org.tangram.components.spring.DefaultController.java Source code

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Here is the source code for org.tangram.components.spring.DefaultController.java

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/**
 *
 * Copyright 2011-2014 Martin Goellnitz
 *
 * This program is free software: you can redistribute it and/or modify
 * it 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.tangram.components.spring;

import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import org.tangram.content.Content;
import org.tangram.controller.AbstractRenderingBase;
import org.tangram.link.InternalLinkFactory;
import org.tangram.link.Link;
import org.tangram.view.TargetDescriptor;
import org.tangram.view.Utils;
import org.tangram.view.ViewContext;

/**
 * This controller implementation provides a default URL format
 *
 * /&lt;prefix&gt;/id_&lt;id&gt(/view_&lt;view&gt)
 *
 * and a way to handle those urls passing the content id and optionally the view name to the content and
 * view layers of the framework.
 */
@Controller
public class DefaultController extends AbstractRenderingBase implements InternalLinkFactory {

    private static final Logger LOG = LoggerFactory.getLogger(DefaultController.class);

    @RequestMapping(value = "/id_{id}/view_{view}")
    public ModelAndView render(@PathVariable("id") String id, @PathVariable("view") String view,
            HttpServletRequest request, HttpServletResponse response) {
        try {
            Utils.setPrimaryBrowserLanguageForJstl(request);
            LOG.debug("render() id={} view={}", id, view);
            Content content = beanFactory.getBean(id);
            LOG.debug("render() content={}", content);
            if (content == null) {
                response.sendError(HttpServletResponse.SC_NOT_FOUND,
                        "no content with id " + id + " in repository.");
                return null;
            } // if
            Map<String, Object> model = createModel(new TargetDescriptor(content, view, null), request, response);
            ViewContext viewContext = viewContextFactory.createViewContext(model, view);
            return SpringViewUtilities.createModelAndView(viewContext);
        } catch (Exception e) {
            ViewContext viewContext = viewContextFactory.createViewContext(e, request, response);
            return SpringViewUtilities.createModelAndView(viewContext);
        } // try/catch
    } // render()

    @RequestMapping(value = "/id_{id}")
    public ModelAndView render(@PathVariable("id") String id, HttpServletRequest request,
            HttpServletResponse response) {
        return render(id, null, request, response);
    } // render()

    @Override
    public Link createLink(HttpServletRequest request, HttpServletResponse r, Object bean, String action,
            String view) {
        if (bean instanceof Content) {
            return AbstractRenderingBase.createDefaultLink(bean, action, view);
        } // if
        return null;
    } // createLink()

} // DefaultController