Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/model/BlackboardDataFacet.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 | 257d72524249 |
children |
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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 java.util.ArrayList; import java.util.List; import org.dive4elements.artifacts.Artifact; import org.dive4elements.artifacts.CallContext; import org.dive4elements.artifactdatabase.state.Facet; import org.dive4elements.artifactdatabase.state.DefaultFacet; /** * Facet that writes artifact-uuid facet name and facet index on the blackboard, * delivers data if asked so. */ public class BlackboardDataFacet extends DefaultFacet { public BlackboardDataFacet() {} /** Do not instantiate a BlackboardDataFacet, subclass it instead. */ public BlackboardDataFacet(int idx, String name, String description) { super(idx, name, description); } /** Do not instantiate a BlackboardDataFacet, subclass it instead. */ public BlackboardDataFacet(String name, String description) { super(0, name, description); } /** Define key to which to respond when asked for 'blackboard' * (DataProvider)- data. */ public String areaDataKey(Artifact art) { return art.identifier() + ":" + getName() + ":" + getIndex(); } /** Hey, We can ArtifactUUID+:+FacetName+:+FacetIndex (i.e. getData)! */ @Override public List getStaticDataProviderKeys(Artifact art) { List list = new ArrayList(); list.add(areaDataKey(art)); return list; } /** * Can provide whatever getData returns. * @param key will respond on uuid+facetname+index * @param param ignored * @param context ignored * @return whatever getData delivers when asked for the 'right' key. */ @Override public Object provideBlackboardData(Artifact artifact, Object key, Object param, CallContext context ) { if (key.equals(areaDataKey(artifact))) { return getData(artifact, context); } else { return null; } } /** Copy deeply. */ @Override public Facet deepCopy() { BlackboardDataFacet copy = new BlackboardDataFacet(); copy.set(this); return copy; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :