PermissionManager Overview

The PermissionManager is used by the RdbmsPolicy to get the permissions for a given user principals as presented in the Jetspeed JAAS Policy section of the documentation.

The PermissionManager manages the association between permissions and principals. Each permission or principal maps to a generic object model and reflexion is used to instantiate the proper permission or principal type. The class diagram below represents the interfaces representing a generic permission (InternalPermission) and a generic principal (InternalPrincipal) and their relation to the PermissionManager.

Each InternalPermission maps to one or more InternalPrincipal and, each InternalPrincipal can have one or more InternalPermission.

Schema and OJB Mapping

The OJB mappings for the security component are described in security_repository.xml:

• InternalPrincipal: Maps to the SECURITY_PRINCIPAL table.
• InternalPermission: Maps to the SECURITY_PERMISSION table.
• Associations between InternalPrincipal and InternalPermission are maintained through the indirection table PRINCIPAL_PERMISSION.

<class-descriptor
	    class="org.apache.jetspeed.security.om.impl.InternalPrincipalImpl"
	    proxy="dynamic"
	    table="SECURITY_PRINCIPAL"
	>...</class-descriptor>
	
<class-descriptor
	    class="org.apache.jetspeed.security.om.impl.InternalPermissionImpl"
	    proxy="dynamic"
	    table="SECURITY_PERMISSION"
	>...</class-descriptor>      
            
            

The relational schema maintaining principal to permission associations is provided below: