ingo@100: /*
ingo@100:  * Copyright (c) 2010 by Intevation GmbH
ingo@100:  *
ingo@100:  * This program is free software under the LGPL (>=v2.1)
ingo@100:  * Read the file LGPL.txt coming with the software for details
ingo@100:  * or visit http://www.gnu.org/licenses/ if it does not exist.
ingo@100:  */
ingo@100: 
teichmann@475: package org.dive4elements.artifactdatabase.rest;
sascha@72: 
teichmann@475: import org.dive4elements.artifacts.common.utils.XMLUtils;
teichmann@475: import org.dive4elements.artifacts.common.utils.XMLUtils.ElementCreator;
sascha@72: 
teichmann@475: import org.dive4elements.artifacts.ArtifactDatabase;
teichmann@475: import org.dive4elements.artifacts.ArtifactNamespaceContext;
sascha@72: 
tom@570: import org.apache.logging.log4j.Logger;
tom@570: import org.apache.logging.log4j.LogManager;
sascha@72: 
sascha@72: import org.restlet.data.MediaType;
sascha@72: 
sascha@72: import org.restlet.ext.xml.DomRepresentation;
sascha@72: 
sascha@72: import org.restlet.representation.Representation;
sascha@72: 
sascha@72: import org.restlet.resource.ResourceException;
sascha@72: 
sascha@72: import org.w3c.dom.Document;
sascha@72: import org.w3c.dom.Element;
sascha@72: 
sascha@72: /**
sascha@88:  * Resource to list the available service offered by the artifact database.
sascha@88:  *
sascha@77:  * @author <a href="mailto:sascha.teichmann@intevation">Sascha L. Teichmann</a>
sascha@72:  */
sascha@72: public class ServicesResource
sascha@72: extends      BaseResource
sascha@72: {
tom@570:     private static Logger logger = LogManager.getLogger(ServicesResource.class);
sascha@72: 
sascha@88:     /**
sascha@88:      * server URL where to reach the resource.
sascha@88:      */
sascha@72:     public static final String PATH = "/services";
sascha@72: 
sascha@89:     @Override
sascha@72:     protected Representation innerGet()
sascha@72:     throws                   ResourceException
sascha@72:     {
sascha@72:         Document document = XMLUtils.newDocument();
sascha@72: 
sascha@72:         ElementCreator ec = new ElementCreator(
sascha@72:             document,
sascha@72:             ArtifactNamespaceContext.NAMESPACE_URI,
sascha@72:             ArtifactNamespaceContext.NAMESPACE_PREFIX);
sascha@72: 
sascha@72:         ArtifactDatabase db = (ArtifactDatabase)getContext()
sascha@72:             .getAttributes().get("database");
sascha@72: 
sascha@72:         Element root = ec.create("result");
sascha@72:         document.appendChild(root);
sascha@72: 
sascha@72:         Element type = ec.create("type");
sascha@72:         ec.addAttr(type, "name", "service-list");
sascha@72:         root.appendChild(type);
sascha@72: 
sascha@72:         Element factories = ec.create("services");
sascha@72:         root.appendChild(factories);
sascha@72: 
sascha@72:         String [][] factoryNames = db.serviceNamesAndDescriptions();
sascha@72: 
sascha@72:         for (int i = 0; i < factoryNames.length; ++i) {
sascha@72:             String [] nd = factoryNames[i];
sascha@72:             Element factoryElement = ec.create("service");
sascha@72:             ec.addAttr(factoryElement, "name", nd[0]);
sascha@72:             ec.addAttr(factoryElement, "description", nd[1]);
sascha@72:             factories.appendChild(factoryElement);
sascha@72:         }
sascha@72: 
sascha@72:         document.normalizeDocument();
sascha@72: 
sascha@72:         return new DomRepresentation(
sascha@72:             MediaType.APPLICATION_XML, document);
sascha@72:     }
sascha@72: }
sascha@72: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :