Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/services/DischargeInfoService.java @ 5868:35b2d86c3fb5
River artifacts: Renamed FLYSService to D4EService.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Sun, 28 Apr 2013 15:26:59 +0200 |
parents | 4897a58c8746 |
children | 0c61dba8c0de |
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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.artifacts.services; import java.util.Collections; import java.util.List; import java.util.Date; import org.apache.log4j.Logger; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.dive4elements.artifacts.CallMeta; import org.dive4elements.artifacts.GlobalContext; import org.dive4elements.artifacts.common.ArtifactNamespaceContext; import org.dive4elements.artifacts.common.utils.XMLUtils; import org.dive4elements.river.artifacts.model.DischargeTables; import org.dive4elements.river.model.Gauge; import org.dive4elements.river.model.DischargeTable; import org.dive4elements.river.model.TimeInterval; /** * This service provides information about discharges at a defined gauge. * * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> */ public class DischargeInfoService extends D4EService { /** The logger used in this service. */ private static Logger logger = Logger.getLogger(DischargeInfoService.class); public static final String GAUGE_XPATH = "/art:gauge/text()"; public DischargeInfoService() { } @Override public Document doProcess( Document data, GlobalContext globalContext, CallMeta callMeta ) { logger.debug("DischargeInfoService.process"); logger.debug(XMLUtils.toString(data)); String gaugeNumber = XMLUtils.xpathString( data, GAUGE_XPATH, ArtifactNamespaceContext.INSTANCE); if(gaugeNumber == null || (gaugeNumber = gaugeNumber.trim()).length() == 0) { logger.warn("No gauge specified. Cannot return discharge info."); return XMLUtils.newDocument(); } logger.debug("Getting discharge for gauge: " + gaugeNumber); long gn; try { gn = Long.parseLong(gaugeNumber); } catch (NumberFormatException nfe) { logger.warn("Invalid gauge number. Cannot return discharg info."); return XMLUtils.newDocument(); } Gauge gauge = Gauge.getGaugeByOfficialNumber(gn); logger.debug("Found gauge: " + gauge.getName()); return buildDocument(gauge); } protected Document buildDocument(Gauge gauge) { Document result = XMLUtils.newDocument(); List<DischargeTable> tables =gauge.getDischargeTables(); Collections.sort(tables); Element all = result.createElement("discharges"); for (DischargeTable dt: tables) { Element discharge = result.createElement("discharge"); discharge.setAttribute("description", dt.getDescription()); // Get time interval. TimeInterval ti = dt.getTimeInterval(); if (ti == null) { logger.warn("DischargeTable has no TimeInterval set!"); continue; } Date startTime = ti.getStartTime(); Date stopTime = ti.getStopTime(); if (startTime != null) { discharge.setAttribute("start", String.valueOf(startTime.getTime())); } else { continue; } if (stopTime != null && dt.getKind() != DischargeTables.MASTER) { discharge.setAttribute("end", String.valueOf(stopTime.getTime())); } else if (dt.getKind() == DischargeTables.MASTER) { long now = System.currentTimeMillis(); discharge.setAttribute("end", String.valueOf(now)); } else { continue; } all.appendChild(discharge); } result.appendChild(all); return result; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :