Add Hibernate 7 batches 2-6, batch 7, and batch 8: mapping styles, JPA annotations, natural IDs, @Immutable, stored procedures, in-memory test databases, JNDI mocking, proxies, associations, temporal mapping, named queries, HQL, Criteria API, EntityManager bootstrapping, Ehcache 3 L2 cache configuration, HikariCP connection pooling, Hibernate Validator CDI integration, aggregate functions, sorting, pagination, interceptors, and Hibernate Search 8 (Hibernate 7.4.5.Final + Spring Boot 4.1.1 + JDK 25)

src/test/java/com/ankurm/hibernatedemo/proxy/OsivBookService.java

@@ -0,0 +1,27 @@
+package com.ankurm.hibernatedemo.proxy;
+
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.PersistenceContext;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+/**
+ * Test-only support for docs/11-proxies-and-lazy-initialization.md's OSIV chapter (OsivMaskingTest). Deliberately
+ * uses the container-managed, request/transaction-synchronized {@link EntityManager} (via
+ * {@code @PersistenceContext}), not a manually created one -- open-in-view only has anything
+ * to bind to the request thread when the shared, Spring-managed EntityManager is the one in
+ * play.
+ */
+@Service
+public class OsivBookService {
+
+    @PersistenceContext
+    private EntityManager entityManager;
+
+    @Transactional(readOnly = true)
+    public ProxyBook findBook(Long id) {
+        // Deliberately does NOT touch getReviews() here -- whether that succeeds later, during
+        // JSON serialization in the web layer, is exactly the thing under test.
+        return entityManager.find(ProxyBook.class, id);
+    }
+}