asmhatreandClaude Sonnet 5.5
c9faf35e61
Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b7rnC7jppGGdHGESvy
72 lines
2.9 KiB
Plaintext
72 lines
2.9 KiB
Plaintext
Restoring rows and querying around the filter
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######## H2 ########
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database: H2Dialect / H2 2.4.240 (2025-09-22)
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== Boolean strategy: the deleted row is still in the table
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raw rows : [1 | kept | true, 2 | alive | false]
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-- HQL count
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sql> select count(ad1_0.id) from article_deleted ad1_0 where ad1_0.deleted=false
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-- native count
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sql> select count(*) from article_deleted
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== A native query mapped to the entity returns the deleted row
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native select * ... id=1 -> 1 entity, title=kept
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== HQL cannot restore: the flag is not an attribute
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IllegalArgumentException -> PathElementException: Could not resolve attribute 'deleted' of 'com.ankurm.softdelete.ArticleDeleted'
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== Native UPDATE restores it
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rows updated: 1
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-- find 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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== Stale persistence context: a soft delete done behind the session's back
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same session, row deleted by someone else: find -> still the entity (first-level cache)
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after session.clear(): find -> null
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== Timestamp strategy: restore sets the column back to NULL
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after delete : [1 | true]
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after restore : [1 | false]
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== @SQLRestriction: HQL CAN name the column, but the restriction rewrites the UPDATE too
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-- HQL: update ArticleManual a set a.deleted = false
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sql> update article_manual am1_0 set deleted=false where am1_0.id=? and (am1_0.deleted = false)
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HQL restore updated 0 rows
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raw rows : [1 | man | true]
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######## POSTGRES ########
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database: PostgreSQLDialect / PostgreSQL 17.11
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== Boolean strategy: the deleted row is still in the table
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raw rows : [1 | kept | true, 2 | alive | false]
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-- HQL count
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sql> select count(ad1_0.id) from article_deleted ad1_0 where ad1_0.deleted=false
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-- native count
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sql> select count(*) from article_deleted
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== A native query mapped to the entity returns the deleted row
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native select * ... id=1 -> 1 entity, title=kept
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== HQL cannot restore: the flag is not an attribute
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IllegalArgumentException -> PathElementException: Could not resolve attribute 'deleted' of 'com.ankurm.softdelete.ArticleDeleted'
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== Native UPDATE restores it
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rows updated: 1
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-- find 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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== Stale persistence context: a soft delete done behind the session's back
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same session, row deleted by someone else: find -> still the entity (first-level cache)
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after session.clear(): find -> null
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== Timestamp strategy: restore sets the column back to NULL
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after delete : [1 | true]
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after restore : [1 | false]
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== @SQLRestriction: HQL CAN name the column, but the restriction rewrites the UPDATE too
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-- HQL: update ArticleManual a set a.deleted = false
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sql> update article_manual am1_0 set deleted=false where am1_0.id=? and (am1_0.deleted = false)
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HQL restore updated 0 rows
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raw rows : [1 | man | true]
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