Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/raster/ExternalIndexConverter.java @ 1063:732cea65cee7
Changed the geo-backend initialization regarding the changes of rev1149. An sql-cache is integrated and enabled now.
gnv-artifacts/trunk@1150 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Thu, 03 Jun 2010 16:10:27 +0000 |
parents | feae2f9d6c6f |
children | f953c9a559d8 |
rev | line source |
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1 package de.intevation.gnv.raster; |
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2 |
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3 import org.apache.log4j.Logger; |
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4 |
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5 /** |
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6 * Converts the interal color index of a polygon to the external index |
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7 * defined by the corresponding palette entry. |
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8 * |
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9 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a> |
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10 */ |
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11 public class ExternalIndexConverter |
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12 implements JTSMultiPolygonProducer.ValueConverter |
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13 { |
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14 private static Logger log = Logger.getLogger( |
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15 ExternalIndexConverter.class); |
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16 |
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17 /** |
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18 * The palette where to find the color indices. |
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19 */ |
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20 protected Palette palette; |
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21 |
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22 /** |
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23 * Default constructor. |
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24 */ |
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25 public ExternalIndexConverter() { |
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26 } |
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27 |
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28 /** |
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29 * Constrcutor to create an ExternalIndexConverter with |
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30 * a given palette. |
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31 * @param palette The palette where to find the color indices. |
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32 */ |
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33 public ExternalIndexConverter(Palette palette) { |
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34 this.palette = palette; |
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35 } |
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36 |
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37 /** |
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38 * Maps the color index of a polygon to the external index |
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39 * defined by the corresponing palette entry. |
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40 * @param value The value to convert |
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41 * @return The mapped value or the original value if |
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42 * no corresponing palette entry was found. |
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43 */ |
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44 public Integer convert(Integer value) { |
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45 if (value == null) { |
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46 return value; |
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47 } |
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48 |
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49 int v = value.intValue(); |
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50 |
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51 if (v == -1) { |
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52 return value; |
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53 } |
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54 |
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55 Palette.Entry entry = palette.getEntryByIndex(v); |
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56 |
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57 if (entry == null) { |
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58 log.warn("cannot find palette entry for index: " + v); |
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59 return value; |
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60 } |
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61 |
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62 return Integer.valueOf(entry.getExternalIndex()); |
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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=utf8 : |