001 package 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
024 import org.apache.commons.lang.StringUtils;
025 import org.apache.turbine.services.template.TemplateEngineService;
026 import org.apache.turbine.services.template.TemplateService;
027 import org.apache.turbine.services.template.TurbineTemplate;
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 1078552 2011-03-06 19:58:46Z tv $
036 */
037
038 public 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 TemplateEngineService tes =
066 TurbineTemplate.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 StringBuffer testPath = new StringBuffer();
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