asmhatreandClaude Sonnet 5.5
c9faf35e61
Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b7rnC7jppGGdHGESvy
69 lines
3.2 KiB
Plaintext
69 lines
3.2 KiB
Plaintext
Spring Data JPA over @SoftDelete (boolean strategy), H2, Hibernate 7.4.14.Final
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== save, count, deleteById, findById
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-- count()
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sql> select count(*) from article_deleted ad1_0 where ad1_0.deleted=false
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-- deleteById(1)
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sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
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sql> update article_deleted set deleted=true where id=? and deleted=false
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-- findById(1)
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sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
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isPresent = false
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-- existsById(1)
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sql> select count(*) from article_deleted ad1_0 where ad1_0.id=? and ad1_0.deleted=false
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existsById = false
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-- count() and findAll().size()
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sql> select count(*) from article_deleted ad1_0 where ad1_0.deleted=false
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sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false
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count = 2, findAll = 2
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== derived queries and derived deletes
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-- countByTitle("x")
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sql> select count(ad1_0.id) from article_deleted ad1_0 where ad1_0.title=? and ad1_0.deleted=false
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countByTitle(x) = 1
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-- deleteByTitle("x")
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sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.title=? and ad1_0.deleted=false
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sql> update article_deleted set deleted=true where id=? and deleted=false
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returned 1
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== deleting something that is already (soft) deleted
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-- deleteById(1) again
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sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
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no exception
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-- delete(staleEntity) with the instance saved earlier
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sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
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no exception
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== save() of a detached instance whose row is soft-deleted
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-- save(saved.get(0))
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sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
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sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
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result: ObjectOptimisticLockingFailureException -> StaleObjectStateException: Row was already updated or deleted by another transaction for entity [com.ankurm.softdelete.ArticleDeleted with id '1']
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== bulk delete, native queries, restore
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-- @Query("delete from ArticleDeleted a where a.title = :title") bulkDeleteByTitle("z")
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sql> update article_deleted ad1_0 set deleted=true where ad1_0.title=? and ad1_0.deleted=false
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returned 1
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-- count() vs native count(*)
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sql> select count(*) from article_deleted ad1_0 where ad1_0.deleted=false
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sql> select count(*) from article_deleted
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count() = 1, countIncludingDeleted() = 4
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-- native findEvenIfDeleted(1)
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sql> select * from article_deleted where id = ?
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present = true
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-- native restore(1)
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sql> update article_deleted set deleted = false where id = ?
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rows updated: 1
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-- findById(1) after restore
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sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false and ad1_0.id=?
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isPresent = true
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== deleteAll variants
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-- deleteAllInBatch()
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sql> update article_deleted ad1_0 set deleted=true where ad1_0.deleted=false
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count() = 0, countIncludingDeleted() = 4
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-- deleteAll()
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sql> select ad1_0.id,ad1_0.title from article_deleted ad1_0 where ad1_0.deleted=false
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sql> update article_deleted set deleted=true where id=? and deleted=false
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count() = 0
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