search - In SOLR, how can I query to find an indexed keyword inside a user provided search query?

Question

I am running SOLR 3.6, and have documents that have tags indexed. When a user enters a search phrase, I'd like to be able to find documents with tags contained inside that query.

E.g, a user searching for "Any document that has boats tagged" would match a document that had "boats" as a tag.

I know you can do wildcard searching, but I need the wildcards applied to the solr field, not the search query.

The MySQL equivalent to this would be:

SELECT * FROM `documents` WHERE "Any document that has boats tagged" LIKE 'CONCAT('%', `document`, '%');

So I need a SOLR factory that will allow this type of query:

*document*:"Any document that has boats tagged"

Answer 1

如果tagsSolr 中的字段在索引时间和查询时间都是带有 LowerCaseFilterFactory 的多值文本字段，那么您可以简单地发出以下查询：

q=tags:(Super fast boats)

（我在这里更改了您的示例。）这将为您提供首先具有所有 3 个标签（如果有）的文档，然后是具有 2 个标签（如果有）然后是 1 个标签的文档。

这是假设在您的 schema.xml 中您得到了<solrQueryParser defaultOperator="OR"/>. 如果您有 AND，则需要用ORlike 分隔单词：

q=tags:(any OR document OR that OR has OR boats OR tagged)

（您可能还想对标签和查询使用词干提取以匹配更多标签，但这是您需要试验和决定的事情。）