Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/StaticD4EArtifact.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> |
---|---|
date | Wed, 30 Oct 2013 15:26:21 +0100 |
parents | 760ea7f08455 |
children | 8d5ca5175038 |
line wrap: on
line source
/* 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.util.Collection; import java.util.List; import org.apache.log4j.Logger; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.dive4elements.artifacts.ArtifactNamespaceContext; import org.dive4elements.artifacts.CallContext; import org.dive4elements.artifacts.ArtifactFactory; import org.dive4elements.artifacts.CallMeta; import org.dive4elements.artifactdatabase.data.StateData; import org.dive4elements.artifactdatabase.ProtocolUtils; import org.dive4elements.artifactdatabase.state.Facet; import org.dive4elements.artifactdatabase.state.Output; import org.dive4elements.artifactdatabase.state.State; import org.dive4elements.artifacts.common.utils.XMLUtils; import org.dive4elements.artifacts.common.utils.XMLUtils.ElementCreator; /** * A basic D4EArtifact. */ public abstract class StaticD4EArtifact extends D4EArtifact { /** Private logger. */ private static final Logger logger = Logger.getLogger(StaticD4EArtifact.class); /** * Create description document which includes outputmodes. * @param data ignored. */ @Override public Document describe(Document data, CallContext cc) { logger.debug("Describe artifact: " + identifier()); Document desc = XMLUtils.newDocument(); ElementCreator creator = new ElementCreator( desc, ArtifactNamespaceContext.NAMESPACE_URI, ArtifactNamespaceContext.NAMESPACE_PREFIX); Element root = ProtocolUtils.createRootNode(creator); desc.appendChild(root); Element name = ProtocolUtils.createArtNode( creator, "name", new String[] { "value" }, new String[] { getName() }); root.appendChild(name); ProtocolUtils.appendDescribeHeader(creator, root, identifier(), hash()); root.appendChild(createOutputModes(cc, desc, creator)); // Add the data to an anonymous state. Collection<StateData> datas = getAllData(); if (datas.size() > 0) { Element ui = creator.create("ui"); Element staticE = creator.create("static"); Element state = creator.create("state"); for (StateData dataItem : datas) { Element itemelent = creator.create("data"); creator.addAttr(itemelent, "name", dataItem.getName(), true); creator.addAttr(itemelent, "type", dataItem.getType(), true); Element valuement = creator.create("item"); creator.addAttr(valuement, "label", dataItem.getDescription(), true); creator.addAttr(valuement, "value", dataItem.getValue().toString(), true); itemelent.appendChild(valuement); state.appendChild(itemelent); } ui.appendChild(staticE); staticE.appendChild(state); root.appendChild(ui); } return desc; } protected Element createOutputModes( CallContext cc, Document doc, ElementCreator creator) { logger.debug("createOutputModes"); Element outs = ProtocolUtils.createArtNode( creator, "outputmodes", null, null); State state = getCurrentState(cc); logger.debug("Current state is " + state.getID()); List<Output> list = state.getOutputs(); if (list != null && list.size() > 0) { List<Facet> fs = getFacets(state.getID()); if (fs != null && fs.size() > 0) { List<Output> generated = generateOutputs(list, fs); logger.debug("Found " + fs.size() + " current facets."); if (!generated.isEmpty()) { ProtocolUtils.appendOutputModes( doc, outs, generated); } } else { logger.debug("No facets found for the current state."); } } return outs; } @Override public void setup( String identifier, ArtifactFactory factory, Object context, CallMeta callMeta, Document data) { logger.debug("StaticD4EArtifact.setup"); super.setup(identifier, factory, context, callMeta, data); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :