Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/MapInfoService.java @ 3814:8083f6384023
merged flys-artifacts/pre2.6-2012-01-04
| author | Thomas Arendsen Hein <thomas@intevation.de> |
|---|---|
| date | Fri, 28 Sep 2012 12:14:56 +0200 |
| parents | 092e1e5020bc |
| children | cbeeaaad1056 |
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| 1491:2a00f4849738 | 3814:8083f6384023 |
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| 1 package de.intevation.flys.artifacts.services; | |
| 2 | |
| 3 import org.apache.log4j.Logger; | |
| 4 | |
| 5 import org.w3c.dom.Document; | |
| 6 import org.w3c.dom.Element; | |
| 7 | |
| 8 import com.vividsolutions.jts.geom.Envelope; | |
| 9 | |
| 10 import de.intevation.artifacts.CallMeta; | |
| 11 import de.intevation.artifacts.GlobalContext; | |
| 12 | |
| 13 import de.intevation.artifacts.common.ArtifactNamespaceContext; | |
| 14 import de.intevation.artifacts.common.utils.Config; | |
| 15 import de.intevation.artifacts.common.utils.XMLUtils; | |
| 16 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator; | |
| 17 | |
| 18 import de.intevation.artifactdatabase.DefaultService; | |
| 19 | |
| 20 import de.intevation.flys.model.River; | |
| 21 | |
| 22 import de.intevation.flys.model.RiverAxis; | |
| 23 import de.intevation.flys.utils.GeometryUtils; | |
| 24 | |
| 25 /** | |
| 26 * This service provides information about the supported rivers by this | |
| 27 * application. | |
| 28 * | |
| 29 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
| 30 */ | |
| 31 public class MapInfoService extends DefaultService { | |
| 32 | |
| 33 /** XPath that points to the river.*/ | |
| 34 public static final String XPATH_RIVER = "/mapinfo/river/text()"; | |
| 35 | |
| 36 public static final String XPATH_RIVER_PROJECTION = | |
| 37 "/artifact-database/floodmap/river[@name='%RIVER%']/srid/@value"; | |
| 38 | |
| 39 public static final String XPATH_RIVER_BACKGROUND = | |
| 40 "/artifact-database/floodmap/river[@name='%RIVER%']/background-wms"; | |
| 41 | |
| 42 public static final String XPATH_RIVER_WMS = | |
| 43 "/artifact-database/floodmap/river[@name='%RIVER%']/river-wms/@url"; | |
| 44 | |
| 45 | |
| 46 /** The logger used in this service.*/ | |
| 47 private static Logger logger = Logger.getLogger(MapInfoService.class); | |
| 48 | |
| 49 | |
| 50 /** | |
| 51 * The default constructor. | |
| 52 */ | |
| 53 public MapInfoService() { | |
| 54 } | |
| 55 | |
| 56 | |
| 57 public Document process( | |
| 58 Document data, | |
| 59 GlobalContext globalContext, | |
| 60 CallMeta callMeta | |
| 61 ) { | |
| 62 logger.debug("MapInfoService.process"); | |
| 63 | |
| 64 Document result = XMLUtils.newDocument(); | |
| 65 ElementCreator cr = new ElementCreator(result, null, null); | |
| 66 | |
| 67 Element mapinfo = cr.create("mapinfo"); | |
| 68 result.appendChild(mapinfo); | |
| 69 | |
| 70 String river = extractRiver(data); | |
| 71 if (river == null || river.length() == 0) { | |
| 72 logger.warn("Cannot generate information: river is empty!"); | |
| 73 return result; | |
| 74 } | |
| 75 | |
| 76 Element root = cr.create("river"); | |
| 77 cr.addAttr(root, "name", river); | |
| 78 mapinfo.appendChild(root); | |
| 79 | |
| 80 RiverAxis axis = RiverAxis.getRiverAxis(river); | |
| 81 if (axis != null) { | |
| 82 Envelope env = axis.getGeom().getEnvelopeInternal(); | |
| 83 String bounds = GeometryUtils.jtsBoundsToOLBounds(env); | |
| 84 | |
| 85 logger.debug("River '" + river + "' bounds: " + bounds); | |
| 86 Element bbox = cr.create("bbox"); | |
| 87 cr.addAttr(bbox, "value", bounds); | |
| 88 root.appendChild(bbox); | |
| 89 } | |
| 90 | |
| 91 String xpathS = XPATH_RIVER_PROJECTION.replace("%RIVER%", river); | |
| 92 String sridStr = Config.getStringXPath(xpathS); | |
| 93 if (sridStr != null && sridStr.length() > 0) { | |
| 94 Element srid = cr.create("srid"); | |
| 95 cr.addAttr(srid, "value", sridStr); | |
| 96 root.appendChild(srid); | |
| 97 } | |
| 98 | |
| 99 String xpathB = XPATH_RIVER_BACKGROUND.replace("%RIVER%", river); | |
| 100 Element back = (Element) Config.getNodeXPath(xpathB); | |
| 101 if (back != null) { | |
| 102 Element background = cr.create("background-wms"); | |
| 103 cr.addAttr(background, "url", back.getAttribute("url")); | |
| 104 cr.addAttr(background, "layers", back.getAttribute("layers")); | |
| 105 root.appendChild(background); | |
| 106 } | |
| 107 | |
| 108 String xpathWMS = XPATH_RIVER_WMS.replace("%RIVER%", river); | |
| 109 String wmsStr = Config.getStringXPath(xpathWMS); | |
| 110 if (wmsStr != null && wmsStr.length() > 0) { | |
| 111 Element wms = cr.create("river-wms"); | |
| 112 cr.addAttr(wms, "url", wmsStr); | |
| 113 root.appendChild(wms); | |
| 114 } | |
| 115 | |
| 116 return result; | |
| 117 } | |
| 118 | |
| 119 | |
| 120 protected String extractRiver(Document data) { | |
| 121 return XMLUtils.xpathString( | |
| 122 data, XPATH_RIVER, ArtifactNamespaceContext.INSTANCE); | |
| 123 } | |
| 124 } | |
| 125 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |