--- loncom/interface/lonsearchcat.pm 2001/08/28 12:12:38 1.100 +++ loncom/interface/lonsearchcat.pm 2001/12/11 02:18:13 1.109 @@ -1,105 +1,48 @@ # The LearningOnline Network with CAPA -# # Search Catalog # -# YEAR=2001 -# 03/08/2001 Scott Harrison -# Scott Harrison: 03/12/2001, 03/13/2001, 03/14/2001, 03/15/2001, 03/19/2001 -# Scott Harrison: 03/20/2001, 03/21/2001, 03/22/2001, 03/26/2001, 03/27/2001 -# Scott Harrison: 04/02/2001, 08/15/2001, 08/24/2001, 08/25/2001 - -############################################################################### -## ## -## ORGANIZATION OF THIS PERL MODULE ## -## ## -## 1. Description of functions ## -## 2. Modules used by this module ## -## 3. Choices for different output views (detailed, summary, xml, etc) ## -## 4. BEGIN block (to be run once after compilation) ## -## 5. Handling routine called via Apache and mod_perl ## -## 6. Other subroutines ## -## ## -############################################################################### - -# ---------------------------------------------------- Description of functions -# +# $Id: lonsearchcat.pm,v 1.109 2001/12/11 02:18:13 harris41 Exp $ # -# === WEB HANDLER FUNCTIONS -# BEGIN() : run once after compilation to initialize values -# handler(server reference) : interacts with the Apache server layer -# (for /adm/searchcat URLs) -# get_unprocessed_cgi() : reads in critical name/value pairs that may have not -# been processed and passed into %ENV by the web server -# make_persistent() : makes a set of hidden HTML fields to make -# SQL search interface information to be persistent +# Copyright Michigan State University Board of Trustees # +# This file is part of the LearningOnline Network with CAPA (LON-CAPA). # -# === WEB INTERFACE COMPONENT FUNCTIONS -# simpletextfield(name,value) : returns HTML formatted string for simple text -# field -# simplecheckbox(name,value) : returns HTML formatted string for simple -# checkbox -# searchphrasefield(title,name,value) : returns HTML formatted string for -# a search expression phrase field -# dateboxes(name, defaultmonth, defaultday, defaultyear) : returns HTML -# formatted string -# for a calendar date -# selectbox(title,name,value,%HASH=options) : returns HTML formatted string for -# a selection box field +# LON-CAPA is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. # +# LON-CAPA is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. # -# === SEARCH FUNCTIONS -# advancedsearch(server reference, environment reference) : perform a complex -# multi-field logical query -# basicsearch(server reference, environment reference) : perform a simple -# single-field logical query -# build_SQL_query(field name, logic) : builds a SQL query string from a -# logical expression with AND/OR keywords -# build_custommetadata_query(field_name, logic_statement) : builds a perl -# regular expression from a logical expression with AND/OR -# keywords -# recursive_SQL_query_build(field name, reverse notation expression) : -# builds a SQL query string from a reverse notation expression -# logical expression with AND/OR keywords -# 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. +# You should have received a copy of the GNU General Public License +# along with LON-CAPA; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # +# /home/httpd/html/adm/gpl.txt # -# === OUTPUTTING RESULTS FUNCTION -# output_results(output mode, -# server reference, -# environment reference, -# reply list reference) : outputs results from search -# -# -# === DIFFERENT WAYS TO VIEW METADATA RECORDS -# detailed_citation_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) : -# see metadata viewing notes below -# summary_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) : -# see metadata viewing notes below -# fielded_format_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) : -# see metadata viewing notes below -# xml_sgml_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) : -# see metadata viewing notes below -# ___________________________________________________________________________ -# | * 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 -# filled(field) : determines whether a given field has been filled +# http://www.lon-capa.org/ # +# 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 Scott Harrison # -# === ERROR FUNCTIONS -# output_blank_field_error(server reference) : outputs a message saying that -# more fields need to be filled in -# output_date_error(server reference, error message) : outputs -# an error message specific to bad date format. +### + +############################################################################### +## ## +## 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 ## +## ## +############################################################################### package Apache::lonsearchcat; @@ -110,6 +53,7 @@ use Apache::lonnet(); use Apache::File(); use CGI qw(:standard); use Text::Query; +use GDBM_File; # ---------------------------------------- variables used throughout the module @@ -127,8 +71,8 @@ my $importbutton; # button to take the s # -- miscellaneous variables my $scrout; # string that holds portions of the screen output -my $fnum; # search result counter my $yourself; # allows for quickly limiting to oneself +my %hash; # ------------------------------------------ choices for different output views # Detailed Citation View ---> sub detailed_citation_view @@ -159,52 +103,71 @@ sub BEGIN { { my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}. '/language.tab'); - map { + while (<$fh>) { $_=~/(\w+)\s+([\w\s\-]+)/; chomp; $language{$1}=$2; - } <$fh>; + } } $cprtag{'any'}='Any copyright/distribution'; { my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonIncludes'}. '/copyright.tab'); - map { + while (<$fh>) { $_=~/(\w+)\s+([\w\s\-]+)/; chomp; $cprtag{$1}=$2; - } <$fh>; + } } $mimetag{'any'}='Any type'; { my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}. '/filetypes.tab'); - map { + while (<$fh>) { $_=~/(\w+)\s+(\w+)\s+([\w\s\-]+)/; chomp; $mimetag{$1}=".$1 $3"; - } <$fh>; + } } { my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}. '/hosts.tab'); - map { + while (<$fh>) { $_=~/(\w+?)\:(\w+?)\:(\w+?)\:(.*)/; chomp; if ($3 eq 'library') { $hostdomains{$1}=$2; $hostips{$1}=$4; } - } <$fh>; + } } } +my $diropendb = ""; +my $domain = ""; + # ----------------------------- Handling routine called via Apache and mod_perl sub handler { my $r = shift; - + untie %hash; &get_unprocessed_cgi(); $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\_$ENV{'user.name'}_searchcat.db"; + + if ($ENV{'form.launch'} eq '1') { + if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) { + &start_fresh_session(); + untie %hash; + } + else { + $r->print('
Unable to tie hash to db '. + 'file'); + return OK; + } + } + # ----------------------------------- configure dynamic components of interface my $hidden=''; if ($ENV{'form.catalogmode'} eq 'interactive') { @@ -236,10 +199,10 @@ END # ----------------------------------- See if a search invocation should be done if ($ENV{'form.basicsubmit'} eq 'SEARCH') { - return &basicsearch($r,\%ENV); + untie %hash; return &basicsearch($r,\%ENV); } elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') { - return &advancedsearch($r,\%ENV); + untie %hash; return &advancedsearch($r,\%ENV); } # ----------------------------- Else, begin building search interface to output @@ -413,21 +376,21 @@ ENDDOCUMENT # ----------- grab unprocessed CGI variables that may have been appended to URL sub get_unprocessed_cgi { - map { + 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') { + if ($name eq 'catalogmode' or $name eq 'launch' or $name eq 'acts') { $ENV{'form.'.$name}=$value; } - } (split(/&/,$ENV{'QUERY_STRING'})); + } } # ------------------------------------------------------------- make persistent sub make_persistent { my $persistent=''; - map { + foreach (keys %ENV) { if (/^form\./ && !/submit/) { my $name=$_; my $key=$name; @@ -437,7 +400,7 @@ sub make_persistent { END } - } (keys %ENV); + } return $persistent; } @@ -617,11 +580,11 @@ sub selectbox { my $uctitle=uc($title); my $selout="\n$uctitle:".
"
".'';
}
@@ -641,7 +604,7 @@ sub advancedsearch {
'lastrevisiondateend_day','lastrevisiondateend_year',
'notes','abstract','mime','language','owner',
'custommetadata','customshow') {
- $ENV{"form.$field"}=~s/[^\w\s\(\)\=\-\"\']//g;
+ $ENV{"form.$field"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
}
# Check to see if enough information was filled in
@@ -891,11 +854,12 @@ sub build_date_queries {
# 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=30;
+ my $timeremain=300;
my $elapsetime=0;
my $resultflag=0;
my $tflag=1;
@@ -934,10 +898,10 @@ SCRIPT
$r->print(<
SCRIPT
@@ -959,6 +924,11 @@ SCRIPT
'scrollbars=1,width=400,height=300');
openhelpwin.focus();
}
+ function abortsearch(val) {
+ openhelpwin=open('/adm/help/searchcat.html','helpscreen',
+ 'scrollbars=1,width=400,height=300');
+ openhelpwin.focus();
+ }
SCRIPT
$r->rflush();
@@ -1067,7 +1037,7 @@ RESULTS
'<'+'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>'+
@@ -1079,10 +1049,16 @@ ENDPOP
$r->rflush();
my $servercount=0;
- $sn=0;
my $hitcountsum=0;
- foreach my $rkey (sort keys %rhash) {
+ 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='';
@@ -1098,6 +1074,8 @@ ENDPOP
'src="/adm/lonIcons/srvbad.gif";'.
"\n");
$r->rflush();
+ $bloop--;
+ $orkey{$rkey}=1;
}
else {
$reply=~/^([\.\w]+)$/; # must do since 'use strict' checks for tainting
@@ -1119,8 +1097,9 @@ ENDPOP
$r->rflush();
$tflag=0;
}
- last WLOOP if $temp>5;
if (-e "$replyfile.end") {
+ $bloop--;
+ $orkey{$rkey}=1;
if (-s $replyfile) {
$r->print('