Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/state/profile/vertical/VerticalProfileMeshVectorOutputState.java @ 1115:f953c9a559d8

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Added license file and license headers. gnv-artifacts/trunk@1260 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 02 Nov 2010 17:46:55 +0000
parents 6f35dcd81418
children
rev   line source
1115
f953c9a559d8 Added license file and license headers.
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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.state.profile.vertical;
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10
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11 import de.intevation.artifacts.CallContext;
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12
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13 import de.intevation.gnv.artifacts.cache.CacheFactory;
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14
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15 import de.intevation.gnv.geobackend.base.Result;
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16
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17 import de.intevation.gnv.utils.VectorDataProcessor;
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18
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19 import java.util.Collection;
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20
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21 import net.sf.ehcache.Cache;
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22
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23 import org.apache.log4j.Logger;
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24
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25
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26 /**
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27 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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28 */
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29 public class VerticalProfileMeshVectorOutputState
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30 extends VerticalProfileVectorOutputState
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31 {
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32 public static final String[] RESULT_COLUMNS = {
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33 "YORDINATE", "XORDINATE", "KPOSITION",
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34 "GROUP1", "GROUP2", "GROUP3",
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35 "DATAID", "FEATUREID", "MESHID",
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36 "SERIES"
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37 };
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38
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39 private static Logger logger =
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40 Logger.getLogger(VerticalProfileMeshVectorOutputState.class);
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41
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42
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43 @Override
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44 protected Object getChartResult(String uuid, CallContext callContext) {
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45 logger.debug("Fetch chart data for vertical profile with vector data.");
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46 CacheFactory factory = CacheFactory.getInstance();
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47
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48 if (factory.isInitialized()) {
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49 // we use a cache
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50 logger.info("Using cache.");
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51 Cache cache = factory.getCache();
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52 String key = "chart_" + getHash();
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53
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54 net.sf.ehcache.Element value = cache.get(key);
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55 if (value != null) {
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56 logger.debug("Found element in cache.");
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57 return value.getObjectValue();
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58 }
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59 else {
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60 logger.debug("Element not in cache, we ask the database");
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61 Collection<Result> res = (Collection<Result>)getData(queryID);
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62 logger.debug("Got " + res.size() + " elements from db.");
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63
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64 res = VectorDataProcessor.process(res, RESULT_COLUMNS);
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65 cache.put(new net.sf.ehcache.Element(key, res));
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66
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67 return res;
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68 }
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69 }
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70 else {
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71 // we don't use a cache, so we have to query the database every
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72 // single time
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73 logger.info("Not using a cache.");
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74 return VectorDataProcessor.process(
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75 getData(queryID), RESULT_COLUMNS);
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76 }
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77 }
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78 }
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79 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org