Spring Data JPA over @SoftDelete (boolean strategy), H2, Hibernate 7.4.14.Final

== save, count, deleteById, findById
-- count()
   sql> select count(*) from article_deleted ad1_0 where ad1_0.deleted=false
-- deleteById(1)
   sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
   sql> update article_deleted set deleted=true where id=? and deleted=false
-- findById(1)
   sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
isPresent = false
-- existsById(1)
   sql> select count(*) from article_deleted ad1_0 where ad1_0.id=? and ad1_0.deleted=false
existsById = false
-- count() and findAll().size()
   sql> select count(*) from article_deleted ad1_0 where ad1_0.deleted=false
   sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false
count = 2, findAll = 2

== derived queries and derived deletes
-- countByTitle("x")
   sql> select count(ad1_0.id) from article_deleted ad1_0 where ad1_0.title=? and ad1_0.deleted=false
countByTitle(x) = 1
-- deleteByTitle("x")
   sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.title=? and ad1_0.deleted=false
   sql> update article_deleted set deleted=true where id=? and deleted=false
returned 1

== deleting something that is already (soft) deleted
-- deleteById(1) again
   sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
no exception
-- delete(staleEntity) with the instance saved earlier
   sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
no exception

== save() of a detached instance whose row is soft-deleted
-- save(saved.get(0))
   sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
   sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
result: ObjectOptimisticLockingFailureException -> StaleObjectStateException: Row was already updated or deleted by another transaction for entity [com.ankurm.softdelete.ArticleDeleted with id '1']

== bulk delete, native queries, restore
-- @Query("delete from ArticleDeleted a where a.title = :title")  bulkDeleteByTitle("z")
   sql> update article_deleted ad1_0 set deleted=true where ad1_0.title=? and ad1_0.deleted=false
returned 1
-- count() vs native count(*)
   sql> select count(*) from article_deleted ad1_0 where ad1_0.deleted=false
   sql> select count(*) from article_deleted
count() = 1, countIncludingDeleted() = 4
-- native findEvenIfDeleted(1)
   sql> select * from article_deleted where id = ?
present = true
-- native restore(1)
   sql> update article_deleted set deleted = false where id = ?
rows updated: 1
-- findById(1) after restore
   sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
isPresent = true

== deleteAll variants
-- deleteAllInBatch()
   sql> update article_deleted ad1_0 set deleted=true where ad1_0.deleted=false
count() = 0, countIncludingDeleted() = 4
-- deleteAll()
   sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false
   sql> update article_deleted set deleted=true where id=? and deleted=false
count() = 0