/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.clerezza.platform.concepts.core;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.List;
import javax.ws.rs.FormParam;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import javax.ws.rs.core.UriInfo;
import org.apache.clerezza.jaxrs.utils.RedirectUtil;
import org.apache.clerezza.platform.graphprovider.content.ContentGraphProvider;
import org.apache.clerezza.platform.typerendering.scalaserverpages.ScalaServerPagesService;
import org.apache.clerezza.rdf.core.UriRef;
import org.apache.clerezza.rdf.ontologies.DCTERMS;
import org.apache.clerezza.rdf.ontologies.RDFS;
import org.apache.clerezza.rdf.utils.GraphNode;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.Service;
import org.osgi.framework.BundleContext;
import org.osgi.service.component.ComponentContext;
/**
* This JAX-RS resource can be used for adding concepts to a resource.
*
* The URI path of this service is /concepts/tagger.
*
* @author tio
*/
@Component
@Service(Object.class)
@Property(name = "javax.ws.rs", boolValue = true)
@Path("/concepts/tagger/")
public class ResourceTagger {
@Reference
protected ContentGraphProvider cgProvider;
@Reference
private ScalaServerPagesService scalaServerPagesService;
protected void activate(ComponentContext context)
throws URISyntaxException {
BundleContext bundleContext = context.getBundleContext();
URL template = getClass().getResource("concept-existing-subjects.ssp");
scalaServerPagesService.registerScalaServerPage(
template,
RDFS.Resource, "concept-existing-subjects-naked",
MediaType.APPLICATION_XHTML_XML_TYPE, bundleContext);
template = getClass().getResource("concept-tagging.ssp");
scalaServerPagesService.registerScalaServerPage(
template,
RDFS.Resource, "concept-tagging-naked",
MediaType.APPLICATION_XHTML_XML_TYPE, bundleContext);
template = getClass().getResource("concept-find-create.ssp");
scalaServerPagesService.registerScalaServerPage(
template,
RDFS.Resource, "concept-find-create-naked",
MediaType.APPLICATION_XHTML_XML_TYPE, bundleContext);
template = getClass().getResource("selected-concepts.ssp");
scalaServerPagesService.registerScalaServerPage(
template,
RDFS.Resource, "selectedconcepts-naked",
MediaType.APPLICATION_XHTML_XML_TYPE, bundleContext);
}
/**
* Adds concepts to a resource. If parameters uri and
* concepts are not defined a response with code BAD_REQUEST is returned. If
* the relation is succefully added a redirect to /concepts/generic-resource with
* the UriRef of the resource as parameter.
*
* @param uri specifies the uri of a resource
* @param concepts specifies a list of concept uris.
*
* @return
* A Response
*/
@POST
@Path("set")
public Response updateConcepts(@FormParam("uri") UriRef uri,
@FormParam("concepts") List<String> concepts,
@Context UriInfo uriInfo) {
if (uri != null) {
GraphNode node = new GraphNode(uri, cgProvider.getContentGraph());
node.deleteProperties(DCTERMS.subject);
if(concepts != null) {
for (String subject : concepts) {
node.addProperty(DCTERMS.subject, new UriRef(subject));
}
}
} else {
throw new WebApplicationException(Response.status(
Status.BAD_REQUEST).entity("No resource uri defined.").build());
}
return RedirectUtil.createSeeOtherResponse("/concepts/generic-resource?uri=" +
uri.getUnicodeString(), uriInfo);
}
}