Hello
Is it possible to completely delete all data in HS?
I remap all of my entities, and so I need to rebuild index from scratch. I know hopw to iterate over all objects and index them, but how to clear index?
I know I can delete files with indexes from disk, but I would like rather do it programatically.
So I need:
1)delete all objects
2)compact indexes
3)reindex all objects

I know how to do 2) and 3), but what about 1)? I don't want to remove from index one by one object, I believe there is simpler method

Hi,

have you seen the purgeAll method?
http://www.hibernate.org/hib_docs/search/reference/en/html_single/#d0e2316


You could delete the index files programmatically; but it would be preferrable to stop Hibernate Search before doing so; also you have to restart it to have new indexes created.

In alternative you could delete the files and then write a new empty index using the Lucene api (see IndexWriter), but you should interact with the Hibernate Search locking system to be safe.

I'm not sure what could happen if you replace the index without using the locks, I could look at it if you can't stop the system.

regards,

Hi,
I verified the purgeAll method does not iterate on the objects one by one,
so for each indexed entity you just have to:
1)purgeAll
2)optimize
3)reindex all

regards,

use purgeAll as Sanne said

purgeAll works ok.