Mercurial > hg > AnnotationManagerN4J

/**
 *
 */
package de.mpiwg.itgroup.annotations.restlet.annotations_ui;

import java.util.List;

import org.apache.log4j.Logger;
import org.restlet.data.Form;
import org.restlet.data.MediaType;
import org.restlet.data.Reference;
import org.restlet.data.Status;
import org.restlet.representation.Representation;
import org.restlet.representation.StringRepresentation;
import org.restlet.resource.Get;
import org.restlet.resource.Post;
import org.restlet.resource.ResourceException;
import org.restlet.resource.ServerResource;

import de.mpiwg.itgroup.annotations.Actor;
import de.mpiwg.itgroup.annotations.Person;
import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore;
import de.mpiwg.itgroup.annotations.restlet.BaseRestlet;

/**
 * Resource class for the list of annotation users (Person class).
 *
 * @author casties
 *
 */
public class PersonsResource extends ServerResource {

    public static Logger logger = Logger.getLogger(PersonsResource.class);

    private AnnotationStore store;

    @Override
    protected void doInit() throws ResourceException {
        super.doInit();
        // get store instance
        if (store == null) {
            store = ((BaseRestlet) getApplication()).getAnnotationStore();
        }
    }

    /**
     * GET with HTML content type. Lists all persons.
     *
     * @param entity
     * @return
     */
    @Get("html")
    public Representation doGetHTML(Representation entity) {
        String result = null;
        // get form parameter
        Form f = this.getQuery();
        String form = f.getFirstValue("form");
        if (form != null && form.equals("new_person")) {
            // output new group form
            result = "<html><body>\n";
            result += "<h1>New person</h1>\n";
            result += String.format("<p><a href=\"%s\">All persons</a></p>", this.getReference());
            result += String.format("<form method=\"post\" action=\"%s\">\n", this.getReference().getHierarchicalPart());
            result += "<table>";
            result += "<tr><td><b>id</b></td><td><input type=\"text\" name=\"id\"/></td></tr>\n";
            result += "<tr><td><b>name</b></td><td><input type=\"text\" name=\"name\"/></td></tr>\n";
            result += "</table>\n";
            result += "<p><input type=\"submit\"/></p>\n";
            result += "</form>\n</body>\n</html>";
        } else {
            // list all groups
            result = "<html><body>\n<h1>Persons</h1>\n<table>";
            result += "<tr><th>id</th><th>name</th><th>uri</th></tr>";
            List<Person> persons = store.getPersons("uri", "*");
            for (Person person : persons) {
                Reference url = this.getReference().clone();
                url.addSegment(person.getId());
                result += String.format("<tr><td><a href=\"%s\">%s</a></td><td>%s</td><td>%s</td></tr>\n", url,
                        person.getIdString(), person.getName(), person.getUri());
            }
            result += "</table>\n";
            result += "<p><a href=\"?form=new_person\">Add new person</a></p>\n";
            result += "</body>\n</html>";
        }
        return new StringRepresentation(result, MediaType.TEXT_HTML);
    }

    /**
     * POST creates a new Group.
     *
     * @return
     */
    @Post
    public Representation doPost(Representation entity) {
        logger.debug("PersonsResource doPost!");
        // TODO: do authentication
        Form form = new Form(entity);
        String id = form.getFirstValue("id");
        if (id == null || id.isEmpty() || id.matches("\\W")) {
            // invalid id
            setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
            return null;
        }
        String name = form.getFirstValue("name");
        if (name == null || name.isEmpty()) {
            name = ((BaseRestlet) getApplication()).getFullNameFromLdap(id);
        }
        String uri = form.getFirstValue("uri");
        if (uri != null && uri.isEmpty()) uri = null;
        Person newPerson = new Person(id, uri, name);
        Actor storedPerson = store.storeActor(newPerson);
        id = storedPerson.getId();
        // return 303: see other
        setStatus(Status.REDIRECTION_SEE_OTHER);
        // go GET URL for this person
        Reference url = this.getReference().clone();
        url.addSegment(id);
        this.getResponse().setLocationRef(url);
        return null;
    }

}
author	casties
date	Thu, 27 Sep 2012 17:12:08 +0200
parents	707902d468f6
children	c0dd5314bada