Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/transition/PresettingsValueCompareTransition.java @ 1062:58b4a07db856

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Cach improvement: remove the cached elements of each visited state that is visited while stepping back to a previous state. gnv-artifacts/trunk@1147 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 02 Jun 2010 09:52:39 +0000
parents 2423cefe7d39
children f953c9a559d8
rev   line source
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e86d37008fd1 Added new Transition and State for using the PreSettingsValue for the decision if a Transition could be used
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1 package de.intevation.gnv.transition;
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2
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3 import java.util.Map;
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4
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5 import org.apache.log4j.Logger;
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6 import org.w3c.dom.Node;
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7
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8 import de.intevation.artifactdatabase.Config;
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9 import de.intevation.gnv.state.InputData;
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10 import de.intevation.gnv.state.State;
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11
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12 /**
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13 * Class which supports the possibility to validate if a
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14 * Transition could be done using simple Valuecompare Operations.
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15 * The Compareoperations will use the preSettings of an Artifact.
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16 * At this Time equal and notequal-operations are supported.
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17 * The Comparation is casesensitive.
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18 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
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19 *
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20 */
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21 public class PresettingsValueCompareTransition extends TransitionBase {
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22
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23 /**
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24 * the logger, used to log exceptions and additonaly information
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25 */
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26 private static Logger log = Logger.getLogger(PresettingsValueCompareTransition.class);
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27
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28 /**
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29 * The Name of the Datafield the Value that should be compared
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30 * should be fetched from.
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31 */
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32 private String dataName = null;
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33 /**
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34 * The Value that should be set to the State.
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35 */
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36 private String dataValue = null;
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37 /**
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38 * The Operation that should be used (equal notequal)
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39 */
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40 private String operator = null;
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41
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42 /**
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43 * The UID of this Class.
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44 */
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45 private static final long serialVersionUID = -7846722158776823205L;
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46
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47 /**
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48 * Constructor
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49 */
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50 public PresettingsValueCompareTransition() {
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51 super();
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52 }
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53
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54
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55 public boolean isValid(State state) {
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56 Map<String, InputData> preSettings = state.getPreSettings();
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57 if (preSettings != null){
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58 boolean dataAvailable = preSettings.containsKey(dataName);
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59 if (dataAvailable){
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60 if (operator.equals("equal")){
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61 return preSettings.get(dataName).getValue().startsWith(dataValue);
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62 }else if (operator.equals("notequal")){
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63 return !preSettings.get(dataName).getValue().startsWith(dataValue);
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64 }
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65 }
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66 }
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67 if (operator.equals("notequal")){
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68 return true;
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69 }
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70 return false;
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71 }
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72
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74 @Override
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75 public void setup(Node configuration) {
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76 super.setup(configuration);
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77 this.dataName = Config.getStringXPath(configuration,"condition/@inputvalue");
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78 this.dataValue = Config.getStringXPath(configuration,"condition/@value");
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79 this.operator = Config.getStringXPath(configuration,"condition/@operator");
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80 }
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81 }
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82 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org