ElasticSearch使用嵌套日期范围进行高级评分，今天＆gt;明天＆gt;昨天

Question

这是ES中的数据模型：

{
  id: 1,
  dateRanges: [
    { from: 2014-01-01, to: 2014-01-05 },
    { from: 2014-01-08, to: 2014-01-10 },
    ...
  ]
}

现在我想根据当前日期对我的文档进行评分。伪代码：

SCORE = 
  if( today IS IN any dateRange ) {
    return MAX_VALUE;
  } else if( today < any dateRange.from ) {
    dateRange.from = lowest dateRange.from, which is > today;
    return 1 / ( dateRange.from - today );
  } else {
    dateRange.to = highest dateRange.to, which is < today;
    return dateRange.to - today;
  }

---

实施例

id | dateRange1               | dateRange2               | ...
-------------------------------------------------------------------
1  | 2014-01-01 to 2014-01-10 | 2014-01-12 to 2014-01-13 | 
2  | 2014-01-03 to 2014-01-03 |                          |
3  | 2014-01-01 to 2014-01-02 | 2014-01-10 to 2014-01-15 |

today = 2014-01-11

结果应按此顺序排列：3 1 2

原因：

• 3得分最高，因为today至少在一个日期范围内
• 1获得第二高的得分，因为它至少有一个日期范围dateRange.from > today
• 2得分最低，因为其所有日期范围均为dateRange.to < today

---

有谁知道怎么做？

感谢您的帮助:)