Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/MapInfoService.java @ 2004:94c4dd5aaf20
Made StaticState a bit more convenient to use.
flys-artifacts/trunk@3446 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Fri, 16 Dec 2011 14:11:50 +0000 |
parents | 092e1e5020bc |
children | cbeeaaad1056 |
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package de.intevation.flys.artifacts.services; import org.apache.log4j.Logger; import org.w3c.dom.Document; import org.w3c.dom.Element; import com.vividsolutions.jts.geom.Envelope; import de.intevation.artifacts.CallMeta; import de.intevation.artifacts.GlobalContext; import de.intevation.artifacts.common.ArtifactNamespaceContext; import de.intevation.artifacts.common.utils.Config; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator; import de.intevation.artifactdatabase.DefaultService; import de.intevation.flys.model.River; import de.intevation.flys.model.RiverAxis; import de.intevation.flys.utils.GeometryUtils; /** * This service provides information about the supported rivers by this * application. * * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class MapInfoService extends DefaultService { /** XPath that points to the river.*/ public static final String XPATH_RIVER = "/mapinfo/river/text()"; public static final String XPATH_RIVER_PROJECTION = "/artifact-database/floodmap/river[@name='%RIVER%']/srid/@value"; public static final String XPATH_RIVER_BACKGROUND = "/artifact-database/floodmap/river[@name='%RIVER%']/background-wms"; public static final String XPATH_RIVER_WMS = "/artifact-database/floodmap/river[@name='%RIVER%']/river-wms/@url"; /** The logger used in this service.*/ private static Logger logger = Logger.getLogger(MapInfoService.class); /** * The default constructor. */ public MapInfoService() { } public Document process( Document data, GlobalContext globalContext, CallMeta callMeta ) { logger.debug("MapInfoService.process"); Document result = XMLUtils.newDocument(); ElementCreator cr = new ElementCreator(result, null, null); Element mapinfo = cr.create("mapinfo"); result.appendChild(mapinfo); String river = extractRiver(data); if (river == null || river.length() == 0) { logger.warn("Cannot generate information: river is empty!"); return result; } Element root = cr.create("river"); cr.addAttr(root, "name", river); mapinfo.appendChild(root); RiverAxis axis = RiverAxis.getRiverAxis(river); if (axis != null) { Envelope env = axis.getGeom().getEnvelopeInternal(); String bounds = GeometryUtils.jtsBoundsToOLBounds(env); logger.debug("River '" + river + "' bounds: " + bounds); Element bbox = cr.create("bbox"); cr.addAttr(bbox, "value", bounds); root.appendChild(bbox); } String xpathS = XPATH_RIVER_PROJECTION.replace("%RIVER%", river); String sridStr = Config.getStringXPath(xpathS); if (sridStr != null && sridStr.length() > 0) { Element srid = cr.create("srid"); cr.addAttr(srid, "value", sridStr); root.appendChild(srid); } String xpathB = XPATH_RIVER_BACKGROUND.replace("%RIVER%", river); Element back = (Element) Config.getNodeXPath(xpathB); if (back != null) { Element background = cr.create("background-wms"); cr.addAttr(background, "url", back.getAttribute("url")); cr.addAttr(background, "layers", back.getAttribute("layers")); root.appendChild(background); } String xpathWMS = XPATH_RIVER_WMS.replace("%RIVER%", river); String wmsStr = Config.getStringXPath(xpathWMS); if (wmsStr != null && wmsStr.length() > 0) { Element wms = cr.create("river-wms"); cr.addAttr(wms, "url", wmsStr); root.appendChild(wms); } return result; } protected String extractRiver(Document data) { return XMLUtils.xpathString( data, XPATH_RIVER, ArtifactNamespaceContext.INSTANCE); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :