version 1.39, 2001/03/15 21:42:05
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version 1.43, 2001/03/20 12:21:56
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# Search Catalog |
# Search Catalog |
# |
# |
# 03/08/2001 Scott Harrison |
# 03/08/2001 Scott Harrison |
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# Scott Harrison: 03/12/2001, 03/13/2001, 03/14/2001, 03/15/2001, 03/19/2001 |
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# Scott Harrison: 03/20/2001 |
# |
# |
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# Functions |
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# |
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# handler(server reference) : interacts with the Apache server layer |
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# (for /adm/searchcat URLs) |
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# simpletextfield(name,value) : returns HTML formatted string for simple text |
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# field |
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# simplecheckbox(name,value) : returns HTML formatted string for simple |
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# checkbox |
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# searchphrasefield(title,name,value) : returns HTML formatted string for |
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# a search expression phrase field |
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# dateboxes(name, defaultmonth, defaultday, defaultyear) : returns HTML |
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# formatted string |
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# for a calendar date |
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# selectbox(title,name,value,%HASH=options) : returns HTML formatted string for |
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# a selection box field |
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# advancedsearch(server reference, environment reference) : perform a complex |
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# multi-field logical query |
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# filled(field) : determines whether a given field has been filled |
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# basicsearch(server reference, environment reference) : perform a simple |
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# single-field logical query |
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# output_blank_field_error(server reference) : outputs a message saying that |
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# more fields need to be filled in |
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# output_results(output mode, |
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# server reference, |
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# environment reference, |
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# reply list reference) : outputs results from search |
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# build_SQL_query(field name, logic) : builds a SQL query string from a |
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# logical expression with AND/OR keywords |
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# recursive_SQL_query_build(field name, reverse notation expression) : |
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# builds a SQL query string from a reverse notation expression |
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# logical expression with AND/OR keywords |
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package Apache::lonsearchcat; |
package Apache::lonsearchcat; |
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use strict; |
use strict; |
Line 10 use Apache::Constants qw(:common);
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Line 44 use Apache::Constants qw(:common);
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use Apache::lonnet(); |
use Apache::lonnet(); |
use Apache::File(); |
use Apache::File(); |
use CGI qw(:standard); |
use CGI qw(:standard); |
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use Text::Query; |
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my %language; |
my %language; |
my $scrout; |
my $scrout; |
Line 232 ENDDOCUMENT
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Line 267 ENDDOCUMENT
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# --------------------------------------------------------- Various form fields |
# --------------------------------------------------------- Various form fields |
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sub textfield { |
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my ($title,$name,$value)=@_; |
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return "\n<p><b>$title:</b><br>". |
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'<input type=text name="'.$name.'" size=80 value="'.$value.'">'; |
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} |
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sub simpletextfield { |
sub simpletextfield { |
my ($name,$value)=@_; |
my ($name,$value)=@_; |
return '<input type=text name="'.$name.'" size=20 value="'.$value.'">'; |
return '<input type=text name="'.$name.'" size=20 value="'.$value.'">'; |
Line 428 sub advancedsearch {
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Line 457 sub advancedsearch {
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for my $field ('title','author','subject','keywords','url','version', |
for my $field ('title','author','subject','keywords','url','version', |
'notes','abstract','mime','language','owner', |
'notes','abstract','mime','language','owner', |
'custommetadata') { |
'custommetadata') { |
if (&filled($ENV{'form.basicexp'})) { |
if (&filled($ENV{"form.$field"})) { |
$fillflag++; |
$fillflag++; |
} |
} |
} |
} |
Line 445 sub advancedsearch {
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Line 474 sub advancedsearch {
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$query="select * from metadata where concat(title) like '\%$ENV{'form.title'}\%'"; |
$query="select * from metadata where concat(title) like '\%$ENV{'form.title'}\%'"; |
my $reply=&Apache::lonnet::metadata_query($query); |
my $reply=&Apache::lonnet::metadata_query($query); |
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&output_results($r,$envhash,$reply); |
&output_results('Advanced',$r,$envhash,$reply); |
return OK; |
return OK; |
} |
} |
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Line 476 sub basicsearch {
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Line 505 sub basicsearch {
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$query="select * from metadata where concat($concatarg) like '\%$ENV{'form.basicexp'}\%'"; |
$query="select * from metadata where concat($concatarg) like '\%$ENV{'form.basicexp'}\%'"; |
my $reply=&Apache::lonnet::metadata_query($query); |
my $reply=&Apache::lonnet::metadata_query($query); |
&output_results($r,$envhash,$reply); |
&output_results('Basic',$r,$envhash,$reply); |
return OK; |
return OK; |
} |
} |
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Line 526 RESULTS
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Line 555 RESULTS
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# ----------------------------- format and output results based on a reply list |
# ----------------------------- format and output results based on a reply list |
sub output_results { |
sub output_results { |
my ($r,$envhash,@replylist)=@_; |
my ($mode,$r,$envhash,@replylist)=@_; |
my %ENV=%{$envhash}; |
my %ENV=%{$envhash}; |
foreach my $reply (@replylist) { |
foreach my $reply (@replylist) { |
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Line 641 onClick='self.close();'>
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Line 670 onClick='self.close();'>
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$persistent |
$persistent |
<hr> |
<hr> |
<h3>Search Query</h3> |
<h3>Search Query</h3> |
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RESULTS |
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if ($mode eq 'Basic') { |
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$r->print(<<RESULTS); |
<p> |
<p> |
<b>Basic search:</b> $ENV{'form.basicexp'} |
<b>Basic search:</b> $ENV{'form.basicexp'} |
</p> |
</p> |
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RESULTS |
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elsif ($mode eq 'Advanced') { |
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$r->print(<<RESULTS); |
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<p> |
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<b>Advanced search</b> |
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</p> |
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RESULTS |
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} |
<h3>Search Results</h3> |
<h3>Search Results</h3> |
$compiledresult |
$compiledresult |
</body> |
</body> |
Line 652 RESULTS
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Line 692 RESULTS
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} |
} |
} |
} |
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# ------------------------------------------------------------- build_SQL_query |
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sub build_SQL_query { |
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my ($field_name,$logic_statement)=@_; |
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my $q=new Text::Query('abc', |
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-parse => 'Text::Query::ParseAdvanced', |
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-build => 'Text::Query::Build'); |
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$q->prepare($statement); |
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my $matchexp=${$q}{'matchexp'}; chomp $matchexp; |
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my $sql_query=&recursive_SQL_query_build($field_name,$matchexp); |
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} |
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# - Recursively parse a reverse notation expression into a SQL query expression |
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sub recursive_SQL_query_build { |
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my ($dkey,$pattern)=@_; |
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my @matches=($pattern=~/(\[[^\]|\[]*\])/g); |
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return $pattern unless @matches; |
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foreach my $match (@matches) { |
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$match=~/\[ (\w+)\s(.*) \]/; |
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($key,$value)=($1,$2); |
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my $replacement=''; |
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if ($key eq 'literal') { |
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$replacement="($dkey like \"\%$value\%\")"; |
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} |
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elsif ($key eq 'and') { |
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$value=~/(.*[\"|\)]) ([|\(|\^].*)/; |
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$replacement="($1 AND $2)"; |
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} |
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elsif ($key eq 'or') { |
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$value=~/(.*[\"|\)]) ([|\(|\^].*)/; |
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$replacement="($1 OR $2)"; |
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} |
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substr($pattern, |
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index($pattern,$match), |
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length($match), |
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$replacement |
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); |
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} |
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&recursive_SQL_query_build($dkey,$pattern); |
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} |
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1; |
1; |
__END__ |
__END__ |