2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with the com.oreilly.servlet library, any library
22 * licensed under the Apache Software License, The Sun (tm) Java Advanced
23 * Imaging library (JAI), The Sun JIMI library (or with modified versions of
24 * the above that use the same license as the above), and distribute linked
25 * combinations including the two. You must obey the GNU General Public
26 * License in all respects for all of the code used other than the above
27 * mentioned libraries. If you modify this file, you may extend this exception
28 * to your version of the file, but you are not obligated to do so. If you do
29 * not wish to do so, delete this exception statement from your version.
34 import multex.Failure;
36 import org.apache.commons.collections.ExtendedProperties;
39 import java.io.FileNotFoundException;
40 import java.io.IOException;
42 import java.util.HashMap;
43 import java.util.Iterator;
46 import javax.servlet.ServletContext;
52 public class MirPropertiesConfiguration extends ExtendedProperties {
53 private static MirPropertiesConfiguration instance;
54 private static ServletContext context;
55 private static String contextPath;
57 //if one of these properties is not present a new
58 //property is added with its default value;
59 private static NeededProperty[] neededWithValue =
61 new NeededProperty("Producer.DocRoot", ""),
62 new NeededProperty("Producer.ImageRoot", ""),
63 new NeededProperty("Producer.Image.Path", ""),
64 new NeededProperty("Producer.Media.Path", ""),
65 new NeededProperty("Producer.RealMedia.Path", ""),
66 new NeededProperty("Producer.Image.IconPath", "")
70 * Constructor for MirPropertiesConfiguration.
72 private MirPropertiesConfiguration(ServletContext ctx, String ctxPath)
74 super(ctx.getRealPath("/WEB-INF/etc/") + "/config.properties",
75 ctx.getRealPath("/WEB-INF/") + "/default.properties");
76 addProperty("Home", ctx.getRealPath("/WEB-INF/") + "/");
80 public static synchronized MirPropertiesConfiguration instance()
81 throws PropertiesConfigExc {
82 if (instance == null) {
83 if (context == null) {
84 throw new MirPropertiesConfiguration.PropertiesConfigExc(
85 "Context was not set");
89 instance = new MirPropertiesConfiguration(context, contextPath);
90 } catch (IOException e) {
100 * @param context The context to set
102 public static void setContext(ServletContext context) {
103 MirPropertiesConfiguration.context = context;
107 * Returns the context.
108 * @return ServletContext
110 public static ServletContext getContext() {
115 * Returns all properties in a Map
118 public Map allSettings() {
119 Iterator iterator = this.getKeys();
120 Map returnMap = new HashMap();
122 while (iterator.hasNext()) {
123 String key = (String) iterator.next();
124 Object o = this.getProperty(key);
130 returnMap.put(key, o);
137 * Returns a String-property concatenated with the home-dir of the
142 public String getStringWithHome(String key) {
143 String returnString = getString(key);
145 if (returnString == null) {
146 returnString = new String();
149 return getString("Home") + returnString;
153 * Checks if one property is missing and adds a default value
155 private void checkMissing() {
156 for (int i = 0; i < neededWithValue.length; i++) {
157 if (super.getProperty(neededWithValue[i].getKey()) == null) {
158 addProperty(neededWithValue[i].getKey(), neededWithValue[i].getValue());
163 public File getFile(String key) throws FileNotFoundException {
164 String path = getStringWithHome(key);
165 File returnFile = new File(path);
167 if (returnFile.exists()) {
170 throw new FileNotFoundException();
175 * @return the vlaue of this property as String
176 * @param key the key of this property
177 * @see org.apache.commons.configuration.Configuration#getString(java.lang.String)
179 public String getString(String key) {
180 return getString(key, "");
185 * @return the value of this property as String
186 * @param key the key of the property
187 * @param defaultValue the default value of this property if it is null
188 * @see org.apache.commons.collections.ExtendedProperties#getString(java.lang.String, java.lang.String)
190 public String getString(String key, String defaultValue) {
191 Object object = getProperty(key);
193 if (defaultValue == null) {
198 if (object instanceof String) {
199 return (String)object;
201 return object.toString();
205 * Returns a property according to the given key
206 * @param key the key of the property
207 * @return the value of the property as Object, if no property available it returns a empty String
208 * @see org.apache.commons.configuration.Configuration#getString(java.lang.String)
210 public Object getProperty(String key) {
211 if (super.getProperty(key) == null) {
215 return super.getProperty(key);
221 public static class PropertiesConfigExc extends Exc {
223 * Constructor for PropertiesConfigExc.
226 public PropertiesConfigExc(String msg) {
234 public static class PropertiesConfigFailure extends Failure {
236 * Constructor for PropertiesConfigExc.
239 public PropertiesConfigFailure(String msg, Throwable cause) {
245 * A Class for properties to be checked
248 private static class NeededProperty {
250 private String _value;
252 public NeededProperty(String key, String value) {
257 public String getKey() {
261 public String getValue() {