content: /*
   * Copyright (C) 2010-2101 Alibaba Group Holding Limited.
   *
   * 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.alibaba.otter.manager.web.home.module.screen;
  
  import java.util.List;
  
  import javax.annotation.Resource;
  
  import org.springframework.util.CollectionUtils;
  
  import com.alibaba.citrus.turbine.Context;
  import com.alibaba.citrus.turbine.dataresolver.Param;
  import com.alibaba.otter.manager.biz.config.channel.ChannelService;
  import com.alibaba.otter.manager.biz.config.datamediapair.DataMediaPairService;
  import com.alibaba.otter.shared.common.model.config.channel.Channel;
  import com.alibaba.otter.shared.common.model.config.data.ColumnGroup;
  import com.alibaba.otter.shared.common.model.config.data.ColumnPair;
  import com.alibaba.otter.shared.common.model.config.data.DataMediaPair;
  
  public class DataMediaPairInfo {
  
      @Resource(name = "channelService")
      private ChannelService       channelService;
  
      @Resource(name = "dataMediaPairService")
      private DataMediaPairService dataMediaPairService;
  
      public void execute(@Param("dataMediaPairId") Long dataMediaPairId, Context context) throws Exception {
          DataMediaPair dataMediaPair = dataMediaPairService.findById(dataMediaPairId);
          Channel channel = channelService.findByPipelineId(dataMediaPair.getPipelineId());
  
          List<ColumnPair> columnPairs = dataMediaPair.getColumnPairs();
          List<ColumnGroup> columnGroups = dataMediaPair.getColumnGroups();
          // 暂时策略，只拿出list的第一个Group
          ColumnGroup columnGroup = new ColumnGroup();
          if (!CollectionUtils.isEmpty(columnGroups)) {
              columnGroup = columnGroups.get(0);
          }
  
          context.put("dataMediaPair", dataMediaPair);
          context.put("columnGroup", columnGroup);
          context.put("columnPairs", columnPairs);
          context.put("channelId", channel.getId());
      }
  }
  