eu.esdihumboldt.hale.server.templates.war.pages.UpdateTemplatePage.java Source code

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Here is the source code for eu.esdihumboldt.hale.server.templates.war.pages.UpdateTemplatePage.java

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/*
 * Copyright (c) 2013 Data Harmonisation Panel
 * 
 * All rights reserved. This program and the accompanying materials are made
 * available under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution. If not, see <http://www.gnu.org/licenses/>.
 * 
 * Contributors:
 *     Data Harmonisation Panel <http://www.dhpanel.eu>
 */

package eu.esdihumboldt.hale.server.templates.war.pages;

import java.util.Iterator;

import javax.servlet.http.HttpServletResponse;

import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.request.http.flow.AbortWithHttpErrorCodeException;
import org.apache.wicket.request.mapper.parameter.PageParameters;
import org.apache.wicket.util.string.StringValue;

import com.tinkerpop.blueprints.Direction;
import com.tinkerpop.blueprints.Vertex;
import com.tinkerpop.blueprints.impls.orient.OrientGraph;

import de.fhg.igd.slf4jplus.ALogger;
import de.fhg.igd.slf4jplus.ALoggerFactory;
import eu.esdihumboldt.hale.server.db.orient.DatabaseHelper;
import eu.esdihumboldt.hale.server.model.Template;
import eu.esdihumboldt.hale.server.model.User;
import eu.esdihumboldt.hale.server.templates.war.components.TemplateUploadForm;
import eu.esdihumboldt.hale.server.webapp.pages.SecuredPage;
import eu.esdihumboldt.hale.server.webapp.util.PageDescription;
import eu.esdihumboldt.hale.server.webapp.util.UserUtil;
import eu.esdihumboldt.util.blueprints.entities.NonUniqueResultException;

/**
 * Page for updating a template.
 * 
 * @author Simon Templer
 */
@PageDescription(title = "Update Template")
public class UpdateTemplatePage extends SecuredPage {

    private static final long serialVersionUID = 5042784175750862684L;

    private static final ALogger log = ALoggerFactory.getLogger(UpdateTemplatePage.class);

    /**
     * @see SecuredPage#SecuredPage(PageParameters)
     */
    public UpdateTemplatePage(PageParameters parameters) {
        super(parameters);
    }

    @Override
    protected void addControls() {
        StringValue idParam = getPageParameters().get(0);
        if (!idParam.isNull() && !idParam.isEmpty()) {
            String templateId = idParam.toString();

            OrientGraph graph = DatabaseHelper.getGraph();
            try {
                Template template = null;
                try {
                    template = Template.getByTemplateId(graph, templateId);
                } catch (NonUniqueResultException e) {
                    log.error("Duplicate template representation: " + templateId, e);
                }
                if (template != null) {
                    // get associated user
                    Vertex v = template.getV();
                    Iterator<Vertex> owners = v.getVertices(Direction.OUT, "owner").iterator();
                    if (UserUtil.isAdmin() // user is admin
                            // or user is owner
                            || (owners.hasNext()
                                    && UserUtil.getLogin().equals(new User(owners.next(), graph).getLogin()))) {
                        // template name
                        add(new Label("name", template.getName()));
                        // upload form
                        add(new TemplateUploadForm("upload-form", templateId));
                    } else {
                        throw new AbortWithHttpErrorCodeException(HttpServletResponse.SC_FORBIDDEN);
                    }
                } else {
                    throw new AbortWithHttpErrorCodeException(HttpServletResponse.SC_NOT_FOUND,
                            "Template not found.");
                }
            } finally {
                graph.shutdown();
            }
        } else
            throw new AbortWithHttpErrorCodeException(HttpServletResponse.SC_BAD_REQUEST,
                    "Template identifier must be specified.");
    }
}