Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/services/DischargeInfoService.java @ 6061:e9a76ffa0f9a
Use maxOverlap to get the correct gauge for the MainValues
Previously just the first matching gauge was taken even if it's
range ended with the minimum value. This code is clearly intended
to get one gauge for one range so the best match should be taken.
author | Andre Heinecke <aheinecke@intevation.de> |
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date | Wed, 22 May 2013 18:10:48 +0200 |
parents | af13ceeba52a |
children | fe03337c8011 |
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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 ) { if (logger.isDebugEnabled()) { 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); if (gauge == null) { logger.warn("No such gauge found."); return XMLUtils.newDocument(); } 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); logger.debug("# of tables:" + tables.size()); Element all = result.createElement("discharges"); for (DischargeTable dt: tables) { if (dt.getKind() == DischargeTables.MASTER) { continue; } 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) { discharge.setAttribute("end", String.valueOf(stopTime.getTime())); } else { long now = System.currentTimeMillis(); discharge.setAttribute("end", String.valueOf(now)); } String bfgId = dt.getBfgId(); if (bfgId != null) { discharge.setAttribute("bfg-id", bfgId); } all.appendChild(discharge); } result.appendChild(all); return result; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :