ldap with bonita 6 coomunity

My company needs me to make decision about which workflow should we go with . Actually i prefer to use Bonita community edition but there is still something confuse me about ldab integration with our server i know that ldap synchronizer comes with subscription edition .Is it possiable to build my ldab connection classes with community edition ? and if yes ..how easy is it going to be ?

and please if any one did it before answer me or provide me with an example ..

regards