Mercurial > dive4elements > framework
view artifact-database/src/main/java/de/intevation/artifactdatabase/rest/BaseResource.java @ 292:39c0ff00d188
Introduced a hook concept - currently used for 'post-feed' and 'post-advance'.
artifacts/trunk@2327 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Wed, 13 Jul 2011 13:12:08 +0000 |
parents | 320a81983c8d |
children |
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/* * Copyright (c) 2010 by Intevation GmbH * * This program is free software under the LGPL (>=v2.1) * Read the file LGPL.txt coming with the software for details * or visit http://www.gnu.org/licenses/ if it does not exist. */ package de.intevation.artifactdatabase.rest; import de.intevation.artifactdatabase.DefaultCallMeta; import de.intevation.artifactdatabase.DefaultPreferredLocale; import de.intevation.artifacts.ArtifactDatabase; import de.intevation.artifacts.CallMeta; import de.intevation.artifacts.PreferredLocale; import java.util.List; import org.apache.log4j.Logger; import org.restlet.data.ClientInfo; import org.restlet.data.Language; import org.restlet.data.Preference; import org.restlet.representation.Representation; import org.restlet.resource.ResourceException; import org.restlet.resource.ServerResource; /** * Base class for the resources of REST interface of the artifact database. * Primarily used to unify the logging. * @author <a href="mailto:sascha.teichmann@intevation">Sascha L. Teichmann</a> */ public class BaseResource extends ServerResource { private static Logger logger = Logger.getLogger(BaseResource.class); /** * Default constructor. */ public BaseResource() { } /** * Overrides the post method of ServerResource to handle some * exceptions and to the required logging. * The call bridges to #innerPost(Representation) which * should be overwitten by the subclasses to do the real * request processing. * @param requestRepr The incoming represention of the HTTP request. * @return The representation produced by #innerPost(Representation). * @throws ResourceException Thrown if something went wrong during * request processing. */ @Override protected Representation post(Representation requestRepr) throws ResourceException { try { return innerPost(requestRepr); } catch (ResourceException re) { throw re; } catch (RuntimeException re) { logger.error(re.getLocalizedMessage(), re); throw re; } } /** * Trivial implementation of innerPost() which is called by * #post(Representation) which simply calls super.post(Representation). * This should be overwritten by subclasses which need POST support. * @param requestRepr The incoming representation of the request. * @return The representation produced by super.post(Representation). * @throws ResourceException Thrown if something went wrong during * request processing. */ protected Representation innerPost(Representation requestRepr) throws ResourceException { return super.post(requestRepr); } /** * Wrapper around get() of the super class to handle some exceptions * and do the corresponing logging. The call is bridged to #innerGet() * which should be overwritten by subclasses. * @return The representation produced by #innerGet() * @throws ResourceException Thrown if something went wrong during * request processing. */ @Override protected Representation get() throws ResourceException { try { return innerGet(); } catch (ResourceException re) { throw re; } catch (RuntimeException re) { logger.error(re.getLocalizedMessage(), re); throw re; } } /** * Trivial implementaion of innerGet() which simply calls * super.get() to produce some output representation. This method * should be overwritten by subclasses which need GET support. * @return The representation produced by super.get(). * @throws ResourceException Thrown if something went wrong during * request processing. */ protected Representation innerGet() throws ResourceException { return super.get(); } /** * Returns meta information (preferred languages et. al.) * of the current HTTP request. * @return the meta information */ protected CallMeta getCallMeta() { ClientInfo clientInfo = getClientInfo(); List<Preference<Language>> pl = clientInfo.getAcceptedLanguages(); PreferredLocale [] languages = new PreferredLocale[pl.size()]; int index = 0; for (Preference<Language> p: pl) { String lang = p.getMetadata().getName(); float quality = p.getQuality(); languages[index++] = new DefaultPreferredLocale(lang, quality); } return new DefaultCallMeta(languages); } /** * Returns the artifact database stored in the context of the REST * application. * * @return the artifact database. */ protected ArtifactDatabase getArtifactDatabase() { return (ArtifactDatabase) getContext().getAttributes().get("database"); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :