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/main/java/com/ankurm/hibernatedemo/bootstrap/BootstrapUser.java

@@ -0,0 +1,54 @@
+package com.ankurm.hibernatedemo.bootstrap;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+
+/**
+ * Backs ankurm.com post 4855 (bootstrapping EntityManager). Docs: docs/17-entitymanager-bootstrap.md.
+ *
+ * <p>Deliberately NOT scanned by Spring's own auto-configured {@code EntityManagerFactory}
+ * (see {@code META-INF/persistence.xml} under {@code src/test/resources}, which is what
+ * {@link EntityManagerBootstrapTest} actually bootstraps against) -- this chapter is about raw
+ * JPA bootstrapping, deliberately bypassing Spring Boot's autoconfiguration entirely so the two
+ * paths the fictional original article described (XML vs {@code PersistenceConfiguration}) are
+ * both exercised for real.
+ */
+@Entity
+public class BootstrapUser {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private String name;
+
+    private String email;
+
+    protected BootstrapUser() {
+        // JPA
+    }
+
+    public BootstrapUser(String name, String email) {
+        this.name = name;
+        this.email = email;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    @Override
+    public String toString() {
+        return "BootstrapUser{id=%s, name=%s, email=%s}".formatted(id, name, email);
+    }
+}