| /* |
| * 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.shiro.config.ogdl; |
| |
| import org.apache.commons.configuration2.interpol.ConfigurationInterpolator; |
| import org.apache.commons.configuration2.interpol.ConstantLookup; |
| import org.apache.commons.configuration2.interpol.EnvironmentLookup; |
| import org.apache.commons.configuration2.interpol.SystemPropertiesLookup; |
| |
| /** |
| * Commons-Config interpolation wrapper. This implementation uses a {@link ConfigurationInterpolator} with the default |
| * lookup: <code>sys</code> (system properties), <code>env</code> (environment variables>, and <code>const</code> (constants). |
| * |
| * <table> |
| * <tr> |
| * <th>lookup</th> |
| * <th>example</th> |
| * <th>value</th> |
| * </tr> |
| * <tr> |
| * <td>sys</td> |
| * <td>${os.name}</td> |
| * <td>mac os x</td> |
| * </tr> |
| * <tr> |
| * <td>env</td> |
| * <td>${EDITOR}</td> |
| * <td>vi</td> |
| * </tr> |
| * <tr> |
| * <td>const</td> |
| * <td>${const:java.awt.event.KeyEvent.VK_ENTER}</td> |
| * <td>\n</td> |
| * </tr> |
| * </table> |
| * |
| * @see ConfigurationInterpolator |
| * @since 1.4 |
| */ |
| public class CommonsInterpolator implements Interpolator { |
| |
| final private ConfigurationInterpolator interpolator; |
| |
| public CommonsInterpolator() { |
| this.interpolator = new ConfigurationInterpolator(); |
| |
| interpolator.registerLookup("const", new ConstantLookup()); |
| interpolator.addDefaultLookup(new SystemPropertiesLookup()); |
| interpolator.addDefaultLookup(new EnvironmentLookup()); |
| } |
| |
| @Override |
| public String interpolate(String value) { |
| return (String) interpolator.interpolate(value); |
| } |
| |
| public ConfigurationInterpolator getConfigurationInterpolator() { |
| return interpolator; |
| } |
| } |