Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/MapInfoService.java @ 1058:c37084f31c84
Implemented a MapInfo service that returns some basic information to create maps for specific rivers.
flys-artifacts/trunk@2528 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Tue, 23 Aug 2011 07:53:41 +0000 |
| parents | |
| children | b1b0a0b61845 |
comparison
equal
deleted
inserted
replaced
| 1057:d4a5d3941cc0 | 1058:c37084f31c84 |
|---|---|
| 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.Geometry; | |
| 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.backend.SessionHolder; | |
| 21 import de.intevation.flys.model.River; | |
| 22 | |
| 23 import de.intevation.flys.model.RiverAxis; | |
| 24 import de.intevation.flys.artifacts.model.RiverFactory; | |
| 25 import de.intevation.flys.utils.GeometryUtils; | |
| 26 | |
| 27 import org.hibernate.Session; | |
| 28 | |
| 29 /** | |
| 30 * This service provides information about the supported rivers by this | |
| 31 * application. | |
| 32 * | |
| 33 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
| 34 */ | |
| 35 public class MapInfoService extends DefaultService { | |
| 36 | |
| 37 /** XPath that points to the river.*/ | |
| 38 public static final String XPATH_RIVER = "/mapinfo/river/text()"; | |
| 39 | |
| 40 public static final String XPATH_RIVER_PROJECTION = | |
| 41 "/artifact-database/floodmap/river[@name='%RIVER%']/srid/@value"; | |
| 42 | |
| 43 public static final String XPATH_RIVER_BACKGROUND = | |
| 44 "/artifact-database/floodmap/river[@name='%RIVER%']/background-wms"; | |
| 45 | |
| 46 public static final String XPATH_RIVER_WMS = | |
| 47 "/artifact-database/floodmap/river[@name='%RIVER%']/river-wms/@url"; | |
| 48 | |
| 49 | |
| 50 /** The logger used in this service.*/ | |
| 51 private static Logger logger = Logger.getLogger(MapInfoService.class); | |
| 52 | |
| 53 | |
| 54 /** | |
| 55 * The default constructor. | |
| 56 */ | |
| 57 public MapInfoService() { | |
| 58 } | |
| 59 | |
| 60 | |
| 61 public Document process( | |
| 62 Document data, | |
| 63 GlobalContext globalContext, | |
| 64 CallMeta callMeta | |
| 65 ) { | |
| 66 logger.debug("MapInfoService.process"); | |
| 67 | |
| 68 Document result = XMLUtils.newDocument(); | |
| 69 ElementCreator cr = new ElementCreator(result, null, null); | |
| 70 | |
| 71 Element mapinfo = cr.create("mapinfo"); | |
| 72 result.appendChild(mapinfo); | |
| 73 | |
| 74 String river = extractRiver(data); | |
| 75 if (river == null || river.length() == 0) { | |
| 76 logger.warn("Cannot generate information: river is empty!"); | |
| 77 return result; | |
| 78 } | |
| 79 | |
| 80 Element root = cr.create("river"); | |
| 81 cr.addAttr(root, "name", river); | |
| 82 mapinfo.appendChild(root); | |
| 83 | |
| 84 RiverAxis axis = RiverAxis.getRiverAxis(river); | |
| 85 if (axis != null) { | |
| 86 Geometry geom = axis.getGeom().getBoundary(); | |
| 87 String bounds = GeometryUtils.jtsBoundsToOLBounds(geom); | |
| 88 | |
| 89 logger.debug("River '" + river + "' bounds: " + bounds); | |
| 90 Element bbox = cr.create("bbox"); | |
| 91 cr.addAttr(bbox, "value", bounds); | |
| 92 root.appendChild(bbox); | |
| 93 } | |
| 94 | |
| 95 String xpathS = XPATH_RIVER_PROJECTION.replace("%RIVER%", river); | |
| 96 String sridStr = Config.getStringXPath(xpathS); | |
| 97 if (sridStr != null && sridStr.length() > 0) { | |
| 98 Element srid = cr.create("srid"); | |
| 99 cr.addAttr(srid, "value", sridStr); | |
| 100 root.appendChild(srid); | |
| 101 } | |
| 102 | |
| 103 String xpathB = XPATH_RIVER_BACKGROUND.replace("%RIVER%", river); | |
| 104 Element back = (Element) Config.getNodeXPath(xpathB); | |
| 105 if (back != null) { | |
| 106 Element background = cr.create("background-wms"); | |
| 107 cr.addAttr(background, "url", back.getAttribute("url")); | |
| 108 cr.addAttr(background, "layers", back.getAttribute("layers")); | |
| 109 root.appendChild(background); | |
| 110 } | |
| 111 | |
| 112 String xpathWMS = XPATH_RIVER_WMS.replace("%RIVER%", river); | |
| 113 String wmsStr = Config.getStringXPath(xpathWMS); | |
| 114 if (wmsStr != null && wmsStr.length() > 0) { | |
| 115 Element wms = cr.create("river-wms"); | |
| 116 cr.addAttr(wms, "url", wmsStr); | |
| 117 root.appendChild(wms); | |
| 118 } | |
| 119 | |
| 120 return result; | |
| 121 } | |
| 122 | |
| 123 | |
| 124 protected String extractRiver(Document data) { | |
| 125 return XMLUtils.xpathString( | |
| 126 data, XPATH_RIVER, ArtifactNamespaceContext.INSTANCE); | |
| 127 } | |
| 128 } | |
| 129 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |