--- loncom/interface/lonsearchcat.pm 2001/03/15 18:23:54 1.17 +++ loncom/interface/lonsearchcat.pm 2001/03/15 21:42:05 1.39 @@ -77,7 +77,10 @@ END } if ($ENV{'form.basicsubmit'} eq 'SEARCH') { - return &basicsearch($r,$ENV{'form.basicexp'}); + return &basicsearch($r,\%ENV); + } + elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') { + return &advancedsearch($r,\%ENV); } $scrout=''; # building a part of screen output @@ -416,55 +419,157 @@ sub selectbox { return $selout.''; } +# ------------------------------------------------ Performing a advanced search +sub advancedsearch { + my ($r,$envhash)=@_; + my %ENV=%{$envhash}; + + my $fillflag=0; + for my $field ('title','author','subject','keywords','url','version', + 'notes','abstract','mime','language','owner', + 'custommetadata') { + if (&filled($ENV{'form.basicexp'})) { + $fillflag++; + } + } + + unless ($fillflag) { + &output_blank_field_error($r); + return OK; + } + + 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); + + &output_results($r,$envhash,$reply); + return OK; +} + +# ---------------------------------------------------- see if a field is filled +sub filled { + my ($field)=@_; + if ($field=~/\S/) { + return 1; + } + else { + return 0; + } +} + # --------------------------------------------------- Performing a basic search sub basicsearch { - my ($r,$expression)=@_; + my ($r,$envhash)=@_; + my %ENV=%{$envhash}; + + unless (&filled($ENV{'form.basicexp'})) { + &output_blank_field_error($r); + return OK; + } - my $query=$expression; - $query="select * from metadata where concat(title,\" \",author) like '\%$expression\%'"; -# my $reply=&Apache::lonnet::reply("querysend:$query",'msul3'); + my $query=''; + my $concatarg=join('," ",', + ('title', 'author', 'subject', 'notes', 'abstract')); + + $query="select * from metadata where concat($concatarg) like '\%$ENV{'form.basicexp'}\%'"; my $reply=&Apache::lonnet::metadata_query($query); + &output_results($r,$envhash,$reply); + return OK; +} - my @results; +sub output_blank_field_error { + my ($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); + + $r->print(< + +The LearningOnline Network with CAPA +BEGINNING + $r->print(< + + +

Search Catalog

+
+$persistent + + +
+

Helpful Message

+

+Incorrect search query due to blank entry fields. +You need to fill in the relevant +fields on the search page in order for a query to be +processed. +

+ + +RESULTS +} - my $replyfile=''; - $reply=~/^([\.\w]+)$/; # must do since 'use strict' checks for tainting - $replyfile=$r->dir_config('lonDaemons').'/tmp/'.$1; - $reply=~/(.*?)\_/; - my $hostname=$1; - - { - while (1) { - last if -e $replyfile; - sleep 1; +# ----------------------------- format and output results based on a reply list +sub output_results { + my ($r,$envhash,@replylist)=@_; + my %ENV=%{$envhash}; + foreach my $reply (@replylist) { + + my @results; + + my $replyfile=''; + $reply=~/^([\.\w]+)$/; # must do since 'use strict' checks for tainting + $replyfile=$r->dir_config('lonDaemons').'/tmp/'.$1; + $reply=~/(.*?)\_/; + my $hostname=$1; + + { + while (1) { + last if -e $replyfile; + sleep 1; + } + # QUESTION: how should I handle this error condition.. + # I'm sure there is syntax elsewhere I can use.. + my $fh=Apache::File->new($replyfile) or + ($r->print('file cannot be opened') and return OK); + @results=<$fh>; } - # QUESTION: how should I handle this error condition.. - # I'm sure there is syntax elsewhere I can use.. - my $fh=Apache::File->new($replyfile) or - ($r->print('file cannot be opened') and return OK); - @results=<$fh>; - } - - my $compiledresult=''; - - foreach my $result (@results) { - my ($title,$author,$subject,$url,$keywords,$version, - $notes,$abstract,$mime,$lang, - $creationdate,$lastrevisiondate,$owner,$copyright - )=map {&Apache::lonnet::unescape($_)} (split(/\,/,$result)); - my $shortabstract=$abstract; - $shortabstract=substr($abstract,0,200) if length($abstract)>200; - $compiledresult.=<200; + $compiledresult.=< END - $compiledresult.=<
END - $compiledresult.=<URL: $url + $compiledresult.=<URL: $url
Title: $title
Author(s): $author
@@ -481,31 +586,31 @@ END Repository Location: $hostname

END -} + } - unless ($compiledresult) { - $compiledresult="There were no results that matched your query"; - } + unless ($compiledresult) { + $compiledresult="There were no results that matched your query"; + } - # 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); + } + } (keys %ENV); - $r->print(<print(< The LearningOnline Network with CAPA BEGINNING - $r->print(<print(< function select_data(title,url) { changeTitle(title); @@ -523,7 +628,7 @@ BEGINNING } SCRIPT - $r->print(<print(< @@ -537,15 +642,14 @@ $persistent

Search Query

-Basic search: $expression +Basic search: $ENV{'form.basicexp'}

Search Results

$compiledresult RESULTS - - return OK; + } } 1;