001/*
002 * This library is part of OpenCms -
003 * the Open Source Content Management System
004 *
005 * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com)
006 *
007 * This library is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * This library is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015 * Lesser General Public License for more details.
016 *
017 * For further information about Alkacon Software, please see the
018 * company website: http://www.alkacon.com
019 *
020 * For further information about OpenCms, please see the
021 * project website: http://www.opencms.org
022 *
023 * You should have received a copy of the GNU Lesser General Public
024 * License along with this library; if not, write to the Free Software
025 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
026 */
027
028package org.opencms.xml.xml2json.handler;
029
030import org.opencms.file.types.CmsResourceTypeXmlContainerPage;
031import org.opencms.json.JSONObject;
032import org.opencms.main.CmsLog;
033import org.opencms.xml.xml2json.CmsJsonRequest;
034import org.opencms.xml.xml2json.CmsJsonResult;
035import org.opencms.xml.xml2json.document.CmsJsonDocumentContainerPage;
036
037import javax.servlet.http.HttpServletResponse;
038
039import org.apache.commons.logging.Log;
040
041/**
042 * JSON handler for rendering a container page as JSON.
043 */
044public class CmsJsonHandlerContainerPage implements I_CmsJsonHandler {
045
046    /** Logger instance for this class. */
047    private static final Log LOG = CmsLog.getLog(CmsJsonHandlerContainerPage.class);
048
049    /**
050     * @see org.opencms.xml.xml2json.handler.I_CmsJsonHandler#getOrder()
051     */
052    public double getOrder() {
053
054        return 400;
055    }
056
057    /**
058     * @see org.opencms.xml.xml2json.handler.I_CmsJsonHandler#matches(org.opencms.xml.xml2json.handler.CmsJsonHandlerContext)
059     */
060    public boolean matches(CmsJsonHandlerContext context) {
061
062        return CmsResourceTypeXmlContainerPage.isContainerPage(context.getResource());
063    }
064
065    /**
066     * @see org.opencms.xml.xml2json.handler.I_CmsJsonHandler#renderJson(org.opencms.xml.xml2json.handler.CmsJsonHandlerContext)
067     */
068    public CmsJsonResult renderJson(CmsJsonHandlerContext context) {
069
070        try {
071            CmsJsonRequest jsonRequest = new CmsJsonRequest(context, this);
072            jsonRequest.validate();
073            if (jsonRequest.hasErrors()) {
074                return new CmsJsonResult(jsonRequest.getErrorsAsJson(), HttpServletResponse.SC_BAD_REQUEST);
075            }
076            CmsJsonDocumentContainerPage jsonDocument = new CmsJsonDocumentContainerPage(
077                jsonRequest,
078                context.getContent());
079            return new CmsJsonResult(jsonDocument.getJson(), HttpServletResponse.SC_OK);
080        } catch (Exception e) {
081            LOG.error(e.getLocalizedMessage(), e);
082            return new CmsJsonResult(
083                JSONObject.quote(e.getLocalizedMessage()),
084                HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
085        }
086    }
087
088}