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Hibernate 8 + Jakarta Persistence 4: EntityAgent and stateless sessions demo

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Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_017ic4b7jUQrypvpE1ix1k7V
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asmhatre
2026-11-14 01:34:34 +05:30
co-authored by Claude Sonnet 5.5
commit 453fad0ee7
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output/02-get-find-and-no-cache.txt
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agent.find(missing) -> null
agent.get(missing) -> EntityNotFoundException
EntityAgent, same id twice in one transaction:
same instance? false
SQL (2 statements)
select b1_0.isbn,b1_0.price,b1_0.publisher_id,b1_0.title,b1_0.version,b1_0.views from book b1_0 where b1_0.isbn=?
select b1_0.isbn,b1_0.price,b1_0.publisher_id,b1_0.title,b1_0.version,b1_0.views from book b1_0 where b1_0.isbn=?
EntityManager, same id twice in one transaction:
same instance? true
SQL (1 statement)
select b1_0.isbn,b1_0.price,b1_0.publisher_id,b1_0.title,b1_0.version,b1_0.views from book b1_0 where b1_0.isbn=?
agent.getMultiple(3 ids) returned 3 books
SQL (1 statement)
select b1_0.isbn,b1_0.price,b1_0.publisher_id,b1_0.title,b1_0.version,b1_0.views from book b1_0 where b1_0.isbn in (?,?,?)