Patent ID: 7761552

Claim:
A computer apparatus for integrating at least two or more services of user management domains which are user management units, comprising: a processor; a memory; and an interface, wherein the processor is configured to: receive an access request; specify a user management domain to which a request source of the received access request belongs as an access source domain; specify a user management domain to which an access target of the received access request belongs as an access target domain; judge whether the specified access source domain matches the specified access target domain; execute a process according to the received access request, in the case of which the access source domain matches the access target domain; extract a user ID of the specified access source domain from the received access request, in the case of which the access source domain is different from the access target domain; refer to ID conversion information indicating correspondence of user IDs between the user management domains whose services are integrated in order to convert the extracted user ID of the access source domain into a user ID of the specified access target domain; substitute the user ID included in the received access request with the converted user ID; and execute a process according to the user ID substituted access request, wherein: the ID conversion information further indicates correspondence of group IDs between the user management domains whose services are integrated; and the processor is further configured to: extract a group ID of the specified access source domain from the received access request, in the case of which the access source domain is different from the access target domain; refer to the ID conversion information to convert the extracted group ID of the access source domain into a group ID of the specified access target domain; substitute the group ID included in the received access request with the converted group ID; and execute a process according to the user ID and group ID substituted access request.