Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/BlackboardDataFacet.java @ 4578:8304f982984f

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Merged
author Christian Lins <christian.lins@intevation.de>
date Tue, 27 Nov 2012 15:59:26 +0100
parents ccc955ef8811
children
rev   line source
2024
2bb160b2768e New facet, will ease converting other facets to be able to contribute to area computations.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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1 package de.intevation.flys.artifacts.model;
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2
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3 import java.util.ArrayList;
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4 import java.util.List;
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5
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6 import de.intevation.artifacts.Artifact;
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7 import de.intevation.artifacts.CallContext;
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8
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9 import de.intevation.artifactdatabase.state.Facet;
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10 import de.intevation.artifactdatabase.state.DefaultFacet;
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11
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12
2bb160b2768e New facet, will ease converting other facets to be able to contribute to area computations.
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13 /**
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14 * Facet that writes artifact-uui and facet index on the blackboard,
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15 * delivers data if asked so.
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16 */
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17 public class BlackboardDataFacet extends DefaultFacet {
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18
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19 public BlackboardDataFacet() {}
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20
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21 /** Do not instantiate a BlackboardDataFacet, subclass it instead. */
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22 public BlackboardDataFacet(int idx, String name, String description) {
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23 super(idx, name, description);
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24 }
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25
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26
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27 /** Do not instantiate a BlackboardDataFacet, subclass it instead. */
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28 public BlackboardDataFacet(String name, String description) {
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29 super(0, name, description);
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30 }
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31
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32
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33 /** Define key to which to respond when asked for 'blackboard'
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34 * (DataProvider)- data. */
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35 public String areaDataKey(Artifact art) {
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36 return art.identifier() + ":" + getName() + ":" + getIndex();
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37 }
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38
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39
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40 /** Hey, We can ArtifactUUID+:+FacetName+:+FacetIndex (i.e. getData)! */
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41 @Override
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42 public List getStaticDataProviderKeys(Artifact art) {
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43 List list = new ArrayList();
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44 list.add(areaDataKey(art));
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45 return list;
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46 }
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47
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48
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49 /**
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50 * Can provide whatever getData returns.
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51 * @param key will respond on uuid+index
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52 * @param param ignored
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53 * @param context ignored
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54 * @return whatever getData delivers.
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55 */
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56 @Override
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57 public Object provideBlackboardData(Artifact artifact,
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58 Object key,
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59 Object param,
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60 CallContext context
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61 ) {
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62 if (key.equals(areaDataKey(artifact))) {
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63 return getData(artifact, context);
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64 }
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65 else {
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66 return null;
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67 }
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68 }
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69
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70 /** Copy deeply. */
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71 @Override
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72 public Facet deepCopy() {
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73 BlackboardDataFacet copy = new BlackboardDataFacet();
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74 copy.set(this);
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75 return copy;
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76 }
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77 }
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78 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org