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annotate flys-client/src/main/java/de/intevation/flys/client/client/Config.java @ 9:8facd8545a12

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Added a global configuration for the client and classes providing methods to retrieve these information. flys-client/trunk@1317 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 16 Feb 2011 14:50:06 +0000
parents
children 924da6695800
rev   line source
9
8facd8545a12 Added a global configuration for the client and classes providing methods to retrieve these information.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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1 package de.intevation.flys.client.client;
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2
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3 import com.google.gwt.xml.client.Document;
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4 import com.google.gwt.xml.client.Node;
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5
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6
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7 /**
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8 * A class that is used to handle the global configuration of this client. You
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9 * can retrieve an instance of this class using the <code>getInstance</code>
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10 * methods. <b>NOTE:</b> the configuration is initialized using {@link
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11 * getInstance(Document)} the first time.
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12 *
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13 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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14 */
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15 public class Config {
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16
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17 /** The instance of the configuration. */
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18 protected static Config INSTANCE;
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19
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20 /** The xml document that contains the configuration options.*/
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21 protected Document config;
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22
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23
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24 /**
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25 * Get an instance by using {@link getInstance(Document)} or {@link
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26 * getInstance()}.
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27 */
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28 private Config(Document config) {
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29 this.config = config;
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30 }
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31
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32
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33 /**
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34 * Returns an instance of this class and initializes the configuration of
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35 * this has not been done so far.
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36 *
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37 * @param config The client configuration.
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38 *
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39 * @return an instance of this Config class.
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40 */
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41 public static Config getInstance(Document config) {
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42 if (INSTANCE == null) {
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43 INSTANCE = new Config(config);
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44 }
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45
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46 return INSTANCE;
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47 }
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48
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49
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50 /**
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51 * Returns an instance of this class. If it has not been initialized with a
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52 * valid configuration, null is returned.
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53 *
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54 * @return an instance of this class or null, if the Config has not been
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55 * initialized using {@link getInstance(Document)} so far.
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56 */
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57 public static Config getInstance() {
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58 return INSTANCE;
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59 }
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60
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61
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62 /**
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63 * Returns the URL of the artifact server.
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64 *
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65 * @return the artifact server url.
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66 */
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67 public String getServerUrl() {
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68 Node server = config.getElementsByTagName("server").item(0);
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69 return server.getFirstChild().getNodeValue();
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70 }
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71 }
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72 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org