Mercurial > dive4elements > river
view gwt-client/src/main/java/org/dive4elements/river/client/server/DischargeInfoServiceImpl.java @ 6135:804e50149d6a
Print the complete collection in parseCollection
This can be extremly helpful as it allows you to debug the full
state of a collection
author | Andre Heinecke <aheinecke@intevation.de> |
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date | Fri, 31 May 2013 15:19:32 +0200 |
parents | ea9eef426962 |
children | 9da2298ae380 |
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/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde * Software engineering by Intevation GmbH * * This file is Free Software under the GNU AGPL (>=v3) * and comes with ABSOLUTELY NO WARRANTY! Check out the * documentation coming with Dive4Elements River for details. */ package org.dive4elements.river.client.server; import java.util.ArrayList; import java.util.List; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.NodeList; import org.apache.log4j.Logger; import com.google.gwt.user.server.rpc.RemoteServiceServlet; import org.dive4elements.artifacts.common.ArtifactNamespaceContext; import org.dive4elements.artifacts.common.utils.XMLUtils; import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException; import org.dive4elements.artifacts.httpclient.http.HttpClient; import org.dive4elements.artifacts.httpclient.http.HttpClientImpl; import org.dive4elements.river.client.shared.exceptions.ServerException; import org.dive4elements.river.client.client.services.DischargeInfoService; import org.dive4elements.river.client.shared.model.DischargeInfoObject; import org.dive4elements.river.client.shared.model.DischargeInfoObjectImpl; /** * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> */ public class DischargeInfoServiceImpl extends RemoteServiceServlet implements DischargeInfoService { private static final Logger logger = Logger.getLogger(DischargeInfoServiceImpl.class); public static final String ERROR_NO_DISCHARGEINFO_FOUND = "error_no_dischargeinfo_found"; public static final String XPATH_DISTANCES = "art:discharges/art:discharge"; public DischargeInfoObject[] getDischargeInfo( String locale, long gauge) throws ServerException { logger.info("DichargeInfoServiceImpl.getDischargeInfo"); String url = getServletContext().getInitParameter("server-url"); Document doc = XMLUtils.newDocument(); XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( doc, ArtifactNamespaceContext.NAMESPACE_URI, ArtifactNamespaceContext.NAMESPACE_PREFIX); Element gaugeEl = ec.create("gauge"); gaugeEl.setTextContent(String.valueOf(gauge)); doc.appendChild(gaugeEl); HttpClient client = new HttpClientImpl(url, locale); try { Document result = client.callService(url, "dischargeinfo", doc); logger.debug("Extract discharge info objects now."); DischargeInfoObject[] objects = extractDischargeInfoObjects(result); if (objects != null && objects.length > 0) { return objects; } } catch (ConnectionException ce) { logger.error(ce, ce); } throw new ServerException(ERROR_NO_DISCHARGEINFO_FOUND); } protected DischargeInfoObject[] extractDischargeInfoObjects( Document result ) throws ServerException { NodeList list = result.getElementsByTagName("discharge"); if (list == null || list.getLength() == 0) { logger.warn("No discharge info found."); throw new ServerException(ERROR_NO_DISCHARGEINFO_FOUND); } int num = list.getLength(); logger.debug("Response contains " + num + " objects."); List<DischargeInfoObject> objects = new ArrayList<DischargeInfoObject>(num); for (int i = 0; i < num; i++) { DischargeInfoObject obj = buildDischargeInfoObject( (Element)list.item(i)); if (obj != null) { objects.add(obj); } } logger.debug("Retrieved " + objects.size() + " discharges."); return (DischargeInfoObject[]) objects.toArray(new DischargeInfoObject[num]); } protected DischargeInfoObject buildDischargeInfoObject(Element node) { String desc = node.getAttribute("description").trim(); String start = node.getAttribute("start").trim(); String end = node.getAttribute("end").trim(); String bfgId = node.getAttribute("bfg-id").trim(); if (start.length() > 0 && end.length() > 0) { try { Integer startYear = Integer.valueOf(start); Integer endYear = Integer.valueOf(end); return new DischargeInfoObjectImpl( desc, startYear, endYear, bfgId); } catch (NumberFormatException nfe) { logger.warn(nfe.getLocalizedMessage()); } } logger.warn("Invalid distance info object found."); return null; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :