Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/state/StateFactory.java @ 1111:19182eaccc8d
Added a prefix for WMS layers to prevent the mapserver from generating invalid xml that would end in a bug (issue314, issue315).
gnv-artifacts/trunk@1245 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Tue, 29 Jun 2010 16:35:36 +0000 |
parents | 05bf8534a35a |
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1 package de.intevation.gnv.state; |
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2 |
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3 import de.intevation.gnv.artifacts.GNVArtifactBase; |
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4 |
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5 import org.apache.log4j.Logger; |
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6 |
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7 import org.w3c.dom.Node; |
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8 |
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9 /** |
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10 * This factory should be used to create new state objects with help of a |
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11 * configuration segment. |
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12 * |
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13 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a> |
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14 * |
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15 */ |
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16 public class StateFactory { |
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17 |
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18 /** |
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19 * the logger, used to log exceptions and additonaly information |
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20 */ |
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21 private static Logger log = Logger.getLogger(GNVArtifactBase.class); |
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22 |
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23 private static StateFactory instance = null; |
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24 |
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25 /** |
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26 * Constructor |
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27 */ |
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28 public StateFactory() { |
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29 super(); |
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30 } |
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31 |
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32 /** |
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33 * Return the instance of this class. |
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34 */ |
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35 public static StateFactory getInstance() { |
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36 if (instance == null) { |
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37 instance = new StateFactory(); |
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38 } |
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39 return instance; |
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40 } |
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41 |
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42 /** |
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43 * This method creates a new state with help of the information in <i> |
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44 * configuration</i> and calls its setup method after creation. |
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45 * |
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46 * @return the new state. |
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47 */ |
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48 public State createState(Node configuration) { |
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49 log.debug("StateFactory.createState"); |
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50 State state = null; |
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51 try { |
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52 String classname = ((org.w3c.dom.Element)configuration).getAttribute("state"); |
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53 state = (State) (Class.forName(classname).newInstance()); |
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54 state.setup(configuration); |
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55 } catch (InstantiationException e) { |
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56 log.error(e, e); |
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57 } catch (IllegalAccessException e) { |
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58 log.error(e, e); |
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59 } catch (ClassNotFoundException e) { |
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60 log.error(e, e); |
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61 } |
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62 return state; |
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63 } |
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64 } |
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65 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |