合并多个分类索引以进行分面搜索
我计划更改现有的 lucene 索引以使用 lucene 3.4.0 中引入的新方面。
不幸的是，文档仍然有点稀疏，所以我找不到问题的答案：
我创建了一个包含 800 万本书的相对较大的索引，方法是将其分为几个较小的文档组，为它们创建索引，然后将它们全部连接起来使用 IndexWriter.addIndexes 合并到一个大索引。
这允许将工作分配给多个线程甚至计算机。
我现在想向索引添加分面搜索功能，但遇到以下问题：如何合并/添加/加入由 LuceneTaxonmyWriter 创建的多个分类索引？
I am planing to change my existing lucene index to use the new facets introduced in lucene 3.4.0.
Unfortunately, documentation is still a bit sparse, so I could not find an answer to my question:
I create a relatively large index of 8 million books by dividing it into several smaller groups of documents, creating indices for them, and then joining them all together to one big index using IndexWriter.addIndexes.
This allows the work to be split among several threads or even computers.
I now would like to add faceted search capabilities to my index, but I have the following problem: How can I merge/add/join several taxonomy indexes as created by LuceneTaxonmyWriter?
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我问了同样的问题 关于 lucene 邮件列表 他们将我指向类 TaxonomyMergeUtils 即lucene-facets 模块示例的一部分。
此类包含将两个索引及其分类索引合并在一起所需的代码。
注意：如果您使用 maven 包，则不包含示例，您必须从网站下载完整的 lucene 包（可能还有它的源代码）。
I asked the same question on the lucene mailing list and they pointed me to the class TaxonomyMergeUtils that is part of the examples for the lucene-facets module.
This class contains the code needed to merge two indexes together with their taxonomy index.
Note: If you are using the maven package, the examples are not included, you will have to download the complete lucene package (and probably its source code as well) from the website.