Lucene Field.Store.YES与Field.Store.NO [英] Lucene Field.Store.YES versus Field.Store.NO

问题描述

请问有人在什么情况下可以使用Field.Store.NO代替Field.Store.YES吗?我对Lucene非常陌生.我正在尝试创建一个文档.根据我的基本知识，我正在做

Will someone please explain under what circumstance I may use Field.Store.NO instead of Field.Store.YES? I am extremely new to Lucene. And I am trying to create a document. Per my basic knowledge, I am doing

doc.add(new StringField(fieldNameA,fieldValueA,Field.Store.YES));
doc.add(new TextField(fieldNameB,fieldValueB,Field.Store.YES));

推荐答案

可以使用两种基本方法将文档写入Lucene.

There are two basic ways a document can be written into Lucene.

• 已建立索引-已对该字段进行分析和建立索引，并且可以对其进行搜索.
• 已存储-该字段的全文已存储，并将与搜索结果一起返回.

如果文档已建立索引但未存储，则可以搜索它，但不会与搜索结果一起返回.

If a document is indexed but not stored, you can search for it, but it won't be returned with search results.

一种合理的通用模式是使用lucene进行搜索，但仅存储一个ID字段，该ID字段可用于从例如SQL数据库，文件系统或SQL Server数据库中检索文档/记录的全部内容.网络资源.

One reasonably common pattern is to use lucene for search, but only have an ID field being stored which can be used to retrieve the full contents of the document/record from, for instance, a SQL database, a file system, or an web resource.

当该字段只是搜索工具时，您可能还选择不存储该字段，但不会向用户显示该字段，例如soundex/metaphone或内容字段的替代分析.

You might also opt not to store a field when that field is just a search tool, but you wouldn't display it to the user, such as a soundex/metaphone, or an alternate analysis of a content field.

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