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lib/Apache/Session/Browseable/DBI.pm  view on Meta::CPAN

package Apache::Session::Browseable::DBI;

use strict;

use DBI;
use Apache::Session;
use Apache::Session::Browseable::_common;

our $VERSION = '1.3.9';
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};
            eval {
                my $tmp = &$sub( { serialized => $row[1] } );
                if (@fields) {
                    $res{ $row[0] }->{$_} = $tmp->{$_} foreach (@fields);
                }
                else {
                    $res{ $row[0] } = $tmp;
                }
            };
            if ($@) {
                print STDERR "Error in session $row[0]: $@\n";
                delete $res{ $row[0] };
            }
        }
    }
    return \%res;
}

sub deleteIfLowerThan {
    my ( $class, $args, $rule ) = @_;
    my ( $query, %fields );
    my $index =
      ref( $args->{Index} )
      ? $args->{Index}