Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/states/StaticHYKState.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.states; import java.util.List; import org.apache.log4j.Logger; import org.dive4elements.artifacts.CallContext; import org.dive4elements.artifacts.CallMeta; import org.dive4elements.artifactdatabase.state.Facet; import org.dive4elements.river.artifacts.D4EArtifact; import org.dive4elements.river.artifacts.HYKArtifact; import org.dive4elements.river.artifacts.model.FacetTypes; import org.dive4elements.river.artifacts.model.HYKFacet; import org.dive4elements.river.artifacts.model.HYKFactory; /** * Only state of a HYKArtifact. */ public class StaticHYKState extends DefaultState implements FacetTypes { /** The logger that is used in this state. */ transient private static final Logger logger = Logger.getLogger(StaticHYKState.class); /** * From this state can not be continued. */ @Override protected String getUIProvider() { return "noinput"; } /** * Compute, create Facets, do the same stuff as all the other states do. */ protected Object compute( HYKArtifact hyk, CallMeta metaLocale, String hash, List<Facet> facets, Object old ) { logger.debug("StaticHYKState.compute"); String id = getID(); // Prepare comparison against cached result. List<HYKFactory.Zone> resZones = old instanceof List ? (List<HYKFactory.Zone>)old : null; // TODO Compare against cached object. // Get Zones from HYKFactory List<HYKFactory.Zone> zones = (List<HYKFactory.Zone>) HYKFactory.getHYKs(hyk.getHykId(), hyk.getKm()); if (facets == null) { logger.debug("StaticHYKState.compute no facets"); return zones; } // Spawn Facets. Facet facet = new HYKFacet(0, HYKFactory.getHykName(hyk.getHykId())); facets.add(facet); return zones; } /** * Get data, create the facets. * * @param context Ignored. */ @Override public Object computeFeed( D4EArtifact artifact, String hash, CallContext context, List<Facet> facets, Object old ) { return compute((HYKArtifact) artifact, context.getMeta(), hash, facets, old); } /** * Create the facets. * @param context Ignored. */ @Override public Object computeInit( D4EArtifact artifact, String hash, Object context, CallMeta meta, List<Facet> facets ) { return compute((HYKArtifact) artifact, meta, hash, facets, null); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :