Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/ManualPointsArtifact.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 | 8d5ca5175038 |
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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; import java.awt.geom.Point2D; import java.util.ArrayList; import java.util.List; import org.apache.log4j.Logger; import org.json.JSONArray; import org.json.JSONException; import org.w3c.dom.Document; import org.dive4elements.artifactdatabase.state.Facet; import org.dive4elements.artifacts.Artifact; import org.dive4elements.artifacts.ArtifactFactory; import org.dive4elements.artifacts.CallContext; import org.dive4elements.artifacts.CallMeta; import org.dive4elements.river.artifacts.geom.Lines; import org.dive4elements.river.artifacts.model.FacetTypes; import org.dive4elements.river.artifacts.states.DefaultState; import org.dive4elements.river.model.FastCrossSectionLine; /** * Artifact to store user-added points and water lines. */ public class ManualPointsArtifact extends StaticD4EArtifact implements FacetTypes, WaterLineArtifact { private static final long serialVersionUID = 7096025125474986011L; /** The logger for this class. */ private static Logger logger = Logger.getLogger(ManualPointsArtifact.class); /** The name of the artifact. */ public static final String ARTIFACT_NAME = "manualpoints"; public ManualPointsArtifact() { logger.debug("ManualPointsArtifact.ManualPointsArtifact()"); } /** * Gets called from factory to set things up. */ @Override public void setup( String identifier, ArtifactFactory factory, Object context, CallMeta callMeta, Document data) { logger.debug("ManualPointsArtifact.setup"); super.setup(identifier, factory, context, callMeta, data); initialize(null, context, callMeta); } /** Return the name of this artifact. */ @Override public String getName() { return ARTIFACT_NAME; } /** Access state data storing the jsonstring with points. */ public String getPointsData(String facetName) { return getDataAsString(facetName + ".data"); } /** * Access state data storing the jsonstring with lines. * @param facetName Name of facet or null if the so far * only known case should be picked. * @return (String) value of data element (expect json). */ public String getLinesData(String facetName) { if (facetName == null) return getDataAsString("cross_section.manualpoints.lines"); // TODO .lineS? return getDataAsString(facetName + ".line"); } /** Setup state and facet. */ @Override protected void initialize(Artifact artifact, Object context, CallMeta meta) { logger.debug("ManualPointsArtifact.initialize"); List<Facet> fs = new ArrayList<Facet>(); DefaultState state = (DefaultState) getCurrentState(context); state.computeInit(this, hash(), context, meta, fs); if (!fs.isEmpty()) { logger.debug("Facets to add in ManualPointsArtifact.initialize ."); addFacets(getCurrentStateId(), fs); } else { logger.debug("No facets to add in ManualPointsArtifact.initialize (" + state.getID() + ")."); } } /** * Get value of line at index. * @param index index in json array defining lines. * @return water height of line at given index. */ protected double getLine(int index) { try { JSONArray lines = new JSONArray(getLinesData(null)); JSONArray array = lines.getJSONArray(index); return array.getDouble(0); } catch(JSONException e){ logger.error("Could not decode json for line."); return 0d; } } /** * Get the water line "surface". * @param index index of facets data. * @param csl 'ground' against which to determine water surface. * @param a (ignored in this implementation). * @param b (ignored in this implementation). * @param context (ignored in this implementation). */ @Override public Lines.LineData getWaterLines( int index, FastCrossSectionLine csl, double a, double b, CallContext context ) { List<Point2D> points = csl.getPoints(); return Lines.createWaterLines(points, getLine(index)); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :