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package org.glassfish.deployment.common;

import org.glassfish.deployment.common.RootDeploymentDescriptor;
import org.glassfish.security.common.Role;

import java.security.Principal;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Map;

/**
 * This interface defines the protocol used by the DOL to access the role
 * mapping information of a J2EE application. This class is implemented by
 * other modules and their instanciation is done through the 
 * SecurityRoleMapperFactory class.
 *
 * @author Jerome Dochez
 */
public interface SecurityRoleMapper {
    
    /**
     * Set the role mapper application name
     * @param the app name
     */ 
    public void setName(String name);
    
    /**
     * @return the role mapper application name
     */ 
    public String getName();    
    
    /**
     * @return an iterator on all the assigned roles
     */
    public Iterator getRoles();
    
    /**
     * @rturns an enumeration of Principals assigned to the given role
     * @param The Role to which the principals are assigned to.
     */
    public Enumeration getUsersAssignedTo(Role r);
    
    
    /**
     * Returns an enumeration of Groups assigned to the given role
     * @param The Role to which the groups are assigned to.
     */
    public Enumeration getGroupsAssignedTo(Role r);
    
    /**
     * Assigns a Principal to the specified role.
     *
     * @param p The principal that needs to be assigned to the role.
     * @param r The Role the principal is being assigned to.
     * @param rdd The descriptor of the module calling assignRole.
     */
    public void assignRole(Principal p, Role r, RootDeploymentDescriptor rdd);
    
    /**
     * Remove the given role-principal mapping
     * @param role, Role object
     * @param principal, the principal
     */    
    public void unassignPrincipalFromRole(Role role, Principal principal);
    
    /**
     *  Remove all the role mapping information for this role
     * @param role, the role object
     */
    public void unassignRole(Role role);
    /*
     * @Map a map of roles to the corresponding subjects
     */
    public Map getRoleToSubjectMapping();
}