Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/GaugeOverviewInfoServiceImpl.java @ 3842:44c1beb78ad1
Move GaugeTree to its own java file
flys-client/trunk@5557 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Bjoern Ricks <bjoern.ricks@intevation.de> |
---|---|
date | Fri, 21 Sep 2012 13:44:56 +0000 |
parents | 70976b711b7e |
children | 8e169e4e1b57 |
line wrap: on
line source
package de.intevation.flys.client.server; import java.util.ArrayList; import javax.xml.xpath.XPathConstants; import org.apache.log4j.Logger; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.NodeList; import de.intevation.artifacts.common.ArtifactNamespaceContext; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.artifacts.httpclient.exceptions.ConnectionException; import de.intevation.artifacts.httpclient.http.HttpClient; import de.intevation.artifacts.httpclient.http.HttpClientImpl; import de.intevation.flys.client.client.services.GaugeOverviewInfoService; import de.intevation.flys.client.shared.exceptions.ServerException; import de.intevation.flys.client.shared.model.DefaultGaugeInfo; import de.intevation.flys.client.shared.model.DefaultRiverInfo; import de.intevation.flys.client.shared.model.GaugeInfo; import de.intevation.flys.client.shared.model.RiverInfo; /** * @author <a href="mailto:bjoern.ricks@intevation.de">Björn Ricks</a> */ public class GaugeOverviewInfoServiceImpl extends RemoteServiceServlet implements GaugeOverviewInfoService { private static final Logger logger = Logger.getLogger(GaugeOverviewInfoServiceImpl.class); public static final String ERROR_NO_RIVERINFO_FOUND = "error_no_gaugeoverviewinfo_found"; private static final String XPATH_RIVER = "/art:gauge-info/art:river"; private static final String XPATH_GAUGES = "/art:gauge-info/art:gauges/art:gauge"; public RiverInfo getRiverInfo(String river) throws ServerException { logger.info("RiverInfoServiceImpl.getRiverInfo"); String url = getServletContext().getInitParameter("server-url"); Document doc = XMLUtils.newDocument(); XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( doc, ArtifactNamespaceContext.NAMESPACE_URI, ArtifactNamespaceContext.NAMESPACE_PREFIX); Element riverele = ec.create("river"); riverele.setTextContent(river); doc.appendChild(riverele); HttpClient client = new HttpClientImpl(url); try { Document result = client.callService(url, "gaugeoverviewinfo", doc); Element riverresp = (Element) XMLUtils.xpath( result, XPATH_RIVER, XPathConstants.NODE, ArtifactNamespaceContext.INSTANCE); String rname = riverresp.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "name"); String rkmup = riverresp.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "kmup"); String rstart = riverresp.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "start"); String rend = riverresp.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "end"); String rwstunit = riverresp.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "wstunit"); String rminq = riverresp.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "minq"); String rmaxq = riverresp.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "maxq"); String rinfourl = riverresp.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "info-url"); logger.debug("River is " + rname); boolean kmup = rkmup.equalsIgnoreCase("true"); NodeList gaugenodes = (NodeList) XMLUtils.xpath( result, XPATH_GAUGES, XPathConstants.NODESET, ArtifactNamespaceContext.INSTANCE); int num = gaugenodes == null ? 0 : gaugenodes.getLength(); ArrayList<GaugeInfo> gauges = new ArrayList<GaugeInfo>(num); if (num == 0) { logger.warn("No gauge info found."); } else { logger.debug("Found " + num + " gauges."); for (int i = 0; i < num; i++) { Element gaugeele = (Element)gaugenodes.item(i); String gname = gaugeele.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "name"); String gstart = gaugeele.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "start"); String gend = gaugeele.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "end"); String gdatum = gaugeele.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "datum"); String gaeo = gaugeele.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "aeo"); String gminq = gaugeele.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "minq"); String gminw = gaugeele.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "minw"); String gmaxq = gaugeele.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "maxq"); String gmaxw = gaugeele.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "maxw"); String gstation = gaugeele.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "station"); String ginfourl = riverresp.getAttributeNS( ArtifactNamespaceContext.NAMESPACE_URI, "info-url"); logger.debug("Found gauge with name " + gname); GaugeInfo gaugeinfo = new DefaultGaugeInfo( gname, kmup, parseDouble(gstation), parseDouble(gstart), parseDouble(gend), parseDouble(gdatum), parseDouble(gaeo), parseDouble(gminq), parseDouble(gmaxq), parseDouble(gminw), parseDouble(gmaxw), rwstunit, ginfourl ); gauges.add(gaugeinfo); } } RiverInfo riverinfo = new DefaultRiverInfo( rname, kmup, parseDouble(rstart), parseDouble(rend), rwstunit, parseDouble(rminq), parseDouble(rmaxq), rinfourl, gauges); logger.debug("Finished RiverInfoService."); return riverinfo; } catch (ConnectionException ce) { logger.error(ce, ce); } logger.warn("No gauge found"); throw new ServerException(ERROR_NO_RIVERINFO_FOUND); } /** * Avoids NullPointerException when parsing double value */ private Double parseDouble(String value) { if (value == null || value.isEmpty()) { return null; } try { return Double.valueOf(value); } catch(NumberFormatException e) { logger.error(e, e); return null; } } }