Factory Examples

• "Give me a lock implementation"

my $locker = File::Locker->new($file)
$locker->lock_for_write();

• Looks at OS?
• File::Locker::Unix, File::Locker::Win32
• Looks at file type?
• File::Locker::Standard, File::Locker::BerkeleyDB
• Don't care how lock_for_write() is implemented