Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/ThemeListingServiceImpl.java @ 2911:37dce0f2f63b
Removed superfluous import.
flys-client/trunk@4718 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Wed, 20 Jun 2012 08:52:00 +0000 |
parents | cd068ff7966d |
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 :