Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/model/CrossSectionWaterLineFacet.java @ 7471:fff862f4ef76
Experimental caching of datacage recommendations. The respective hook is called a lot and running the datacage over and over again when loading data can be expensive. So the generated recommendations are cached for some time.
Hopefully this improves the overall speed of loading data from the datacage.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Wed, 30 Oct 2013 15:26:21 +0100 |
parents | af13ceeba52a |
children | e4606eae8ea5 |
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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.model; import org.apache.log4j.Logger; import java.util.List; import org.dive4elements.artifacts.Artifact; import org.dive4elements.artifacts.CallContext; import org.dive4elements.artifacts.DataProvider; import org.dive4elements.artifactdatabase.state.Facet; import org.dive4elements.river.artifacts.WaterLineArtifact; import org.dive4elements.river.model.FastCrossSectionLine; import org.dive4elements.river.artifacts.geom.Lines; /** * Facet for Waterlines in Cross Sections. */ public class CrossSectionWaterLineFacet extends BlackboardDataFacet implements FacetTypes { /** Private logger to use. */ private static Logger logger = Logger.getLogger(CrossSectionWaterLineFacet.class); /** Trivial constructor, set (maybe localized) description. */ public CrossSectionWaterLineFacet(int idx, String description) { super(idx, CROSS_SECTION_WATER_LINE, description); } /** * Trivial constructor, set (maybe localized) description. * @param idx Index of this facet. * @param name 'type' of this facet. * @param description (maybe) localized user-visible description. */ public CrossSectionWaterLineFacet(int idx, String name, String description) { super(idx, name, description); } /** * Gets waterline (crossed with cross section) of waterlevel. */ public Object getData(Artifact artifact, CallContext context) { logger.debug("Get data for cross section water line"); List<DataProvider> providers = context. getDataProvider(CrossSectionFacet.BLACKBOARD_CS_MASTER_DATA); if (providers.size() < 1) { logger.warn("Could not find Cross-Section data provider."); return new Lines.LineData(new double[][] {}, 0d, 0d); } Object crossSection = providers.get(0) .provideData(CrossSectionFacet.BLACKBOARD_CS_MASTER_DATA, null, context); Object nextKm = providers.get(0). provideData(CrossSectionFacet.BLACKBOARD_CS_NEXT_KM, null, context); Object prevKm = providers.get(0). provideData(CrossSectionFacet.BLACKBOARD_CS_PREV_KM, null, context); if (prevKm == null) prevKm = new Double(-1d); if (nextKm == null) nextKm = new Double(-1d); if (!(artifact instanceof WaterLineArtifact)) { logger.error("CrossSectionWaterLineFacet needs WaterLineArtifact"); return new Lines.LineData(new double[][] {}, 0d,0d); } WaterLineArtifact lineArtifact = (WaterLineArtifact) artifact; if (crossSection != null) { return lineArtifact.getWaterLines(this.getIndex(), (FastCrossSectionLine) crossSection, (Double) nextKm, (Double) prevKm, context); } else { return new Lines.LineData(new double[][] {}, 0d,0d); } } /** Do a deep copy. */ @Override public Facet deepCopy() { CrossSectionWaterLineFacet copy = new CrossSectionWaterLineFacet( this.getIndex(), this.description); copy.set(this); return copy; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :