content: /**
   * 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 com.alibaba.jstorm.elasticsearch.common;
  
  import java.io.Serializable;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  public class EsOutputDeclarer implements Serializable {
  
    private static final long serialVersionUID = 8273553454942900376L;
    
    private List<String> fields = new ArrayList<String>();
  
    public EsOutputDeclarer addField(String... names) {
      for (String name : names) {
        fields.add(name);
      }
      return this;
    }
  
    public String[] getFields() {
      return fields.toArray(new String[0]);
    }
  
    public List<Object> getValues(Map<String, Object> source) {
      List<Object> values = new ArrayList<Object>();
      for (String field : fields) {
        values.add(source.get(field));
      }
      return values;
    }
    
  }
  