create data model

cqrs/src/main/java/com/iluwatar/cqrs/domain/model/Author.java

@@ -0,0 +1,60 @@
+package com.iluwatar.cqrs.domain.model;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+/**
+ * 
+ * @author Sabiq Ihab
+ *
+ */
+@Entity
+public class Author {
+  @Id
+  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  private long id;
+  private String username;
+  private String name;
+  private String email;
+
+  /**
+   * 
+   * @param username
+   * @param name
+   * @param email
+   */
+  public Author(String username, String name, String email) {
+    super();
+    this.username = username;
+    this.name = name;
+    this.email = email;
+  }
+
+  public Author() {
+    super();
+  }
+
+  public long getId() {
+    return id;
+  }
+
+  public String getUsername() {
+    return username;
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  public String getEmail() {
+    return email;
+  }
+
+  @Override
+  public String toString() {
+    return "Author [name=" + name + ", email=" + email + "]";
+  }
+
+}

cqrs/src/main/java/com/iluwatar/cqrs/domain/model/Book.java

@@ -0,0 +1,62 @@
+package com.iluwatar.cqrs.domain.model;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.ManyToOne;
+
+/**
+ * 
+ * @author Sabiq Ihab
+ *
+ */
+@Entity
+public class Book {
+  @Id
+  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  private long id;
+  private String title;
+  private double price;
+  @ManyToOne
+  private Author author;
+
+  /**
+   * 
+   * @param title
+   * @param price
+   * @param author
+   */
+  public Book(String title, double price, Author author) {
+    super();
+    this.title = title;
+    this.price = price;
+    this.author = author;
+  }
+
+  public Book() {
+    super();
+  }
+
+  public long getId() {
+    return id;
+  }
+
+  public String getTitle() {
+    return title;
+  }
+
+  public double getPrice() {
+    return price;
+  }
+
+  public Author getAuthor() {
+    return author;
+  }
+
+  @Override
+  public String toString() {
+    return "Book [title=" + title + ", price=" + price + ", author=" + author + "]";
+  }
+
+}