--- loncom/interface/lonsearchcat.pm 2001/03/08 16:54:20 1.4 +++ loncom/interface/lonsearchcat.pm 2001/08/28 12:12:38 1.100 @@ -1,645 +1,408 @@ -# The LearningOnline Network +# 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 +# +# +# === 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 +# +# +# === 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 +# +# +# === 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. +# # +# === 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 +# +# +# === 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. + package Apache::lonsearchcat; +# ------------------------------------------------- modules used by this module use strict; use Apache::Constants qw(:common); +use Apache::lonnet(); +use Apache::File(); +use CGI qw(:standard); +use Text::Query; + +# ---------------------------------------- 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 + +# -- 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 $fnum; # search result counter +my $yourself; # allows for quickly limiting to oneself + +# ------------------------------------------ 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 +my $advancedviewselect=< + + + + + +END -my %language; -my $scrout; -my %metadatafields; -my %cprtag; -my %mimetag; - -sub handler { - my $r = shift; - $r->content_type('text/html'); - $r->send_http_header; - return OK if $r->header_only; - - %metadatafields=(); - -# ------------------------------------------------ First, check out environment - $metadatafields{'owner'}=$ENV{'user.name'}.'@'.$ENV{'user.domain'}; - - - %language=(); +# ----------------------------------------------------------------------- BEGIN +sub BEGIN { +# --------------------------------- Compute various listings of metadata values $language{'any'}='Any language'; { - my $fh=Apache::File->new($r->dir_config('lonTabDir').'/language.tab'); + my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}. + '/language.tab'); map { - $_=~/(\w+)\s+([\w\s\-]+)/; + $_=~/(\w+)\s+([\w\s\-]+)/; chomp; $language{$1}=$2; } <$fh>; } - - %cprtag=(); $cprtag{'any'}='Any copyright/distribution'; { - my $fh=Apache::File->new($r->dir_config('lonIncludes').'/copyright.tab'); + my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonIncludes'}. + '/copyright.tab'); map { - $_=~/(\w+)\s+([\w\s\-]+)/; + $_=~/(\w+)\s+([\w\s\-]+)/; chomp; $cprtag{$1}=$2; } <$fh>; } - - %mimetag=(); $mimetag{'any'}='Any type'; { - my $fh=Apache::File->new($r->dir_config('lonTabDir').'/filetypes.tab'); + my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}. + '/filetypes.tab'); map { - $_=~/(\w+)\s+(\w+)\s+([\w\s\-]+)/; + $_=~/(\w+)\s+(\w+)\s+([\w\s\-]+)/; chomp; $mimetag{$1}=".$1 $3"; } <$fh>; } + { + my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}. + '/hosts.tab'); + map { + $_=~/(\w+?)\:(\w+?)\:(\w+?)\:(.*)/; chomp; + if ($3 eq 'library') { + $hostdomains{$1}=$2; + $hostips{$1}=$4; + } + } <$fh>; + } +} + +# ----------------------------- Handling routine called via Apache and mod_perl +sub handler { + my $r = shift; + + &get_unprocessed_cgi(); + + $r->content_type('text/html'); + $r->send_http_header; + return OK if $r->header_only; + +# ----------------------------------- configure dynamic components of interface + my $hidden=''; + if ($ENV{'form.catalogmode'} eq 'interactive') { + $hidden="". + "\n"; + $closebutton=""."\n"; + } + elsif ($ENV{'form.catalogmode'} eq 'groupsearch') { + $hidden=< +END + $closebutton=< +END + $importbutton=< +END + } + +# ------------------------------------------------------ Determine current user + $yourself=$ENV{'user.name'}.'@'.$ENV{'user.domain'}; + +# --- Now, depending on the interface actions, do one of three things here: +# --- 1. a basic search +# --- 2. an advanced search +# --- 3. output a search interface + +# ----------------------------------- See if a search invocation should be done + if ($ENV{'form.basicsubmit'} eq 'SEARCH') { + return &basicsearch($r,\%ENV); + } + elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') { + return &advancedsearch($r,\%ENV); + } - $scrout=""; +# ----------------------------- Else, begin building search interface to output + $scrout=''; # building a part of screen output $scrout.=&searchphrasefield('Limit by title','title', - ''); + $ENV{'form.title'}); $scrout.=&searchphrasefield('Limit by author','author', - ''); + $ENV{'form.author'}); $scrout.=&searchphrasefield('Limit by subject','subject', - ''); + $ENV{'form.subject'}); + + $scrout.=&searchphrasefield('Limit by keywords','keywords', + $ENV{'form.keywords'}); + + $scrout.=&searchphrasefield('Limit by URL','url', + $ENV{'form.url'}); + +# $scrout.=&searchphrasefield('Limit by version','version', +# $ENV{'form.version'}); $scrout.=&searchphrasefield('Limit by notes','notes', - ''); + $ENV{'form.notes'}); $scrout.=&searchphrasefield('Limit by abstract','abstract', - ''); + $ENV{'form.abstract'}); + $ENV{'form.mime'}='notxxx' unless length($ENV{'form.mime'}); $scrout.=&selectbox('Limit by MIME type','mime', - 'notxxx',%mimetag); + $ENV{'form.mime'},%mimetag); + + $ENV{'form.language'}='any' unless length($ENV{'form.language'}); $scrout.=&selectbox('Limit by language','language', - 'any',%language); + $ENV{'form.language'},%language); - $scrout.=< LIMIT BY CREATION DATE RANGE: -
-between: - - -and: - - -

+
+between: +CREATIONDATESTART + $scrout.=&dateboxes('creationdatestart',1,1,1976, + $ENV{'form.creationdatestart_month'}, + $ENV{'form.creationdatestart_day'}, + $ENV{'form.creationdatestart_year'}, + ); + $scrout.=< LIMIT BY LAST REVISION DATE RANGE: -
between: - - -and: - - -

+
between: +LASTREVISIONDATESTART + $scrout.=&dateboxes('lastrevisiondatestart',1,1,1976, + $ENV{'form.lastrevisiondatestart_month'}, + $ENV{'form.lastrevisiondatestart_day'}, + $ENV{'form.lastrevisiondatestart_year'}, + ); + $scrout.=< +LIMIT BY SPECIAL METADATA FIELDS: + +For resource-specific metadata, enter in an expression in the form of +key=value separated by operators such as AND, OR or NOT.
+Example: grandmother=75 OR grandfather=85 +
+CUSTOMMETADATA +$scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'}); +$scrout.=' initial users of this system do not need to worry about this option'; + + $scrout.=< +SHOW SPECIAL METADATA FIELDS: + +Enter in a space-separated list of special metadata fields to show +in a fielded listing for each record result. +
+CUSTOMSHOW +$scrout.=&simpletextfield('customshow',$ENV{'form.customshow'}); +$scrout.=' initial users of this system do not need to worry about this option'; # ---------------------------------------------------------------- Print screen $r->print(< The LearningOnline Network with CAPA + +

Search Catalog

-
-
+$hidden +

Basic Search

Enter terms or phrases separated by search operators -such as AND or OR then press SEARCH below. Terms should be specific +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. -
- - -Title only -
- +
+ENDDOCUMENT + $r->print(&simpletextfield('basicexp',$ENV{'form.basicexp'})); + $r->print(' '); + $r->print(&simplecheckbox('titleonly',$ENV{'form.titleonly'})); + $r->print('Title only '); +# $r->print(&simplecheckbox('allversions',$ENV{'form.allversions'})); +# Search historic archives + $r->print(< + + +$closebutton +$basicviewselect +

-
+

Advanced Search

$scrout

- + + +$closebutton +$advancedviewselect +

@@ -648,38 +411,1077 @@ ENDDOCUMENT return OK; } +# ----------- grab unprocessed CGI variables that may have been appended to URL +sub get_unprocessed_cgi { + map { + 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') { + $ENV{'form.'.$name}=$value; + } + } (split(/&/,$ENV{'QUERY_STRING'})); +} + +# ------------------------------------------------------------- make persistent +sub make_persistent { + my $persistent=''; + + map { + if (/^form\./ && !/submit/) { + my $name=$_; + my $key=$name; + $ENV{$key}=~s/\'//g; # do not mess with html field syntax + $name=~s/^form\.//; + $persistent.=< +END + } + } (keys %ENV); + return $persistent; +} + # --------------------------------------------------------- Various form fields -sub textfield { - my ($title,$name,$value)=@_; - return "\n

$title:
". - ''; +sub simpletextfield { + my ($name,$value)=@_; + return ''; +} + +sub simplecheckbox { + my ($name,$value)=@_; + my $checked=''; + $checked="CHECKED" if $value eq 'on'; + return ''; } sub searchphrasefield { my ($title,$name,$value)=@_; my $instruction=<$uctitle:". - ": $instruction
". - ''; + " $instruction
". + ''; +} + +sub dateboxes { + my ($name,$defaultmonth,$defaultday,$defaultyear, + $currentmonth,$currentday,$currentyear)=@_; + ($defaultmonth,$defaultday,$defaultyear)=('','',''); + my $month=< + + + + + + + + + + + + + + +END + $month=~s/(\"$currentmonth\")/$1 SELECTED/ if length($currentmonth); + my $day=< + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +END + $day=~s/(\"$currentday\")/$1 SELECTED/ if length($currentday); + my $year=< + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +END + $year=~s/(\"$currentyear\")/$1 SELECTED/ if length($currentyear); + return "$month$day$year"; } sub selectbox { my ($title,$name,$value,%options)=@_; my $uctitle=uc($title); my $selout="\n

$uctitle:". - "
".''; map { - $selout.='

Search Catalog

+CATALOGBEGIN + $r->print(< + + +$importbutton +$closebutton +$persistent +
+

Search Query

+CATALOGCONTROLS + if ($mode eq 'Basic') { + $r->print(< +Basic search: $ENV{'form.basicexp'} +

+RESULTS + } + elsif ($mode eq 'Advanced') { + $r->print(< +Advanced search +$query +

+RESULTS + } + $r->print('

Search Results

'); + $r->rflush(); + my $servernum=(keys %rhash)+0; + + # define server grid (shows status of multiple machines) + my $hcinit; + my $grid="'
'+"; + $grid.="\n"; + my $sn=1; + for my $sk (sort keys %rhash) { + # ''+ + $grid.="'+\"'\"+')\">'+"; + $grid.="\n"; + $grid.="'\"".$sk."\"'+\n"; + $grid.="'
'+\n" unless $sn%10; + $sn++; + } + $r->print(< + popwin=open('','popwin','scrollbars=1,width=400,height=200'); + popwin.focus(); + popwin.document.writeln('<'+'html>'); + popwin.document.writeln('<'+'head>'); + popwin.document.writeln('<'+'script>'); + popwin.document.writeln('hc=new Array();$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"/>PLEASE BE PATIENT'+ + '<'+'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" '+ + ' />'+ + ' <'+'input type="button" name="button"'+ + ' value="help" onClick="javascript:opener.openhelp()" />'+ + '<'+'/tt>'+ + '<'+'/form>'+ + '<'+'/body><'+'/html>'); + popwin.document.close(); + +ENDPOP + $r->rflush(); + + my $servercount=0; + $sn=0; + my $hitcountsum=0; + foreach my $rkey (sort keys %rhash) { + $sn++; + $servercount++; + $tflag=1; + $compiledresult=''; + my $hostname=$rkey; + my $reply=$rhash{$rkey}; + my @results; + + my $replyfile=''; + + if ($reply eq 'con_lost') { + $r->print(''. + "\n"); + $r->rflush(); + } + 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(''. + "\n"); + $r->rflush(); + $r->print(''. + "\n"); + $r->rflush(); + $tflag=0; + } + last WLOOP if $temp>5; + if (-e "$replyfile.end") { + if (-s $replyfile) { + $r->print(''."\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(''. + "\n"); + $r->rflush(); + $hitcountsum+=$hitcount{$rkey}; + $r->print(''. + "\n"); + $r->rflush(); + } + else { + $r->print(''. + "\n"); + $r->rflush(); + $r->print(''. + "\n"); + $r->rflush(); + } + last WLOOP; + } + last WLOOP unless $timeremain; + sleep 1; + $timeremain--; + $elapsetime++; + $r->print(''."\n"); + $r->rflush(); + $temp++; + } + } + $r->print(''."\n"); + $r->rflush(); + } + my $customshow=''; + my $extrashow=''; + my @customfields; + if ($ENV{'form.customshow'}) { + $customshow=$ENV{'form.customshow'}; + $customshow=~s/[^\w\s]//g; + my @fields=map {"$_:"} + split(/\s+/,$customshow); + @customfields=split(/\s+/,$customshow); + if ($customshow) { + $extrashow="
  • ".join("
  • ",@fields)."
\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; + } + } + 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; + my $shortabstract=$abstract; + $shortabstract=substr($abstract,0,200) if length($abstract)>200; + $fields[7]=$shortabstract; + 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 + $compiledresult.=< +END + $compiledresult.=< + +
+END + $compiledresult.=< + + + +
+END + 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, + $extrashow2); + } + + } + + if ($compiledresult) { + $resultflag=1; + } + + $r->print(<print("\nThere were no results that matched your query\n"); + } +# $r->print(''."\n"); $r->rflush(); + $r->print(< + +RESULTS +} + +# ------------------------------------------------------ Detailed Citation View +sub detailed_citation_view { + my ($title,$author,$subject,$url,$keywords,$version, + $notes,$shortabstract,$mime,$lang, + $creationdate,$lastrevisiondate,$owner,$copyright, + $hostname,$httphost,$extrashow)=@_; + my $result=<$owner, last revised $lastrevisiondate +

$title

+

$author

+

+

+Subject: $subject
+Keyword(s): $keywords
+Notes: $notes
+MIME Type: $mimetag{$mime}
+Language: $language{$lang}
+Copyright/Distribution: $cprtag{$copyright}
+

+$extrashow +

+$shortabstract +

+END + return $result; +} + +# ---------------------------------------------------------------- Summary View +sub summary_view { + my ($title,$author,$subject,$url,$keywords,$version, + $notes,$shortabstract,$mime,$lang, + $creationdate,$lastrevisiondate,$owner,$copyright, + $hostname,$httphost,$extrashow)=@_; + my $result=<$author
+$title
+$owner -- $lastrevisiondate
+$cprtag{$copyright}
+$extrashow +

+END + return $result; +} + +# -------------------------------------------------------------- Fielded Format +sub fielded_format_view { + my ($title,$author,$subject,$url,$keywords,$version, + $notes,$shortabstract,$mime,$lang, + $creationdate,$lastrevisiondate,$owner,$copyright, + $hostname,$httphost,$extrashow)=@_; + my $result=<URL: $url +
+Title: $title
+Author(s): $author
+Subject: $subject
+Keyword(s): $keywords
+Notes: $notes
+MIME Type: $mimetag{$mime}
+Language: $language{$lang}
+Creation Date: $creationdate
+Last Revision Date: $lastrevisiondate
+Publisher/Owner: $owner
+Copyright/Distribution: $cprtag{$copyright}
+Repository Location: $hostname
+Abstract: $shortabstract
+$extrashow +

+END + return $result; +} + +# -------------------------------------------------------------------- XML/SGML +sub xml_sgml_view { + my ($title,$author,$subject,$url,$keywords,$version, + $notes,$shortabstract,$mime,$lang, + $creationdate,$lastrevisiondate,$owner,$copyright, + $hostname,$httphost,$extrashow)=@_; + my $result=< +<LonCapaResource> +<url>$url</url> +<title>$title</title> +<author>$author</author> +<subject>$subject</subject> +<keywords>$keywords</keywords> +<notes>$notes</notes> +<mimeInfo> +<mime>$mime</mime> +<mimetag>$mimetag{$mime}</mimetag> +</mimeInfo> +<languageInfo> +<language>$lang</language> +<languagetag>$language{$lang}</languagetag> +</languageInfo> +<creationdate>$creationdate</creationdate> +<lastrevisiondate>$lastrevisiondate</lastrevisiondate> +<owner>$owner</owner> +<copyrightInfo> +<copyright>$copyright</copyright> +<copyrighttag>$cprtag{$copyright}</copyrighttag> +</copyrightInfo> +<repositoryLocation>$hostname</repositoryLocation> +<shortabstract>$shortabstract</shortabstract> +</LonCapaResource> + +$extrashow +END + return $result; +} + +# ---------------------------------------------------- see if a field is filled +sub filled { + my ($field)=@_; + if ($field=~/\S/ && $field ne 'any') { + return 1; + } + else { + return 0; + } +} + +# ---------------- Message to output when there are not enough fields filled in +sub output_blank_field_error { + my ($r)=@_; + # make query information persistent to allow for subsequent revision + my $persistent=&make_persistent(); + + $r->print(< + +The LearningOnline Network with CAPA +BEGINNING + $r->print(< + + +

Search Catalog

+
+$persistent + +$closebutton +
+

Helpful Message

+

+Incorrect search query due to blank entry fields. +You need to fill in the relevant +fields on the search page in order for a query to be +processed. +

+ + +RESULTS +} + +# ----------------------------------------------------------- Output date error +sub output_date_error { + my ($r,$message)=@_; + # make query information persistent to allow for subsequent revision + my $persistent=&make_persistent(); + + $r->print(< + +The LearningOnline Network with CAPA +BEGINNING + $r->print(< + + +

Search Catalog

+ +$persistent + +$closebutton +
+

Helpful Message

+

+$message +

+ + +RESULTS +} + 1; + __END__