/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the License at the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apereo.portal.security;

import org.apereo.portal.AuthorizationException;

/**
 * An interface for retrieving <code>IAuthorizationPrincipals</code> and their <code>Permissions
 * </code> on behalf of a <code>Permission</code> owner.
 *
 */
public interface IPermissionManager {

    /**
     * Returns <code>IAuthorizationPrincipals</code> granted <code>Permissions</code> by the owner
     * of this <code>IPermissionManager</code>, for the given <code>activity</code> and <code>target
     * </code>. If either parameter is null, it is ignored.
     *
     * @return IAuthorizationPrincipal[]
     * @param activity String - the Permission activity
     * @param target String - the Permission target
     */
    public IAuthorizationPrincipal[] getAuthorizedPrincipals(String activity, String target)
            throws AuthorizationException;
    /** @return java.lang.String */
    public String getOwner();

    /** Obtains all permissions records with the specified target. */
    IPermission[] getPermissionsForTarget(String target);

    /**
     * Retrieve an array of IPermission objects based on the given parameters. Any null parameters
     * will be ignored.
     *
     * @param activity String
     * @param target String
     * @return Permission[]
     * @exception AuthorizationException
     */
    public IPermission[] getPermissions(String activity, String target)
            throws AuthorizationException;
}