--- loncom/interface/lonsearchcat.pm 2001/03/20 11:45:21 1.42 +++ loncom/interface/lonsearchcat.pm 2001/03/27 13:25:41 1.82 @@ -31,8 +31,11 @@ # server reference, # environment reference, # reply list reference) : outputs results from search -# build_SQL_query() : builds a SQL query string from a logical expression -# with AND/OR keywords +# build_SQL_query(field name, logic) : builds a SQL query string from a +# logical expression with AND/OR keywords +# recursive_SQL_query_build(field name, reverse notation expression) : +# builds a SQL query string from a reverse notation expression +# logical expression with AND/OR keywords package Apache::lonsearchcat; @@ -48,6 +51,23 @@ my $scrout; my %metadatafields; my %cprtag; my %mimetag; +my $closebutton; +my $basicviewselect=< + + + + + +END +my $advancedviewselect=< + + + + + +END sub handler { my $r = shift; @@ -73,6 +93,10 @@ sub handler { END + $closebutton=< +END + # ------------------------------------------------ First, check out environment $metadatafields{'owner'}=$ENV{'user.name'}.'@'.$ENV{'user.domain'}; @@ -83,7 +107,7 @@ END { my $fh=Apache::File->new($r->dir_config('lonTabDir').'/language.tab'); map { - $_=~/(\w+)\s+([\w\s\-]+)/; + $_=~/(\w+)\s+([\w\s\-]+)/; chomp; $language{$1}=$2; } <$fh>; } @@ -93,7 +117,7 @@ END { my $fh=Apache::File->new($r->dir_config('lonIncludes').'/copyright.tab'); map { - $_=~/(\w+)\s+([\w\s\-]+)/; + $_=~/(\w+)\s+([\w\s\-]+)/; chomp; $cprtag{$1}=$2; } <$fh>; } @@ -103,7 +127,7 @@ END { my $fh=Apache::File->new($r->dir_config('lonTabDir').'/filetypes.tab'); map { - $_=~/(\w+)\s+(\w+)\s+([\w\s\-]+)/; + $_=~/(\w+)\s+(\w+)\s+([\w\s\-]+)/; chomp; $mimetag{$1}=".$1 $3"; } <$fh>; } @@ -205,9 +229,9 @@ LASTREVISIONDATEEND # ------------------------------------------- Compute customized metadata field $scrout.=< -LIMIT BY OTHER METADATA FIELDS: +LIMIT BY SPECIAL METADATA FIELDS: -For author-specific metadata, enter in an expression in the form of +For resource-specific metadata, enter in an expression in the form of key=value separated by operators such as AND or OR.
Example: grandmother=75 OR grandfather=85
@@ -215,6 +239,17 @@ CUSTOMMETADATA $scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'}); $scrout.=' initial users of this system do not need to worry about this option'; + $scrout.=< +SHOW SPECIAL METADATA FIELDS: + +Enter in a space-separated list of special metadata fields to show +in a fielded listing for each record result. +
+CUSTOMSHOW +$scrout.=&simpletextfield('customshow',$ENV{'form.customshow'}); +$scrout.=' initial users of this system do not need to worry about this option'; + # ---------------------------------------------------------------- Print screen $r->print(< @@ -243,17 +278,19 @@ ENDDOCUMENT $r->print(<Search historic archives
- - - + + +$closebutton +$basicviewselect

Advanced Search

$scrout

- - - + + +$closebutton +$advancedviewselect

@@ -266,14 +303,15 @@ ENDDOCUMENT sub simpletextfield { my ($name,$value)=@_; - return ''; + return ''; } sub simplecheckbox { my ($name,$value)=@_; my $checked=''; $checked="CHECKED" if $value eq 'on'; - return ''; + return ''; } sub searchphrasefield { @@ -285,7 +323,7 @@ END my $uctitle=uc($title); return "\n

$uctitle:". " $instruction
". - ''; + ''; } sub dateboxes { @@ -438,19 +476,31 @@ sub selectbox { my $selout="\n

$uctitle:". "
".''; } -# ------------------------------------------------ Performing a advanced search +# ----------------------------------------------- Performing an advanced search sub advancedsearch { my ($r,$envhash)=@_; my %ENV=%{$envhash}; my $fillflag=0; + # Clean up fields for safety + for my $field ('title','author','subject','keywords','url','version', + 'creationdatestart_month','creationdatestart_day', + 'creationdatestart_year','creationdateend_month', + 'creationdateend_day','creationdateend_year', + 'lastrevisiondatestart_month','lastrevisiondatestart_day', + 'lastrevisiondatestart_year','lastrevisiondateend_month', + 'lastrevisiondateend_day','lastrevisiondateend_year', + 'notes','abstract','mime','language','owner', + 'custommetadata','customshow') { + $ENV{"form.$field"}=~s/[^\w\s\(\)\=\-\"\']//g; + } for my $field ('title','author','subject','keywords','url','version', 'notes','abstract','mime','language','owner', 'custommetadata') { @@ -465,13 +515,66 @@ sub advancedsearch { } my $query=''; -# my $concatarg=join('," ",', -# ('title', 'author', 'subject', 'notes', 'abstract')); - $query="select * from metadata where concat(title) like '\%$ENV{'form.title'}\%'"; - my $reply=&Apache::lonnet::metadata_query($query); + my @queries; + # Go through logical expression AND/OR/NOT phrase fields. - &output_results($r,$envhash,$reply); + foreach my $field ('title','author','subject','notes','abstract','url', + 'keywords','version','owner') { + if ($ENV{'form.'.$field}) { + push @queries,&build_SQL_query($field,$ENV{'form.'.$field}); + } + } + if ($ENV{'form.language'} and $ENV{'form.language'} ne 'any') { + push @queries,"(language like \"\%$ENV{'form.language'}\%\")"; + } + if ($ENV{'form.mime'} and $ENV{'form.mime'} ne 'any') { + push @queries,"(mime like \"\%$ENV{'form.mime'}\%\")"; + } + if ($ENV{'form.copyright'} and $ENV{'form.copyright'} ne 'any') { + push @queries,"(copyright like \"\%$ENV{'form.copyright'}\%\")"; + } + my $datequery=&build_date_queries( + $ENV{'form.creationdatestart_month'}, + $ENV{'form.creationdatestart_day'}, + $ENV{'form.creationdatestart_year'}, + $ENV{'form.creationdateend_month'}, + $ENV{'form.creationdateend_day'}, + $ENV{'form.creationdateend_year'}, + $ENV{'form.lastrevisiondatestart_month'}, + $ENV{'form.lastrevisiondatestart_day'}, + $ENV{'form.lastrevisiondatestart_year'}, + $ENV{'form.lastrevisiondateend_month'}, + $ENV{'form.lastrevisiondateend_day'}, + $ENV{'form.lastrevisiondateend_year'}, + ); + if ($datequery=~/^Incorrect/) { + &output_date_error($r,$datequery); + return OK; + } + elsif ($datequery) { + push @queries,$datequery; + } + my $customquery=''; + if ($ENV{'form.custommetadata'}) { + $customquery=&build_custommetadata_query('custommetadata', + $ENV{'form.custommetadata'}); + } + if (@queries) { + $query=join(" AND ",@queries); + $query="select * from metadata where $query"; + my $reply=''; + unless ($customquery) { + $reply=&Apache::lonnet::metadata_query($query); + } + else { + $reply=&Apache::lonnet::metadata_query($query,$customquery); + } + &output_results('Advanced',$r,$envhash,$customquery,$reply); + } + else { + &output_results('Advanced',$r,$envhash,$query); + } return OK; } @@ -491,6 +594,11 @@ sub basicsearch { my ($r,$envhash)=@_; my %ENV=%{$envhash}; + # Clean up fields for safety + for my $field ('basicexp') { + $ENV{"form.$field"}=~s/[^\w\s\(\)\-]//g; + } + unless (&filled($ENV{'form.basicexp'})) { &output_blank_field_error($r); return OK; @@ -502,24 +610,15 @@ sub basicsearch { $query="select * from metadata where concat($concatarg) like '\%$ENV{'form.basicexp'}\%'"; my $reply=&Apache::lonnet::metadata_query($query); - &output_results($r,$envhash,$reply); + &output_results('Basic',$r,$envhash,$query,$reply); return OK; } +# ---------------- Message to output when there are not enough fields filled in sub output_blank_field_error { my ($r)=@_; # make query information persistent to allow for subsequent revision - my $persistent=''; - map { - if (/^form\./ && !/submit/) { - my $name=$_; - my $key=$name; - $name=~s/^form\.//; - $persistent.=< -END - } - } (keys %ENV); + my $persistent=&make_persistent(); $r->print(< @@ -535,8 +634,7 @@ BEGINNING $persistent - +$closebutton

Helpful Message

@@ -552,8 +650,10 @@ RESULTS # ----------------------------- format and output results based on a reply list sub output_results { - my ($r,$envhash,@replylist)=@_; + my ($mode,$r,$envhash,$query,@replylist)=@_; my %ENV=%{$envhash}; + my $compiledresult=''; + foreach my $reply (@replylist) { my @results; @@ -563,7 +663,7 @@ sub output_results { $replyfile=$r->dir_config('lonDaemons').'/tmp/'.$1; $reply=~/(.*?)\_/; my $hostname=$1; - + sleep 3; # temporary fix, need to check for completion and status { while (1) { last if -e $replyfile; @@ -576,15 +676,35 @@ sub output_results { @results=<$fh>; } - my $compiledresult=''; - + my $customshow=''; + my $extrashow=''; + if ($ENV{'form.customshow'}) { + $customshow=$ENV{'form.customshow'}; + $customshow=~s/[^\w\s]//g; + my @fields=map {"$_:"} + split(/\s+/,$customshow); + if ($customshow) { + $extrashow="

  • ".join("
  • ",@fields)."
\n"; + } + } + my $customdata=''; foreach my $result (@results) { + if ($result=~/^(custom\=.*)$/) { # grab all custom metadata + $customdata.=$result; + } + } + foreach my $result (@results) { + next if $result=~/^custom\=/; + chomp $result; + my @fields=map + {&Apache::lonnet::unescape($_)} + (split(/\,/,$result)); my ($title,$author,$subject,$url,$keywords,$version, $notes,$abstract,$mime,$lang, - $creationdate,$lastrevisiondate,$owner,$copyright - )=map {&Apache::lonnet::unescape($_)} (split(/\,/,$result)); + $creationdate,$lastrevisiondate,$owner,$copyright)=@fields; my $shortabstract=$abstract; $shortabstract=substr($abstract,0,200) if length($abstract)>200; + $fields[7]=$shortabstract; $compiledresult.=< END @@ -594,24 +714,34 @@ onClick="javascript:select_data('$title'
END - $compiledresult.=<URL: $url -
-Title: $title
-Author(s): $author
-Subject: $subject
-Keyword(s): $keywords
-Notes: $notes
-Abstract: $shortabstract
-MIME Type: $mimetag{$mime}
-Language: $language{$lang}
-Creation Date: $creationdate
-Last Revision Date: $lastrevisiondate
-Publisher/Owner: $owner
-Copyright/Distribution: $copyright
-Repository Location: $hostname -

-END + my $httphost=$ENV{'HTTP_HOST'}; + + my $viewselect; + if ($mode eq 'Basic') { + $viewselect=$ENV{'form.basicviewselect'}; + } + elsif ($mode eq 'Advanced') { + $viewselect=$ENV{'form.advancedviewselect'}; + } + + if ($viewselect eq 'Detailed Citation View') { + $compiledresult.=&detailed_citation_view(@fields, + $hostname,$httphost, + $extrashow); + } + elsif ($viewselect eq 'Summary View') { + $compiledresult.=&summary_view(@fields,$hostname,$httphost, + $extrashow); + } + elsif ($viewselect eq 'Fielded Format') { + $compiledresult.=&fielded_format_view(@fields,$hostname, + $httphost,$extrashow); + } + elsif ($viewselect eq 'XML/SGML') { + $compiledresult.=&xml_sgml_view(@fields,$hostname,$httphost, + $extrashow); + } + } unless ($compiledresult) { @@ -619,17 +749,7 @@ END } # make query information persistent to allow for subsequent revision - my $persistent=''; - map { - if (/^form\./ && !/submit/) { - my $name=$_; - my $key=$name; - $name=~s/^form\.//; - $persistent.=< -END - } - } (keys %ENV); + my $persistent=&make_persistent(); $r->print(< @@ -660,16 +780,30 @@ SCRIPT

Search Catalog

+$customdata - +$closebutton $persistent

Search Query

+RESULTS + if ($mode eq 'Basic') { + $r->print(< Basic search: $ENV{'form.basicexp'}

+RESULTS + } + elsif ($mode eq 'Advanced') { + $r->print(< +Advanced search +$query +

+RESULTS + } + $r->print(<Search Results $compiledresult @@ -680,8 +814,264 @@ RESULTS # ------------------------------------------------------------- build_SQL_query sub build_SQL_query { + my ($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 $sql_query; +} + +# ------------------------------------------------- build custom metadata query +sub build_custommetadata_query { + my ($field_name,$logic_statement)=@_; + my $q=new Text::Query('abc', + -parse => 'Text::Query::ParseAdvanced', + -build => 'Text::Query::BuildAdvancedString'); + $q->prepare($logic_statement); + my $matchexp=${$q}{'-parse'}{'-build'}{'matchstring'}; + # quick fix to change literal into xml tag-matching + # will eventually have to write a separate builder module + my $oldmatchexp=$matchexp; + $matchexp=~s/(\w+)\\\=(\w+)/\\\<$1\\\>\[\^\\\<\]\*$2\[\^\\\<\]\*\\\<\\\/$1\\\>/g; + return $matchexp; +} + +# - Recursively parse a reverse notation expression into a SQL query expression +sub recursive_SQL_query_build { + my ($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 \"\%$value\%\")"; + } + elsif ($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,$pattern); +} + +# ------------------------------------------------------ Detailed Citation View +sub detailed_citation_view { + my ($title,$author,$subject,$url,$keywords,$version, + $notes,$shortabstract,$mime,$lang, + $creationdate,$lastrevisiondate,$owner,$copyright, + $hostname,$httphost,$extrashow)=@_; + my $result=<$owner, last revised $lastrevisiondate +

$title

+

$author

+

+

+Subject: $subject
+Keyword(s): $keywords
+Notes: $notes
+MIME Type: $mimetag{$mime}
+Language: $language{$lang}
+Copyright/Distribution: $cprtag{$copyright}
+

+$extrashow +

+$shortabstract +

+END + return $result; +} + +# ---------------------------------------------------------------- Summary View +sub summary_view { + my ($title,$author,$subject,$url,$keywords,$version, + $notes,$shortabstract,$mime,$lang, + $creationdate,$lastrevisiondate,$owner,$copyright, + $hostname,$httphost,$extrashow)=@_; + my $result=<$author
+$title
+$owner -- $lastrevisiondate
+$cprtag{$copyright}
+$extrashow +

+END + return $result; +} + +# -------------------------------------------------------------- Fielded Format +sub fielded_format_view { + my ($title,$author,$subject,$url,$keywords,$version, + $notes,$shortabstract,$mime,$lang, + $creationdate,$lastrevisiondate,$owner,$copyright, + $hostname,$httphost,$extrashow)=@_; + my $result=<URL: $url +
+Title: $title
+Author(s): $author
+Subject: $subject
+Keyword(s): $keywords
+Notes: $notes
+MIME Type: $mimetag{$mime}
+Language: $language{$lang}
+Creation Date: $creationdate
+Last Revision Date: $lastrevisiondate
+Publisher/Owner: $owner
+Copyright/Distribution: $cprtag{$copyright}
+Repository Location: $hostname
+Abstract: $shortabstract
+$extrashow +

+END + return $result; +} + +# -------------------------------------------------------------------- XML/SGML +sub xml_sgml_view { + my ($title,$author,$subject,$url,$keywords,$version, + $notes,$shortabstract,$mime,$lang, + $creationdate,$lastrevisiondate,$owner,$copyright, + $hostname,$httphost,$extrashow)=@_; + my $result=< +<LonCapaResource> +<url>$url</url> +<title>$title</title> +<author>$author</author> +<subject>$subject</subject> +<keywords>$keywords</keywords> +<notes>$notes</notes> +<mimeInfo> +<mime>$mime</mime> +<mimetag>$mimetag{$mime}</mimetag> +</mimeInfo> +<languageInfo> +<language>$lang</language> +<languagetag>$language{$lang}</languagetag> +</languageInfo> +<creationdate>$creationdate</creationdate> +<lastrevisiondate>$lastrevisiondate</lastrevisiondate> +<owner>$owner</owner> +<copyrightInfo> +<copyright>$copyright</copyright> +<copyrighttag>$cprtag{$copyright}</copyrighttag> +</copyrightInfo> +<repositoryLocation>$hostname</repositoryLocation> +<shortabstract>$shortabstract</shortabstract> +</LonCapaResource> + +$extrashow +END + return $result; +} + +sub build_date_queries { + my ($cmonth1,$cday1,$cyear1,$cmonth2,$cday2,$cyear2, + $lmonth1,$lday1,$lyear1,$lmonth2,$lday2,$lyear2)=@_; + my @queries; + if ($cmonth1 or $cday1 or $cyear1 or $cmonth2 or $cday2 or $cyear2) { + unless ($cmonth1 and $cday1 and $cyear1 and + $cmonth2 and $cday2 and $cyear2) { + return "Incorrect entry for the creation date. You must specify ". + "a starting month, day, and year and an ending month, ". + "day, and year."; + } + my $cnumeric1=sprintf("%d%2d%2d",$cyear1,$cmonth1,$cday1); + $cnumeric1+=0; + my $cnumeric2=sprintf("%d%2d%2d",$cyear2,$cmonth2,$cday2); + $cnumeric2+=0; + if ($cnumeric1>$cnumeric2) { + return "Incorrect entry for the creation date. The starting ". + "date must occur before the ending date."; + } + my $cquery="(creationdate BETWEEN '$cyear1-$cmonth1-$cday1' AND '". + "$cyear2-$cmonth2-$cday2 23:59:59')"; + push @queries,$cquery; + } + if ($lmonth1 or $lday1 or $lyear1 or $lmonth2 or $lday2 or $lyear2) { + unless ($lmonth1 and $lday1 and $lyear1 and + $lmonth2 and $lday2 and $lyear2) { + return "Incorrect entry for the last revision date. You must ". + "specify a starting month, day, and year and an ending ". + "month, day, and year."; + } + my $lnumeric1=sprintf("%d%2d%2d",$lyear1,$lmonth1,$lday1); + $lnumeric1+=0; + my $lnumeric2=sprintf("%d%2d%2d",$lyear2,$lmonth2,$lday2); + $lnumeric2+=0; + if ($lnumeric1>$lnumeric2) { + return "Incorrect entry for the last revision date. The ". + "starting date must occur before the ending date."; + } + my $lquery="(lastrevisiondate BETWEEN '$lyear1-$lmonth1-$lday1' AND '". + "$lyear2-$lmonth2-$lday2 23:59:59')"; + push @queries,$lquery; + } + if (@queries) { + return join(" AND ",@queries); + } + return ''; +} +sub output_date_error { + my ($r,$message)=@_; + # make query information persistent to allow for subsequent revision + my $persistent=&make_persistent(); + + $r->print(< + +The LearningOnline Network with CAPA +BEGINNING + $r->print(< + + +

Search Catalog

+ +$persistent + +$closebutton +
+

Helpful Message

+

+$message +

+ + +RESULTS } +sub make_persistent { + my $persistent=''; + + map { + if (/^form\./ && !/submit/) { + my $name=$_; + my $key=$name; + $ENV{$key}=~s/\'//g; # do not mess with html field syntax + $name=~s/^form\.//; + $persistent.=< +END + } + } (keys %ENV); + return $persistent; +} 1; __END__