--- loncom/interface/lonsearchcat.pm 2001/12/13 14:00:37 1.112
+++ loncom/interface/lonsearchcat.pm 2002/07/28 20:02:14 1.145
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# Search Catalog
#
-# $Id: lonsearchcat.pm,v 1.112 2001/12/13 14:00:37 harris41 Exp $
+# $Id: lonsearchcat.pm,v 1.145 2002/07/28 20:02:14 matthew Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -28,19 +28,53 @@
# YEAR=2001
# 3/8, 3/12, 3/13, 3/14, 3/15, 3/19 Scott Harrison
# 3/20, 3/21, 3/22, 3/26, 3/27, 4/2, 8/15, 8/24, 8/25 Scott Harrison
-# 10/12,10/14,10/15,10/16,11/28,11/29,12/10,12/12 Scott Harrison
+# 10/12,10/14,10/15,10/16,11/28,11/29,12/10,12/12,12/16 Scott Harrison
+# YEAR=2002
+# 1/17 Scott Harrison
+# 6/17 Matthew Hall
#
-###
+###############################################################################
+###############################################################################
+
+=pod
+
+=head1 NAME
+
+lonsearchcat - LONCAPA Search Interface
+
+=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 ##
## ##
## 1. Modules used by this module ##
-## 2. Choices for different output views (detailed, summary, xml, etc) ##
-## 3. BEGIN block (to be run once after compilation) ##
-## 4. Handling routine called via Apache and mod_perl ##
-## 5. Other subroutines ##
+## 2. Variables used throughout the module ##
+## 3. handler subroutine called via Apache and mod_perl ##
+## 4. Other subroutines ##
## ##
###############################################################################
@@ -53,106 +87,156 @@ use Apache::lonnet();
use Apache::File();
use CGI qw(:standard);
use Text::Query;
+use DBI;
use GDBM_File;
use Apache::loncommon();
+use Apache::lonmysql();
# ---------------------------------------- variables used throughout the module
-# -- information holders
-# my %language; # holds contents of language.tab
-# my %cprtag; # holds contents of copyright.tab
-# my %mimetag; # holds contents of filetypes.tab
-my %hostdomains; # matches host name to host domain
-my %hostips; # matches host name to host ip
-my %hitcount; # stores number of hits per host
+######################################################################
+######################################################################
+
+=pod
+
+=item Global variables
+
+=over 4
+
+=item $importbutton
+
+button to take the select results and go to group sorting
+
+=item %groupsearch_db
+
+Database hash used to save values for the groupsearch RAT interface.
+
+=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().
+
+=item %Views
+
+Hash which associates an output view description with the function
+that produces it. Adding a new view type should be as easy as
+adding a line to the definition of this hash and making sure the function
+takes the proper parameters.
+
+=back
+
+=cut
+
+######################################################################
+######################################################################
# -- dynamically rendered interface components
-my $closebutton; # button that closes the search window
my $importbutton; # button to take the selected results and go to group sorting
# -- miscellaneous variables
-my $scrout; # string that holds portions of the screen output
-my $yourself; # allows for quickly limiting to oneself
-my %hash;
-
-# ------------------------------------------ choices for different output views
-# Detailed Citation View ---> sub detailed_citation_view
-# Summary View ---> sub summary_view
-# Fielded Format ---> sub fielded_format_view
-# XML/SGML ---> sub xml_sgml_view
-my $basicviewselect=<<END;
-<select name='basicviewselect'>
-<option value='Detailed Citation View'>Detailed Citation View</option>
-<option value='Summary View'>Summary View</option>
-<option value='Fielded Format'>Fielded Format</option>
-<option value='XML/SGML'>XML/SGML</option>
-</select>
-END
-my $advancedviewselect=<<END;
-<select name='advancedviewselect'>
-<option value='Detailed Citation View'>Detailed Citation View</option>
-<option value='Summary View'>Summary View</option>
-<option value='Fielded Format'>Fielded Format</option>
-<option value='XML/SGML'>XML/SGML</option>
-</select>
-END
+my %groupsearch_db; # database hash
+my $diropendb = ""; # db file
+# View Description Function Pointer
+my %Views = ("Detailed Citation View" => \&detailed_citation_view,
+ "Summary View" => \&summary_view,
+ "Fielded Format" => \&fielded_format_view,
+ "XML/SGML" => \&xml_sgml_view );
+my $persistent_db_file;
+my %persistent_db;
+my $hidden_fields;
+######################################################################
+######################################################################
-# ----------------------------------------------------------------------- BEGIN
-sub BEGIN {
- {
- my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
- '/hosts.tab');
- while (<$fh>) {
- $_=~/(\w+?)\:(\w+?)\:(\w+?)\:(.*)/; chomp;
- if ($3 eq 'library') {
- $hostdomains{$1}=$2;
- $hostips{$1}=$4;
- }
- }
- }
-}
+=pod
+
+=item &handler() - main handler invoked by httpd child
+
+=item Variables
+
+=over 4
-my $diropendb = "";
-my $domain = "";
+=item $hidden
-# ----------------------------- Handling routine called via Apache and mod_perl
+holds 'hidden' html forms
+
+=item $scrout
+
+string that holds portions of the screen output
+
+=back
+
+=cut
+
+######################################################################
+######################################################################
sub handler {
my $r = shift;
- untie %hash;
- &get_unprocessed_cgi();
-
+ #
+ untie %groupsearch_db if (tied(%groupsearch_db));
+ #
+ my $closebutton; # button that closes the search window
+ # This button is different for the RAT compared to
+ # normal invocation.
+ #
$r->content_type('text/html');
$r->send_http_header;
return OK if $r->header_only;
-
- $domain = $r->dir_config('lonDefDomain');
-
- $diropendb= "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_searchcat.db";
-
+ ##
+ ## Pick up form fields passed in the links.
+ ##
+ &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+ ['catalogmode','launch','acts','mode','form','element',
+ 'reqinterface','persistent_db_id','table']);
+ ##
+ ## Initialize global variables
+ ##
+ my $domain = $r->dir_config('lonDefDomain');
+ $diropendb= "/home/httpd/perl/tmp/".&Apache::lonnet::escape($domain).
+ "\_".&Apache::lonnet::escape($ENV{'user.name'})."_searchcat.db";
+ #
+ # set the name of the persistent database
+ # $ENV{'form.persistent_db_id'} can only have digits in it.
+ if (! exists($ENV{'form.persistent_db_id'}) ||
+ $ENV{'form.persistent_db_id'} =~ /\D/ ) {
+ $ENV{'form.persistent_db_id'} = time;
+ }
+ $persistent_db_file = "/home/httpd/perl/tmp/".
+ &Apache::lonnet::escape($domain).
+ '_'.&Apache::lonnet::escape($ENV{'user.name'}).
+ '_'.$ENV{'form.persistent_db_id'}.'_persistent_search.db';
+ #
+ # Read in the database. It should (hopefully) not be catastrophic to
+ # fail in this exercise.
+ if (-e $persistent_db_file) {
+ # Read in the previous values, if we can.
+ if (tie(%persistent_db,'GDBM_File',$persistent_db_file,
+ &GDBM_READER,0640)) {
+ &reconstruct_persistent_form_data($r);
+ untie (%persistent_db);
+ }
+ }
+ ##
+ ## Clear out old values from groupsearch database
+ ##
if ($ENV{'form.launch'} eq '1') {
- if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
+ if (tie(%groupsearch_db,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
&start_fresh_session();
- untie %hash;
- }
- else {
+ untie %groupsearch_db;
+ } else {
$r->print('<html><head></head><body>Unable to tie hash to db '.
'file</body></html>');
return OK;
}
}
-
-# ----------------------------------- configure dynamic components of interface
- my $hidden='';
+ ##
+ ## Configure dynamic components of interface
+ ##
+ $hidden_fields = '<input type="hidden" name="persistent_db_id" value="'.
+ $ENV{'form.persistent_db_id'}.'" />';
if ($ENV{'form.catalogmode'} eq 'interactive') {
- $hidden="<input type='hidden' name='catalogmode' value='interactive'>".
- "\n";
$closebutton="<input type='button' name='close' value='CLOSE' ".
"onClick='self.close()'>"."\n";
- }
- elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
- $hidden=<<END;
-<input type='hidden' name='catalogmode' value='groupsearch'>
-END
+ } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
$closebutton=<<END;
<input type='button' name='close' value='CLOSE' onClick='self.close()'>
END
@@ -161,64 +245,256 @@ END
onClick='javascript:select_group()'>
END
}
+ ##
+ ## Do a search, if needed.
+ ##
+ my $searchtype;
+ $searchtype = 'Basic' if ($ENV{'form.basicsubmit'} eq 'SEARCH');
+ $searchtype = 'Advanced' if ($ENV{'form.advancedsubmit'} eq 'SEARCH');
+ if ($searchtype) {
+ ##
+ ## make query information persistent to allow for subsequent revision
+ ##
+ tie(%persistent_db,'GDBM_File',$persistent_db_file,&GDBM_WRCREAT,0640);
+ &make_persistent(\%ENV);
+ untie(%persistent_db);
+ #
+ # We are running a search
+ my ($query,$customquery,$customshow,$libraries) =
+ (undef,undef,undef,undef);
+ my $pretty_string;
+ if ($searchtype eq 'Basic') {
+ ($query,$pretty_string) = &parse_basic_search($r,$closebutton);
+ } elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') {
+ ($query,$customquery,$customshow,$libraries,$pretty_string)
+ = &parse_advanced_search($r,$closebutton);
+ return OK if (! defined($query));
+ }
+ # Output some information to the user.
+ $r->print(&search_results_header($searchtype,$pretty_string));
+ $r->print("Sending search request to LON-CAPA servers.<br />\n");
+ $r->rflush();
+ &run_search($r,$query,$customquery,$customshow,$libraries);
+ ##
+ ## Display the results
+ ##
+ &display_results($r,$searchtype,$importbutton,$closebutton);
+ $r->rflush();
+ } else {
+ #
+ # Set the default view if it is not already set.
+ if (!defined($ENV{'form.viewselect'})) {
+ $ENV{'form.viewselect'} ="Detailed Citation View";
+ }
+ #
+ # remove the requested interface from the environment.
+ my $interface;
+ if ($ENV{'form.reqinterface'}) {
+ $interface = lc($ENV{'form.reqinterface'});
+ } else {
+ $interface = 'basic';
+ }
+ ##
+ ## Determine course of action
+ ##
+ if ($interface eq 'display') {
+ # &display_results($closebutton));
+ } elsif ($interface eq 'advanced') {
+ $r->print(&advanced_search_form($closebutton));
+ } elsif ($interface eq 'basic') {
+ # Output normal search interface
+ $r->print(&basic_search_form($closebutton));
+ }
+ }
+ untie (%persistent_db);
+ return OK;
+}
-# ------------------------------------------------------ Determine current user
- $yourself=$ENV{'user.name'}.'@'.$ENV{'user.domain'};
+######################################################################
+######################################################################
-# --- Now, depending on the interface actions, do one of three things here:
-# --- 1. a basic search
-# --- 2. an advanced search
-# --- 3. output a search interface
+=pod
-# ----------------------------------- See if a search invocation should be done
- if ($ENV{'form.basicsubmit'} eq 'SEARCH') {
- untie %hash; return &basicsearch($r,\%ENV);
- }
- elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') {
- untie %hash; return &advancedsearch($r,\%ENV);
- }
+=item &basic_search_form()
-# ----------------------------- Else, begin building search interface to output
- $scrout=''; # building a part of screen output
- $scrout.=&searchphrasefield('Limit by title','title',
- $ENV{'form.title'});
+Returns a scalar which holds html for the basic search form.
- $scrout.=&searchphrasefield('Limit by author','author',
- $ENV{'form.author'});
+=cut
- $scrout.=&searchphrasefield('Limit by subject','subject',
- $ENV{'form.subject'});
+######################################################################
+######################################################################
- $scrout.=&searchphrasefield('Limit by keywords','keywords',
- $ENV{'form.keywords'});
+sub basic_search_form{
+ my ($closebutton) = @_;
+ my $scrout=<<"ENDDOCUMENT";
+<html>
+<head>
+<title>The LearningOnline Network with CAPA</title>
+<script type="text/javascript">
+ function openhelp(val) {
+ openhelpwin=open('/adm/help/searchcat.html','helpscreen',
+ 'scrollbars=1,width=600,height=300');
+ openhelpwin.focus();
+ }
+</script>
+</head>
+<body bgcolor="#FFFFFF">
+<img align='right' src='/adm/lonIcons/lonlogos.gif' />
+<h1>Search Catalog</h1>
+<form method="post" action="/adm/searchcat">
+$hidden_fields
+<h3>Basic Search</h3>
+<p>
+Enter terms or phrases separated by AND, OR, or NOT
+then press SEARCH below.
+</p>
+<p>
+<table>
+<tr><td>
+ENDDOCUMENT
+ $scrout.=' '.&simpletextfield('basicexp',$ENV{'form.basicexp'},40).
+ ' ';
+# $scrout.=&simplecheckbox('allversions',$ENV{'form.allversions'});
+# $scrout.='<font color="#800000">Search historic archives</font>';
+ my $checkbox = &simplecheckbox('related',$ENV{'form.related'});
+ $scrout.=<<END;
+</td><td><a href="/adm/searchcat?reqinterface=advanced">Advanced Search</a></td></tr>
+<tr><td>$checkbox use related words</td><td></td></tr>
+</table>
+</p>
+<p>
+ <input type="submit" name="basicsubmit" value='SEARCH' />
+$closebutton
+END
+ $scrout.=&selectbox(undef,'viewselect',
+ $ENV{'form.viewselect'},
+ undef,undef,undef,
+ sort(keys(%Views)));
+ $scrout.=<<ENDDOCUMENT;
+<input type="button" value="HELP" onClick="openhelp()" />
+</p>
+</form>
+</body>
+</html>
+ENDDOCUMENT
+ return $scrout;
+}
+######################################################################
+######################################################################
- $scrout.=&searchphrasefield('Limit by URL','url',
- $ENV{'form.url'});
+=pod
-# $scrout.=&searchphrasefield('Limit by version','version',
-# $ENV{'form.version'});
+=item &advanced_search_form()
- $scrout.=&searchphrasefield('Limit by notes','notes',
- $ENV{'form.notes'});
+Returns a scalar which holds html for the advanced search form.
- $scrout.=&searchphrasefield('Limit by abstract','abstract',
- $ENV{'form.abstract'});
+=cut
- $ENV{'form.mime'}='any' unless length($ENV{'form.mime'});
- $scrout.=&selectbox('Limit by MIME type','mime',
- $ENV{'form.mime'},
- 'any','Any type',
- \&{Apache::loncommon::filedescriptionex},
- (&Apache::loncommon::fileextensions));
+######################################################################
+######################################################################
+sub advanced_search_form{
+ my ($closebutton) = @_;
+ my $advanced_buttons = <<"END";
+<p>
+<input type="submit" name="advancedsubmit" value='SEARCH' />
+<input type="reset" name="reset" value='RESET' />
+$closebutton
+<input type="button" value="HELP" onClick="openhelp()" />
+</p>
+END
+ if (!defined($ENV{'form.viewselect'})) {
+ $ENV{'form.viewselect'} ="Detailed Citation View";
+ }
+ my $scrout=<<"ENDHEADER";
+<html>
+<head>
+<title>The LearningOnline Network with CAPA</title>
+<script type="text/javascript">
+ function openhelp(val) {
+ openhelpwin=open('/adm/help/searchcat.html','helpscreen',
+ 'scrollbars=1,width=600,height=300');
+ openhelpwin.focus();
+ }
+</script>
+</head>
+<body bgcolor="#FFFFFF">
+<img align='right' src='/adm/lonIcons/lonlogos.gif' />
+<h1>Advanced Catalog Search</h1>
+<hr />
+Enter terms or phrases separated by search operators
+such as AND, OR, or NOT.<br />
+<form method="post" action="/adm/searchcat">
+$advanced_buttons
+$hidden_fields
+<table>
+<tr><td><font color="#800000" face="helvetica"><b>VIEW:</b></font></td>
+<td>
+ENDHEADER
+ $scrout.=&selectbox(undef,'viewselect',
+ $ENV{'form.viewselect'},
+ undef,undef,undef,
+ sort(keys(%Views)));
+ $scrout.="</td><td>Related<br />Words</td></tr>\n";
+ $scrout.=&searchphrasefield_with_related('title', 'title' ,
+ $ENV{'form.title'});
+ $scrout.=&searchphrasefield('author', 'author' ,$ENV{'form.author'});
+ $scrout.=&searchphrasefield_with_related('subject', 'subject' ,
+ $ENV{'form.subject'});
+ $scrout.=&searchphrasefield_with_related('keywords','keywords',
+ $ENV{'form.keywords'});
+ $scrout.=&searchphrasefield('URL', 'url' ,$ENV{'form.url'});
+ $scrout.=&searchphrasefield_with_related('notes', 'notes' ,
+ $ENV{'form.notes'});
+ $scrout.=&searchphrasefield_with_related('abstract','abstract',
+ $ENV{'form.abstract'});
+ # Hack - an empty table row.
+ $scrout.="<tr><td> </td><td> </td><td> </td></tr>\n";
+ $scrout.=&searchphrasefield('file<br />extension','mime',
+ $ENV{'form.mime'});
+ $scrout.="<tr><td> </td><td> </td><td> </td></tr>\n";
+ $scrout.=&searchphrasefield('publisher<br />owner','owner',
+ $ENV{'form.owner'});
+ $scrout.="</table>\n";
+ $ENV{'form.category'}='any' unless length($ENV{'form.category'});
+ $scrout.=&selectbox('File Category','category',
+ $ENV{'form.category'},
+ 'any','Any category',
+ undef,
+ (&Apache::loncommon::filecategories()));
$ENV{'form.language'}='any' unless length($ENV{'form.language'});
-
+ #----------------------------------------------------------------
+ # Allow restriction to multiple domains.
+ # I make the crazy assumption that there will never be a domain 'any'.
+ #
+ $ENV{'form.domains'} = 'any' if (! exists($ENV{'form.domains'}));
+ my @allowed_domains = (ref($ENV{'form.domains'}) ? @{$ENV{'form.domains'}}
+ : ($ENV{'form.domains'}) );
+ my %domain_hash = ();
+ foreach (@allowed_domains) {
+ $domain_hash{$_}++;
+ }
+ my @domains =&Apache::loncommon::get_domains();
+ # adjust the size of the select box
+ my $size = 4;
+ my $size = (scalar @domains < ($size - 1) ? scalar @domains + 1 : $size);
+ $scrout.="\n".'<font color="#800000" face="helvetica"><b>'.
+ 'DOMAINS</b></font><br />'.
+ '<select name="domains" size="'.$size.'" multiple>'."\n".
+ '<option name="any" value="any" '.
+ ($domain_hash{'any'}? 'selected ' :'').
+ '>all domains</option>'."\n";
+ foreach my $dom (sort @domains) {
+ $scrout.="<option name=\"$dom\" ".
+ ($domain_hash{$dom} ? 'selected ' :'').">$dom</option>\n";
+ }
+ $scrout.="</select>\n";
+ #----------------------------------------------------------------
$scrout.=&selectbox('Limit by language','language',
$ENV{'form.language'},'any','Any Language',
\&{Apache::loncommon::languagedescription},
(&Apache::loncommon::languageids),
);
-
# ------------------------------------------------ Compute date selection boxes
$scrout.=<<CREATIONDATESTART;
<p>
@@ -232,16 +508,13 @@ CREATIONDATESTART
$ENV{'form.creationdatestart_day'},
$ENV{'form.creationdatestart_year'},
);
- $scrout.=<<CREATIONDATEEND;
-and:
-CREATIONDATEEND
+ $scrout.="and:\n";
$scrout.=&dateboxes('creationdateend',12,31,2051,
$ENV{'form.creationdateend_month'},
$ENV{'form.creationdateend_day'},
$ENV{'form.creationdateend_year'},
);
$scrout.="</p>";
-
$scrout.=<<LASTREVISIONDATESTART;
<p>
<font color="#800000" face="helvetica"><b>LIMIT BY LAST REVISION DATE RANGE:
@@ -262,10 +535,6 @@ LASTREVISIONDATEEND
$ENV{'form.lastrevisiondateend_year'},
);
$scrout.='</p>';
-
- $scrout.=&searchphrasefield('Limit by publisher/owner','owner',
- $ENV{'form.owner'});
-
$ENV{'form.copyright'}='any' unless length($ENV{'form.copyright'});
$scrout.=&selectbox('Limit by copyright/distribution','copyright',
$ENV{'form.copyright'},
@@ -273,7 +542,6 @@ LASTREVISIONDATEEND
\&{Apache::loncommon::copyrightdescription},
(&Apache::loncommon::copyrightids),
);
-
# ------------------------------------------- Compute customized metadata field
$scrout.=<<CUSTOMMETADATA;
<p>
@@ -284,9 +552,7 @@ For resource-specific metadata, enter in
<b>Example:</b> grandmother=75 OR grandfather=85
<br />
CUSTOMMETADATA
-$scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'});
-$scrout.=' <i>initial users of this system do not need to worry about this option</i>';
-
+ $scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'});
$scrout.=<<CUSTOMSHOW;
<p>
<font color="#800000" face="helvetica"><b>SHOW SPECIAL METADATA FIELDS:</b>
@@ -295,296 +561,395 @@ Enter in a space-separated list of speci
in a fielded listing for each record result.
<br />
CUSTOMSHOW
-$scrout.=&simpletextfield('customshow',$ENV{'form.customshow'});
-$scrout.=' <i>initial users of this system do not need to worry about this option</i>';
-
-# ---------------------------------------------------------------- Print screen
- $r->print(<<ENDDOCUMENT);
-<html>
-<head>
-<title>The LearningOnline Network with CAPA</title>
-<script type="text/javascript">
- function openhelp(val) {
- openhelpwin=open('/adm/help/searchcat.html','helpscreen',
- 'scrollbars=1,width=400,height=300');
- openhelpwin.focus();
- }
-</script>
-</head>
-<body bgcolor="#FFFFFF">
-<img align='right' src='/adm/lonIcons/lonlogos.gif' />
-<h1>Search Catalog</h1>
-<form method="post" action="/adm/searchcat">
-$hidden
-<hr />
-<h3>Basic Search</h3>
-<p>
-Enter terms or phrases separated by search operators
-such as AND, OR, or NOT then press SEARCH below. Terms should be specific
-to the title, author, subject, notes, or abstract information associated
-with a resource.
-<br />
-ENDDOCUMENT
- $r->print(&simpletextfield('basicexp',$ENV{'form.basicexp'}));
- $r->print(' ');
- $r->print(&simplecheckbox('titleonly',$ENV{'form.titleonly'}));
- $r->print('<font color="#800000">Title only</font> ');
-# $r->print(&simplecheckbox('allversions',$ENV{'form.allversions'}));
-# <font color="#800000">Search historic archives</font>
- $r->print(<<ENDDOCUMENT);
-<br />
-<input type="submit" name="basicsubmit" value='SEARCH' />
-<input type="reset" name="reset" value='RESET' />
-$closebutton
-$basicviewselect
-<input type="button" value="HELP" onClick="openhelp()" />
-</p>
-<hr />
-<h3>Advanced Search</h3>
-$scrout
-<p>
-<input type="submit" name="advancedsubmit" value='SEARCH' />
-<input type="reset" name="reset" value='RESET' />
-$closebutton
-$advancedviewselect
-<input type="button" value="HELP" onClick="openhelp()" />
-</p>
+ $scrout.=&simpletextfield('customshow',$ENV{'form.customshow'});
+ $scrout.=<<ENDDOCUMENT;
+$advanced_buttons
</form>
</body>
</html>
ENDDOCUMENT
- return OK;
-}
+ return $scrout;
+}
+
+######################################################################
+######################################################################
-# ----------- grab unprocessed CGI variables that may have been appended to URL
-sub get_unprocessed_cgi {
- foreach (split(/&/,$ENV{'QUERY_STRING'})) {
- my ($name, $value) = split(/=/,$_);
- $value =~ tr/+/ /;
- $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
- if ($name eq 'catalogmode' or $name eq 'launch' or $name eq 'acts') {
- $ENV{'form.'.$name}=$value;
- }
+=pod
+
+=item &reconstruct_persistent_form_data
+
+This function is the reverse of &make_persistent();
+Retrieve persistent data from %persistent_db. Retrieved items will have their
+values unescaped. If the item contains commas (before unescaping), the
+returned value will be an array pointer. Items will be returned in the
+environment in $ENV{"form.$name"}.
+
+=cut
+
+######################################################################
+######################################################################
+sub reconstruct_persistent_form_data {
+ foreach my $name (keys %persistent_db) {
+ # &Apache::lonnet::logthis("Reconstructing $name = $persistent_db{$name}");
+ my @Values = split(',',$persistent_db{$name});
+ my @value = map { &Apache::lonnet::unescape($_) } @Values;
+ $name = 'form.'.$name;
+ if (exists($ENV{$name})) {
+ if (ref($ENV{$name})) {
+ # Assume it is an array reference
+ $ENV{$name} = [@{$ENV{$name}},@value];
+ } else {
+ $ENV{$name} = [$ENV{$name},@value];
+ }
+ } else {
+ if (@value > 1) {
+ $ENV{$name} = [@value];
+ } else {
+ $ENV{$name} = $value[0];
+ }
+ }
}
+ return;
}
-# ------------------------------------------------------------- make persistent
+######################################################################
+######################################################################
+
+=pod
+
+=item &make_persistent()
+
+Store (environment) variables away to the %persistent_db.
+Values will be escaped. Values that are array pointers will have their
+elements escaped and concatenated in a comma seperated string.
+
+=cut
+
+######################################################################
+######################################################################
sub make_persistent {
- my $persistent='';
-
- foreach (keys %ENV) {
- if (/^form\./ && !/submit/) {
- my $name=$_;
- my $key=$name;
- $ENV{$key}=~s/\'//g; # do not mess with html field syntax
- $name=~s/^form\.//;
- $persistent.=<<END;
-<input type='hidden' name='$name' value='$ENV{$key}' />
-END
- }
+ my %save = %{shift()};
+ foreach my $name (keys %save) {
+ next if ($name !~ /^form\./ || $name =~ /submit/);
+ my @values = (ref($save{$name}) ? @{$save{$name}} : ($save{$name}));
+ # We handle array references, but not recursively.
+ my $store = join(',', map { &Apache::lonnet::escape($_); } @values );
+ $name=~s/^form\.//;
+ $persistent_db{$name} = $store;
}
- return $persistent;
+ return '';
}
-# --------------------------------------------------------- Various form fields
+######################################################################
+# HTML form building functions #
+######################################################################
+
+=pod
+
+=item HTML form building functions
+
+=over 4
+
+=cut
+
+###############################################
+###############################################
+
+=pod
+
+=item &simpletextfield()
+
+Inputs: $name,$value,$size
+
+Returns a text input field with the given name, value, and size.
+If size is not specified, a value of 20 is used.
+
+=cut
+
+###############################################
+###############################################
sub simpletextfield {
- my ($name,$value)=@_;
- return '<input type=text name=\''.$name.
- '\' size=20 value=\''.$value.'\' />';
+ my ($name,$value,$size)=@_;
+ $size = 20 if (! defined($size));
+ return '<input type="text" name="'.$name.
+ '" size="'.$size.'" value="'.$value.'" />';
}
+###############################################
+###############################################
+
+=pod
+
+=item &simplecheckbox()
+
+Inputs: $name,$value
+
+Returns a simple check box with the given $name.
+If $value eq 'on' the box is checked.
+
+=cut
+
+###############################################
+###############################################
+
sub simplecheckbox {
my ($name,$value)=@_;
my $checked='';
- $checked="CHECKED" if $value eq 'on';
- return '<input type=checkbox name=\''.$name.'\' '. $checked . '>';
+ $checked="checked" if $value eq 'on';
+ return '<input type="checkbox" name="'.$name.'" '. $checked . ' />';
+}
+
+###############################################
+###############################################
+
+=pod
+
+=item &fieldtitle()
+
+Input: $title
+
+Returns a scalar with html which will display $title as a search
+field heading.
+
+=cut
+
+###############################################
+###############################################
+
+sub fieldtitle {
+ my $title = uc(shift());
+ return '<font color="#800000" face="helvetica"><b>'.$title.
+ ': </b></font>';
}
+###############################################
+###############################################
+
+=pod
+
+=item &searchphrasefield()
+
+Inputs: $title,$name,$value
+
+Returns html for a title line and an input field for entering search terms.
+The entry field (which is where the $name and $value are used) is a 50 column
+simpletextfield. The html returned is for a row in a three column table.
+
+=cut
+
+###############################################
+###############################################
+
sub searchphrasefield {
my ($title,$name,$value)=@_;
- my $instruction=<<END;
-Enter terms or phrases separated by search operators such
-as AND, OR, or NOT.
-END
- my $uctitle=uc($title);
- return "\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:</b>".
- "</FONT> $instruction<br />".
- '<input type=text name="'.$name.'" size=80 value=\''.$value.'\'>';
+ return '<tr><td>'.&fieldtitle($title).'</td><td>'.
+ &simpletextfield($name,$value,50)."</td><td> </td></tr>\n";
+}
+
+###############################################
+###############################################
+
+=pod
+
+=item &searchphrasefield_with_related()
+
+Inputs: $title,$name,$value
+
+Returns html for a title line and an input field for entering search terms
+and a check box for 'related words'. The entry field (which is where the
+$name and $value are used) is a 50 column simpletextfield. The name of
+the related words checkbox is "$name_related".
+
+=cut
+
+###############################################
+###############################################
+
+sub searchphrasefield_with_related {
+ my ($title,$name,$value)=@_;
+ return '<tr><td>'.&fieldtitle($title).'</td><td>'.
+ &simpletextfield($name,$value,50).'</td><td align="center"> '.
+ &simplecheckbox($name.'_related',$ENV{'form.'.$name.'_related'}).
+ " </td></tr>\n";
}
+###############################################
+###############################################
+
+=pod
+
+=item &dateboxes()
+
+Returns html selection form elements for the specification of
+the day, month, and year.
+
+=cut
+
+###############################################
+###############################################
+
sub dateboxes {
my ($name,$defaultmonth,$defaultday,$defaultyear,
$currentmonth,$currentday,$currentyear)=@_;
($defaultmonth,$defaultday,$defaultyear)=('','','');
- my $month=<<END;
-<select name="${name}_month">
-<option value='$defaultmonth'> </option>
-<option value="1">January</option>
-<option value="2">February</option>
-<option value="3">March</option>
-<option value="4">April</option>
-<option value="5">May</option>
-<option value="6">June</option>
-<option value="7">July</option>
-<option value="8">August</option>
-<option value="9">September</option>
-<option value="10">October</option>
-<option value="11">November</option>
-<option value="12">December</option>
-</select>
-END
- $month=~s/(\"$currentmonth\")/$1 SELECTED/ if length($currentmonth);
+ #
+ # Day
my $day=<<END;
<select name="${name}_day">
<option value='$defaultday'> </option>
-<option value="1">1</option>
-<option value="2">2</option>
-<option value="3">3</option>
-<option value="4">4</option>
-<option value="5">5</option>
-<option value="6">6</option>
-<option value="7">7</option>
-<option value="8">8</option>
-<option value="9">9</option>
-<option value="10">10</option>
-<option value="11">11</option>
-<option value="12">12</option>
-<option value="13">13</option>
-<option value="14">14</option>
-<option value="15">15</option>
-<option value="16">16</option>
-<option value="17">17</option>
-<option value="18">18</option>
-<option value="19">19</option>
-<option value="20">20</option>
-<option value="21">21</option>
-<option value="22">22</option>
-<option value="23">23</option>
-<option value="24">24</option>
-<option value="25">25</option>
-<option value="26">26</option>
-<option value="27">27</option>
-<option value="28">28</option>
-<option value="29">29</option>
-<option value="30">30</option>
-<option value="31">31</option>
-</select>
END
+ for (my $i = 1; $i<=31; $i++) {
+ $day.="<option value=\"$i\">$i</option>\n";
+ }
+ $day.="</select>\n";
$day=~s/(\"$currentday\")/$1 SELECTED/ if length($currentday);
+ #
+ # Month
+ my $month=<<END;
+<select name="${name}_month">
+<option value='$defaultmonth'> </option>
+END
+ my $i = 1;
+ foreach (qw/January February March April May June
+ July August September October November December /){
+ $month .="<option value=\"$i\">$_</option>\n";
+ $i++;
+ }
+ $month.="</select>\n";
+ $month=~s/(\"$currentmonth\")/$1 SELECTED/ if length($currentmonth);
+ #
+ # Year (obviously)
my $year=<<END;
<select name="${name}_year">
<option value='$defaultyear'> </option>
-<option value="1976">1976</option>
-<option value="1977">1977</option>
-<option value="1978">1978</option>
-<option value="1979">1979</option>
-<option value="1980">1980</option>
-<option value="1981">1981</option>
-<option value="1982">1982</option>
-<option value="1983">1983</option>
-<option value="1984">1984</option>
-<option value="1985">1985</option>
-<option value="1986">1986</option>
-<option value="1987">1987</option>
-<option value="1988">1988</option>
-<option value="1989">1989</option>
-<option value="1990">1990</option>
-<option value="1991">1991</option>
-<option value="1992">1992</option>
-<option value="1993">1993</option>
-<option value="1994">1994</option>
-<option value="1995">1995</option>
-<option value="1996">1996</option>
-<option value="1997">1997</option>
-<option value="1998">1998</option>
-<option value="1999">1999</option>
-<option value="2000">2000</option>
-<option value="2001">2001</option>
-<option value="2002">2002</option>
-<option value="2003">2003</option>
-<option value="2004">2004</option>
-<option value="2005">2005</option>
-<option value="2006">2006</option>
-<option value="2007">2007</option>
-<option value="2008">2008</option>
-<option value="2009">2009</option>
-<option value="2010">2010</option>
-<option value="2011">2011</option>
-<option value="2012">2012</option>
-<option value="2013">2013</option>
-<option value="2014">2014</option>
-<option value="2015">2015</option>
-<option value="2016">2016</option>
-<option value="2017">2017</option>
-<option value="2018">2018</option>
-<option value="2019">2019</option>
-<option value="2020">2020</option>
-<option value="2021">2021</option>
-<option value="2022">2022</option>
-<option value="2023">2023</option>
-<option value="2024">2024</option>
-<option value="2025">2025</option>
-<option value="2026">2026</option>
-<option value="2027">2027</option>
-<option value="2028">2028</option>
-<option value="2029">2029</option>
-<option value="2030">2030</option>
-<option value="2031">2031</option>
-<option value="2032">2032</option>
-<option value="2033">2033</option>
-<option value="2034">2034</option>
-<option value="2035">2035</option>
-<option value="2036">2036</option>
-<option value="2037">2037</option>
-<option value="2038">2038</option>
-<option value="2039">2039</option>
-<option value="2040">2040</option>
-<option value="2041">2041</option>
-<option value="2042">2042</option>
-<option value="2043">2043</option>
-<option value="2044">2044</option>
-<option value="2045">2045</option>
-<option value="2046">2046</option>
-<option value="2047">2047</option>
-<option value="2048">2048</option>
-<option value="2049">2049</option>
-<option value="2050">2050</option>
-<option value="2051">2051</option>
-</select>
END
+ my $maxyear = 2051;
+ for (my $i = 1976; $i<=$maxyear; $i++) {
+ $year.="<option value=\"$i\">$i</option>\n";
+ }
+ $year.="</select>\n";
$year=~s/(\"$currentyear\")/$1 SELECTED/ if length($currentyear);
return "$month$day$year";
}
+###############################################
+###############################################
+
+=pod
+
+=item &selectbox()
+
+Returns a scalar containing an html <select> form.
+
+Inputs:
+
+=over 4
+
+=item $title
+
+Printed above the select box, in uppercase. If undefined, only a select
+box will be returned, with no additional html.
+
+=item $name
+
+The name element of the <select> tag.
+
+=item $default
+
+The default value of the form. Can be $anyvalue, or in @idlist.
+
+=item $anyvalue
+
+The <option value="..."> used to indicate a default of
+none of the values. Can be undef.
+
+=item $anytag
+
+The text associate with $anyvalue above.
+
+=item $functionref
+
+Each element in @idlist will be passed as a parameter
+to the function referenced here. The return value of the function should
+be a scalar description of the items. If this value is undefined the
+description of each item in @idlist will be the item name.
+
+=item @idlist
+
+The items to be selected from. One of these or $anyvalue will be the
+value returned by the form element, $ENV{form.$name}.
+
+=back
+
+=cut
+
+###############################################
+
sub selectbox {
- my ($title,$name,$value,$anyvalue,$anytag,$functionref,@idlist)=@_;
- my $uctitle=uc($title);
- my $selout="\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:".
- "</b></font><br />".'<select name="'.$name.'">';
- foreach ($anyvalue,@idlist) {
- $selout.='<option value=\''.$_.'\'';
- if ($_ eq $value and !/^any$/) {
- $selout.=' selected>'.&{$functionref}($_).'</option>';
+ my ($title,$name,$default,$anyvalue,$anytag,$functionref,@idlist)=@_;
+ if (! defined($functionref)) { $functionref = sub { $_[0]}; }
+ my $selout='';
+ if (defined($title)) {
+ my $uctitle=uc($title);
+ $selout="\n".'<p><font color="#800000" face="helvetica">'.
+ '<b>'.$uctitle.': </b></font>';
+ }
+ $selout .= '<select name="'.$name.'">';
+ unshift @idlist,$anyvalue if (defined($anyvalue));
+ foreach (@idlist) {
+ $selout.='<option value="'.$_.'"';
+ if ($_ eq $default and !/^any$/) {
+ $selout.=' selected >'.&{$functionref}($_).'</option>';
}
- elsif ($_ eq $value and /^$anyvalue$/) {
- $selout.=' selected>'.$anytag.'</option>';
+ elsif ($_ eq $default and /^$anyvalue$/) {
+ $selout.=' selected >'.$anytag.'</option>';
}
else {$selout.='>'.&{$functionref}($_).'</option>';}
}
- return $selout.'</select>';
+ return $selout.'</select>'.(defined($title)?'</p>':' ');
}
-sub testf {
- return @_[0];
-}
+######################################################################
+# End of HTML form building functions #
+######################################################################
+
+=pod
+
+=back
+
+=cut
+
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &parse_advanced_search()
-# ----------------------------------------------- Performing an advanced search
-sub advancedsearch {
- my ($r,$envhash)=@_;
- my %ENV=%{$envhash};
+Parse advanced search form and return the following:
+=over 4
+
+=item $query Scalar containing an SQL query.
+
+=item $customquery Scalar containing a custom query.
+
+=item $customshow Scalar containing commands to show custom metadata.
+
+=item $libraries_to_query Reference to array of domains to search.
+
+=back
+
+=cut
+
+######################################################################
+######################################################################
+sub parse_advanced_search {
+ my ($r,$closebutton)=@_;
my $fillflag=0;
+ my $pretty_search_string = "<br />\n";
# Clean up fields for safety
for my $field ('title','author','subject','keywords','url','version',
'creationdatestart_month','creationdatestart_day',
@@ -594,10 +959,21 @@ sub advancedsearch {
'lastrevisiondatestart_year','lastrevisiondateend_month',
'lastrevisiondateend_day','lastrevisiondateend_year',
'notes','abstract','mime','language','owner',
- 'custommetadata','customshow') {
+ 'custommetadata','customshow','category') {
$ENV{"form.$field"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
}
-
+ foreach ('mode','form','element') {
+ # is this required? Hmmm.
+ next unless (exists($ENV{"form.$_"}));
+ $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});
+ $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
+ }
+ # Preprocess the category form element.
+ if ($ENV{'form.category'} ne 'any') {
+ my @extensions = &Apache::loncommon::filecategorytypes
+ ($ENV{'form.category'});
+ $ENV{'form.mime'} = join ' OR ',@extensions;
+ }
# Check to see if enough information was filled in
for my $field ('title','author','subject','keywords','url','version',
'notes','abstract','mime','language','owner',
@@ -607,32 +983,52 @@ sub advancedsearch {
}
}
unless ($fillflag) {
- &output_blank_field_error($r);
- return OK;
+ &output_blank_field_error($r,$closebutton);
+ return ;
}
-
-
# Turn the form input into a SQL-based query
my $query='';
-
my @queries;
+ my $font = '<font color="#800000" face="helvetica">';
# Evaluate logical expression AND/OR/NOT phrase fields.
foreach my $field ('title','author','subject','notes','abstract','url',
- 'keywords','version','owner') {
+ 'keywords','version','owner','mime') {
if ($ENV{'form.'.$field}) {
- push @queries,&build_SQL_query($field,$ENV{'form.'.$field});
- }
+ my $searchphrase = $ENV{'form.'.$field};
+ $pretty_search_string .= $font."$field</font> contains <b>".
+ $searchphrase."</b>";
+ if ($ENV{'form.'.$field.'_related'}) {
+ my @New_Words;
+ ($searchphrase,@New_Words) = &related_version($searchphrase);
+ if (@New_Words) {
+ $pretty_search_string .= " with related words: ".
+ "<b>@New_Words</b>.";
+ } else {
+ $pretty_search_string .= " with no related words.";
+ }
+ }
+ $pretty_search_string .= "<br />\n";
+ push @queries,&build_SQL_query($field,$searchphrase);
+ }
+ }
+ # I dislike the hack below.
+ if ($ENV{'form.category'}) {
+ $ENV{'form.mime'}='';
}
# Evaluate option lists
if ($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'}\")";
+ $pretty_search_string.=$font."language</font>= ".
+ &Apache::loncommon::languagedescription($ENV{'form.language'}).
+ "<br />\n";
}
if ($ENV{'form.copyright'} and $ENV{'form.copyright'} ne 'any') {
push @queries,"(copyright like \"$ENV{'form.copyright'}\")";
+ $pretty_search_string.=$font."copyright</font> = ".
+ &Apache::loncommon::copyrightdescription($ENV{'form.copyright'}).
+ "<br \>\n";
}
+ #
# Evaluate date windows
my $datequery=&build_date_queries(
$ENV{'form.creationdatestart_month'},
@@ -650,86 +1046,173 @@ sub advancedsearch {
);
# Test to see if date windows are legitimate
if ($datequery=~/^Incorrect/) {
- &output_date_error($r,$datequery);
- return OK;
- }
- elsif ($datequery) {
+ &output_date_error($r,$datequery,$closebutton);
+ return ;
+ } elsif ($datequery) {
+ # Here is where you would set up pretty_search_string to output
+ # date query information.
push @queries,$datequery;
}
-
# Process form information for custom metadata querying
- my $customquery='';
+ my $customquery=undef;
if ($ENV{'form.custommetadata'}) {
+ $pretty_search_string .=$font."Custom Metadata Search</font>: <b>".
+ $ENV{'form.custommetadata'}."</b><br />\n";
$customquery=&build_custommetadata_query('custommetadata',
$ENV{'form.custommetadata'});
}
- my $customshow='';
+ my $customshow=undef;
if ($ENV{'form.customshow'}) {
+ $pretty_search_string .=$font."Custom Metadata Display</font>: <b>".
+ $ENV{'form.customshow'}."</b><br />\n";
$customshow=$ENV{'form.customshow'};
$customshow=~s/[^\w\s]//g;
my @fields=split(/\s+/,$customshow);
$customshow=join(" ",@fields);
}
- # Send query statements over the network to be processed by either the SQL
- # database or a recursive scheme of 'grep'-like actions (for custom
- # metadata).
+ ## ---------------------------------------------------------------
+ ## Deal with restrictions to given domains
+ ##
+ my $libraries_to_query = undef;
+ # $ENV{'form.domains'} can be either a scalar or an array reference.
+ # We need an array.
+ my @allowed_domains = (ref($ENV{'form.domains'}) ? @{$ENV{'form.domains'}}
+ : ($ENV{'form.domains'}) );
+ my %domain_hash = ();
+ my $pretty_domains_string;
+ foreach (@allowed_domains) {
+ $domain_hash{$_}++;
+ }
+ if ($domain_hash{'any'}) {
+ $pretty_domains_string = "Searching all domains.";
+ } else {
+ if (@allowed_domains > 1) {
+ $pretty_domains_string = "Searching domains:";
+ } else {
+ $pretty_domains_string = "Searching domain ";
+ }
+ foreach (sort @allowed_domains) {
+ $pretty_domains_string .= "<b>$_</b> ";
+ }
+ foreach (keys(%Apache::lonnet::libserv)) {
+ if (exists($domain_hash{$Apache::lonnet::hostdom{$_}})) {
+ push @$libraries_to_query,$_;
+ }
+ }
+ }
+ $pretty_search_string .= $pretty_domains_string."<br />\n";
+ #
if (@queries) {
$query=join(" AND ",@queries);
$query="select * from metadata where $query";
- my $reply; # reply hash reference
- unless ($customquery or $customshow) {
- $reply=&Apache::lonnet::metadata_query($query);
- }
- else {
- $reply=&Apache::lonnet::metadata_query($query,
- $customquery,$customshow);
- }
- &output_results('Advanced',$r,$envhash,$customquery,$reply);
+ } elsif ($customquery) {
+ $query = '';
}
- elsif ($customquery) {
- my $reply; # reply hash reference
- $reply=&Apache::lonnet::metadata_query('',
- $customquery,$customshow);
- &output_results('Advanced',$r,$envhash,$customquery,$reply);
- }
- # should not get to this point
- return 'Error. Should not have gone to this point.';
-}
-
-# --------------------------------------------------- Performing a basic search
-sub basicsearch {
- my ($r,$envhash)=@_;
- my %ENV=%{$envhash};
+ return ($query,$customquery,$customshow,$libraries_to_query,
+ $pretty_search_string);
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &parse_basic_search()
+
+Parse the basic search form and return a scalar containing an sql query.
+
+=cut
+
+######################################################################
+######################################################################
+sub parse_basic_search {
+ my ($r,$closebutton)=@_;
# Clean up fields for safety
for my $field ('basicexp') {
$ENV{"form.$field"}=~s/[^\w\s\(\)\-]//g;
}
+ foreach ('mode','form','element') {
+ # is this required? Hmmm.
+ next unless (exists($ENV{"form.$_"}));
+ $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});
+ $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
+ }
# Check to see if enough is filled in
unless (&filled($ENV{'form.basicexp'})) {
- &output_blank_field_error($r);
+ &output_blank_field_error($r,$closebutton);
return OK;
}
-
+ my $pretty_search_string = '<b>'.$ENV{'form.basicexp'}.'</b>';
+ my $search_string = $ENV{'form.basicexp'};
+ if ($ENV{'form.related'}) {
+ my @New_Words;
+ ($search_string,@New_Words) = &related_version($ENV{'form.basicexp'});
+ if (@New_Words) {
+ $pretty_search_string .= " with related words: <b>@New_Words</b>.";
+ } else {
+ $pretty_search_string .= " with no related words.";
+ }
+ }
# Build SQL query string based on form page
my $query='';
my $concatarg=join('," ",',
- ('title', 'author', 'subject', 'notes', 'abstract'));
+ ('title', 'author', 'subject', 'notes', 'abstract',
+ 'keywords'));
$concatarg='title' if $ENV{'form.titleonly'};
+ $query=&build_SQL_query('concat('.$concatarg.')',$search_string);
+ $pretty_search_string .= "<br />\n";
+ return 'select * from metadata where '.$query,$pretty_search_string;
+}
- $query=&build_SQL_query('concat('.$concatarg.')',$ENV{'form.'.'basicexp'});
- # Get reply (either a hash reference to filehandles or bad connection)
- my $reply=&Apache::lonnet::metadata_query('select * from metadata where '.$query);
+######################################################################
+######################################################################
- # Output search results
+=pod
- &output_results('Basic',$r,$envhash,$query,$reply);
+=item &related_version
- return OK;
-}
+Modifies an input string to include related words. Words in the string
+are replaced with parenthesized lists of 'OR'd words. For example
+"torque" is replaced with "(torque OR word1 OR word2 OR ...)".
+
+Note: Using this twice on a string is probably silly.
+
+=cut
+
+######################################################################
+######################################################################
+sub related_version {
+ my $search_string = shift;
+ my $result = $search_string;
+ my %New_Words = ();
+ while ($search_string =~ /(\w+)/cg) {
+ my $word = $1;
+ next if (lc($word) =~ /\b(or|and|not)\b/);
+ my @Words = &Apache::loncommon::get_related_words($word);
+ @Words = ($#Words>4? @Words[0..4] : @Words);
+ foreach (@Words) { $New_Words{$_}++;}
+ my $replacement = join " OR ", ($word,@Words);
+ $result =~ s/(\b)$word(\b)/$1($replacement)$2/g;
+ }
+ return $result,sort(keys(%New_Words));
+}
+
+######################################################################
+######################################################################
+
+=pod
-# ------------------------------------------------------------- build_SQL_query
+=item &build_SQL_query()
+
+Builds a SQL query string from a logical expression with AND/OR keywords
+using Text::Query and &recursive_SQL_query_builder()
+
+=cut
+
+######################################################################
+######################################################################
sub build_SQL_query {
my ($field_name,$logic_statement)=@_;
my $q=new Text::Query('abc',
@@ -741,7 +1224,20 @@ sub build_SQL_query {
return $sql_query;
}
-# ------------------------------------------------- build custom metadata query
+######################################################################
+######################################################################
+
+=pod
+
+=item &build_custommetadata_query()
+
+Constructs a custom metadata query using a rather heinous regular
+expression.
+
+=cut
+
+######################################################################
+######################################################################
sub build_custommetadata_query {
my ($field_name,$logic_statement)=@_;
my $q=new Text::Query('abc',
@@ -751,12 +1247,29 @@ sub build_custommetadata_query {
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;
+ # wordone=wordtwo becomes\<wordone\>[^\<] *wordtwo[^\<]*\<\/wordone\>
+ $matchexp =~ s/(\w+)\\=([\w\\\+]+)?# wordone=wordtwo is changed to
+ /\\<$1\\>?# \<wordone\>
+ \[\^\\<\]?# [^\<]
+ \*$2\[\^\\<\]?# *wordtwo[^\<]
+ \*\\<\\\/$1\\>?# *\<\/wordone\>
+ /g;
return $matchexp;
}
-# - Recursively parse a reverse notation expression into a SQL query expression
+######################################################################
+######################################################################
+
+=pod
+
+=item &recursive_SQL_query_build()
+
+Recursively constructs an SQL query. Takes as input $dkey and $pattern.
+
+=cut
+
+######################################################################
+######################################################################
sub recursive_SQL_query_build {
my ($dkey,$pattern)=@_;
my @matches=($pattern=~/(\[[^\]|\[]*\])/g);
@@ -790,7 +1303,20 @@ sub recursive_SQL_query_build {
&recursive_SQL_query_build($dkey,$pattern);
}
-# ------------------------------------------------------------ Build date query
+######################################################################
+######################################################################
+
+=pod
+
+=item &build_date_queries()
+
+Builds a SQL logic query to check time/date entries.
+Also reports errors (check for /^Incorrect/).
+
+=cut
+
+######################################################################
+######################################################################
sub build_date_queries {
my ($cmonth1,$cday1,$cyear1,$cmonth2,$cday2,$cyear2,
$lmonth1,$lday1,$lyear1,$lmonth2,$lday2,$lyear2)=@_;
@@ -839,35 +1365,685 @@ sub build_date_queries {
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
-# contacted, etc.)
-sub output_results {
- my $fnum; # search result counter
- my ($mode,$r,$envhash,$query,$replyref)=@_;
- my %ENV=%{$envhash};
- my %rhash=%{$replyref};
- my $compiledresult='';
- my $timeremain=300;
- my $elapsetime=0;
- my $resultflag=0;
- my $tflag=1;
+######################################################################
+######################################################################
- # make query information persistent to allow for subsequent revision
- my $persistent=&make_persistent();
+=pod
+=item ©right_check()
+
+=cut
+
+######################################################################
+######################################################################
+
+sub copyright_check {
+ my $Metadata = shift;
+ # Check copyright tags and skip results the user cannot use
+ my (undef,undef,$resdom,$resname) = split('/',
+ $Metadata->{'url'});
+ # Check for priv
+ if (($Metadata->{'copyright'} eq 'priv') &&
+ (($ENV{'user.name'} ne $resname) &&
+ ($ENV{'user.domain'} ne $resdom))) {
+ return 0;
+ }
+ # Check for domain
+ if (($Metadata->{'copyright'} eq 'domain') &&
+ ($ENV{'user.domain'} ne $resdom)) {
+ return 0;
+ }
+ return 1;
+}
+
+#####################################################################
+#####################################################################
+
+=pod
+
+=item MySQL Table Description
+
+MySQL table creation requires a precise description of the data to be
+stored. The use of the correct types to hold data is vital to efficient
+storage and quick retrieval of records. The columns must be described in
+the following format:
+
+=cut
+
+##
+## Restrictions:
+## columns of type 'text' and 'blob' cannot have defaults.
+## columns of type 'enum' cannot be used for FULLTEXT.
+##
+my @DataOrder = qw/id title author subject url keywords version notes
+ abstract mime lang owner copyright creationdate lastrevisiondate hostname
+ idx_title idx_author idx_subject idx_abstract idx_mime idx_language
+ idx_owner idx_copyright/;
+
+my %Datatypes =
+ ( id =>{ type => 'INT',
+ restrictions => 'NOT NULL',
+ primary_key => 'yes',
+ auto_inc => 'yes'
+ },
+ title =>{ type=>'TEXT'},
+ author =>{ type=>'TEXT'},
+ subject =>{ type=>'TEXT'},
+ url =>{ type=>'TEXT',
+ restrictions => 'NOT NULL' },
+ keywords =>{ type=>'TEXT'},
+ version =>{ type=>'TEXT'},
+ notes =>{ type=>'TEXT'},
+ abstract =>{ type=>'TEXT'},
+ mime =>{ type=>'TEXT'},
+ lang =>{ type=>'TEXT'},
+ owner =>{ type=>'TEXT'},
+ copyright =>{ type=>'TEXT'},
+ hostname =>{ type=>'TEXT'},
+ #--------------------------------------------------
+ creationdate =>{ type=>'DATETIME'},
+ lastrevisiondate =>{ type=>'DATETIME'},
+ #--------------------------------------------------
+ idx_title =>{ type=>'FULLTEXT', target=>'title'},
+ idx_author =>{ type=>'FULLTEXT', target=>'author'},
+ idx_subject =>{ type=>'FULLTEXT', target=>'subject'},
+ idx_abstract =>{ type=>'FULLTEXT', target=>'abstract'},
+ idx_mime =>{ type=>'FULLTEXT', target=>'mime'},
+ idx_language =>{ type=>'FULLTEXT', target=>'lang'},
+ idx_owner =>{ type=>'FULLTEXT', target=>'owner'},
+ idx_copyright =>{ type=>'FULLTEXT', target=>'copyright'},
+ );
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &write_status()
+
+=cut
+
+######################################################################
+######################################################################
+sub write_status {
+ my ($r,$string) = @_;
+ $r->print("<pre>".$string."</pre>\n");
+ $r->rflush();
+ return;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &run_search
+
+=cut
+
+######################################################################
+######################################################################
+sub run_search {
+ my ($r,$query,$customquery,$customshow,$serverlist) = @_;
+ #
+ # Timing variables
+ #
+ my $starttime = time;
+ my $max_time = 120; # seconds for the search to complete
+ #
+ # Determine the servers we need to contact.
+ #
+ my @Servers_to_contact;
+ if (defined($serverlist)) {
+ @Servers_to_contact = @$serverlist;
+ } else {
+ @Servers_to_contact = sort(keys(%Apache::lonnet::libserv));
+ }
+ my %Server_status;
+ #
+ # Create Table
+ #
+ my $table = &Apache::lonmysql::create_table
+ ( { columns => \%Datatypes,
+ column_order => \@DataOrder,
+ } );
+ if (! defined($table)) {
+ # What do I do now? Print out an error page.
+ &Apache::lonnet::logthis("lonmysql attempted to create a table ".
+ "and this was the result:".
+ &Apache::lonmysql::get_error());
+ $r->print("An internal error occured with the database.<br />".
+ "The error has been logged, but you should probably alert".
+ " your system administrator.");
+ return;
+ }
+ ##
+ ## form.table needs to be stored in the persistent database...
+ ##
+ $ENV{'form.table'}=$table;
+ #
+ # Prepare for the big loop.
+ #
+ my $hitcountsum;
+ my $server;
+ my $status;
+ while ((time - $starttime < $max_time) &&
+ ((@Servers_to_contact) || keys(%Server_status))) {
+ # Send out a search request if it needs to be done.
+ if (@Servers_to_contact) {
+ # Contact one server
+ my $server = shift(@Servers_to_contact);
+ my $reply=&Apache::lonnet::metadata_query($query,$customquery,
+ $customshow,[$server]);
+ ($server) = keys(%$reply);
+ $Server_status{$server} = $reply->{$server};
+ # &write_status($r,"Contacted:$server:reply:".
+ # $Server_status{$server});
+ if ($max_time - (time - $starttime) < 20) {
+ # If there are less than 20 seconds to go in the search,
+ # give the newly contacted servers 20 more seconds to
+ # respond....
+ $max_time += 20;
+ }
+ } else {
+ sleep(1); # wait a sec. to give time for files to be written
+ }
+ while (my ($server,$status) = each(%Server_status)) {
+ if ($status eq 'con_lost') {
+ delete ($Server_status{$server});
+ # &write_status($r,"server $server is not responding.");
+ next;
+ }
+ $status=~/^([\.\w]+)$/;
+ my $datafile=$r->dir_config('lonDaemons').'/tmp/'.$1;
+ if (-e $datafile && ! -e "$datafile.end") {
+ # Let the user know we are receiving data from the server
+ # &write_status($r,"$server:Receiving file");
+ next;
+ }
+ if (-e "$datafile.end") {
+ if (-z "$datafile") {
+ delete($Server_status{$server});
+ next;
+ }
+ my $fh;
+ if (!($fh=Apache::File->new($datafile))) {
+ # Error opening file...
+ # Tell the user and exit...?
+ # Should I give up on opening it?
+ &write_status("Unable to open search results file for ".
+ "server $server. Omitting from search");
+ next;
+ }
+ # Read in the whole file.
+ while (my $result = <$fh>) {
+ # handle custom fields? Someday we will!
+ chomp($result);
+ next unless $result;
+ # Parse the result.
+ my %Fields = &parse_raw_result($result,$server);
+ $Fields{'hostname'} = $server;
+ next if (! ©right_check(\%Fields));
+ # Store the result in the mysql database
+ my $result = &Apache::lonmysql::store_row($table,\%Fields);
+ if (! defined($result)) {
+ &write_status($r,&Apache::lonmysql::get_error());
+ }
+ # &write_status($r,&Apache::lonmysql::get_debug());
+ $hitcountsum ++;
+ } # End of foreach (@results)
+ $fh->close();
+ # $server is only deleted if the results file has been
+ # found and (successfully) opened. This may be a bad idea.
+ delete($Server_status{$server});
+ #&write_status($r,"Received $new_count more results from ".
+ # $server.".");
+ }
+ }
+ # Finished looping through the servers
+ }
+ &Apache::lonmysql::disconnect_from_db();
+ # Let the user know
+ #
+ # We have run out of time or run out of servers to talk to and
+ # results to get.
+ &write_status($r,"Search completed.");
+ if ($hitcountsum) {
+ &write_status($r,$hitcountsum." successful matches to your query.");
+ } else {
+ &write_status($r,"There were no successful matches to your query.");
+ }
+ return;
+}
+
+######################################################################
+######################################################################
+=pod
+
+=item &display_buttons
+
+=cut
+
+######################################################################
+######################################################################
+sub display_buttons {
+ my ($current_min,$show,$total,$parms) = @_;
+ return '' if ($show eq 'all'); # No links if you get them all at once.
+ my $links;
+ ##
+ ## Prev
+ my $prev_min = $current_min - $show;
+ $prev_min = 0 if $prev_min < 0;
+ if ($prev_min < $current_min) {
+ $links .= qq{
+<a href="/adm/searchcat?$parms&startwith=$prev_min&show=$show">prev</a>
+};
+ }
+ ##
+ ## Pages.... Someday.
+ ##
+
+ ##
+ ## Next
+ my $next_min = $current_min + $show;
+ my $next_min = $current_min if ($next_min > $total);
+ if ($next_min != $current_min) {
+ $links .= qq{
+<a href="/adm/searchcat?$parms&startwith=$next_min&show=$show">next</a>
+};
+ }
+ return $links;
+}
+######################################################################
+######################################################################
+
+=pod
+
+=item &display_results
+
+=cut
+
+######################################################################
+######################################################################
+sub display_results {
+ my ($r,$mode,$importbutton,$closebutton) = @_;
+ ##
+ ## Set viewing function
+ ##
+ my $viewfunction = $Views{$ENV{'form.viewselect'}};
+ if (!defined($viewfunction)) {
+ $r->print("Internal Error - Bad view selected.\n");
+ $r->rflush();
+ return;
+ }
+ ##
+ ## Get the catalog controls setup
+ ##
+ my $action = "/adm/searchcat";
+ if ($mode eq 'Basic') {
+ $action .= "?reqinterface=basic";
+ } elsif ($mode eq 'Advanced') {
+ $action .= "?reqinterface=advanced";
+ }
+ $r->print(<<CATALOGCONTROLS);
+<form name='results' method="post" action="$action">
+$hidden_fields
+<input type='hidden' name='acts' value='' />
+<input type='button' value='Revise search request'
+onClick='this.form.submit();' />
+$importbutton
+$closebutton
+<hr />
+CATALOGCONTROLS
+ if (! tie(%groupsearch_db,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
+ $r->print('Unable to tie hash to db file</body></html>');
+ $r->rflush();
+ return;
+ }
+ ##
+ ## Prepare the table for querying
+ ##
+ my $table = $ENV{'form.table'};
+ my $connection_result = &Apache::lonmysql::connect_to_db();
+ if (!defined($connection_result)) {
+ &write_status($r,&Apache::lonmysql::get_error());
+ }
+ my $table_check = &Apache::lonmysql::check_table($table);
+ if (! defined($table_check)) {
+ $r->print("A MySQL error has occurred.</body></html>");
+ &Apache::lonnet::logthis("lonmysql was unable to determine the status".
+ " of table ".$table);
+ return;
+ } elsif (! $table_check) {
+ $r->print("The table of results could not be found.");
+ &Apache::lonnet::logthis("The user requested a table, ".$table.
+ ", that could not be found.");
+ return;
+ }
+ ##
+ ## Get the number of results
+ ##
+ my $total_results = &Apache::lonmysql::number_of_rows($table);
+ if (! defined($total_results)) {
+ $r->print("A MySQL error has occurred.</body></html>");
+ &Apache::lonnet::logthis("lonmysql was unable to determine the number".
+ " of rows in table ".$table);
+ &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
+ &Apache::lonnet::logthis(&Apache::lonmysql::get_debug());
+ return;
+ }
+ if ($total_results == 0) {
+ $r->print("There were no results matching your query.\n".
+ "</form></body></html>");
+ return;
+ }
+ ##
+ ## Determine how many results we need to get
+ ##
+ $ENV{'form.startwith'} = 0 if (! exists($ENV{'form.startwith'}));
+ $ENV{'form.show'} = 'all' if (! exists($ENV{'form.show'}));
+ my $min = $ENV{'form.startwith'};
+ my $max;
+ if ($ENV{'form.show'} eq 'all') {
+ $max = $total_results ;
+ } else {
+ $max = $min + $ENV{'form.show'};
+ }
+ ##
+ ## Output links (if necessary) for 'prev' and 'next' pages.
+ ##
+
+ ##
+ ## Get results from MySQL table
+ ##
+ my @Results = &Apache::lonmysql::get_rows($table,
+ 'id>'.$min.' AND id<='.$max);
+ ##
+ ## Loop through the results and output them.
+ ##
+ foreach my $row (@Results) {
+ my %Fields = %{&parse_row(@$row)};
+ my $output="<p>\n";
+ $output.=&catalogmode_output($Fields{'title'},$Fields{'url'});
+ # Render the result into html
+ $output.= &$viewfunction(%Fields);
+ $output.="</p>\n<hr align='left' width='200' noshade />";
+ # Print them out as they come in.
+ $r->print($output);
+ $r->rflush();
+ }
+ if (@Results < 1) {
+ $r->print("There were no results matching your query");
+ }
+ $r->print("</body></html>");
+ $r->rflush();
+ untie %groupsearch_db;
+ return;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &catalogmode_output($title,$url)
+
+Returns html needed for the various catalog modes. Gets inputs from
+$ENV{'form.catalogmode'}. Stores data in %groupsearch_db and $fnum
+(local variable).
+
+=cut
+
+######################################################################
+######################################################################
+{
+my $fnum;
+
+sub catalogmode_output {
+ my $output = '';
+ my ($title,$url) = @_;
+ if ($ENV{'form.catalogmode'} eq 'interactive') {
+ $title=~ s/\'/\\'/g; # ' Escape single quotes.
+ if ($ENV{'form.catalogmode'} eq 'interactive') {
+ $output.=<<END
+<font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
+onClick="javascript:select_data('$title','$url')">
+</font>
+END
+ }
+ }
+ if ($ENV{'form.catalogmode'} eq 'groupsearch') {
+ $fnum+=0;
+ $groupsearch_db{"pre_${fnum}_link"}=$url;
+ $groupsearch_db{"pre_${fnum}_title"}=$title;
+ $output.=<<END;
+<font size='-1'>
+<input type="checkbox" name="returnvalues" value="SELECT"
+onClick="javascript:queue($fnum)" />
+</font>
+END
+ $fnum++;
+ }
+ return $output;
+}
+
+}
+######################################################################
+######################################################################
+
+=pod
+
+=item &parse_row
+
+Parse a row returned from the database.
+
+=cut
+
+######################################################################
+######################################################################
+sub parse_row {
+ my @Row = @_;
+ my %Fields;
+ for (my $i=0;$i<=$#Row;$i++) {
+ $Fields{$DataOrder[$i]}=&Apache::lonnet::unescape($Row[$i]);
+ }
+ $Fields{'language'} =
+ &Apache::loncommon::languagedescription($Fields{'lang'});
+ $Fields{'copyrighttag'} =
+ &Apache::loncommon::copyrightdescription($Fields{'copyright'});
+ $Fields{'mimetag'} =
+ &Apache::loncommon::filedescription($Fields{'mime'});
+ return \%Fields;
+}
+
+###########################################################
+###########################################################
+
+=pod
+
+=item &parse_raw_result()
+
+Takes a line from the file of results and parse it. Returns a hash
+with keys for the following fields:
+'title', 'author', 'subject', 'url', 'keywords', 'version', 'notes',
+'abstract', 'mime', 'lang', 'owner', 'copyright', 'creationdate',
+'lastrevisiondate'.
+
+In addition, the following tags are set by calling the appropriate
+lonnet function: 'language', 'cprtag', 'mimetag'.
+
+The 'title' field is set to "Untitled" if the title field is blank.
+
+'abstract' and 'keywords' are truncated to 200 characters.
+
+=cut
+
+###########################################################
+###########################################################
+sub parse_raw_result {
+ my ($result,$hostname) = @_;
+ # Check for a comma - if it is there then we do not need to unescape the
+ # string. There seems to be some kind of problem with some items in
+ # the database - the entire string gets sent out unescaped...?
+ unless ($result =~ /,/) {
+ $result = &Apache::lonnet::unescape($result);
+ }
+ my @fields=map {
+ &Apache::lonnet::unescape($_);
+ } (split(/\,/,$result));
+ my ($title,$author,$subject,$url,$keywords,$version,
+ $notes,$abstract,$mime,$lang,
+ $creationdate,$lastrevisiondate,$owner,$copyright)=@fields;
+ my %Fields =
+ ( title => &Apache::lonnet::unescape($title),
+ author => &Apache::lonnet::unescape($author),
+ subject => &Apache::lonnet::unescape($subject),
+ url => &Apache::lonnet::unescape($url),
+ keywords => &Apache::lonnet::unescape($keywords),
+ version => &Apache::lonnet::unescape($version),
+ notes => &Apache::lonnet::unescape($notes),
+ abstract => &Apache::lonnet::unescape($abstract),
+ mime => &Apache::lonnet::unescape($mime),
+ lang => &Apache::lonnet::unescape($lang),
+ owner => &Apache::lonnet::unescape($owner),
+ copyright => &Apache::lonnet::unescape($copyright),
+ creationdate => &Apache::lonnet::unescape($creationdate),
+ lastrevisiondate => &Apache::lonnet::unescape($lastrevisiondate)
+ );
+ $Fields{'language'} =
+ &Apache::loncommon::languagedescription($Fields{'lang'});
+ $Fields{'copyrighttag'} =
+ &Apache::loncommon::copyrightdescription($Fields{'copyright'});
+ $Fields{'mimetag'} =
+ &Apache::loncommon::filedescription($Fields{'mime'});
+ if ($Fields{'author'}=~/^(\s*|error)$/) {
+ $Fields{'author'}="Unknown Author";
+ }
+ # Put spaces in the keyword list, if needed.
+ $Fields{'keywords'}=~ s/,([A-z])/, $1/g;
+ if ($Fields{'title'}=~ /^\s*$/ ) {
+ $Fields{'title'}='Untitled';
+ }
+ unless ($ENV{'user.adv'}) {
+ # What is this anyway?
+ $Fields{'keywords'} = '- not displayed -';
+ $Fields{'notes'} = '- not displayed -';
+ $Fields{'abstract'} = '- not displayed -';
+ $Fields{'subject'} = '- not displayed -';
+ }
+ if (length($Fields{'abstract'})>200) {
+ $Fields{'abstract'} =
+ substr($Fields{'abstract'},0,200).'...';
+ }
+ if (length($Fields{'keywords'})>200) {
+ $Fields{'keywords'} =
+ substr($Fields{'keywords'},0,200).'...';
+ }
+ return %Fields;
+}
+
+###########################################################
+###########################################################
+
+=pod
+
+=item &handle_custom_fields()
+
+=cut
+
+###########################################################
+###########################################################
+sub handle_custom_fields {
+ my @results = @{shift()};
+ my $customshow='';
+ my $extrashow='';
+ my @customfields;
+ if ($ENV{'form.customshow'}) {
+ $customshow=$ENV{'form.customshow'};
+ $customshow=~s/[^\w\s]//g;
+ my @fields=map {
+ "<font color=\"#008000\">$_:</font><!-- $_ -->";
+ } split(/\s+/,$customshow);
+ @customfields=split(/\s+/,$customshow);
+ if ($customshow) {
+ $extrashow="<ul><li>".join("</li><li>",@fields)."</li></ul>\n";
+ }
+ }
+ my $customdata='';
+ my %customhash;
+ foreach my $result (@results) {
+ if ($result=~/^(custom\=.*)$/) { # grab all custom metadata
+ my $tmp=$result;
+ $tmp=~s/^custom\=//;
+ my ($k,$v)=map {&Apache::lonnet::unescape($_);
+ } split(/\,/,$tmp);
+ $customhash{$k}=$v;
+ }
+ }
+ return ($extrashow,\@customfields,\%customhash);
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &search_results_header
+
+Output the proper html headers and javascript code to deal with different
+calling modes.
+
+Takes most inputs directly from %ENV, except $mode.
+
+=over 4
+
+=item $mode is either (at this writing) 'Basic' or 'Advanced'
+
+=back
+
+The following environment variables are checked:
+
+=over 4
+
+=item 'form.catalogmode'
+
+Checked for 'interactive' and 'groupsearch'.
+
+=item 'form.mode'
+
+Checked for existance & 'edit' mode.
+
+=item 'form.form'
+
+=item 'form.element'
+
+=back
+
+=cut
+
+######################################################################
+######################################################################
+sub search_results_header {
+ my ($mode,$pretty_query) = @_;
+ $mode = lc($mode);
+ my $title;
+ if ($mode eq 'advanced') {
+ $title = "Advanced Search Results";
+ } elsif ($mode eq 'basic') {
+ $title = "Basic Search Results";
+ }
+ my $result = '';
# output beginning of search page
- $r->print(<<BEGINNING);
+ $result.=<<BEGINNING;
<html>
<head>
-<title>The LearningOnline Network with CAPA</title>
+<title>$title</title>
BEGINNING
-
# conditional output of script functions dependent on the mode in
# which the search was invoked
- $r->print(<<SCRIPT) if $ENV{'form.catalogmode'} eq 'interactive';
+ if ($ENV{'form.catalogmode'} eq 'interactive'){
+ if (! exists($ENV{'form.mode'}) || $ENV{'form.mode'} ne 'edit') {
+ $result.=<<SCRIPT;
<script type="text/javascript">
function select_data(title,url) {
changeTitle(title);
@@ -886,7 +2062,30 @@ BEGINNING
}
</script>
SCRIPT
- $r->print(<<SCRIPT) if $ENV{'form.catalogmode'} eq 'groupsearch';
+ } elsif ($ENV{'form.mode'} eq 'edit') {
+ my $form = $ENV{'form.form'};
+ my $element = $ENV{'form.element'};
+ $result.=<<SCRIPT;
+<script type="text/javascript">
+function select_data(title,url) {
+ changeURL(url);
+ self.close();
+}
+function changeTitle(val) {
+}
+function changeURL(val) {
+ if (window.opener.document) {
+ window.opener.document.forms["$form"].elements["$element"].value=val;
+ } else {
+ var url = 'forms[\"$form\"].elements[\"$element\"].value';
+ alert("Unable to transfer data to "+url);
+ }
+}
+</script>
+SCRIPT
+ }
+ }
+ $result.=<<SCRIPT if $ENV{'form.catalogmode'} eq 'groupsearch';
<script type="text/javascript">
function select_data(title,url) {
// alert('DEBUG: Should be storing '+title+' and '+url);
@@ -900,12 +2099,13 @@ SCRIPT
}
}
function select_group() {
- window.location="/adm/groupsort?catalogmode=groupsearch&acts="+
+ window.location=
+ "/adm/groupsort?mode=$ENV{'form.mode'}&catalogmode=groupsearch&acts="+
document.forms.results.acts.value;
}
</script>
SCRIPT
- $r->print(<<SCRIPT);
+ $result.=<<SCRIPT;
<script type="text/javascript">
function displayinfo(val) {
popwin.document.forms.popremain.sdetails.value=val;
@@ -916,528 +2116,186 @@ SCRIPT
openhelpwin.focus();
}
function abortsearch(val) {
- openhelpwin=open('/adm/help/searchcat.html','helpscreen',
- 'scrollbars=1,width=400,height=300');
- openhelpwin.focus();
+ popwin.close();
}
</script>
SCRIPT
- $r->rflush();
-
- # begin showing the cataloged results
- $r->print(<<CATALOGBEGIN);
+ $result.=<<END;
</head>
<body bgcolor="#ffffff">
<img align=right src=/adm/lonIcons/lonlogos.gif>
-<h1>Search Catalog</h1>
-CATALOGBEGIN
- $r->print(<<CATALOGCONTROLS);
-<form name='results' method="post" action="/adm/searchcat">
-<input type='hidden' name='acts' value='' />
-<input type='button' value='Revise search request'
-onClick='this.form.submit();' />
-$importbutton
-$closebutton
-$persistent
-<hr />
-<h3>Search Query</h3>
-CATALOGCONTROLS
- if ($mode eq 'Basic') {
- $r->print(<<RESULTS);
-<p>
-<b>Basic search:</b> $ENV{'form.basicexp'}
-</p>
-RESULTS
- }
- elsif ($mode eq 'Advanced') {
- $r->print(<<RESULTS);
-<p>
-<b>Advanced search</b>
-$query
-</p>
-RESULTS
+<h1>$title</h1>
+END
+ if ($pretty_query) {
+ $result .= "<p>Search query: $pretty_query</p>";
}
- $r->print('<h3>Search Results</h3>');
- $r->rflush();
- my $servernum=(keys %rhash)+0;
+ return $result;
+}
- # define server grid (shows status of multiple machines)
- my $hcinit;
- my $grid="'<br />'+";
- $grid.="\n";
- my $sn=1;
- for my $sk (sort keys %rhash) {
- # '<a href="
- $grid.="'<a href=\"";
- # javascript:displayinfo('+
- $grid.="javascript:opener.displayinfo('+";
- # "'"+'key
- $grid.="\"'\"+'";
- $grid.=$sk;
- my $hc;
- if ($rhash{$sk} eq 'con_lost') {
- $hc="!!!BAD CONNECTION, CONTACT SYSTEM ADMINISTRATOR!!!";
- }
- else {
- $hc="'+\"'\"+\"+hc['$sk']+\"+\"'\"+'";
- $hcinit.="hc[\"$sk\"]=\"not yet connected...\";";
- }
- $grid.=" hitcount=".$hc;
- $grid.=" domain=".$hostdomains{$sk};
- $grid.=" IP=".$hostips{$sk};
- # '+"'"+'">'+
- $grid.="'+\"'\"+')\">'+";
- $grid.="\n";
- $grid.="'<img border=\"0\" name=\"img".$sn."\"".
- " src=\"/adm/lonIcons/srvnull.gif\" alt=\"".$sk."\" /></a>'+\n";
- $grid.="'<br />'+\n" unless $sn%10;
- $sn++;
- }
- $r->print(<<ENDPOP);
-<script type="text/javascript">
- popwin=open('','popwin','scrollbars=1,width=400,height=200');
- popwin.focus();
- popwin.document.writeln('<'+'html>');
- popwin.document.writeln('<'+'head>');
- popwin.document.writeln('<'+'script>');
- popwin.document.writeln('hc=new Array();$hcinit');
- popwin.document.writeln('<'+'/script>');
- popwin.document.writeln('<'+'/head>'+
- '<'+'body bgcolor="#FFFFFF">'+
- '<'+'image name="whirly" align="right" src="/adm/lonIcons/'+
- 'lonanim.gif" '+
- 'alt="animated logo" />'+
- '<'+'h3>Search Results Progress<'+'/h3>'+
- '<'+'form name="popremain">'+
- '<'+'tt>'+
- '<'+'br clear="all"/><i>PLEASE BE PATIENT</i>'+
- '<'+'br />SCANNING $servernum SERVERS'+
- '<'+'br clear="all" />Number of record hits found '+
- '<'+'input type="text" size="10" name="numhits"'+
- ' value="0" />'+
- '<'+'br clear="all" />Time elapsed '+
- '<'+'input type="text" size="10" name="elapsetime"'+
- ' value="0" />'+
- '<'+'br />'+
- 'SERVER GRID (click on any cell for details)'+
- $grid
- '<'+'br />'+
- 'Server details '+
- '<'+'input type="text" size="25" name="sdetails"'+
- ' value="" />'+
- '<'+'br />'+
- ' <'+'input type="button" name="button"'+
- ' value="abort search and view current results" '+
- ' onClick="javascript:opener.abortsearch()" />'+
- ' <'+'input type="button" name="button"'+
- ' value="help" onClick="javascript:opener.openhelp()" />'+
- '<'+'/tt>'+
- '<'+'/form>'+
- '<'+'/body><'+'/html>');
- popwin.document.close();
-</script>
-ENDPOP
- $r->rflush();
+######################################################################
+######################################################################
- my $servercount=0;
- my $hitcountsum=0;
- my $bloop=$servernum;
- my %orkey;
- BLOOP: while(1) {
- my $sn=0;
- last BLOOP unless $bloop;
- last BLOOP unless $timeremain;
- RLOOP: foreach my $rkey (sort keys %rhash) {
- $sn++;
- next RLOOP if $orkey{$rkey};
- $servercount++;
- $tflag=1;
- $compiledresult='';
- my $hostname=$rkey;
- my $reply=$rhash{$rkey};
- my @results;
-
- my $replyfile='';
-
- if ($reply eq 'con_lost') {
- $r->print('<script type="text/javascript">popwin.document.img'.
- $sn.'.'.
- 'src="/adm/lonIcons/srvbad.gif";</script>'.
- "\n");
- $r->rflush();
- $bloop--;
- $orkey{$rkey}=1;
- }
- else {
- $reply=~/^([\.\w]+)$/; # must do since 'use strict' checks for tainting
- $replyfile=$r->dir_config('lonDaemons').'/tmp/'.$1;
- $reply=~/(.*?)\_/;
- {
- my $temp=0;
- WLOOP: while (1) {
- if (-e $replyfile && $tflag) {
- $r->print('<script type="text/javascript">'.
- 'popwin.document.img'.$sn.'.'.
- 'src="/adm/lonIcons/srvhalf.gif";</script>'.
- "\n");
- $r->rflush();
- $r->print('<script type="text/javascript">'.
- 'popwin.hc["'.$rkey.'"]='.
- '"still transferring..."'.';</script>'.
- "\n");
- $r->rflush();
- $tflag=0;
- }
- if (-e "$replyfile.end") {
- $bloop--;
- $orkey{$rkey}=1;
- if (-s $replyfile) {
- $r->print('<script type="text/javascript">'.
- 'popwin.document.img'.$sn.'.'.
- 'src="/adm/lonIcons/srvgood.gif";'.
- '</script>'."\n");
- $r->rflush();
- my $fh=Apache::File->new($replyfile) or
- ($r->print('ERROR: file '.
- $replyfile.' cannot be opened') and
- return OK);
- @results=<$fh> if $fh;
- $hitcount{$rkey}=@results+0;
- $r->print('<script type="text/javascript">'.
- 'popwin.hc["'.$rkey.'"]='.
- $hitcount{$rkey}.';</script>'.
- "\n");
- $r->rflush();
- $hitcountsum+=$hitcount{$rkey};
- $r->print('<script type="text/javascript">'.
- 'popwin.document.forms.popremain.'.
- 'numhits.value='.$hitcountsum.
- ';</script>'.
- "\n");
- $r->rflush();
- }
- else {
- $r->print('<script type="text/javascript">'.
- 'popwin.document.img'.$sn.'.'.
- 'src="/adm/lonIcons/srvempty.gif";'.
- '</script>'.
- "\n");
- $r->rflush();
- $r->print('<script type="text/javascript">'.
- 'popwin.hc["'.$rkey.'"]=0'.
- ';</script>'.
- "\n");
- $r->rflush();
- }
- last WLOOP;
- }
- if ($temp>1) {
- sleep 1;
- $timeremain--;
- $elapsetime++;
- last WLOOP;
- }
- last WLOOP unless $timeremain;
- sleep 1;
- $timeremain--;
- $elapsetime++;
- $r->print('<script type="text/javascript">'.
- 'popwin.document.popremain.elapsetime.'.
- 'value="'.$elapsetime.'";</script>'."\n");
- $r->rflush();
- $temp++;
- }
- }
- $r->print('<script type="text/javascript">'.
- 'popwin.document.whirly.'.
- 'src="'.'/adm/lonIcons/lonanimend.gif'.
- '";</script>'."\n");
- $r->rflush();
- }
- my $customshow='';
- my $extrashow='';
- my @customfields;
- if ($ENV{'form.customshow'}) {
- $customshow=$ENV{'form.customshow'};
- $customshow=~s/[^\w\s]//g;
- my @fields=map {"<font color=\"#008000\">$_:</font><!-- $_ -->"}
- split(/\s+/,$customshow);
- @customfields=split(/\s+/,$customshow);
- if ($customshow) {
- $extrashow="<ul><li>".join("</li><li>",@fields)."</li></ul>\n";
- }
- }
- my $customdata='';
- my %customhash;
- foreach my $result (@results) {
- if ($result=~/^(custom\=.*)$/) { # grab all custom metadata
- my $tmp=$result;
- $tmp=~s/^custom\=//;
- my ($k,$v)=map {&Apache::lonnet::unescape($_);
- } split(/\,/,$tmp);
- $customhash{$k}=$v;
- }
- }
- if (keys %hash) {
- untie %hash;
- }
- if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
- if ($ENV{'form.launch'} eq '1') {
- &start_fresh_session();
- }
- foreach my $result (@results) {
- next if $result=~/^custom\=/;
- chomp $result;
- next unless $result;
- my @fields=map
- {&Apache::lonnet::unescape($_)}
- (split(/\,/,$result));
- my ($title,$author,$subject,$url,$keywords,$version,
- $notes,$abstract,$mime,$lang,
- $creationdate,$lastrevisiondate,$owner,$copyright)=@fields;
-
- unless ($ENV{'user.adv'}) {
- $keywords='<i>- not displayed -</i>';
- $fields[4]=$keywords;
- $notes='<i>- not displayed -</i>';
- $fields[6]=$notes;
- $abstract='<i>- not displayed -</i>';
- $fields[7]=$abstract;
- $subject='<i>- not displayed -</i>';
- $fields[2]=$subject;
- }
-
- my $shortabstract=$abstract;
- $shortabstract=substr($abstract,0,200).'...' if length($abstract)>200;
- $fields[7]=$shortabstract;
- my $shortkeywords=$keywords;
- $shortkeywords=substr($keywords,0,200).'...' if length($keywords)>200;
- $fields[4]=$shortkeywords;
-
- my $extrashow2=$extrashow;
- if ($extrashow) {
- foreach my $field (@customfields) {
- my $value='';
- if ($customhash{$url}=~/\<${field}[^\>]*\>(.*?)\<\/${field}[^\>]*\>/s) {
- $value=$1;
- }
- $extrashow2=~s/\<\!\-\- $field \-\-\>/ $value/g;
- }
- }
-
- $compiledresult.=<<END if $compiledresult or $servercount!=$servernum;
-<hr align='left' width='200' noshade />
-END
- $compiledresult.=<<END;
-<p>
-END
- $compiledresult.=<<END if $ENV{'form.catalogmode'} eq 'interactive';
-<font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
-onClick="javascript:select_data('$title','$url')">
-</font>
-<br />
-END
- if ($ENV{'form.catalogmode'} eq 'groupsearch') {
- $fnum+=0;
- $hash{"pre_${fnum}_link"}=$url;
- $hash{"pre_${fnum}_title"}=$title;
- $compiledresult.=<<END;
-<font size='-1'><input type="checkbox" name="returnvalues" value="SELECT"
-onClick="javascript:queue($fnum)" />
-</font>
-<br />
-END
-# <input type="hidden" name="title$fnum" value="$title" />
-# <input type="hidden" name="url$fnum" value="$url" />
- $fnum++;
- }
- 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,
- $extrashow2);
- }
- elsif ($viewselect eq 'Summary View') {
- $compiledresult.=&summary_view(@fields,$hostname,$httphost,
- $extrashow2);
- }
- elsif ($viewselect eq 'Fielded Format') {
- $compiledresult.=&fielded_format_view(@fields,$hostname,
- $httphost,$extrashow2);
- }
- elsif ($viewselect eq 'XML/SGML') {
- $compiledresult.=&xml_sgml_view(@fields,$hostname,$httphost,
- $extrashow2);
- }
-
- }
+=pod
- untie %hash;
- }
- else {
- $r->print('<html><head></head><body>Unable to tie hash to db '.
- 'file</body></html>');
- }
- if ($compiledresult) {
- $resultflag=1;
- }
+=item Metadata Viewing Functions
- $r->print(<<RESULTS);
-$compiledresult
-RESULTS
- my $percent=sprintf('%3.0f',($servercount/$servernum*100));
- }
- }
- unless ($resultflag) {
- $r->print("\nThere were no results that matched your query\n");
- }
-# $r->print('<script type="text/javascript">'.'popwin.close()</script>'."\n"); $r->rflush();
- $r->print(<<RESULTS);
-</body>
-</html>
-RESULTS
-}
+Output is a HTML-ified string.
+Input arguments are title, author, subject, url, keywords, version,
+notes, short abstract, mime, language, creation date,
+last revision date, owner, copyright, hostname, and
+extra custom metadata to show.
+
+=over 4
+
+=item &detailed_citation_view()
+
+=cut
-# ------------------------------------------------------ Detailed Citation View
+######################################################################
+######################################################################
sub detailed_citation_view {
- my ($title,$author,$subject,$url,$keywords,$version,
- $notes,$shortabstract,$mime,$lang,
- $creationdate,$lastrevisiondate,$owner,$copyright,
- $hostname,$httphost,$extrashow)=@_;
+ my %values = @_;
my $result=<<END;
-<i>$owner</i>, last revised $lastrevisiondate
-<h3><A HREF="http://$httphost$url" TARGET='search_preview'>$title</A></h3>
-<h3>$author</h3>
-</p>
+<h3><a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
+ target='search_preview'>$values{'title'}</a></h3>
<p>
-<b>Subject:</b> $subject<br />
-<b>Keyword(s):</b> $keywords<br />
-<b>Notes:</b> $notes<br />
-<b>MIME Type:</b>
-END
- $result.=&Apache::loncommon::filedescription($mime);
- $result.=<<END;
-<br />
-<b>Language:</b>
-END
- $result.=&Apache::loncommon::languagedescription($lang);
- $result.=<<END;
-<br />
-<b>Copyright/Distribution:</b>
-END
- $result.=&Apache::loncommon::copyrightdescription($copyright);
- $result.=<<END;
-<br />
+<b>$values{'author'}</b>, <i>$values{'owner'}</i><br />
+
+<b>Subject: </b> $values{'subject'}<br />
+<b>Keyword(s): </b> $values{'keywords'}<br />
+<b>Notes: </b> $values{'notes'}<br />
+<b>MIME Type: </b> $values{'mimetag'}<br />
+<b>Language: </b> $values{'language'}<br />
+<b>Copyright/Distribution:</b> $values{'cprtag'}<br />
</p>
-$extrashow
+$values{'extrashow'}
<p>
-$shortabstract
+$values{'shortabstract'}
</p>
END
return $result;
}
-# ---------------------------------------------------------------- Summary View
+######################################################################
+######################################################################
+
+=pod
+
+=item &summary_view()
+
+=cut
+
+######################################################################
+######################################################################
sub summary_view {
- my ($title,$author,$subject,$url,$keywords,$version,
- $notes,$shortabstract,$mime,$lang,
- $creationdate,$lastrevisiondate,$owner,$copyright,
- $hostname,$httphost,$extrashow)=@_;
- my $cprtag=&Apache::loncommon::copyrightdescription($copyright);
+ my %values = @_;
my $result=<<END;
-<a href="http://$httphost$url" TARGET='search_preview'>$author</a><br />
-$title<br />
-$owner -- $lastrevisiondate<br />
-$cprtag<br />
-$extrashow
+<a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
+ target='search_preview'>$values{'author'}</a><br />
+$values{'title'}<br />
+$values{'owner'} -- $values{'lastrevisiondate'}<br />
+$values{'copyrighttag'}<br />
+$values{'extrashow'}
</p>
END
return $result;
}
-# -------------------------------------------------------------- Fielded Format
+######################################################################
+######################################################################
+
+=pod
+
+=item &fielded_format_view()
+
+=cut
+
+######################################################################
+######################################################################
sub fielded_format_view {
- my ($title,$author,$subject,$url,$keywords,$version,
- $notes,$shortabstract,$mime,$lang,
- $creationdate,$lastrevisiondate,$owner,$copyright,
- $hostname,$httphost,$extrashow)=@_;
- my $mimetag=&Apache::loncommon::filedescription($mime);
- my $language=&Apache::loncommon::languagedescription($lang);
- my $cprtag=&Apache::loncommon::copyrightdescription($copyright);
+ my %values = @_;
my $result=<<END;
-<b>URL: </b> <A HREF="http://$httphost$url" TARGET='search_preview'>$url</A>
+<b>URL: </b> <a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
+ target='search_preview'>$values{'url'}</a>
<br />
-<b>Title:</b> $title<br />
-<b>Author(s):</b> $author<br />
-<b>Subject:</b> $subject<br />
-<b>Keyword(s):</b> $keywords<br />
-<b>Notes:</b> $notes<br />
-<b>MIME Type:</b> $mimetag<br />
-<b>Language:</b> $language<br />
-<b>Creation Date:</b> $creationdate<br />
-<b>Last Revision Date:</b> $lastrevisiondate<br />
-<b>Publisher/Owner:</b> $owner<br />
-<b>Copyright/Distribution:</b> $cprtag<br />
-<b>Repository Location:</b> $hostname<br />
-<b>Abstract:</b> $shortabstract<br />
-$extrashow
+<b>Title:</b> $values{'title'}<br />
+<b>Author(s):</b> $values{'author'}<br />
+<b>Subject:</b> $values{'subject'}<br />
+<b>Keyword(s):</b> $values{'keywords'}<br />
+<b>Notes:</b> $values{'notes'}<br />
+<b>MIME Type:</b> $values{'mimetag'}<br />
+<b>Language:</b> $values{'language'}<br />
+<b>Creation Date:</b> $values{'creationdate'}<br />
+<b>Last Revision Date:</b> $values{'lastrevisiondate'}<br />
+<b>Publisher/Owner:</b> $values{'owner'}<br />
+<b>Copyright/Distribution:</b> $values{'copyrighttag'}<br />
+<b>Repository Location:</b> $values{'hostname'}<br />
+<b>Abstract:</b> $values{'shortabstract'}<br />
+$values{'extrashow'}
</p>
END
return $result;
}
-# -------------------------------------------------------------------- XML/SGML
+######################################################################
+######################################################################
+
+=pod
+
+=item &xml_sgml_view()
+
+=back
+
+=cut
+
+######################################################################
+######################################################################
sub xml_sgml_view {
- my ($title,$author,$subject,$url,$keywords,$version,
- $notes,$shortabstract,$mime,$lang,
- $creationdate,$lastrevisiondate,$owner,$copyright,
- $hostname,$httphost,$extrashow)=@_;
- my $cprtag=&Apache::loncommon::copyrightdescription($copyright);
- my $mimetag=&Apache::loncommon::filedescription($mime);
- my $language=&Apache::loncommon::languagedescription($lang);
+ my %values = @_;
my $result=<<END;
<pre>
<LonCapaResource>
-<url>$url</url>
-<title>$title</title>
-<author>$author</author>
-<subject>$subject</subject>
-<keywords>$keywords</keywords>
-<notes>$notes</notes>
+<url>$values{'url'}</url>
+<title>$values{'title'}</title>
+<author>$values{'author'}</author>
+<subject>$values{'subject'}</subject>
+<keywords>$values{'keywords'}</keywords>
+<notes>$values{'notes'}</notes>
<mimeInfo>
-<mime>$mime</mime>
-<mimetag>$mimetag</mimetag>
+<mime>$values{'mime'}</mime>
+<mimetag>$values{'mimetag'}</mimetag>
</mimeInfo>
<languageInfo>
-<language>$lang</language>
-<languagetag>$language</languagetag>
+<language>$values{'lang'}</language>
+<languagetag>$values{'language'}</languagetag>
</languageInfo>
-<creationdate>$creationdate</creationdate>
-<lastrevisiondate>$lastrevisiondate</lastrevisiondate>
-<owner>$owner</owner>
+<creationdate>$values{'creationdate'}</creationdate>
+<lastrevisiondate>$values{'lastrevisiondate'}</lastrevisiondate>
+<owner>$values{'owner'}</owner>
<copyrightInfo>
-<copyright>$copyright</copyright>
-<copyrighttag>$cprtag</copyrighttag>
+<copyright>$values{'copyright'}</copyright>
+<copyrighttag>$values{'copyrighttag'}</copyrighttag>
</copyrightInfo>
-<repositoryLocation>$hostname</repositoryLocation>
-<shortabstract>$shortabstract</shortabstract>
+<repositoryLocation>$values{'hostname'}</repositoryLocation>
+<shortabstract>$values{'shortabstract'}</shortabstract>
</LonCapaResource>
</pre>
-$extrashow
+$values{'extrashow'}
END
return $result;
}
-# ---------------------------------------------------- see if a field is filled
+######################################################################
+######################################################################
+
+=pod
+
+=item &filled() see if field is filled.
+
+=cut
+
+######################################################################
+######################################################################
sub filled {
my ($field)=@_;
if ($field=~/\S/ && $field ne 'any') {
@@ -1448,12 +2306,20 @@ sub filled {
}
}
-# ---------------- Message to output when there are not enough fields filled in
+######################################################################
+######################################################################
+
+=pod
+
+=item &output_blank_field_error()
+
+=cut
+
+######################################################################
+######################################################################
sub output_blank_field_error {
- my ($r)=@_;
+ my ($r,$closebutton)=@_;
# make query information persistent to allow for subsequent revision
- my $persistent=&make_persistent();
-
$r->print(<<BEGINNING);
<html>
<head>
@@ -1465,7 +2331,7 @@ BEGINNING
<img align='right' src='/adm/lonIcons/lonlogos.gif' />
<h1>Search Catalog</h1>
<form method="post" action="/adm/searchcat">
-$persistent
+$hidden_fields
<input type='button' value='Revise search request'
onClick='this.form.submit();' />
$closebutton
@@ -1482,24 +2348,38 @@ processed.
RESULTS
}
-# ----------------------------------------------------------- Output date error
+######################################################################
+######################################################################
+
+=pod
+
+=item &output_date_error()
+
+Output a full html page with an error message.
+
+Inputs:
+
+ $r, the request pointer.
+ $message, the error message for the user.
+ $closebutton, the specialized close button needed for groupsearch.
+
+=cut
+
+######################################################################
+######################################################################
sub output_date_error {
- my ($r,$message)=@_;
+ my ($r,$message,$closebutton)=@_;
# make query information persistent to allow for subsequent revision
- my $persistent=&make_persistent();
-
- $r->print(<<BEGINNING);
+ $r->print(<<RESULTS);
<html>
<head>
<title>The LearningOnline Network with CAPA</title>
-BEGINNING
- $r->print(<<RESULTS);
</head>
<body bgcolor="#ffffff">
<img align='right' src='/adm/lonIcons/lonlogos.gif' />
<h1>Search Catalog</h1>
<form method="post" action="/adm/searchcat">
-$persistent
+$hidden_fields
<input type='button' value='Revise search request'
onClick='this.form.submit();' />
$closebutton
@@ -1513,15 +2393,28 @@ $message
RESULTS
}
-# --------- settings whenever the user causes the search window to be launched
+######################################################################
+######################################################################
+
+=pod
+
+=item &start_fresh_session()
+
+Cleans the global %groupsearch_db by removing all fields which begin with
+'pre_' or 'store'.
+
+=cut
+
+######################################################################
+######################################################################
sub start_fresh_session {
- delete $hash{'mode_catalog'};
- foreach (keys %hash) {
+ delete $groupsearch_db{'mode_catalog'};
+ foreach (keys %groupsearch_db) {
if ($_ =~ /^pre_/) {
- delete $hash{$_};
+ delete $groupsearch_db{$_};
}
if ($_ =~ /^store/) {
- delete $hash{$_};
+ delete $groupsearch_db{$_};
}
}
}
@@ -1530,244 +2423,8 @@ sub start_fresh_session {
__END__
-=head1 NAME
-
-Apache::lonsearchcat - mod_perl module for handling a searchable catalog
-
-=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
-
-=item *
-
-Initializes %language hash table.
-
-=item *
-
-Initializes %cprtag hash table (for copyright.tab).
-
-=item *
-
-Initializes %mimetag hash table (for filetypes.tab).
-
-=item *
-
-Initializes %hostdomains and hostips hash table (for hosts.tab).
-
-=back
-
-=head1 HANDLER SUBROUTINE
-
-This routine is called by Apache and mod_perl.
+=pod
-=over 4
-
-=item *
-
-configure dynamic components of interface
-
-=item *
-
-determine current user
-
-=item *
-
-see if a search invocation should be done
-
-=item *
-
-else, begin building search interface to output
-
-=item *
-
-compute date selection boxes
-
-=item *
-
-compute customized metadata field
-
-=item *
-
-print screen
-
-=back
-
-=head1 OTHER SUBROUTINES
-
-=over 4
-
-=item *
-
-get_unprocessed_cgi() : reads in critical name/value pairs that may have not
-been processed and passed into %ENV by the web server
-
-=item *
-
-make_persistent() : makes a set of hidden HTML fields to make
-SQL search interface information to be persistent
-
-=back
-
-WEB INTERFACE COMPONENT FUNCTIONS
-
-=over 4
-
-=item *
-
-simpletextfield(name,value) : returns HTML formatted string for simple text
-field
-
-=item *
-
-simplecheckbox(name,value) : returns HTML formatted string for simple
-checkbox
-
-=item *
-
-searchphrasefield(title,name,value) : returns HTML formatted string for
-a search expression phrase field
-
-=item *
-
-dateboxes(name, defaultmonth, defaultday, defaultyear) : returns HTML
-formatted string for a calendar date
-
-=item *
-
-selectbox(title,name,value,%HASH=options) : returns HTML formatted string for
-a selection box field
-
-=back
-
-SEARCH FUNCTIONS
-
-=over 4
-
-=item *
-
-advancedsearch(server reference, environment reference) : perform a complex
-multi-field logical query
-
-=item *
-
-basicsearch(server reference, environment reference) : perform a simple
-single-field logical query
-
-=item *
-
-build_SQL_query(field name, logic) : builds a SQL query string from a
-logical expression with AND/OR keywords
-
-=item *
-
-build_custommetadata_query(field_name, logic_statement) : builds a perl
-regular expression from a logical expression with AND/OR keywords
-
-=item *
-
-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
-
-=item *
-
-build_date_queries(cmonth1, cday1, cyear1, cmonth2, cday2, cyear2,
-lmonth1, lday1, lyear1, lmonth2, lday2, lyear2) :
-Builds a SQL logic query to check time/date entries.
-
-=back
-
-OUTPUTTING RESULTS FUNCTION
-
-=over 4
-
-=item *
-
-output_results(output mode, server reference, environment reference,
-reply list reference) : outputs results from search
-
-=back
-
-DIFFERENT WAYS TO VIEW METADATA RECORDS
-
-=over 4
-
-=item *
-
-detailed_citation_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) :
-see metadata viewing notes below
-
-=item *
-
-summary_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) :
-see metadata viewing notes below
-
-=item *
-
-fielded_format_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) :
-see metadata viewing notes below
-
-=item *
-
-xml_sgml_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) :
-see metadata viewing notes below
-
-=back
-
- _____________________________________________________________________
- | * Metadata viewing notes |
- | 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. |
- ---------------------------------------------------------------------
-
-TEST CONDITIONAL FUNCTIONS
-
-=over 4
-
-=item *
-
-filled(field) : determines whether a given field has been filled
-
-=back
-
-ERROR FUNCTIONS
-
-=over 4
-
-=item *
-
-output_blank_field_error(server reference) : outputs a message saying that
-more fields need to be filled in
-
-=item *
-
-output_date_error(server reference, error message) : outputs
-an error message specific to bad date format.
-
-=back
+=back
=cut