Add Hibernate 7 batches 2-5: mapping styles, JPA annotations, natural IDs, @Immutable, stored procedures, in-memory test databases, JNDI mocking, proxies, associations, temporal mapping and named queries (Hibernate 7.4.5.Final + Spring Boot 4.1.1 + JDK 25)

src/main/java/com/ankurm/hibernatedemo/association/AssocBook.java

@@ -0,0 +1,50 @@
+package com.ankurm.hibernatedemo.association;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+
+/** Owning side (holds the FK) of {@link AssocAuthor#getBooks()}. Docs: 12-association-mappings.md. */
+@Entity
+@Table(name = "assoc_book")
+public class AssocBook {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private String title;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "author_id")
+    private AssocAuthor author;
+
+    protected AssocBook() {
+    }
+
+    public AssocBook(String title, AssocAuthor author) {
+        this.title = title;
+        this.author = author;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public AssocAuthor getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(AssocAuthor author) {
+        this.author = author;
+    }
+}