Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/transition/MinMaxTransition.java @ 305:91c37bf28c0e

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Remove chart from cache when data which is displayed in chart has changed. gnv-artifacts/trunk@363 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 23 Nov 2009 17:20:14 +0000
parents 4e8f0fd8ed79
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1 /**
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2 *
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3 */
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4 package de.intevation.gnv.transition;
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5
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6 import java.util.ArrayList;
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7 import java.util.Collection;
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8
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9 import org.apache.log4j.Logger;
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10
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11 import de.intevation.gnv.geobackend.base.Result;
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12 import de.intevation.gnv.transition.describedata.DefaultMinMaxDescribeData;
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13 import de.intevation.gnv.transition.describedata.DescribeData;
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14
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15 /**
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16 * @author Tim Englich <tim.englich@intevation.de>
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17 *
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18 */
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19 public class MinMaxTransition extends TransitionBase {
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20
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21 /**
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22 * The UID of this Class
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23 */
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24 private static final long serialVersionUID = -3525903792105187408L;
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25 /**
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26 * the logger, used to log exceptions and additonaly information
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27 */
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28 private static Logger log = Logger.getLogger(MinMaxTransition.class);
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29
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30 /**
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31 * Constructor
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32 */
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33 public MinMaxTransition() {
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34 super();
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35 }
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37 /**
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38 * @see de.intevation.gnv.transition.TransitionBase#purifyResult(java.util.Collection,
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39 * java.lang.String)
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40 */
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41 @Override
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42 protected void purifyResult(Collection<Result> result, String uuid) {
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43 log.debug("MinMaxTransition.purifyResult");
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44 Collection<Object> describeData = this.getDescibeData(uuid);
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45 if (describeData == null) {
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46 describeData = new ArrayList<Object>();
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47 }
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48 if (result != null && result.size() == 1) {
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49
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50 Result value = result.iterator().next();
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51 DescribeData values = new DefaultMinMaxDescribeData(this.dataName,
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52 value.getObject("MIN"),
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53 value.getObject("MAX"));
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54 log.debug(values.toString());
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55 describeData.add(values);
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56 } else {
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57 log.warn("Result cannot be handled as MinMax Resultset");
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58 }
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59 this.setDescibeData(uuid, describeData);
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60 }
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62 }
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