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