    001package org.apache.turbine.services.template.mapper;
    002
    003
    004/*
    005 * Licensed to the Apache Software Foundation (ASF) under one
    006 * or more contributor license agreements.  See the NOTICE file
    007 * distributed with this work for additional information
    008 * regarding copyright ownership.  The ASF licenses this file
    009 * to you under the Apache License, Version 2.0 (the
    010 * "License"); you may not use this file except in compliance
    011 * with the License.  You may obtain a copy of the License at
    012 *
    013 *   http://www.apache.org/licenses/LICENSE-2.0
    014 *
    015 * Unless required by applicable law or agreed to in writing,
    016 * software distributed under the License is distributed on an
    017 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    018 * KIND, either express or implied.  See the License for the
    019 * specific language governing permissions and limitations
    020 * under the License.
    021 */
    022
    023
    024import org.apache.commons.lang.StringUtils;
    025import org.apache.turbine.services.TurbineServices;
    026import org.apache.turbine.services.template.TemplateEngineService;
    027import org.apache.turbine.services.template.TemplateService;
    028
    029/**
    030 * This is a pretty simple mapper which returns template pathes for
    031 * a supplied template name. This path can be used by the TemplateEngine
    032 * to access a certain resource to actually render the template.
    033 *
    034 * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
    035 * @version $Id: ScreenTemplateMapper.java 1723699 2016-01-08 11:29:21Z tv $
    036 */
    037
    038public class ScreenTemplateMapper
    039    extends BaseTemplateMapper
    040    implements Mapper
    041{
    042    /**
    043     * Default C'tor. If you use this C'tor, you must use
    044     * the bean setter to set the various properties needed for
    045     * this mapper before first usage.
    046     */
    047    public ScreenTemplateMapper()
    048    {
    049        super();
    050    }
    051
    052    /**
    053     * Check, whether the provided name exists. Returns null
    054     * if the screen does not exist.
    055     *
    056     * @param template The template name.
    057     * @return The matching screen name.
    058     */
    059    @Override
    060    public String doMapping(String template)
    061    {
    062        String [] components = StringUtils.split(template, String.valueOf(TemplateService.TEMPLATE_PARTS_SEPARATOR));
    063
    064        // Last element decides, which template Service to use...
    065        TemplateService templateService = (TemplateService)TurbineServices.getInstance().getService(TemplateService.SERVICE_NAME);
    066        TemplateEngineService tes = templateService.getTemplateEngineService(components[components.length - 1]);
    067
    068        String templatePackage = StringUtils.join(components, String.valueOf(separator));
    069
    070        // But the Templating service must look for the name with prefix
    071        StringBuilder testPath = new StringBuilder();
    072        if (StringUtils.isNotEmpty(prefix))
    073        {
    074            testPath.append(prefix);
    075            testPath.append(separator);
    076        }
    077        testPath.append(templatePackage);
    078
    079        return (tes != null && tes.templateExists(testPath.toString()))
    080            ? templatePackage
    081            : null;
    082    }
    083}
    084
    085
    086
    087