| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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 |
| * |
| * 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.apache.commons.weaver.privilizer; |
| |
| import java.security.PrivilegedAction; |
| import java.util.Locale; |
| |
| import org.apache.commons.lang3.StringUtils; |
| |
| /** |
| * Weaving policy: when to use {@link PrivilegedAction}s. |
| */ |
| public enum Policy { |
| /** |
| * Disables weaving. |
| */ |
| NEVER, |
| |
| /** |
| * Weaves such that the check for an active {@link SecurityManager} is done once only. |
| */ |
| ON_INIT, |
| |
| /** |
| * Weaves such that the check for an active {@link SecurityManager} is done for each {@link Privileged} method |
| * execution. |
| */ |
| DYNAMIC, |
| |
| /** |
| * Weaves such that {@link Privileged} methods are always executed as such. |
| */ |
| ALWAYS; |
| |
| /** |
| * Get the {@link Policy} value that should be used as a default. |
| * @return {@link Policy#DYNAMIC} |
| */ |
| public static Policy defaultValue() { |
| return DYNAMIC; |
| } |
| |
| /** |
| * Parse from a {@link String} returning {@link #defaultValue()} for blank/null input. |
| * @param str to parse |
| * @return {@link Policy} |
| */ |
| public static Policy parse(final String str) { |
| if (StringUtils.isBlank(str)) { |
| return defaultValue(); |
| } |
| return valueOf(str.trim().toUpperCase(Locale.US)); |
| } |
| |
| /** |
| * Learn whether this is a conditional {@link Policy}. |
| * @return {@code this == ON_INIT || this == DYNAMIC} |
| */ |
| public boolean isConditional() { |
| return this == ON_INIT || this == DYNAMIC; |
| } |
| } |