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.ServerResource;

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

/**
 * Resource class for the members of an annotation group.
 *
 * @author casties
 *
 */
public class GroupMembersResource extends ServerResource {

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

    private AnnotationStore store;

    /**
     * GET with HTML content type. Shows the members of the group.
     *
     * @param entity
     * @return
     */
    @Get("html")
    public Representation doGetHTML(Representation entity) {
        // id from URI /annotations/groups/{id}/members
        String id = (String) getRequest().getAttributes().get("id");
        logger.debug("group-id=" + id);
        if (id == null || id.isEmpty()) {
            // invalid id
            setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
            return null;
        }
        String result = null;
        store = getAnnotationStore();
        Reference groupsUrl = this.getReference().getParentRef();
        result = "<html><body>\n<h1>Members of group</h1>\n";
        Group group = new Group(id);
        group = (Group) store.getActor(group);
        result += String.format("<p>Group: %s <a href=\"%s\">(%s)</a></p>\n", group.getName(), groupsUrl, group.getId());
        result += "<p>Members:</p>\n";
        result += "<table>";
        List<Person> members = store.getMembersOfGroup(group);
        for (Person p : members) {
            result += String.format("<tr><td>%s</td><td>(%s)</td></tr>\n", p.getName(), p.getIdString());
        }
        result += "</table>\n";
        result += "<form method=\"post\" action=\"\">\n";
        result += "<p>Add new member: <select name=\"new_member\">\n";
        result += String.format("<option value=\"%s\">%s</option>\n", "casties", "casties");
        result += "</select>\n";
        result += "<input type=\"submit\"/>\n";
        result += "</form>\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("AnnotationsUiGroup doPost!");
        // TODO: do authentication
        Form form = new Form(entity);
        String id = form.getFirstValue("id");
        String name = form.getFirstValue("name");
        if (id == null || id.isEmpty()) {
            // invalid id
            setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
            return null;
        }
        String gid = null;
        Group newGroup = new Group(gid, null, name);
        store = getAnnotationStore();
        Actor storedGroup = store.storeActor(newGroup);
        gid = storedGroup.getId();
        // return 303: see other
        setStatus(Status.REDIRECTION_SEE_OTHER);
        // go GET URL for this group
        Reference groupUrl = this.getReference();
        groupUrl.addSegment(gid);
        this.getResponse().setLocationRef(groupUrl);
        return null;
    }

    protected AnnotationStore getAnnotationStore() {
        if (store == null) {
            store = ((BaseRestlet) getApplication()).getAnnotationStore();
        }
        return store;
    }
}
author	casties
date	Sat, 22 Sep 2012 20:12:18 +0200
parents
children	e208a7b1a37a