Mercurial > dive4elements > gnv-client

annotate gnv/src/main/java/de/intevation/gnv/propertiesreader/ServletPropertiesReader.java @ 1022:28a0628b11b0

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Added license file and license header. gnv/trunk@1258 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 02 Nov 2010 17:15:08 +0000
parents c3d628c2c4c3
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1 /*
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2 * Copyright (c) 2010 by Intevation GmbH
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3 *
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4 * This program is free software under the LGPL (>=v2.1)
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5 * Read the file LGPL.txt coming with the software for details
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
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7 */
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8
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9 package de.intevation.gnv.propertiesreader;
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10
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11 import java.util.Enumeration;
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12 import java.util.HashMap;
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13 import java.util.Map;
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14
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15 import javax.servlet.ServletConfig;
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16
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17 import org.apache.log4j.Logger;
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18
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19 /**
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20 * This reader fetches the properties it will provide from the
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21 * <code>ServletConfig</code> of an <code>Context</code>.
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22 * It will read the InitParameters which could be configured using
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23 * the <code>web.xml</code-file of each <code>context</code>.
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24 *
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25 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
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26 *
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27 */
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28 public class ServletPropertiesReader implements PropertiesReader {
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29
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30 /**
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31 * the logger, used to log exceptions and additonaly information
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32 */
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33 private static Logger log = Logger.getLogger(ServletPropertiesReader.class);
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34
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35 /**
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36 * The properties which are read from the <code>ServletConfig</code>.
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37 */
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38 private Map<String, String> properties = null;
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39
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40 /**
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41 * Constructor
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42 *
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43 * @param config the <code>ServletConfig</code> where
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44 * the properties should be read from.
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45 */
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46 public ServletPropertiesReader(ServletConfig config) {
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47 super();
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48 log.info("ServletPropertiesReader will be initialized");
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49 if (config != null) {
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50
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51 Enumeration<String> keys = config.getInitParameterNames();
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52 properties = new HashMap<String, String>();
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53 while (keys.hasMoreElements()) {
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54 String key = keys.nextElement();
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55 String value = config.getInitParameter(key);
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56 log.info("New ConbfigurationValue; " + key + " ==> " + value);
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57 this.properties.put(key, value);
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58 }
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59 }
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60 }
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61
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63 public String getPropertieValue(String key, String defaultValue) {
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64 String value = this.properties.get(key);
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65 if (value == null) {
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66 value = defaultValue;
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67 }
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68 return value;
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69 }
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70 }
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71 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org