Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/states/AreaCreationState.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.river.artifacts.model.AreaFacet; import org.dive4elements.artifactdatabase.state.Facet; import org.dive4elements.river.artifacts.D4EArtifact; import org.dive4elements.river.artifacts.AreaArtifact; import org.dive4elements.river.artifacts.model.FacetTypes; /** Trivial state to create areafacets, no caching. */ public class AreaCreationState extends DefaultState implements FacetTypes { /** The logger that is used in this state. */ private static Logger logger = Logger.getLogger(AreaCreationState.class); /** * From this state can only be continued trivially. */ @Override protected String getUIProvider() { return "continue"; } /** Just reproduce the Facet. */ protected Object compute( D4EArtifact areaArtifact, CallContext cc, String hash, List<Facet> facets, Object old ) { logger.debug("AreaCreationState.compute"); if (facets != null) { AreaArtifact aArt = (AreaArtifact) areaArtifact; facets.add(new AreaFacet(0, aArt.getFacetName(), aArt.getAreaName())); } // TODO use compute to exploit caching strategies. return null; } /** */ @Override public Object computeFeed( D4EArtifact artifact, String hash, CallContext context, List<Facet> facets, Object old ) { return compute((D4EArtifact) artifact, context, hash, facets, old); } /** * */ @Override public Object computeAdvance( D4EArtifact artifact, String hash, CallContext context, List<Facet> facets, Object old ) { return compute((D4EArtifact) artifact, context, hash, facets, old); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :