/*

  * $Id: WebappClassTemplateLoader.java 1306435 2012-03-28 15:39:11Z nlebas $

  *

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache License, Version 2.0 (the

  * "License"); you may not use this file except in compliance

  * with the License.  You may obtain a copy of the License at

  *

  * http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an

  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

  * KIND, either express or implied.  See the License for the

  * specific language governing permissions and limitations

  * under the License.

  */

 package org.apache.tiles.request.freemarker.servlet;

 import java.io.IOException;

 import java.io.Reader;

 import javax.servlet.ServletContext;

 import freemarker.cache.ClassTemplateLoader;

 import freemarker.cache.TemplateLoader;

 import freemarker.cache.WebappTemplateLoader;

 /**

  * Delegates loading templates using a {@link WebappTemplateLoader} and, if not

  * found, a {@link ClassTemplateLoader}. The resources are loaded from the

  * webapp root and from the classpath root.

  *

  * @version $Rev: 1306435 $ $Date: 2012-03-29 02:39:11 +1100 (Thu, 29 Mar 2012) $

  */

 public class WebappClassTemplateLoader implements TemplateLoader {

     /**

      * The webapp template loader.

      */

     private WebappTemplateLoader webappTemplateLoader;

     /**

      * The webapp template loader.

      */

     private ClassTemplateLoader classTemplateLoader;

     /**

      * Constructor.

      *

      * @param servletContext The servlet context.

      */

     public WebappClassTemplateLoader(ServletContext servletContext) {

         webappTemplateLoader = new WebappTemplateLoader(servletContext);

         classTemplateLoader = new ClassTemplateLoader(getClass(), "/");

     }

     /** {@inheritDoc} */

     public Object findTemplateSource(String name) throws IOException {

         Object retValue = webappTemplateLoader.findTemplateSource(name);

         if (retValue == null) {

             retValue = classTemplateLoader.findTemplateSource(name);

         }

         return retValue;

     }

     /** {@inheritDoc} */

     public void closeTemplateSource(Object templateSource) throws IOException {

         webappTemplateLoader.closeTemplateSource(templateSource);

     }

     /** {@inheritDoc} */

     public long getLastModified(Object templateSource) {

         return webappTemplateLoader.getLastModified(templateSource);

     }

     /** {@inheritDoc} */

     public Reader getReader(Object templateSource, String encoding)

             throws IOException {

         return webappTemplateLoader.getReader(templateSource, encoding);

     }

 }