Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/ThemeListingServiceImpl.java @ 4241:49cb65d5932d
Improved the historical discharge calculation.
The calculation now creates new HistoricalWQKms (new subclass of WQKms). Those WQKms are used
to create new facets from (new) type 'HistoricalDischargeCurveFacet'. The chart generator is
improved to support those facets.
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Wed, 24 Oct 2012 14:34:35 +0200 |
parents | 37dce0f2f63b |
children |
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package de.intevation.flys.client.server; import com.google.gwt.user.server.rpc.RemoteServiceServlet; 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.ThemeListingService; import de.intevation.flys.client.shared.exceptions.ServerException; import de.intevation.flys.client.shared.model.Style; import java.util.HashMap; import java.util.Map; 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; /** * This interface provides a method to list themes filtered by name. * * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> */ public class ThemeListingServiceImpl extends RemoteServiceServlet implements ThemeListingService { private static final Logger logger = Logger.getLogger(ThemeListingServiceImpl.class); private static final String XPATH_THEME_GROUPS = "/themes/themegroup"; /** The error message key that is thrown if an error occured while reading * the supported rivers from server.*/ public static final String ERROR_NO_GROUPS_FOUND = "error_no_groups_found"; public Map<String, Style> list(String locale, String name) throws ServerException { String url = getServletContext().getInitParameter("server-url"); Document doc = XMLUtils.newDocument(); XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( doc, null, null); Element e = ec.create("theme"); ec.addAttr(e, "name", name); doc.appendChild(e); HttpClient client = new HttpClientImpl(url, locale); try { Document res = client.callService(url, "themelisting", doc); NodeList themeGroups = (NodeList) XMLUtils.xpath( res, XPATH_THEME_GROUPS, XPathConstants.NODESET, null); if (themeGroups == null || themeGroups.getLength() == 0) { throw new ServerException(ERROR_NO_GROUPS_FOUND); } int count = themeGroups.getLength(); Map<String, Style> theStyles = new HashMap<String, Style>(count); for (int i = 0; i < count; i++) { Element tmp = (Element)themeGroups.item(i); String groupName = tmp.getAttribute("name"); NodeList theTheme = (NodeList) XMLUtils.xpath( tmp, "theme", XPathConstants.NODESET, null); for (int j = 0; j < theTheme.getLength(); j++) { Element elem = (Element) theTheme.item(j); theStyles.put(groupName, StyleHelper.getStyle(elem)); } } return theStyles; } catch (ConnectionException ce) { logger.error(ce, ce); } throw new ServerException(ERROR_NO_GROUPS_FOUND); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :