2 * Copyright 2005-2010 the original author or authors.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.wamblee.security.authorization;
18 import org.wamblee.security.authentication.User;
21 * Represents an authorization rule to determine whether an operation is allowed
24 * @author Erik Brakkee
26 public interface AuthorizationRule {
29 * Returns the supported object types for which this authorization rule
30 * applies. This can be used by the authorization service for optimization.
32 * @return Array of supported types.
34 public abstract Class[] getSupportedTypes();
37 * Determines whether an operation is allowed on a certain resource. The
38 * rule implementation must be prepared to deal with resources for which it
39 * does not apply. In those cases it should return
40 * {@link AuthorizationResult#UNSUPPORTED_RESOURCE}.
49 * @return Authorization result.
51 public abstract AuthorizationResult isAllowed(Object aResource,
52 Operation aOperation, User aUser);