问题描述
正在使用Lucene构建图书搜索" API.我需要在Lucene索引中索引Book Name，Author和Book类别字段.
Am building a "Book search" API using Lucene.I need to index Book Name,Author, and Book category fields in Lucene index.
一本书可以属于多个不同的书籍类别...例如:
A single book can fall under multiple distinct book categories...for example:
BookName1-小说，幽默，哲学.BookName1-小说，科学.BookName1-幽默，业务.BookName4-幽默等等.....
BookName1 --fiction,humour,philosophy.BookName1 --fiction,science.BookName1 --humour,business.BookName4-humourand so on.....
用户应该能够搜索特定类别(例如荣誉")中的所有图书.
User should be able to search all the books under a particular category say "homour".
鉴于这种情况，我如何在以上字段中建立索引并在lucene中构建查询?
Given this situation, how do i index above fields and build the query in lucene?
推荐答案
您可以让一个Lucene文档的字段多次出现.创建文档，添加名称和作者的值，然后对每个类别执行相同的操作
You can have a field for a Lucene document occur multiple times. Create the document, add the values for the the name and author, then do the same for each category
- 创建新的lucene文档
- 添加名称字段和值
- 添加作者字段和值
- 每个类别:
- 添加类别字段和值
- create new lucene document
- add name field and value
- add author field and value
- for each category:
- add category field and value
当您在索引中搜索类别时，它将返回所有具有类别字段且带有您要的值的文档.类别应为关键字"字段.
When you search the index for a category, it will return all documents that have a category field with the value you're after. The category should be a 'Keyword' field.
我用英语编写它是因为每个lucene版本的特定代码略有不同.
I've written it in english because the specific code is slightly different per lucene version.
这篇关于具有多个不同值的字段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！