Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/services/ThemeListingService.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.services; import java.util.List; import org.apache.log4j.Logger; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.dive4elements.artifacts.CallMeta; import org.dive4elements.artifacts.GlobalContext; import org.dive4elements.artifacts.common.utils.XMLUtils; import org.dive4elements.river.themes.Theme; import org.dive4elements.river.themes.ThemeGroup; import org.dive4elements.river.themes.ThemeFactory; import org.dive4elements.river.artifacts.context.RiverContext; /** * This service provides a list of themes filtered by the theme name. * * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> */ public class ThemeListingService extends D4EService { /** The logger used in this service.*/ private static Logger logger = Logger.getLogger(ThemeListingService.class); private static final String XPATH_THEME_NAME = "/theme/@name"; protected Document doProcess( Document data, GlobalContext context, CallMeta callMeta ) { logger.debug("ThemeListingService.process"); String name = XMLUtils.xpathString(data, XPATH_THEME_NAME, null); if (name == null) { logger.warn("No theme name provided."); } Document result = XMLUtils.newDocument(); XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( result, null, null); List<ThemeGroup> tgs = ThemeFactory.getThemeGroups((RiverContext) context); Element te = ec.create("themes"); for (ThemeGroup tg: tgs) { Element elem = ec.create("themegroup"); if (tg.getName().equals("virtual")) { continue; } ec.addAttr(elem, "name", tg.getName()); Theme theme = tg.getThemeByName(name); Document d = theme.toXML(); Node imported = result.importNode(d.getDocumentElement(), true); elem.appendChild(imported); te.appendChild(elem); } result.appendChild(te); return result; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :