另外一个问题是缺少对Lucene的事务控制，把领域模型数据存储到数据库和搜索引擎是有问题的。

Another problem is lack of transactions support in Lucene, making saving the domain model into the database and the search engine problematic.

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在搜索数据库和其他参考应用程序里，这种算法类型相当普遍。

This algorithm type is quite common in search databases and other reference applications.

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这种做法可能在理论上听起来很简捷，但在实践中大量各种不同的数据库结构和可能的搜索词构成了一个棘手的计算挑战。

That approach may sound straightforward in theory, but in practice the vast variety of database structures and possible search terms poses a thorny computational challenge.

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