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 java.io.StringWriter;
  
  import com.aliyun.fastmodel.transform.template.FmlTemplate;
  import com.aliyun.fastmodel.transform.template.exception.FmlTemplateException;
  import freemarker.template.Template;
  import freemarker.template.TemplateException;
  
  /**
   * FreeMarker Template
   *
   * @author panguanjing
   * @date 2020/10/19
   */
  public class FreeMarkerTemplate implements FmlTemplate {
  
      private final Template template;
  
      public FreeMarkerTemplate(Template template) {
          this.template = template;
      }
  
      @Override
      public String process(Object dataModel) {
          StringWriter out = new StringWriter();
          try {
              template.process(dataModel, out);
          } catch (TemplateException e) {
              throw new FmlTemplateException("template Process error", e);
          } catch (IOException e) {
              throw new FmlTemplateException("template IoException", e);
          }
          return out.toString();
      }
  }
  