'} ne 'groupsearch'); my $bodytag=&Apache::loncommon::bodytag('Search'). - &Apache::lonhtmlcommon::breadcrumbs(undef,'Searching','Searching', + &Apache::lonhtmlcommon::breadcrumbs(undef,'Searching','Search_Basic', undef,undef, $ENV{'form.catalogmode'} ne 'groupsearch'); my $scrout = &search_html_header().$bodytag; if (&Apache::lonnet::allowed('bre',$ENV{'request.role.domain'})) { # Define interface components - my $userelatedwords= + my $userelatedwords= ''; + my $onlysearchdomain=''; my $adv_search_link = ''. - &Apache::lonhtmlcommon::textbox('basicexp', - $ENV{'form.basicexp'},50).'
'. + &Apache::lonhtmlcommon::textbox + ('basicexp', + &HTML::Entities::encode($ENV{'form.basicexp'},'<>&"'),50 + ). + '
'. ''.&searchhelp().''.''. ''. ''.(' 'x3).$adv_search_link.''.'
'. @@ -613,12 +732,6 @@ sub print_basic_search_form { '
'. ''.$/; # -# $scrout .= ''. -# ''. -# $userelatedwords.(' 'x3). -# $onlysearchdomain.(' 'x2).$adv_search_link. -# ''. -# ''.$/; $scrout .= ''. ''. ' 'Course Search', 'note' => 'Enter terms or phrases, then press "Search" below', 'use' => 'use related words', - 'full' =>'fulltext search (time consuming)' + 'full' =>'fulltext search (time consuming)', + 'disc' => 'search discussion postings (resources and bulletin boards)', ); $scrout.=(< @@ -659,10 +773,14 @@ ENDCOURSESEARCH my $relcheckbox = &Apache::lonhtmlcommon::checkbox('crsrelated', $ENV{'form.crsrelated'}); + my $discheckbox = + &Apache::lonhtmlcommon::checkbox('crsdiscuss', + $ENV{'form.crsrelated'}); $scrout.=(< -$relcheckbox $lt{'use'} -$crscheckbox $lt{'full'} + + +

 

@@ -693,8 +811,9 @@ Prints the advanced search form. sub print_advanced_search_form{ my ($r,$closebutton,$hidden_fields) = @_; my $bodytag=&Apache::loncommon::bodytag('Advanced Catalog Search'). - &Apache::lonhtmlcommon::breadcrumbs(undef,'Searching','Searching', - undef,undef, + &Apache::lonhtmlcommon::breadcrumbs(undef,'Searching', + 'Search_Advanced', + undef,undef, $ENV{'form.catalogmode'} ne 'groupsearch'); my %lt=&Apache::lonlocal::texthash('srch' => 'Search', 'reset' => 'Reset', @@ -776,7 +895,7 @@ ENDHEADER $scrout.=''. &titlefield(&mt('Copyright/Distribution')).''. &Apache::lonmeta::selectbox('copyright', - '',, + $ENV{'form.copyright'}, \&Apache::loncommon::copyrightdescription, ( undef, &Apache::loncommon::copyrightids) @@ -784,7 +903,7 @@ ENDHEADER $scrout.=''. &titlefield(&mt('Language')).''. &Apache::lonmeta::selectbox('language', - 'notset',, + $ENV{'form.language'}, \&Apache::loncommon::languagedescription, ('any',&Apache::loncommon::languageids) ).''; @@ -999,7 +1118,7 @@ Outputs: return little blurb on how to e ###################################################################### ###################################################################### sub searchhelp { - return &mt('Enter terms or phrases separated by AND, OR, or NOT'); + return &mt('Enter words and quoted phrases'); } ###################################################################### @@ -1196,7 +1315,7 @@ sub parse_advanced_search { my @StatsFields = &statfields(); my @EvalFields = &evalfields(); my $fillflag=0; - my $pretty_search_string = "
\n"; + my $pretty_search_string = ""; # Clean up fields for safety for my $field (@BasicFields, 'creationdatestart_month','creationdatestart_day', @@ -1206,7 +1325,6 @@ sub parse_advanced_search { 'lastrevisiondatestart_year','lastrevisiondateend_month', 'lastrevisiondateend_day','lastrevisiondateend_year') { $ENV{'form.'.$field}=~s/[^\w\/\s\(\)\=\-\"\']//g; - $ENV{'form.'.$field}=~s/(not\s*$|^\s*(and|or)|)//gi; } foreach ('mode','form','element') { # is this required? Hmmm. @@ -1251,21 +1369,29 @@ sub parse_advanced_search { # Evaluate logical expression AND/OR/NOT phrase fields. foreach my $field (@BasicFields) { next if (!defined($ENV{'form.'.$field}) || $ENV{'form.'.$field} eq ''); - foreach my $searchphrase(&process_phrase_input($ENV{'form.'.$field})){ - $pretty_search_string .= $font."$field
contains ". - $searchphrase.""; + my ($error,$SQLQuery) = + &process_phrase_input($ENV{'form.'.$field}, + $ENV{'form.'.$field.'_related'},$field); + if (defined($error)) { + &output_unparsed_phrase_error($r,$closebutton,'phase=disp_adv', + $hidden_fields,$field); + return; + } else { + $pretty_search_string .= + $font.$field.': '.$ENV{'form.'.$field}; if ($ENV{'form.'.$field.'_related'}) { - my @New_Words; - ($searchphrase,@New_Words) = &related_version($searchphrase); - if (@New_Words) { - $pretty_search_string .= " with related words: ". - "@New_Words."; + my @Words = + &Apache::loncommon::get_related_words + ($ENV{'form.'.$field}); + if (@Words) { + $pretty_search_string.= ' with related words: '. + join(', ',@Words[0..4]); } else { - $pretty_search_string .= " with no related words."; + $pretty_search_string.= ' with related words.'; } } - $pretty_search_string .= "
\n"; - push @queries,&build_SQL_query($field,$searchphrase); + $pretty_search_string .= '
'; + push (@queries,$SQLQuery); } } # @@ -1282,7 +1408,8 @@ sub parse_advanced_search { } } if (defined($searchphrase)) { - push @queries,&build_SQL_query('mime',$searchphrase); + my ($error,$SQLsearch) = &process_phrase_input($searchphrase,0,'mime'); + push @queries,$SQLsearch; $pretty_search_string .=$font.'mime contains '. $searchphrase.'
'; } @@ -1314,7 +1441,7 @@ sub parse_advanced_search { push @queries,"(copyright like \"$ENV{'form.copyright'}\")"; $pretty_search_string.=$font."copyright = ". &Apache::loncommon::copyrightdescription($ENV{'form.copyright'}). - "
\n"; + "
\n"; } # # Statistics @@ -1402,11 +1529,11 @@ sub parse_advanced_search { $pretty_search_string .= $pretty_domains_string."
\n"; # if (@queries) { - $query="SELECT * FROM metadata WHERE ".join(" AND ",@queries); + $query="SELECT * FROM metadata WHERE (".join(") AND (",@queries).')'; } elsif ($customquery) { $query = ''; } -# &Apache::lonnet::logthis('query = '.$/.$query); + # &Apache::lonnet::logthis('query = '.$/.$query); return ($query,$customquery,$customshow,$libraries_to_query, $pretty_search_string); } @@ -1468,7 +1595,7 @@ sub parse_basic_search { # # Clean up fields for safety for my $field ('basicexp') { - $ENV{"form.$field"}=~s/[^\w\s\(\)\-]//g; + $ENV{"form.$field"}=~s/[^\w\s\'\"\!\(\)\-]//g; } foreach ('mode','form','element') { # is this required? Hmmm. @@ -1481,36 +1608,28 @@ sub parse_basic_search { # # Check to see if enough of a query is filled in my $search_string = $ENV{'form.basicexp'}; - $search_string =~ s/(not\s*$|^\s*(and|or)|)//gi; if (! &filled($search_string)) { &output_blank_field_error($r,$closebutton,'phase=disp_basic'); return OK; } - my $pretty_search_string=''; + my $pretty_search_string=$search_string; my @Queries; - my $concatarg=join(',', - ('title', 'author', 'subject', 'notes', 'abstract', - 'keywords')); - foreach my $search (&process_phrase_input($search_string)){ - if ($ENV{'form.related'}) { - $pretty_search_string .= ' and
' if ($pretty_search_string ne ''); - $pretty_search_string .= ''.$search.''; - my @New_Words; - ($search,@New_Words) = &related_version($search); - next if (! $search); - if (@New_Words) { - $pretty_search_string .= - " with related words: @New_Words"; - } - } else { - $pretty_search_string .= ' and ' if ($pretty_search_string ne ''); - $pretty_search_string .= ''.$search.''; - } - # - # Build SQL query string based on form page - push(@Queries, - &build_SQL_query('concat_ws(" ",'.$concatarg.')',$search)); + my $searchfield = 'concat_ws(" ",'.join(',', + ('title','author','subject', + 'notes','abstract','keywords') + ).')'; + my ($error,$SQLQuery) = &process_phrase_input($search_string, + $ENV{'form.related'}, + $searchfield); + if ($error) { + &output_unparsed_phrase_error($r,$closebutton,'phase=disp_basic', + '','basicexp'); + return; } + push(@Queries,$SQLQuery); + #foreach my $q (@Queries) { + # &Apache::lonnet::logthis(' '.$q); + #} my $final_query = 'SELECT * FROM metadata WHERE '.join(" AND ",@Queries); # if (defined($pretty_domains_string) && $pretty_domains_string ne '') { @@ -1518,40 +1637,189 @@ sub parse_basic_search { } $pretty_search_string .= "
\n"; $pretty_search_string =~ s:^
and ::; -# &Apache::lonnet::logthis($final_query); + # &Apache::lonnet::logthis($final_query); return ($final_query,$pretty_search_string, $libraries_to_query); } + +############################################################### +############################################################### + +my @Phrases; + +sub concat { + my ($item) = @_; + my $results = ''; + foreach (@$item) { + if (ref($_) eq 'ARRAY') { + $results .= join(' ',@$_); + } + } + return $results; +} + sub process_phrase_input { - my ($phrase)=@_; - my @Phrases; - # &Apache::lonnet::logthis('phrase = :'.$phrase.':'); - my $in_quotes = 0; - my @Words = split(/\s+/,$phrase); - foreach my $word (@Words) { - $word =~ s/(\w+)\"(\w+)/$1$2/g; - if ($in_quotes) { - if ($word =~ s/(\")$//) { - $in_quotes = 0; + my ($phrase,$related,$field)=@_; + #&Apache::lonnet::logthis('phrase = :'.$phrase.':'); + my $grammar = <<'ENDGRAMMAR'; + searchphrase: + expression /^\Z/ { + # &Apache::lonsearchcat::print_item(\@item,0); + [@item]; + } + expression: + phrase(s) { + [@item]; + } + phrase: + orword { + [@item]; + } + | andword { + [@item]; + } + | minusword { + unshift(@::Phrases,$item[1]->[0]); + unshift(@::Phrases,$item[1]->[1]); + [@item]; + } + | word { + unshift(@::Phrases,$item[1]); + [@item]; + } + # + orword: + word 'OR' phrase { + unshift(@::Phrases,'OR'); + unshift(@::Phrases,$item[1]); + [@item]; + } + | word 'or' phrase { + unshift(@::Phrases,'OR'); + unshift(@::Phrases,$item[1]); + [@item]; + } + | minusword 'OR' phrase { + unshift(@::Phrases,'OR'); + unshift(@::Phrases,$item[1]->[0]); + unshift(@::Phrases,$item[1]->[1]); + [@item]; + } + | minusword 'or' phrase { + unshift(@::Phrases,'OR'); + unshift(@::Phrases,$item[1]->[0]); + unshift(@::Phrases,$item[1]->[1]); + [@item]; + } + andword: + word phrase { + unshift(@::Phrases,'AND'); + unshift(@::Phrases,$item[1]); + [@item]; + } + | minusword phrase { + unshift(@::Phrases,'AND'); + unshift(@::Phrases,$item[1]->[0]); + unshift(@::Phrases,$item[1]->[1]); + [@item]; + } + # + minusword: + '-' word { + [$item[2],'NOT']; + } + word: + "'" term(s) "'" { + &Apache::lonsearchcat::concat(\@item); + } + | '"' term(s) '"' { + &Apache::lonsearchcat::concat(\@item); + } + | term { + $item[1]; + } + term: + /[\w\Q:!@#$%^&*()+_=|{}<>,.;\\\/?\E]+/ { + $item[1]; + } +ENDGRAMMAR + # + # The end result of parsing the phrase with the grammar is an array + # @::Phrases. + # $phrase = "gene splicing" or cat -> "gene splicing","OR","cat" + # $phrase = "genetic engineering" -dna -> + # "genetic engineering","AND","NOT","dna" + # $phrase = cat or dog -poodle -> "cat","OR","dog","AND","NOT","poodle" + undef(@::Phrases); + my $p = new Parse::RecDescent($grammar); + if (! defined($p->searchphrase($phrase))) { + &Apache::lonnet::logthis('lonsearchcat:unable to process:'.$phrase); + return 'Unable to process phrase '.$phrase; + } + # + # Go through the phrases and make sense of them. + # Apply modifiers NOT OR and AND to the phrases. + my @NewPhrases; + while(@::Phrases) { + my $phrase = shift(@::Phrases); + # &Apache::lonnet::logthis('phrase = '.$phrase); + my $phrasedata; + if ($phrase =~ /^(NOT|OR|AND)$/) { + if ($phrase eq 'OR') { + $phrasedata->{'or'}++; + if (! @::Phrases) { $phrasedata = undef; last; } + $phrase = shift(@::Phrases); + } elsif ($phrase eq 'AND') { + $phrasedata->{'and'}++; + if (! @::Phrases) { $phrasedata = undef; last; } + $phrase = shift(@::Phrases); } - if ($Phrases[-1] ne '') { - $Phrases[-1] .= ' '; + if ($phrase eq 'NOT') { + $phrasedata->{'negate'}++; + if (! @::Phrases) { $phrasedata = undef; last; } + $phrase = shift(@::Phrases); } - $Phrases[-1] .= $word; + } + $phrasedata->{'phrase'} = $phrase; + if ($related) { + my @NewWords; + (undef,@NewWords) = &related_version($phrasedata->{'phrase'}); + $phrasedata->{'related_words'} = \@NewWords; + } + push(@NewPhrases,$phrasedata); + } + # + # Actually build the sql query from the phrases + my $SQLQuery; + foreach my $phrase (@NewPhrases) { + my $query; + if ($phrase->{'negate'}) { + $query .= $field.' NOT LIKE "%'.$phrase->{'phrase'}.'%"'; } else { - if ($word =~ s/^(\")//) { - $in_quotes=1; + $query .= $field.' LIKE "%'.$phrase->{'phrase'}.'%"'; + } + foreach my $related (@{$phrase->{'related_words'}}) { + if ($phrase->{'negate'}) { + $query .= ' AND '.$field.' NOT LIKE "%'.$related.'%"'; + } else { + $query .= ' OR '.$field.' LIKE "%'.$related.'%"'; } - push(@Phrases,$word); + } + if ($SQLQuery) { + if ($phrase->{'or'}) { + $SQLQuery .= ' OR ('.$query.')'; + } else { + $SQLQuery .= ' AND ('.$query.')'; + } + } else { + $SQLQuery = '('.$query.')'; } } # - #foreach my $p (@Phrases) { - # &Apache::lonnet::logthis(' subphrase = '.$p); - #} + # &Apache::lonnet::logthis("SQLQuery = $SQLQuery"); # - return @Phrases; + return undef,$SQLQuery; } ###################################################################### @@ -1581,30 +1849,6 @@ sub related_version { return $result,sort(@Words); } -###################################################################### -###################################################################### - -=pod - -=item &build_SQL_query() - -Builds a SQL query string from a logical expression with AND/OR keywords -using Text::Query and &recursive_SQL_query_builder() - -=cut - -###################################################################### -###################################################################### -sub build_SQL_query { - my ($field_name,$logic_statement)=@_; - my $q=new Text::Query('abc', - -parse => 'Text::Query::ParseAdvanced', - -build => 'Text::Query::Build'); - $q->prepare($logic_statement); - my $matchexp=${$q}{'matchexp'}; chomp $matchexp; - my $sql_query=&recursive_SQL_query_build($field_name,$matchexp); - return $sql_query; -} ###################################################################### ###################################################################### @@ -1639,47 +1883,6 @@ sub build_custommetadata_query { return $matchexp; } -###################################################################### -###################################################################### - -=pod - -=item &recursive_SQL_query_build() - -Recursively constructs an SQL query. Takes as input $dkey and $pattern. - -=cut - -###################################################################### -###################################################################### -sub recursive_SQL_query_build { - my ($dkey,$pattern)=@_; - my @matches=($pattern=~/(\[[^\]|\[]*\])/g); - return $pattern unless @matches; - foreach my $match (@matches) { - $match=~/\[ (\w+)\s(.*) \]/; - my ($key,$value)=($1,$2); - my $replacement=''; - if ($key eq 'literal') { - $replacement="($dkey LIKE \"\%$value\%\")"; - } elsif (lc($key) eq 'not') { - $value=~s/LIKE/NOT LIKE/; -# $replacement="($dkey not like $value)"; - $replacement="$value"; - } elsif ($key eq 'and') { - $value=~/(.*[\"|\)]) ([|\(|\^].*)/; - $replacement="($1 AND $2)"; - } elsif ($key eq 'or') { - $value=~/(.*[\"|\)]) ([|\(|\^].*)/; - $replacement="($1 OR $2)"; - } - substr($pattern, - index($pattern,$match), - length($match), - $replacement); - } - &recursive_SQL_query_build($dkey,$pattern); -} ###################################################################### ###################################################################### @@ -2156,12 +2359,16 @@ $bodytag
END - # Check to see if $pretty_string has more than one carriage return. - # Assume \n s are following
s and truncate the value. - # (there is probably a better way)... - my @Lines = split /
/,$pretty_string; + # Remove leading and trailing
+ $pretty_string =~ s:^\s*
::i; + $pretty_string =~ s:(
)*\s*$::im; + my @Lines = split("
",$pretty_string); + # I keep getting blank items at the end of the list, hence the following: + while ($Lines[-1] =~ /^\s*$/ && @Lines) { + pop(@Lines); + } if (@Lines > 2) { - $pretty_string = join '
',(@Lines[0..2],'....
'); + $pretty_string = join '
',(@Lines[0..2],'....
'); } $r->print(&mt("Search: [_1]",$pretty_string)); $r->rflush(); @@ -2254,9 +2461,10 @@ END # # Loop through the servers we have contacted but do not # have results from yet, looking for results. - while (my ($server,$status) = each(%Server_status)) { + foreach my $server (keys(%Server_status)) { last if ($connection->aborted()); &update_seconds($r); + my $status = $Server_status{$server}; if ($status eq 'con_lost') { delete ($Server_status{$server}); next; @@ -2451,10 +2659,74 @@ sub display_results { &hidden_field('persistent_db_id'). &hidden_field('start') ); + # + # Build sorting selector + my @field_order = ('default', + 'title', + 'author', + 'subject', + 'url', + 'keywords', + 'version', + 'language', + 'creationdate'=>, + 'lastrevisiondate', + 'owner', + 'copyright', + 'authorspace', + 'lowestgradeleve', + 'highestgradelevel', + 'standards', + 'count', + 'stdno', + 'avetries', + 'difficulty', + 'disc', + 'clear', + 'technical', + 'correct', + 'helpful', + 'depth', + ); + my %sort_fields = ('default' => 'Default', + 'title' => 'Title', + 'author' => 'Author', + 'subject' => 'Subject', + 'url' => 'URL', + 'keywords' => 'Keywords', + 'version' => 'Version', + 'language' => 'Language', + 'creationdate'=> 'Creation Date', + 'lastrevisiondate' => 'Last Revision Date', + 'owner' => 'Owner', + 'copyright' => 'Copyright', + 'authorspace' => 'Authorspace', + 'lowestgradeleve' => 'Lowest Grade Level', + 'highestgradelevel' => 'Highest Grade Level', + 'standards' => 'Standards', + 'count' => 'Number of Accesses', + 'stdno' => 'Students Attempting', + 'avetries' => 'Average Number of Tries', + 'difficulty' => 'Mean Degree of Difficulty', + 'disc' => 'Mean Degree of Discrimination', + 'clear' => 'Evaluation: Clear', + 'technical' => 'Evaluation: Technically Correct', + 'correct' => 'Evaluation: Material is Correct', + 'helpful' => 'Evaluation: Material is Helpful', + 'depth' => 'Evaluation: Material has Depth', + 'select_form_order' => \@field_order, + ); + + my $sortform = &mt('Sort by [_1]', + &Apache::loncommon::select_form($ENV{'form.sortfield'}, + 'sortfield', + %sort_fields)); ## ## Output links (if necessary) for 'prev' and 'next' pages. $r->print - ('
'. + ('
'. + $sortform. + ''. &prev_next_buttons($min,$ENV{'form.show'},$total_results). ''. &viewoptions().'
' @@ -2465,13 +2737,21 @@ sub display_results { ""); return; } else { - $r->print - ("
Results $min to $max out of $total_results
\n"); + $r->print('
'. + mt('Results [_1] to [_2] out of [_3]', + $min,$max,$total_results). + "
\n"); } ## ## Get results from MySQL table - my @Results = &Apache::lonmysql::get_rows($table, - 'id>='.$min.' AND id<='.$max); + my $sort_command = 'id>='.$min.' AND id<='.$max; + if ($ENV{'form.sortfield'} ne 'default' && + exists($sort_fields{$ENV{'form.sortfield'}})) { + $sort_command = $ENV{'form.sortfield'}.' IS NOT NULL '. + 'ORDER BY '.$ENV{'form.sortfield'}. + ' LIMIT '.($min-1).','.($max-$min); + } + my @Results = &Apache::lonmysql::get_rows($table,$sort_command); ## ## Loop through the results and output them. foreach my $row (@Results) { @@ -2988,7 +3268,7 @@ sub detailed_citation_view { } elsif (exists($field->{'format'}) && $field->{'format'} ne ''){ $result.= &mt($field->{'translate'}, sprintf($field->{'format'}, - $values{$field->{'name'}})).'
'."\n"; + $values{$field->{'name'}}))."
\n"; } else { if ($field->{'special'} eq 'url link') { $result.= @@ -3210,6 +3490,51 @@ sub filled { =pod +=item &output_unparsed_phrase_error() + +=cut + +###################################################################### +###################################################################### +sub output_unparsed_phrase_error { + my ($r,$closebutton,$parms,$hidden_fields,$field)=@_; + my $errorstring; + if ($field eq 'basicexp') { + $errorstring = &mt('Unable to understand the search phrase [_1]. Please modify your search.',$ENV{'form.basicexp'}); + } else { + $errorstring = &mt('Unable to understand the search phrase [_1]:[_2].',$field,$ENV{'form.'.$field}); + } + my $bodytag = &Apache::loncommon::bodytag('Search'); + my $heading = &mt('Unparsed Field'); + my $revise = &mt('Revise search request'); + # make query information persistent to allow for subsequent revision + $r->print(< + +The LearningOnline Network with CAPA + +$bodytag +
+$hidden_fields +$closebutton +
+

$heading

+

+$errorstring +

+

+$revise +

+ + +ENDPAGE +} + +###################################################################### +###################################################################### + +=pod + =item &output_blank_field_error() Output a complete page that indicates the user has not filled in enough @@ -3227,33 +3552,31 @@ $parms is extra information to include i ###################################################################### sub output_blank_field_error { my ($r,$closebutton,$parms,$hidden_fields)=@_; - my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1); - # make query information persistent to allow for subsequent revision - $r->print(<print(< The LearningOnline Network with CAPA -BEGINNING - $r->print(< $bodytag - -

Search Catalog

$hidden_fields -Revise search request  $closebutton
-

Unactionable search query.

+

$heading

-You did not fill in enough information for the search to be started. -You need to fill in relevant fields on the search page in order -for a query to be processed. +$errormsg +

+

+$revise 

-RESULTS +ENDPAGE + return; } ######################################################################