/*
    * Copyright 2012-2017 CodeLibs Project and the Others.
    *
    * 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 org.codelibs.fess.util;
  
  import java.util.Collection;
  import java.util.List;
  import java.util.stream.Collectors;
  
  import org.codelibs.core.beans.util.BeanUtil;
  import org.dbflute.Entity;
  import org.lastaflute.web.response.render.RenderData;
  
  public class RenderDataUtil {
  
      public static void register(final RenderData data, final String key, final Object value) {
          if (value == null) {
              return;
          } else if (value instanceof Entity) {
              data.register(key, BeanUtil.copyBeanToNewMap(value));
          } else if (value instanceof Collection<?>) {
              final Collection<?> coll = ((Collection<?>) value);
              if (!coll.isEmpty()) {
                  // care performance for List that the most frequent pattern
                  final Object first = coll instanceof List<?> ? ((List<?>) coll).get(0) : coll.iterator().next();
                  if (first instanceof Entity) {
                      data.register(key, coll.stream().map(e -> BeanUtil.copyBeanToNewMap(e)).collect(Collectors.toList()));
                      return;
                  }
              }
              data.register(key, value);
          } else {
              data.register(key, value);
          }
      }
  
  }