content: /*
   * Copyright 2021-2022 Alibaba Group Holding Ltd.
   *
   *    Licensed 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 com.aliyun.fastmodel.transform.template.freemarker;
  
  import java.io.IOException;
  
  import com.aliyun.fastmodel.transform.template.FmlTemplate;
  import com.aliyun.fastmodel.transform.template.FmlTemplateFactory;
  import com.aliyun.fastmodel.transform.template.exception.FmlTemplateException;
  import freemarker.cache.ClassTemplateLoader;
  import freemarker.template.Configuration;
  import freemarker.template.Template;
  
  /**
   * Desc:
   *
   * @author panguanjing
   * @date 2020/10/19
   */
  public class FreeMarkerTemplateFactoryImpl implements FmlTemplateFactory {
      private static final Configuration CONFIGURATION = new Configuration(
          Configuration.DEFAULT_INCOMPATIBLE_IMPROVEMENTS);
  
      private static Template get(String name) throws IOException {
          CONFIGURATION.setLogTemplateExceptions(true);
          ClassTemplateLoader classTemplateLoader = new ClassTemplateLoader(FmlTemplateFactory.class, "/");
          CONFIGURATION.setTemplateLoader(classTemplateLoader);
          return CONFIGURATION.getTemplate(name);
      }
  
      @Override
      public FmlTemplate getTemplate(String relativePath) throws FmlTemplateException {
          try {
              Template f = get(relativePath);
              return new FreeMarkerTemplate(f);
          } catch (Exception e) {
              throw new FmlTemplateException("getTemplate Occur Exception:" + relativePath, e);
          }
      }
  }
  