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.commons.weaver.privilizer.example;
020
021import java.util.ArrayList;
022
023import org.apache.commons.weaver.privilizer.Privileged;
024
025
026
027public abstract class StaticUsingArgs {
028
029    private StaticUsingArgs() {
030    }
031
032    @Privileged
033    static String getProperty(String name) {
034        return System.getProperty(name);
035    }
036
037    @Privileged
038    static String[] getProperties(String... names) {
039        if (names == null) {
040            return null;
041        }
042        final ArrayList<String> result = new ArrayList<String>();
043        // in reality one would delegate to #getProperty to minimize the scope
044        // of the privileged action
045        for (String name : names) {
046            result.add(System.getProperty(name));
047        }
048        return result.toArray(new String[result.size()]);
049    }
050
051    @Privileged
052    static void throwAwayProperty(int first, String middle, char last) {
053        System.getProperty(new StringBuilder().append((char) first).append(middle).append(last).toString());
054    }
055
056    @Privileged
057    static Object assembleAndGetProperty(char first, CharSequence middle, int last) {
058        return System.getProperty(new StringBuilder().append(first).append(middle).append((char) last).toString());
059    }
060
061    public static class CheckedException1 extends Exception {
062        private static final long serialVersionUID = 1L;
063    }
064
065    public static class CheckedException2 extends Exception {
066        private static final long serialVersionUID = 1L;
067    }
068
069    @Privileged
070    static int throwingCheckedException(int which, String propertyToGet) throws CheckedException1, CheckedException2 {
071        System.getProperty(propertyToGet);
072        switch (which) {
073        case 1:
074            throw new CheckedException1();
075        case 2:
076            throw new CheckedException2();
077        default:
078            return which;
079        }
080    }
081}