--- loncom/interface/lonsearchcat.pm 2002/06/10 23:55:47 1.120
+++ loncom/interface/lonsearchcat.pm 2002/06/19 19:40:38 1.122
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# Search Catalog
#
-# $Id: lonsearchcat.pm,v 1.120 2002/06/10 23:55:47 harris41 Exp $
+# $Id: lonsearchcat.pm,v 1.122 2002/06/19 19:40:38 matthew Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -31,10 +31,42 @@
# 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
+
+=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 ##
## ##
@@ -60,20 +92,82 @@ use Apache::loncommon();
# ---------------------------------------- variables used throughout the module
+######################################################################
+######################################################################
+
+=pod
+
+=item Global variables
+
+=over 4
+
+=item %hostdomains
+
+matches host name to host domain
+
+=item %hostips
+
+matches host name to host ip
+
+=item %hitcount
+
+stores number of hits per host
+
+=item $closebutton
+
+button that closes the search window
+
+=item $importbutton
+
+button to take the selecte results and go to group sorting
+
+=item $hidden
+
+holds 'hidden' html forms
+
+=item $scrout
+
+string that holds portions of the screen output
+
+=item $yourself
+
+allows for quickly limiting to oneself
+
+=item %hash
+
+The ubiquitous database hash
+
+=item $basicviewselect and $advancedviewselect
+
+View selection forms. These are not actually global and will be
+moved soon.
+
+=item $diropendb
+
+The full path to the (temporary) search database file. This is set and
+used in &handler() and is also used in &output_results().
+
+=back
+
+=cut
+
+######################################################################
+######################################################################
+
# -- information holders
my %hostdomains; # matches host name to host domain
-my %hostips; # matches host name to host ip
-my %hitcount; # stores number of hits per host
+my %hostips; # matches host name to host ip
+my %hitcount; # stores number of hits per host
# -- dynamically rendered interface components
-my $closebutton; # button that closes the search window
+my $closebutton; # button that closes the search window
my $importbutton; # button to take the selected results and go to group sorting
-my $hidden;
+my $hidden; # Holds 'hidden' html forms
# -- miscellaneous variables
-my $scrout; # string that holds portions of the screen output
+my $scrout; # string that holds portions of the screen output
my $yourself; # allows for quickly limiting to oneself
-my %hash;
+my %hash; # database hash
# ------------------------------------------ choices for different output views
# Detailed Citation View ---> sub detailed_citation_view
@@ -99,25 +193,39 @@ Detailed Citation View
END
+#------------------------------------------------------------- global variables
+my $diropendb = "";
+my $domain = "";
+
# ----------------------------------------------------------------------- BEGIN
+
+=pod
+
+=item BEGIN block
+
+Load %hostdomains and %hostips with data from lonnet.pm. Only library
+servers are considered.
+
+=cut
+
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;
- }
- }
+ foreach (keys (%Apache::lonnet::libserv)) {
+ $hostdomains{$_}=$Apache::lonnet::hostdom{$_};
+ $hostips{$_}=$Apache::lonnet::hostip{$_};
}
}
-#------------------------------------------------------------- global variables
-my $diropendb = "";
-my $domain = "";
+######################################################################
+######################################################################
+
+=pod
+=item &handler() - main handler invoked by httpd child
+
+=cut
+
+######################################################################
+######################################################################
# ----------------------------- Handling routine called via Apache and mod_perl
sub handler {
my $r = shift;
@@ -127,8 +235,9 @@ sub handler {
$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";
+ my $domain = $r->dir_config('lonDefDomain');
+ $diropendb= "/home/httpd/perl/tmp/".&Apache::lonnet::escape($domain).
+ "\_".&Apache::lonnet::escape($ENV{'user.name'})."_searchcat.db";
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
['catalogmode','launch','acts','mode','form','element']);
@@ -137,8 +246,7 @@ sub handler {
if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
&start_fresh_session();
untie %hash;
- }
- else {
+ } else {
$r->print('
Unable to tie hash to db '.
'file');
return OK;
@@ -370,7 +478,21 @@ ENDDOCUMENT
return OK;
}
-# ------------------------------------------------------------- make persistent
+######################################################################
+######################################################################
+
+=pod
+
+=item &make_persistent()
+
+Returns a scalar which holds the current ENV{'form.*'} values in
+a 'hidden' html input tag.
+
+=cut
+
+######################################################################
+######################################################################
+
sub make_persistent {
my $persistent='';
@@ -388,31 +510,73 @@ END
return $persistent;
}
-# --------------------------------------------------------- Various form fields
+
+######################################################################
+######################################################################
+
+=pod
+
+=item HTML form building functions
+
+=over 4
+
+=item &simpletextfield()
+
+Inputs: $name,$value,$size
+
+Returns a text input field with the given name, value, and size.
+If size is not specified, a value of 20 is used.
+
+=item &simplecheckbox()
+
+Inputs: $name,$value
+
+Returns a simple check box with the given $name.
+If $value eq 'on' the box is checked.
+
+=item &searchphrasefield()
+
+Inputs: $title,$name,$value
+
+Returns html for a title line and an input field for entering search terms.
+the instructions "Enter terms or phrases separated by search operators such
+as AND, OR, or NOT." are given following the title. The entry field (which
+is where the $name and $value are used) is an 80 column simpletextfield.
+
+=item &dateboxes()
+
+=item &selectbox()
+
+=back
+
+=cut
+
+######################################################################
+######################################################################
sub simpletextfield {
- my ($name,$value)=@_;
- return '';
+ my ($name,$value,$size)=@_;
+ $size = 20 if (! defined($size));
+ return '';
}
sub simplecheckbox {
my ($name,$value)=@_;
my $checked='';
$checked="CHECKED" if $value eq 'on';
- return '';
+ return '';
}
sub searchphrasefield {
my ($title,$name,$value)=@_;
my $instruction=<$uctitle:".
- " $instruction ".
- '';
+ return "\n".
+ '
'.$uctitle.':'.
+ " $instruction ".&simpletextfield($name,$value,80);
}
sub dateboxes {
@@ -462,26 +626,35 @@ END
sub selectbox {
my ($title,$name,$value,$anyvalue,$anytag,$functionref,@idlist)=@_;
my $uctitle=uc($title);
- my $selout="\n