--- /dev/null
+/*
+ * Copyright 2005-2010 the original author or authors.
+ *
+ * Licensed 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
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 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.wamblee.security.authorization;
+
+import org.wamblee.persistence.Persistent;
+
+import org.wamblee.usermgt.User;
+
+/**
+ * Represents an authorization rule to determine whether an operation is allowed
+ * on a resource.
+ *
+ * @author Erik Brakkee
+ */
+public interface AuthorizationRule extends Persistent {
+ /**
+ * Returns the supported object types for which this authorization rule
+ * applies. This can be used by the authorization service for optimization.
+ *
+ * @return Array of supported types.
+ */
+ Class[] getSupportedTypes();
+
+ /**
+ * Determines whether an operation is allowed on a certain resource. The
+ * rule implementation must be prepared to deal with resources for which it
+ * does not apply. In those cases it should return
+ * {@link AuthorizationResult#UNSUPPORTED_RESOURCE}.
+ *
+ * @param aResource
+ * Resource.
+ * @param aOperation
+ * Operation.
+ * @param aUser
+ * Current user.
+ *
+ * @return Authorization result.
+ */
+ AuthorizationResult isAllowed(Object aResource, Operation aOperation,
+ User aUser);
+}