--- trunk/index_DBI_cache.pm	2003/07/13 21:54:22	95
+++ trunk2/lib/WebPac/Index.pm	2004/06/13 20:20:29	348
@@ -6,10 +6,13 @@
 # library). But, that functionality is not used anyway...
 #
 
-package index_DBI;
+package WebPac::Index;
 use strict qw(vars);
 use vars qw($Count);
 use HTML::Entities;
+use URI::Escape;
+use locale;
+use Carp;
 
 use DBI;
 
@@ -34,18 +37,25 @@
 
 sub new {
 	my $class = shift;
-	my $self = {};
+	my $self = {@_};
 	bless($self, $class);
 
-	my $dbd = shift || die "need dbi_dbd= in [global] section of configuration file";
-	my $dsn = shift || die "need dbi_dsn= in [global] section of configuration file";
-	my $user = shift || die "need dbi_user= in [global] section of configuration file";
-	my $passwd = shift || die "need dbi_passwd= in [global] section of configuration file";
+	croak "need dbd" if (! $self->{dbd});
+	croak "need dsn" if (! $self->{dsn});
+	croak "need user" if (! $self->{user});
+	croak "need passwd" if (! $self->{passwd});
 
-	$self->{dbh} = DBI->connect("DBI:$dbd:$dsn",$user,$passwd) || die $DBI::errstr;
+	$self->{dbh} = DBI->connect("DBI:$self->{dbd}:$self->{dsn}",$self->{user},$self->{passwd}) || die $DBI::errstr;
 	$Count++;
 
-	$self->bench("connected to $dbd as $user");
+	$self->bench("connected to $self->{dbd} as $self->{user}");
+
+	# force SQLite to support binary 0 in data (which shouldn't
+	# happend, but it did to me)
+	eval {
+		no warnings 'all';
+		$self->{dbh}->{sqlite_handle_binary_nulls} = 1;
+	};
 
 	return $self;
 }
@@ -62,10 +72,11 @@
 # FIX: this is not a good way to check if table exists!
 	if ($sth->execute() && $sth->fetchrow_hashref) {
 		my $sql = "drop table $field";
-		my $sth = $self->{dbh}->do($sql) || die "SQL: $sql ".$self->{dbh}->errstr();
+		my $sth = $self->{dbh}->do($sql) || warn "SQL: $sql - ".$sth->errstr();
 	}
 	$sql = "create table $field (
 			item varchar(255),
+			display text,
 			count int,
 			ord int,
 			primary key (item)
@@ -79,7 +90,7 @@
 
 	my $field = shift;
 	my $index_data = shift || print STDERR "\$index->insert($field,NULL,...)";
-	my $ident = shift || '';	# e.g. library id
+	my $display = shift || $index_data;
 
 	if (! $index_data) {
 		print STDERR "\$index->insert() -- no value to insert\n";
@@ -101,25 +112,37 @@
 	if (! $c_table->{$field}->{$uc}) {
 #print stderr "in index: $index_data\n";
 		$c_table->{$field}->{$uc} = $index_data;
+		$c_table->{$field}->{$uc}->{display} = $display;
 		$c_count->{$field}->{$uc} = 1;
 	} else {
 		$c_count->{$field}->{$uc}++;
 	}
 }
 
-sub check {
+sub count {
 	my $self = shift;
 
 	my $field = shift;
+	my $where = shift;
 
-	my $sql = "select count(*) from $field";
+	my $sql = "select count(*) from $field where upper(item) like upper(?)||'%'";
 
 	my $sth = $self->{dbh}->prepare($sql) || die $self->{dbh}->errstr();
-	$sth->execute() || die "sql: $sql; ".$self->{dbh}->errstr();
+	$sth->execute($where) || die "sql: $sql; ".$self->{dbh}->errstr();
 
 	my ($total) = $sth->fetchrow_array();
 
-	return $total;
+	# no results, count all
+	if (! $total) {
+		my $sql = "select count(*) from $field";
+
+		my $sth = $self->{dbh}->prepare($sql) || die $self->{dbh}->errstr();
+		$sth->execute() || die "sql: $sql; ".$self->{dbh}->errstr();
+		$total = $sth->fetchrow_array();
+
+	}
+
+	return $total || 1;
 }
 
 
@@ -127,7 +150,6 @@
 	my $self = shift;
 
 	my $field = shift;
-	my $what = shift || 'item';	# 'item,ident'
 	my $where = shift;
 
 	my $from_ord = shift || 0;
@@ -135,15 +157,24 @@
 
 	my @sql_args;
 
-	my $sql = "select $what,ord from $field";
+	my $sql = "select item,display,ord from $field";
 
 	if ($where) {
-		my $sql2 = " select ord from $field where upper($what) like upper(?)||'%'";
+		my $sql2 = "select ord from $field where upper(item) like upper(?)||'%'";
 		my $sth = $self->{dbh}->prepare($sql2) || die "sql2: $sql2; ".$self->{dbh}->errstr();
 
 		$sth->execute($where) || die "sql2: $sql2; ".$self->{dbh}->errstr();
 		if (my $row = $sth->fetchrow_hashref) {
 			$from_ord += $row->{ord} - 1;
+		} else {
+			# if no match is found when searching from beginning
+			# of word in index, try substring match anywhere
+			$sql2 = "select ord from $field where upper(item) like '% '||upper(?)||'%'";
+			$sth = $self->{dbh}->prepare($sql2) || die "sql2: $sql2; ".$self->{dbh}->errstr();
+			$sth->execute($where) || die "sql2: $sql2; ".$self->{dbh}->errstr();
+			if (my $row = $sth->fetchrow_hashref) {
+				$from_ord += $row->{ord} - 1;
+			}
 		}
 	}
 	$sql .= " order by ord limit $rows offset $from_ord";
@@ -152,7 +183,8 @@
 	$sth->execute() || die "execute: $sql; ".$self->{dbh}->errstr();
 	my @arr;
 	while (my $row = $sth->fetchrow_hashref) {
-		$row->{item} = HTML::Entities::encode($row->{item},'<>&"');
+		$row->{item} = HTML::Entities::encode($row->{item},' <>&"');
+		$row->{display} = HTML::Entities::encode($row->{display},'<>&"');
 		push @arr,$row;
 	}
 	return @arr;
@@ -169,23 +201,29 @@
 
 		$self->{dbh}->begin_work || die $self->{dbh}->errstr();
 
-		$self->bench("Sorting ".$Table{$table}." items in $table");
+		$self->bench("Sorting ".$Table{$table}." (with duplicates) items in $table");
 		my @keys = sort keys %{$c_table->{$table}};
 
-		$self->bench("Dumping data into $table");
-		my $sql = "insert into $table (ord,item,count) values (?,?,?)";
+		$self->bench("Dumping ".($#keys+1)." items into $table");
+		my $sql = "insert into $table (ord,item,display,count) values (?,?,?,?)";
 		my $sth = $self->{dbh}->prepare($sql) || die "sql: $sql; ".$self->{dbh}->errstr();
 
 		my $ord = 0;
 		foreach my $key (@keys) {
 			$sth->execute(++$ord,
 				$c_table->{$table}->{$key},
+				$c_table->{$table}->{$key}->{display},
 				$c_count->{$table}->{$key}
 			);
 		}
 
 		$self->{dbh}->commit || die $self->{dbh}->errstr();
 	}
+
+	if ($self->{dbd} =~ m/(Pg|SQLite)/) {
+		$self->{dbh}->do(qq{vacuum}) || warn "vacumming failed. It shouldn't if you are using PostgreSQL or SQLite: ".$self->{dbh}->errstr();
+	}
+
 	$self->bench("disconnecting from database");
 
 	$self->{dbh}->disconnect;