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Diff for /loncom/interface/lonsearchcat.pm between versions 1.119 and 1.122

version 1.119, 2002/05/22 16:21:50 version 1.122, 2002/06/19 19:40:38
Line 31 Line 31
 # 10/12,10/14,10/15,10/16,11/28,11/29,12/10,12/12,12/16 Scott Harrison  # 10/12,10/14,10/15,10/16,11/28,11/29,12/10,12/12,12/16 Scott Harrison
 # YEAR=2002  # YEAR=2002
 # 1/17 Scott Harrison  # 1/17 Scott Harrison
   # 6/17 Matthew Hall
 #  #
 ###  ###############################################################################
   ###############################################################################
   
   =pod 
   
   =head1 NAME
   
   lonsearchcat
   
   =head1 SYNOPSIS
   
   Search interface to LON-CAPAs digital library
   
   =head1 DESCRIPTION
   
   This module enables searching for a distributed browseable catalog.
   
   This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   lonsearchcat presents the user with an interface to search the LON-CAPA
   digital library.  lonsearchcat also initiates the execution of a search
   by sending the search parameters to LON-CAPA servers.  The progress of 
   search (on a server basis) is displayed to the user in a seperate window.
   
   =head1 Internals
   
   =over 4
   
   =cut
   
 ###############################################################################  ###############################################################################
   ###############################################################################
   
 ##                                                                           ##  ##                                                                           ##
 ## ORGANIZATION OF THIS PERL MODULE                                          ##  ## ORGANIZATION OF THIS PERL MODULE                                          ##
 ##                                                                           ##  ##                                                                           ##
Line 60  use Apache::loncommon(); Line 92  use Apache::loncommon();
   
 # ---------------------------------------- variables used throughout the module  # ---------------------------------------- variables used throughout the module
   
   ######################################################################
   ######################################################################
   
   =pod 
   
   =item Global variables
   
   =over 4
   
   =item %hostdomains
   
   matches host name to host domain
   
   =item %hostips
   
   matches host name to host ip
   
   =item %hitcount
   
   stores number of hits per host
   
   =item $closebutton
   
   button that closes the search window
   
   =item $importbutton
   
   button to take the selecte results and go to group sorting
   
   =item $hidden
   
   holds 'hidden' html forms
   
   =item $scrout
   
   string that holds portions of the screen output
   
   =item $yourself
   
   allows for quickly limiting to oneself
   
   =item %hash   
   
   The ubiquitous database hash
   
   =item $basicviewselect and $advancedviewselect
   
   View selection forms.  These are not actually global and will be 
   moved soon.
   
   =item $diropendb 
   
   The full path to the (temporary) search database file.  This is set and
   used in &handler() and is also used in &output_results().
   
   =back 
   
   =cut
   
   ######################################################################
   ######################################################################
   
 # -- information holders  # -- information holders
 my %hostdomains; # matches host name to host domain  my %hostdomains; # matches host name to host domain
 my %hostips; # matches host name to host ip  my %hostips;     # matches host name to host ip
 my %hitcount; # stores number of hits per host  my %hitcount;    # stores number of hits per host
   
 # -- dynamically rendered interface components  # -- dynamically rendered interface components
 my $closebutton; # button that closes the search window  my $closebutton;  # button that closes the search window
 my $importbutton; # button to take the selected results and go to group sorting  my $importbutton; # button to take the selected results and go to group sorting
 my $hidden;  my $hidden;       # Holds 'hidden' html forms
   
 # -- miscellaneous variables  # -- miscellaneous variables
 my $scrout; # string that holds portions of the screen output  my $scrout;   # string that holds portions of the screen output
 my $yourself; # allows for quickly limiting to oneself  my $yourself; # allows for quickly limiting to oneself
 my %hash;  my %hash;     # database hash
   
 # ------------------------------------------ choices for different output views  # ------------------------------------------ choices for different output views
 # Detailed Citation View ---> sub detailed_citation_view  # Detailed Citation View ---> sub detailed_citation_view
Line 82  my %hash; Line 176  my %hash;
 # XML/SGML ---> sub xml_sgml_view  # XML/SGML ---> sub xml_sgml_view
 my $basicviewselect=<<END;  my $basicviewselect=<<END;
 <select name='basicviewselect'>  <select name='basicviewselect'>
 <option value='Detailed Citation View'>Detailed Citation View</option>  <option value='Detailed Citation View' selected="true">
   Detailed Citation View</option>
 <option value='Summary View'>Summary View</option>  <option value='Summary View'>Summary View</option>
 <option value='Fielded Format'>Fielded Format</option>  <option value='Fielded Format'>Fielded Format</option>
 <option value='XML/SGML'>XML/SGML</option>  <option value='XML/SGML'>XML/SGML</option>
Line 90  my $basicviewselect=<<END; Line 185  my $basicviewselect=<<END;
 END  END
 my $advancedviewselect=<<END;  my $advancedviewselect=<<END;
 <select name='advancedviewselect'>  <select name='advancedviewselect'>
 <option value='Detailed Citation View'>Detailed Citation View</option>  <option value='Detailed Citation View' selected="true">
   Detailed Citation View</option>
 <option value='Summary View'>Summary View</option>  <option value='Summary View'>Summary View</option>
 <option value='Fielded Format'>Fielded Format</option>  <option value='Fielded Format'>Fielded Format</option>
 <option value='XML/SGML'>XML/SGML</option>  <option value='XML/SGML'>XML/SGML</option>
 </select>  </select>
 END  END
   
   #------------------------------------------------------------- global variables
   my $diropendb = "";
   my $domain = "";
   
 # ----------------------------------------------------------------------- BEGIN  # ----------------------------------------------------------------------- BEGIN
   
   =pod
   
   =item BEGIN block
   
   Load %hostdomains and %hostips with data from lonnet.pm.  Only library
   servers are considered.
   
   =cut
   
 BEGIN {  BEGIN {
     {      foreach (keys (%Apache::lonnet::libserv)) {
  my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.          $hostdomains{$_}=$Apache::lonnet::hostdom{$_};
  '/hosts.tab');          $hostips{$_}=$Apache::lonnet::hostip{$_};
  while (<$fh>) {  
     $_=~/(\w+?)\:(\w+?)\:(\w+?)\:(.*)/; chomp;  
     if ($3 eq 'library') {  
  $hostdomains{$1}=$2;  
  $hostips{$1}=$4;  
     }  
  }  
     }      }
 }  }
   
 #------------------------------------------------------------- global variables  ######################################################################
 my $diropendb = "";  ######################################################################
 my $domain = "";  
   =pod 
   
   =item &handler() - main handler invoked by httpd child
   
   =cut
   
   ######################################################################
   ######################################################################
 # ----------------------------- Handling routine called via Apache and mod_perl  # ----------------------------- Handling routine called via Apache and mod_perl
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
Line 125  sub handler { Line 235  sub handler {
     $r->send_http_header;      $r->send_http_header;
     return OK if $r->header_only;      return OK if $r->header_only;
   
     $domain  = $r->dir_config('lonDefDomain');      my $domain  = $r->dir_config('lonDefDomain');
     $diropendb= "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_searchcat.db";      $diropendb= "/home/httpd/perl/tmp/".&Apache::lonnet::escape($domain).
               "\_".&Apache::lonnet::escape($ENV{'user.name'})."_searchcat.db";
   
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},      &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
              ['catalogmode','launch','acts','mode','form','element']);               ['catalogmode','launch','acts','mode','form','element']);
Line 135  sub handler { Line 246  sub handler {
  if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {   if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
     &start_fresh_session();      &start_fresh_session();
     untie %hash;      untie %hash;
  }   } else {
  else {  
     $r->print('<html><head></head><body>Unable to tie hash to db '.      $r->print('<html><head></head><body>Unable to tie hash to db '.
       'file</body></html>');        'file</body></html>');
     return OK;      return OK;
Line 368  ENDDOCUMENT Line 478  ENDDOCUMENT
     return OK;      return OK;
 }   } 
   
 # ------------------------------------------------------------- make persistent  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &make_persistent() 
   
   Returns a scalar which holds the current ENV{'form.*'} values in
   a 'hidden' html input tag.  
   
   =cut
   
   ######################################################################
   ######################################################################
   
 sub make_persistent {  sub make_persistent {
     my $persistent='';      my $persistent='';
           
Line 386  END Line 510  END
     return $persistent;      return $persistent;
 }  }
   
 # --------------------------------------------------------- Various form fields  
   ######################################################################
   ######################################################################
   
   =pod 
   
   =item HTML form building functions
   
   =over 4
   
   =item &simpletextfield() 
   
   Inputs: $name,$value,$size
   
   Returns a text input field with the given name, value, and size.  
   If size is not specified, a value of 20 is used.
   
   =item &simplecheckbox()
   
   Inputs: $name,$value
   
   Returns a simple check box with the given $name.
   If $value eq 'on' the box is checked.
   
   =item &searchphrasefield()
   
   Inputs: $title,$name,$value
   
   Returns html for a title line and an input field for entering search terms.
   the instructions "Enter terms or phrases separated by search operators such 
   as AND, OR, or NOT." are given following the title.  The entry field (which
   is where the $name and $value are used) is an 80 column simpletextfield.
   
   =item &dateboxes()
   
   =item &selectbox()
   
   =back 
   
   =cut
   
   ######################################################################
   ######################################################################
   
 sub simpletextfield {  sub simpletextfield {
     my ($name,$value)=@_;      my ($name,$value,$size)=@_;
     return '<input type=text name=\''.$name.      $size = 20 if (! defined($size));
    '\' size=20 value=\''.$value.'\' />';      return '<input type="text" name="'.$name.
           '" size="'.$size.'" value="'.$value.'" />';
 }  }
   
 sub simplecheckbox {  sub simplecheckbox {
     my ($name,$value)=@_;      my ($name,$value)=@_;
     my $checked='';      my $checked='';
     $checked="CHECKED" if $value eq 'on';      $checked="CHECKED" if $value eq 'on';
     return '<input type=checkbox name=\''.$name.'\' '. $checked . '>';      return '<input type="checkbox" name="'.$name.'" '. $checked . ' />';
 }  }
   
 sub searchphrasefield {  sub searchphrasefield {
     my ($title,$name,$value)=@_;      my ($title,$name,$value)=@_;
     my $instruction=<<END;      my $instruction=<<END;
 Enter terms or phrases separated by search operators such  Enter terms or phrases separated by search operators such as AND, OR, or NOT.
 as AND, OR, or NOT.  
 END  END
     my $uctitle=uc($title);      my $uctitle=uc($title);
     return "\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:</b>".      return "\n".
    "</FONT> $instruction<br />".          '<p><font color="#800000" face="helvetica"><b>'.$uctitle.':</b>'.
            '<input type=text name="'.$name.'" size=80 value=\''.$value.'\'>';          "</FONT> $instruction<br />".&simpletextfield($name,$value,80);
 }  }
   
 sub dateboxes {  sub dateboxes {
Line 460  END Line 626  END
 sub selectbox {  sub selectbox {
     my ($title,$name,$value,$anyvalue,$anytag,$functionref,@idlist)=@_;      my ($title,$name,$value,$anyvalue,$anytag,$functionref,@idlist)=@_;
     my $uctitle=uc($title);      my $uctitle=uc($title);
     my $selout="\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:".      my $selout="\n".'<p><font color="#800000" face="helvetica">'.
  "</b></font><br />".'<select name="'.$name.'">';          '<b>'.$uctitle.':</b></font><br /><select name="'.$name.'">';
     foreach ($anyvalue,@idlist) {      foreach ($anyvalue,@idlist) {
         $selout.='<option value=\''.$_.'\'';          $selout.='<option value="'.$_.'"';
         if ($_ eq $value and !/^any$/) {          if ($_ eq $value and !/^any$/) {
     $selout.=' selected>'.&{$functionref}($_).'</option>';      $selout.=' selected >'.&{$functionref}($_).'</option>';
  }   }
  elsif ($_ eq $value and /^$anyvalue$/) {   elsif ($_ eq $value and /^$anyvalue$/) {
     $selout.=' selected>'.$anytag.'</option>';      $selout.=' selected >'.$anytag.'</option>';
  }   }
         else {$selout.='>'.&{$functionref}($_).'</option>';}          else {$selout.='>'.&{$functionref}($_).'</option>';}
     }      }
     return $selout.'</select>';      return $selout.'</select>';
 }  }
   
 # ----------------------------------------------- Performing an advanced search  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &advancedsearch() 
   
   =cut
   
   ######################################################################
   ######################################################################
 sub advancedsearch {  sub advancedsearch {
     my ($r,$envhash)=@_;      my ($r,$envhash)=@_;
     my %ENV=%{$envhash};      my %ENV=%{$envhash};
   
     my $fillflag=0;      my $fillflag=0;
     # Clean up fields for safety      # Clean up fields for safety
     for my $field ('title','author','subject','keywords','url','version',      for my $field ('title','author','subject','keywords','url','version',
Line 511  sub advancedsearch { Line 686  sub advancedsearch {
  &output_blank_field_error($r);   &output_blank_field_error($r);
  return OK;   return OK;
     }      }
   
   
     # Turn the form input into a SQL-based query      # Turn the form input into a SQL-based query
     my $query='';      my $query='';
   
     my @queries;      my @queries;
     # Evaluate logical expression AND/OR/NOT phrase fields.      # Evaluate logical expression AND/OR/NOT phrase fields.
     foreach my $field ('title','author','subject','notes','abstract','url',      foreach my $field ('title','author','subject','notes','abstract','url',
Line 557  sub advancedsearch { Line 729  sub advancedsearch {
     elsif ($datequery) {      elsif ($datequery) {
  push @queries,$datequery;   push @queries,$datequery;
     }      }
   
     # Process form information for custom metadata querying      # Process form information for custom metadata querying
     my $customquery='';      my $customquery='';
     if ($ENV{'form.custommetadata'}) {      if ($ENV{'form.custommetadata'}) {
Line 597  sub advancedsearch { Line 768  sub advancedsearch {
     return 'Error.  Should not have gone to this point.';      return 'Error.  Should not have gone to this point.';
 }  }
   
 # --------------------------------------------------- Performing a basic search  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &basicsearch() 
   
   =cut
   
   ######################################################################
   ######################################################################
 sub basicsearch {  sub basicsearch {
     my ($r,$envhash)=@_;      my ($r,$envhash)=@_;
     my %ENV=%{$envhash};      my %ENV=%{$envhash};
Line 636  sub basicsearch { Line 817  sub basicsearch {
     return OK;      return OK;
 }  }
   
 # ------------------------------------------------------------- build_SQL_query  
   ######################################################################
   ######################################################################
   
   =pod 
   
   =item &build_SQL_query() 
   
   =cut
   
   ######################################################################
   ######################################################################
 sub build_SQL_query {  sub build_SQL_query {
     my ($field_name,$logic_statement)=@_;      my ($field_name,$logic_statement)=@_;
     my $q=new Text::Query('abc',      my $q=new Text::Query('abc',
Line 648  sub build_SQL_query { Line 840  sub build_SQL_query {
     return $sql_query;      return $sql_query;
 }  }
   
 # ------------------------------------------------- build custom metadata query  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &build_custommetadata_query() 
   
   =cut
   
   ######################################################################
   ######################################################################
 sub build_custommetadata_query {  sub build_custommetadata_query {
     my ($field_name,$logic_statement)=@_;      my ($field_name,$logic_statement)=@_;
       &Apache::lonnet::logthis("Entered build_custommetadata_query:".
                                $field_name.':'.$logic_statement);
     my $q=new Text::Query('abc',      my $q=new Text::Query('abc',
   -parse => 'Text::Query::ParseAdvanced',    -parse => 'Text::Query::ParseAdvanced',
   -build => 'Text::Query::BuildAdvancedString');    -build => 'Text::Query::BuildAdvancedString');
Line 658  sub build_custommetadata_query { Line 862  sub build_custommetadata_query {
     my $matchexp=${$q}{'-parse'}{'-build'}{'matchstring'};      my $matchexp=${$q}{'-parse'}{'-build'}{'matchstring'};
     # quick fix to change literal into xml tag-matching      # quick fix to change literal into xml tag-matching
     # will eventually have to write a separate builder module      # will eventually have to write a separate builder module
     my $oldmatchexp=$matchexp;      # wordone=wordtwo becomes\<wordone\>[^\<] *wordtwo[^\<]*\<\/wordone\>
     $matchexp=~s/(\w+)\\\=([\w\\\+]+)/\\\<$1\\\>\[\^\\\<\]\*$2\[\^\\\<\]\*\\\<\\\/$1\\\>/g;      $matchexp =~ s/(\w+)\\=([\w\\\+]+)?# wordone=wordtwo is changed to 
                    /\\<$1\\>?#           \<wordone\>
                      \[\^\\<\]?#        [^\<]         
                      \*$2\[\^\\<\]?#           *wordtwo[^\<]
                      \*\\<\\\/$1\\>?#                        *\<\/wordone\>
                      /g;
       &Apache::lonnet::logthis("match expression: ".$matchexp);
     return $matchexp;      return $matchexp;
 }  }
   
 # - Recursively parse a reverse notation expression into a SQL query expression  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &recursive_SQL_query_build() 
   
   =cut
   
   ######################################################################
   ######################################################################
 sub recursive_SQL_query_build {  sub recursive_SQL_query_build {
     my ($dkey,$pattern)=@_;      my ($dkey,$pattern)=@_;
     my @matches=($pattern=~/(\[[^\]|\[]*\])/g);      my @matches=($pattern=~/(\[[^\]|\[]*\])/g);
Line 697  sub recursive_SQL_query_build { Line 917  sub recursive_SQL_query_build {
     &recursive_SQL_query_build($dkey,$pattern);      &recursive_SQL_query_build($dkey,$pattern);
 }  }
   
 # ------------------------------------------------------------ Build date query  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &build_date_queries() 
   
   =cut
   
   ######################################################################
   ######################################################################
 sub build_date_queries {  sub build_date_queries {
     my ($cmonth1,$cday1,$cyear1,$cmonth2,$cday2,$cyear2,      my ($cmonth1,$cday1,$cyear1,$cmonth2,$cday2,$cyear2,
  $lmonth1,$lday1,$lyear1,$lmonth2,$lday2,$lyear2)=@_;   $lmonth1,$lday1,$lyear1,$lmonth2,$lday2,$lyear2)=@_;
Line 746  sub build_date_queries { Line 976  sub build_date_queries {
     return '';      return '';
 }  }
   
 # ----------------------------- format and output results based on a reply list  ######################################################################
 # There are two windows that this function writes to.  The main search  ######################################################################
 # window ("srch") has a listing of the results.  A secondary window ("popwin")  
 # gives the status of the network search (time elapsed, number of machines  =pod 
 # contacted, etc.)  
   =item &output_results() 
   
   Format and output results based on a reply list.
   There are two windows that this function writes to.  The main search
   window ("srch") has a listing of the results.  A secondary window ("popwin")
   gives the status of the network search (time elapsed, number of machines
   contacted, etc.)
   
   =cut
   
   ######################################################################
   ######################################################################
 sub output_results {  sub output_results {
     my $fnum; # search result counter      my $fnum; # search result counter
     my ($mode,$r,$envhash,$query,$replyref)=@_;      my ($mode,$r,$envhash,$query,$replyref)=@_;
Line 1210  RESULTS Line 1452  RESULTS
 RESULTS  RESULTS
 }  }
   
 # ------------------------------------------------------ Detailed Citation View  ######################################################################
   ######################################################################
   
   =pod 
   
   =item Metadata Viewing Functions
   
   Output is a HTML-ified string.
   Input arguments are title, author, subject, url, keywords, version,
   notes, short abstract, mime, language, creation date,
   last revision date, owner, copyright, hostname, httphost, and
   extra custom metadata to show.
   
   =over 4
   
   =item &detailed_citation_view() 
   
   =cut
   
   ######################################################################
   ######################################################################
 sub detailed_citation_view {  sub detailed_citation_view {
     my ($title,$author,$subject,$url,$keywords,$version,      my ($title,$author,$subject,$url,$keywords,$version,
  $notes,$shortabstract,$mime,$lang,   $notes,$shortabstract,$mime,$lang,
Line 1249  END Line 1511  END
     return $result;      return $result;
 }  }
   
 # ---------------------------------------------------------------- Summary View  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &summary_view() 
   
   =cut
   
   ######################################################################
   ######################################################################
 sub summary_view {  sub summary_view {
     my ($title,$author,$subject,$url,$keywords,$version,      my ($title,$author,$subject,$url,$keywords,$version,
  $notes,$shortabstract,$mime,$lang,   $notes,$shortabstract,$mime,$lang,
Line 1267  END Line 1539  END
     return $result;      return $result;
 }  }
   
 # -------------------------------------------------------------- Fielded Format  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &fielded_format_view() 
   
   =cut
   
   ######################################################################
   ######################################################################
 sub fielded_format_view {  sub fielded_format_view {
     my ($title,$author,$subject,$url,$keywords,$version,      my ($title,$author,$subject,$url,$keywords,$version,
  $notes,$shortabstract,$mime,$lang,   $notes,$shortabstract,$mime,$lang,
Line 1298  END Line 1580  END
     return $result;      return $result;
 }  }
   
 # -------------------------------------------------------------------- XML/SGML  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &xml_sgml_view() 
   
   =back 
   
   =cut
   
   ######################################################################
   ######################################################################
 sub xml_sgml_view {  sub xml_sgml_view {
     my ($title,$author,$subject,$url,$keywords,$version,      my ($title,$author,$subject,$url,$keywords,$version,
  $notes,$shortabstract,$mime,$lang,   $notes,$shortabstract,$mime,$lang,
Line 1340  END Line 1634  END
     return $result;      return $result;
 }  }
   
 # ---------------------------------------------------- see if a field is filled  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &filled() see if field is filled.
   
   =cut
   
   ######################################################################
   ######################################################################
 sub filled {  sub filled {
     my ($field)=@_;      my ($field)=@_;
     if ($field=~/\S/ && $field ne 'any') {      if ($field=~/\S/ && $field ne 'any') {
Line 1351  sub filled { Line 1655  sub filled {
     }      }
 }  }
   
 # ---------------- Message to output when there are not enough fields filled in  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &output_blank_field_error()
   
   =cut
   
   ######################################################################
   ######################################################################
 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 1385  processed. Line 1699  processed.
 RESULTS  RESULTS
 }  }
   
 # ----------------------------------------------------------- Output date error  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &output_date_error()
   
   Output a full html page with an error message.
   
   =cut
   
   ######################################################################
   ######################################################################
 sub output_date_error {  sub output_date_error {
     my ($r,$message)=@_;      my ($r,$message)=@_;
     # make query information persistent to allow for subsequent revision      # make query information persistent to allow for subsequent revision
     my $persistent=&make_persistent();      my $persistent=&make_persistent();
   
     $r->print(<<BEGINNING);      $r->print(<<RESULTS);
 <html>  <html>
 <head>  <head>
 <title>The LearningOnline Network with CAPA</title>  <title>The LearningOnline Network with CAPA</title>
 BEGINNING  
     $r->print(<<RESULTS);  
 </head>  </head>
 <body bgcolor="#ffffff">  <body bgcolor="#ffffff">
 <img align='right' src='/adm/lonIcons/lonlogos.gif' />  <img align='right' src='/adm/lonIcons/lonlogos.gif' />
Line 1416  $message Line 1740  $message
 RESULTS  RESULTS
 }  }
   
 # --------- settings whenever the user causes the search window to be launched  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &start_fresh_session()
   
   Cleans the global %hash by removing all fields which begin with
   'pre_' or 'store'.
   
   =cut
   
   ######################################################################
   ######################################################################
 sub start_fresh_session {  sub start_fresh_session {
     delete $hash{'mode_catalog'};      delete $hash{'mode_catalog'};
     foreach (keys %hash) {      foreach (keys %hash) {
Line 1429  sub start_fresh_session { Line 1766  sub start_fresh_session {
     }      }
 }  }
   
 # ----------------------------------------------- send javascript to popwin  ######################################################################
   ######################################################################
   
   =pod 
   
   =item &popwin_js() send javascript to popwin
   
   =cut
   
   ######################################################################
   ######################################################################
 sub popwin_js {  sub popwin_js {
     # Print javascript out to popwin, but make sure we dont generate      # Print javascript out to popwin, but make sure we dont generate
     # any javascript errors in doing so.      # any javascript errors in doing so.
Line 1444  END Line 1791  END
     $r->rflush();      $r->rflush();
 }  }
   
   ######################################################################
   ######################################################################
   
   =pod 
   
   =item &popwin_imgupdate()
   
   =cut
   
   ######################################################################
   ######################################################################
 sub popwin_imgupdate {  sub popwin_imgupdate {
     my ($r,$imgnum,$icon) = @_;      my ($r,$imgnum,$icon) = @_;
     &popwin_js($r,'popwin.document.img'.$imgnum.'.'.      &popwin_js($r,'popwin.document.img'.$imgnum.'.'.
Line 1454  sub popwin_imgupdate { Line 1812  sub popwin_imgupdate {
   
 __END__  __END__
   
 =head1 NAME  =pod
   
 Apache::lonsearchcat - mod_perl module for handling a searchable catalog  =back 
   
 =head1 SYNOPSIS  
   
 Invoked by /etc/httpd/conf/srm.conf:  
   
  <Location /adm/searchcat>  
  PerlAccessHandler       Apache::lonacc  
  SetHandler perl-script  
  PerlHandler Apache::lonsearchcat  
  ErrorDocument     403 /adm/login  
  ErrorDocument  500 /adm/errorhandler  
  </Location>  
   
 =head1 INTRODUCTION  
   
 This module enables searching for a distributed browseable catalog.  
   
 This is part of the LearningOnline Network with CAPA project  
 described at http://www.lon-capa.org.  
   
 =head1 BEGIN SUBROUTINE  
   
 This routine is only run once after compilation.  
   
 =over 4  =over 4
   
 =item *  
   
 Initializes %hostdomains and hostips hash table (for hosts.tab).  
   
 =back  
   
 =head1 HANDLER SUBROUTINE  =head1 HANDLER SUBROUTINE
   
 This routine is called by Apache and mod_perl.  This routine is called by Apache and mod_perl.
Line 1677  more fields need to be filled in Line 2006  more fields need to be filled in
   
 =item *  =item *
   
 output_date_error(server reference, error message) : outputs  output_date_error(server reference, error message) : 
 an error message specific to bad date format.  
   
 =back  =back
   
Removed from v.1.119  
changed lines
  Added in v.1.122

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