From 02d7b71479372f95b0d00d146b55ae7481241ae5 Mon Sep 17 00:00:00 2001
From: Dobrica Pavlinusic <dpavlin@rot13.org>
Date: Wed, 22 Jan 2003 20:24:32 +0000
Subject: [PATCH] display index (without pager for now)

git-svn-id: file:///home/dpavlin/private/svn/webpac/trunk@11 13eb9ef6-21d5-0310-b721-a9d68796d827
---
 WebPac.pm                   | 24 +++++++++++++++-
 index_DBI.pm                | 57 ++++++++++++++++++++++++++++++-------
 template_html/no_index.html |  2 ++
 3 files changed, 71 insertions(+), 12 deletions(-)
 create mode 100644 template_html/no_index.html

diff --git a/WebPac.pm b/WebPac.pm
index 23ab460..946fab1 100644
--- a/WebPac.pm
+++ b/WebPac.pm
@@ -9,6 +9,9 @@ use SWISH;
 use Unicode::MapUTF8 qw(to_utf8 from_utf8 utf8_supported_charset);
 use DBI;
 
+use lib '..';
+use index_DBI;
+
 # configuration options
 # FIX: they really should go in configuration file!
 my $TEMPLATE_PATH = '/data/webpac/template_html';
@@ -165,10 +168,29 @@ sub show_index {
 
 	my $q = $self->query();
 
+	my $field = $q->param("f$i");
+	my $limit = $q->param("v$i");
+
+
 	my $html;
 
-	$html .= "show index of ".$q->param("f$i")." for ".$q->param("v$i");
+	my $index = new index_DBI();
+
+	if (! $index->check($field)) {
+		my $tmpl = $self->load_tmpl('no_index.html');
+		$tmpl->param('field',$field);
+		$html = $tmpl->output;
+		return $html;
+	}
+
+	my @index_arr = $index->fetch($field,'item',$limit);
 
+	$html .= "show index of <i>$field</i>";
+	$html .= " for <i>$limit</i>" if ($limit);
+
+	while (my $row = shift @index_arr) {
+		$html .= "<br>".$row->{item}."\n";
+	}
 
 	return $html;
 }
diff --git a/index_DBI.pm b/index_DBI.pm
index d24f130..9b09394 100644
--- a/index_DBI.pm
+++ b/index_DBI.pm
@@ -16,7 +16,7 @@ sub new {
 	bless($self, $class);
 
 	# FIX: config params
-	$self->{dbh} = DBI->connect("DBI:Pg:dbname=webpac","","") || die $DBI::errstr;
+	$self->{dbh} = DBI->connect("DBI:Pg:dbname=webpac","dpavlin","") || die $DBI::errstr;
 	# begin transaction
 	$self->{dbh}->begin_work || die $self->{dbh}->errstr();
 
@@ -58,7 +58,7 @@ sub insert {
 
 	my $field = shift;
 	my $index_data = shift;
-	my $ident = shift;	# e.g. Library ID
+	my $ident = shift;	# e.g. library id
 
 	if (! $index_data) {
 		print STDERR "\$index->insert() -- no value to insert\n";
@@ -72,19 +72,54 @@ sub insert {
 
 	my $sql = "select item from $field where upper(item)=upper(?)";
 	my $sth = $self->{dbh}->prepare($sql) || die $self->{dbh}->errstr();
-	$sth->execute($index_data) || die "SQL: $sql; ".$self->{dbh}->errstr();
+	$sth->execute($index_data) || die "sql: $sql; ".$self->{dbh}->errstr();
 	if (! $sth->fetchrow_hashref) {
 		my $sql = "insert into $field (item,ident,count) values (?,?,?)";
 		my $sth = $self->{dbh}->prepare($sql) || die $self->{dbh}->errstr();
-		$sth->execute($index_data,$ident,1) || die "SQL: $sql; ".$self->{dbh}->errstr();
-#print STDERR "in index: $index_data\n";
+		$sth->execute($index_data,$ident,1) || die "sql: $sql; ".$self->{dbh}->errstr();
+#print stderr "in index: $index_data\n";
 	} else {
 		my $sql = "update $field set count = count + 1 where item = ? and ident = ?";
 		my $sth = $self->{dbh}->prepare($sql) || die $self->{dbh}->errstr();
-		$sth->execute($index_data,$ident) || die "SQL: $sql; ".$self->{dbh}->errstr();
+		$sth->execute($index_data,$ident) || die "sql: $sql; ".$self->{dbh}->errstr();
 	}
 }
 
+sub check {
+	my $self = shift;
+
+	my $field = shift;
+
+	my $sql = "select count(*) from $field";
+	return $self->{dbh}->do($sql);
+}
+
+
+sub fetch {
+	my $self = shift;
+
+	my $field = shift;
+	my $what = shift || 'item';	# 'item,ident'
+	my $where = shift;
+
+	my @sql_args;
+
+	my $sql = "select $what from $field";
+	if ($where) {
+		$sql .= " where upper(item) like upper(?)||'%'";
+		push @sql_args,$where;
+	}
+	$sql .= " order by item";
+
+	my $sth = $self->{dbh}->prepare($sql) || die "sql: $sql; ".$self->{dbh}->errstr();
+	$sth->execute(@sql_args) || die "sql: $sql; ".$self->{dbh}->errstr();
+	my @arr;
+	while (my $row = $sth->fetchrow_hashref) {
+		push @arr,$row;
+	}
+	return @arr;
+}
+
 sub close {
 	my $self = shift;
 
@@ -97,12 +132,12 @@ sub close {
 
 END {
 	$Count--;
-	print STDERR "index_DBI fatal error: \$index->close() not called... $Count references left!\n" if ($Count != 0);
+	print STDERR "index_DBI fatal error: \$index->close() not called... $Count references left!\n" if ($Count > 0);
 	# FIX: debug output
-	print STDERR "usage\ttable\n";
-	foreach (keys %Table) {
-		print STDERR $Table{$_},"\t$_\n";
-	}
+#	print STDERR "usage\ttable\n";
+#	foreach (keys %Table) {
+#		print STDERR $Table{$_},"\t$_\n";
+#	}
 }
 
 1;
diff --git a/template_html/no_index.html b/template_html/no_index.html
new file mode 100644
index 0000000..59bf27f
--- /dev/null
+++ b/template_html/no_index.html
@@ -0,0 +1,2 @@
+There is currently no index for <i><TMPL_VAR field></i> field in this WebPac.
+<p>Please contact administrative person and ask him/her to fix it.
-- 
2.20.1