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Diff for /loncom/interface/lonsearchcat.pm between versions 1.37 and 1.47

version 1.37, 2001/03/15 20:59:00 version 1.47, 2001/03/21 01:03:06
Line 2 Line 2
 # Search Catalog  # Search Catalog
 #  #
 # 03/08/2001 Scott Harrison  # 03/08/2001 Scott Harrison
   # Scott Harrison: 03/12/2001, 03/13/2001, 03/14/2001, 03/15/2001, 03/19/2001
   # Scott Harrison: 03/20/2001
 #  #
   # Functions
   #
   # handler(server reference) : interacts with the Apache server layer
   #                             (for /adm/searchcat URLs)
   # simpletextfield(name,value) : returns HTML formatted string for simple text
   #                               field
   # simplecheckbox(name,value) : returns HTML formatted string for simple
   #                              checkbox
   # searchphrasefield(title,name,value) : returns HTML formatted string for
   #                                       a search expression phrase field
   # dateboxes(name, defaultmonth, defaultday, defaultyear) : returns HTML
   #                                                          formatted string
   #                                                          for a calendar date
   # selectbox(title,name,value,%HASH=options) : returns HTML formatted string for
   #                                             a selection box field
   # advancedsearch(server reference, environment reference) : perform a complex
   #                                  multi-field logical query
   # filled(field) : determines whether a given field has been filled
   # basicsearch(server reference, environment reference) : perform a simple
   #                               single-field logical query
   # output_blank_field_error(server reference) : outputs a message saying that
   #                                              more fields need to be filled in
   # output_results(output mode,
   #                server reference, 
   #                environment reference,
   #                reply list reference) : outputs results from search
   # 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;  package Apache::lonsearchcat;
   
 use strict;  use strict;
Line 10  use Apache::Constants qw(:common); Line 44  use Apache::Constants qw(:common);
 use Apache::lonnet();  use Apache::lonnet();
 use Apache::File();  use Apache::File();
 use CGI qw(:standard);  use CGI qw(:standard);
   use Text::Query;
   
 my %language;  my %language;
 my $scrout;  my $scrout;
 my %metadatafields;  my %metadatafields;
 my %cprtag;  my %cprtag;
 my %mimetag;  my %mimetag;
   my $closebutton;
   my $viewselect=<<END;
   <select name='view'>
   <option value='Detailed View'>Detailed View</option>
   <option value='Brief View'>Brief View</option>
   </select>
   END
   
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
Line 41  sub handler { Line 83  sub handler {
 <input type='hidden' name='catalogmode' value='interactive'>  <input type='hidden' name='catalogmode' value='interactive'>
 END  END
   
       $closebutton=<<END if $ENV{'form.catalogmode'} eq 'interactive';
   <input type="button" name="close" value="CLOSE" onClick="self.close()">
   END
   
 # ------------------------------------------------ First, check out environment  # ------------------------------------------------ First, check out environment
     $metadatafields{'owner'}=$ENV{'user.name'}.'@'.$ENV{'user.domain'};      $metadatafields{'owner'}=$ENV{'user.name'}.'@'.$ENV{'user.domain'};
   
Line 213  ENDDOCUMENT Line 259  ENDDOCUMENT
 <br>  <br>
 <input type="submit" name="basicsubmit" value="SEARCH">  <input type="submit" name="basicsubmit" value="SEARCH">
 <input type="reset" name="reset" value="RESET">  <input type="reset" name="reset" value="RESET">
 <input type="button" name="close" value="CLOSE" onClick="self.close()">  $closebutton
   $viewselect
 </p>  </p>
 <hr>  <hr>
 <h3>Advanced Search</h3>  <h3>Advanced Search</h3>
Line 221  $scrout Line 268  $scrout
 <p>  <p>
 <input type="submit" name="advancedsubmit" value="SEARCH">  <input type="submit" name="advancedsubmit" value="SEARCH">
 <input type="reset" name="reset" value="RESET">  <input type="reset" name="reset" value="RESET">
 <input type="button" name="close" value="CLOSE" onClick="self.close()">  $closebutton
   $viewselect
 </p>  </p>
 </form>  </form>
 </body>  </body>
Line 232  ENDDOCUMENT Line 280  ENDDOCUMENT
   
 # --------------------------------------------------------- Various form fields  # --------------------------------------------------------- Various form fields
   
 sub textfield {  
     my ($title,$name,$value)=@_;  
     return "\n<p><b>$title:</b><br>".  
            '<input type=text name="'.$name.'" size=80 value="'.$value.'">';  
 }  
   
 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 419  sub selectbox { Line 461  sub selectbox {
     return $selout.'</select>';      return $selout.'</select>';
 }  }
   
 # ------------------------------------------------ Performing a advanced search  # ----------------------------------------------- Performing an advanced search
 sub advancedsearch {  sub advancedsearch {
     my ($r,$envhash)=@_;      my ($r,$envhash)=@_;
     my %ENV=%{$envhash};      my %ENV=%{$envhash};
Line 428  sub advancedsearch { Line 470  sub advancedsearch {
     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 438  sub advancedsearch { Line 480  sub advancedsearch {
  return OK;   return OK;
     }      }
   
     $r->print(<<END);      my $query='';
 Advanced searching is not yet implemented.  
 END      my @queries;
       # Go through logical expression AND/OR/NOT phrase fields.
       foreach my $field ('title','author','subject','notes','abstract') {
    if ($ENV{'form.'.$field}) {
       push @queries,&build_SQL_query($field,$ENV{'form.'.$field});
    }
       }
       if (@queries) {
    $query="(" . (join(") and ("),@queries) . ")";
    $query="select * from metadata where $query";
    my $reply=&Apache::lonnet::metadata_query($query);
    &output_results('Advanced',$r,$envhash,$query,$reply);
       }
       else {
    &output_results('Advanced',$r,$envhash,$query);
       }
     return OK;      return OK;
 }  }
   
Line 465  sub basicsearch { Line 522  sub basicsearch {
  return OK;   return OK;
     }      }
   
     my $query=$ENV{'form.basicexp'};      my $query='';
     my $concatarg=join(',"    ",',      my $concatarg=join(',"    ",',
        ('title', 'author', 'subject', 'notes', 'abstract'));         ('title', 'author', 'subject', 'notes', 'abstract'));
   
     $query="select * from metadata where concat($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,$envhash,$query,$reply);
     return OK;      return OK;
 }  }
   
   # ---------------- Message to output when there are not enough fields filled in
 sub output_blank_field_error {  sub output_blank_field_error {
     my ($r)=@_;      my ($r)=@_;
     # make query information persistent to allow for subsequent revision      # make query information persistent to allow for subsequent revision
Line 504  BEGINNING Line 562  BEGINNING
 $persistent  $persistent
 <input type='button' value='Revise search request'  <input type='button' value='Revise search request'
 onClick='this.form.submit();'>  onClick='this.form.submit();'>
 <input type='button' value='CLOSE'  $closebutton
 onClick='self.close();'>  
 <hr>  <hr>
 <h3>Helpful Message</h3>  <h3>Helpful Message</h3>
 <p>  <p>
Line 521  RESULTS Line 578  RESULTS
   
 # ----------------------------- 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,$envhash,$query,@replylist)=@_;
     my %ENV=%{$envhash};      my %ENV=%{$envhash};
       my $compiledresult='';
   
     foreach my $reply (@replylist) {      foreach my $reply (@replylist) {
   
  my @results;   my @results;
Line 545  sub output_results { Line 604  sub output_results {
     @results=<$fh>;      @results=<$fh>;
  }   }
   
  my $compiledresult='';  
   
  foreach my $result (@results) {   foreach my $result (@results) {
     my ($title,$author,$subject,$url,$keywords,$version,      my ($title,$author,$subject,$url,$keywords,$version,
  $notes,$abstract,$mime,$lang,   $notes,$abstract,$mime,$lang,
Line 631  SCRIPT Line 688  SCRIPT
 <form method="post" action="/adm/searchcat">  <form method="post" action="/adm/searchcat">
 <input type='button' value='Revise search request'  <input type='button' value='Revise search request'
 onClick='this.form.submit();'>  onClick='this.form.submit();'>
 <input type='button' value='CLOSE'  $closebutton
 onClick='self.close();'>  
 $persistent  $persistent
 <hr>  <hr>
 <h3>Search Query</h3>  <h3>Search Query</h3>
   RESULTS
       if ($mode eq 'Basic') {
    $r->print(<<RESULTS);
 <p>  <p>
 <b>Basic search:</b> $ENV{'form.basicexp'}  <b>Basic search:</b> $ENV{'form.basicexp'}
 </p>  </p>
   RESULTS
       }
       elsif ($mode eq 'Advanced') {
    $r->print(<<RESULTS);
   <p>
   <b>Advanced search</b>
   $query
   </p>
   RESULTS
       }
    $r->print(<<RESULTS);
 <h3>Search Results</h3>  <h3>Search Results</h3>
 $compiledresult  $compiledresult
 </body>  </body>
Line 647  RESULTS Line 717  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;
   }
   
   # - 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);
   }
   
 1;  1;
 __END__  __END__
Removed from v.1.37  
changed lines
  Added in v.1.47

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