Issue
I am developing a Spring boot application which is using spring data JPA as a persistence layer. I would like to enable a full text search with hibernate search, but because of some constraints i would like to persist the Lucene index into the database (instead of a file).
I have went through the documentation but was unable to find an example of persisting the index into a database. Also from reading it i understood that this is possible but i don't know where to start.
How should the configuration look like?
Solution
That's definitely not possible out of the box.
However, if you're willing to implement a solution yourself, you can plug it into Hibernate Search.
I've never done it, but I can offer some pointers.
You will need:
- A custom implementation of
org.apache.lucene.store.Directory: this is the adapter between Lucene and your storage solution (in your case, the database). See this answer; that's about a very old version of Lucene, but at least it's a starting point. - A custom implementation of
org.hibernate.search.store.DirectoryProvider: this is the component that configures and creates theDirectoryon startup. - Some configuration to tell Hibernate Search to use your
DirectoryProvider. See this section of the documentation
This should also be possible in Hibernate Search 6, though the directory provider interface is different: org.hibernate.search.backend.lucene.lowlevel.directory.spi.DirectoryProvider.
Answered By - yrodiere
