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package Apache::Session::Browseable::DBI;
use strict;
use DBI;
use Apache::Session;
use Apache::Session::Browseable::_common;
our $VERSION = '1.2.7';
our @ISA = qw(Apache::Session Apache::Session::Browseable::_common);
sub searchOn {
my $class = shift;
my ( $args, $selectField, $value, @fields ) = @_;
# Escape quotes
$selectField =~ s/'/''/g;
if ( $class->_fieldIsIndexed( $args, $selectField ) ) {
return $class->_query( $args, $selectField, $value,
{ query => "$selectField=?", values => [$value] }, @fields );
}
else {
return $class->SUPER::searchOn(@_);
}
}
sub searchOnExpr {
my $class = shift;
my ( $args, $selectField, $value, @fields ) = @_;
# Escape quotes
$value =~ s/'/''/g;
$selectField =~ s/'/''/g;
if ( $class->_fieldIsIndexed( $args, $selectField ) ) {
$value =~ s/\*/%/g;
return $class->_query( $args, $selectField, $value,
{ query => "$selectField like ?", values => [$value] }, @fields );
}
else {
return $class->SUPER::searchOnExpr(@_);
}
}
sub _query {
my ( $class, $args, $selectField, $value, $query, @fields ) = @_;
my %res = ();
my $index =
ref( $args->{Index} )
? $args->{Index}
: [ split /\s+/, $args->{Index} ];
my $dbh = $class->_classDbh($args);
my $table_name = $args->{TableName}
|| $Apache::Session::Store::DBI::TableName;
# Case 1: all requested fields are also indexed
my $indexed = $class->_tabInTab( \@fields, $index );
my $sth;
if ($indexed) {
my $fields = join( ',', 'id', map { s/'//g; $_ } @fields );
$sth = $dbh->prepare(
"SELECT $fields from $table_name where $query->{query}");
$sth->execute( @{ $query->{values} } );
return $sth->fetchall_hashref('id');
}
# Case 1: at least one field isn't indexed, decoding is needed
else {
$sth =
$dbh->prepare(
"SELECT id,a_session from $table_name where $query->{query}");
$sth->execute( @{ $query->{values} } );
while ( my @row = $sth->fetchrow_array ) {
no strict 'refs';
my $self = eval "&${class}::populate();";
my $sub = $self->{unserialize};
my $tmp = &$sub( { serialized => $row[1] } );
if (@fields) {
$res{ $row[0] }->{$_} = $tmp->{$_} foreach (@fields);
}
else {
$res{ $row[0] } = $tmp;
}
}
}
return \%res;
}
sub deleteIfLowerThan {
my ( $class, $args, $rule ) = @_;
my ( $query, %fields );
my $index =
ref( $args->{Index} )
? $args->{Index}
: [ split /\s+/, $args->{Index} ];
if ( $rule->{or} ) {
$query = join ' OR ',
map { $fields{$_}++; "cast($_ as integer) < $rule->{or}->{$_}" }
keys %{ $rule->{or} };
}
elsif ( $rule->{and} ) {
$query = join ' AND ',
map { $fields{$_}++; "cast($_ as integer) < $rule->{or}->{$_}" }
keys %{ $rule->{or} };
}
if ( $rule->{not} ) {
$query = "($query) AND "
. join( ' AND ',
map { $fields{$_}++; "$_ <> '$rule->{not}->{$_}'" }
keys %{ $rule->{not} } );
}
return 0
unless ( $query and $class->_tabInTab( [ keys %fields ], $index ) );
my $dbh = $class->_classDbh($args);
my $table_name = $args->{TableName}
|| $Apache::Session::Store::DBI::TableName;
my $sth = $dbh->do("DELETE FROM $table_name WHERE $query");
return 1;
}
sub get_key_from_all_sessions {
my $class = shift;
my $args = shift;
my $data = shift;
my $table_name = $args->{TableName}
|| $Apache::Session::Store::DBI::TableName;
my $dbh = $class->_classDbh($args);
# Special case if all wanted fields are indexed
if ( $data and ref($data) ne 'CODE' ) {
$data = [$data] unless ( ref($data) );
my $index =
ref( $args->{Index} )
? $args->{Index}
: [ split /\s+/, $args->{Index} ];
# Test if one field isn't indexed
my $indexed = $class->_tabInTab( $data, $index );
# OK, all fields are indexed
if ($indexed) {
my $sth =
$dbh->prepare_cached( 'SELECT id,'
. join( ',', map { s/'/''/g; $_ } @$data )
. " from $table_name" );
$sth->execute;
return $sth->fetchall_hashref('id');
}
}
my $sth = $dbh->prepare_cached("SELECT id,a_session from $table_name");
$sth->execute;
my %res;
my $next = (
$args->{DataSource} =~ /^sybase/i
? sub {
require Storable;
return Storable::thaw( pack( 'H*', $_[0] ) );
}
: $args->{DataSource} =~ /^mysql/i ? sub {
require MIME::Base64;
require Storable;
return Storable::thaw( MIME::Base64::decode_base64( $_[0] ) );
}
: undef
);
while ( my @row = $sth->fetchrow_array ) {
no strict 'refs';
my $self = eval "&${class}::populate();";
my $sub = $self->{unserialize};
my $tmp = &$sub( { serialized => $row[1] }, $next );
if ( ref($data) eq 'CODE' ) {
$tmp = &$data( $tmp, $row[0] );
$res{ $row[0] } = $tmp if ( defined($tmp) );
}
elsif ($data) {
$data = [$data] unless ( ref($data) );
$res{ $row[0] }->{$_} = $tmp->{$_} foreach (@$data);
}
else {
$res{ $row[0] } = $tmp;
}
}
return \%res;
}
sub _classDbh {
my $class = shift;
my $args = shift;
my $datasource = $args->{DataSource} or die "No datasource given !";
my $username = $args->{UserName};
my $password = $args->{Password};
my $dbh =
DBI->connect_cached( $datasource, $username, $password,
{ RaiseError => 1, AutoCommit => 1 } )
|| die $DBI::errstr;
if ( $datasource =~ /^dbi:sqlite/i ) {
$dbh->{sqlite_unicode} = 1;
}
elsif ( $datasource =~ /^dbi:mysql/i ) {
$dbh->{mysql_enable_utf8} = 1;
}
elsif ( $datasource =~ /^dbi:pg/i ) {
$dbh->{pg_enable_utf8} = 1;
}
return $dbh;
}
1;
|
