Gnizr implements a policy-driven user registration function. Depending on the configuration, system administrators can choose to implement one of the following user registration policy:

1. Open Policy: allow any one with a valid email address to create and activate new user accounts.
2. Approval Policy: allow any one to create new accounts, but their activation requires the explicit approval from the administrator.
3. Close Policy: prohibit any one to create new account, and only the administrator can create and activate new user accounts.

Configuration

To set the user registration policy, system administrators should edit the registrationPolicy property in gnizr-config.xml.

Valid values for registrationPolicy:

• open -- for Open Policy
• close -- for Close Policy
• approval -- for Approval Policy

If this property is not defined, the default value is open.

Design

The design for Close Policy implementation is as follows. If the user registration policy is close, then any one who attempts to invoke the user registration pages will receive a notice message, which says the user registration function is closed.

For open and approval policy implementation, the business logic is depicted in the following UML diagrams: