001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.shiro.authz.permission;
020
021import org.apache.shiro.authz.Permission;
022
023import java.util.Collection;
024
025/**
026 * A RolePermissionResolver resolves a String value and converts it into a Collection of
027 * {@link org.apache.shiro.authz.Permission} instances.
028 * <p/>
029 * In some cases a {@link org.apache.shiro.realm.Realm} my only be able to return a list of roles.  This
030 * component allows an application to resolve the roles into permissions.
031 *
032 */
033public interface RolePermissionResolver {
034
035    /**
036     * Resolves a Collection of Permissions based on the given String representation.
037     *
038     * @param roleString the String representation of a role name to resolve.
039     * @return a Collection of Permissions based on the given String representation.
040     */
041    Collection<Permission> resolvePermissionsInRole(String roleString);
042
043}