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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/01-entitymanager-vs-entityagent.txt
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EntityManager: find, edit title, commit (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 version from final table (update book set price=?,publisher_id=?,title=?,version=?,views=? where isbn=? and version=?)
title in database afterwards: Changed via EntityManager
EntityAgent: get, edit title, commit (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=?
title in database afterwards: Book 2
EntityAgent: get, edit title, update(book), commit (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 version from final table (update book set version=case when price is distinct from ? or publisher_id is distinct from ? or title is distinct from ? then ? else version end,price=?,publisher_id=?,title=?,views=? where isbn=? and version=?)
title in database afterwards: Changed via EntityAgent + update()