| 1 | // Copyright 2004-2007 Jean-Francois Poilpret |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package net.sourceforge.hiveutils.service.impl; |
| 16 | |
| 17 | import java.io.File; |
| 18 | import java.io.FileInputStream; |
| 19 | import java.io.IOException; |
| 20 | import java.io.InputStream; |
| 21 | import java.util.List; |
| 22 | import java.util.Properties; |
| 23 | |
| 24 | import org.apache.commons.logging.Log; |
| 25 | import org.apache.hivemind.SymbolSource; |
| 26 | import org.apache.hivemind.impl.BaseLocatable; |
| 27 | |
| 28 | /** |
| 29 | * Implementation of {@link org.apache.hivemind.SymbolSource} driven |
| 30 | * off of a property file. |
| 31 | * |
| 32 | * @author Jean-Francois Poilpret |
| 33 | */ |
| 34 | public class PropertyFileSymbolSource |
| 35 | extends BaseLocatable |
| 36 | implements SymbolSource |
| 37 | { |
| 38 | public PropertyFileSymbolSource(Log logger, List<PropertyFileContribution> parameters) |
| 39 | { |
| 40 | for (PropertyFileContribution contrib: parameters) |
| 41 | { |
| 42 | addProperties(logger, contrib.getFile(), contrib.getProperty()); |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | private void addProperties(Log logger, String path, String property) |
| 47 | { |
| 48 | String actualPath = path; |
| 49 | if (actualPath == null) |
| 50 | { |
| 51 | // Configuration does not define path but a system property where |
| 52 | // to find actual path |
| 53 | actualPath = System.getProperty(property); |
| 54 | } |
| 55 | Properties properties = new Properties(_allProperties); |
| 56 | try |
| 57 | { |
| 58 | File file = new File(actualPath); |
| 59 | if (!file.exists()) |
| 60 | { |
| 61 | logger.error("Problem reading property file [" + actualPath + "]"); |
| 62 | return; |
| 63 | } |
| 64 | InputStream input = new FileInputStream(file); |
| 65 | properties.load(input); |
| 66 | input.close(); |
| 67 | } |
| 68 | catch (IOException e) |
| 69 | { |
| 70 | logger.error("Problem reading property file [" + actualPath + "]", e); |
| 71 | } |
| 72 | _allProperties = properties; |
| 73 | } |
| 74 | |
| 75 | public String valueForSymbol(String name) |
| 76 | { |
| 77 | return _allProperties.getProperty(name); |
| 78 | } |
| 79 | |
| 80 | private Properties _allProperties = new Properties(); |
| 81 | } |