Two component addresses having appropriate naming strategy

Doc/course.xml

@@ -18111,30 +18111,30 @@ public class User {
           <glosslist>
             <glossentry>
-              <glossterm>Entity type</glossterm>
+              <glossterm>Value type</glossterm>
               <glossdef>
-                <para>Objects of this type do have their own database identity
-                and may exist independently of other (database)
-                entities.</para>
+                <para>An object of value type has no database identity. It
+                will appear in a database as a composite of a parent entity
+                type. Its life cycle is completely dependent on its
+                parent.</para>
               </glossdef>
             </glossentry>
             <glossentry>
-              <glossterm>Value type</glossterm>
+              <glossterm>Entity type</glossterm>
               <glossdef>
-                <para>An object of value type has no database identity. It
-                will appear in a database as a composite of a parent entity
-                type. Its lifecycle is completely dependent on its
-                parent.</para>
+                <para>Objects of this type do have their own database identity
+                and may exist independently of other (database)
+                entities.</para>
               </glossdef>
             </glossentry>
           </glosslist>
         </section>
-        <section xml:id="sect_MappingEmbeddedClass">
-          <title>Mapping a single embedded class</title>
+        <section xml:id="sect_MappingComponents">
+          <title>Mapping components</title>
           <para/>
         </section>

ws/eclipse/HibIntro/src/main/java/component/address/Address.java

+package component.address;
+
+import javax.persistence.Embeddable;
+
+@Embeddable
+public class Address {
+
+	private String street;
+	public String getStreet() { return street;}
+  public void setStreet(String street) { this.street = street;}
+
+  private String city;
+  public String getCity() { return city;}
+  public void setCity(String city) { this.city = city;}
+
+  private String zipcode;
+  public String getZipcode() { return zipcode;}
+  public void setZipcode(String zipcode) { this.zipcode = zipcode;}
+  
+  protected Address() {}
+  
+  public Address(final String street, final String city, final String zipcode) {
+    setStreet(street);
+    setCity(city);
+    setZipcode(zipcode);
+  }
+}
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ws/eclipse/HibIntro/src/main/java/component/address/PersistUser.java

+package component.address;
+
+import hibintro.util.HibernateUtil;
+
+import org.hibernate.Session;
+import org.hibernate.Transaction;
+import org.hibernate.cfg.DefaultComponentSafeNamingStrategy;
+
+/**
+ * @author goik
+ * 
+ * Persisting {@link User} instances having component E-Mail Addresses
+ *
+ */
+public class PersistUser {
+
+   /**
+    * @param args not used.
+    */
+   public static void main(String[] args) {
+     HibernateUtil.configuration.setNamingStrategy(new DefaultComponentSafeNamingStrategy());
+      final Session session = HibernateUtil.createSessionFactory("component/address/hibernate.cfg.xml").openSession();
+
+      final Transaction transaction = session.beginTransaction();
+      {
+         final User u = new User(123, "goik", "Martin Goik");
+         u.setHomeAddress(new Address("144 Kings Highway", "S.W. Dover", "DE 19901"));
+         u.setWorkAddress(new Address("22 Baker St", "Morton", "PA 19070"));
+         session.save(u);
+      }
+      transaction.commit();
+   }
+}
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ws/eclipse/HibIntro/src/main/java/component/address/User.java

+package component.address;
+
+import javax.persistence.Column;
+import javax.persistence.Embedded;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import javax.persistence.UniqueConstraint;
+
+/**
+ * @author goik
+ * 
+ *         {@link User} instances with addresses
+ * 
+ */
+@Entity
+@Table(uniqueConstraints={@UniqueConstraint(columnNames={"uid"}),
+    @UniqueConstraint(columnNames={"uidNumber"})})
+public class User {
+
+  @Id
+  @GeneratedValue
+  private Long id;
+  public Long getId() {return id;}
+  protected void setId(Long id) {this.id = id;}
+
+  int uidNumber;
+  public int getUidNumber() {return uidNumber;}
+  public void setUidNumber(int uidNumber) {this.uidNumber = uidNumber;}
+
+  String uid;
+
+  /**
+   * 
+   * @return The user's unique login name e.g. "goik"
+   */
+  @Column(nullable=false)
+  public String getUid() {return uid;}
+  public void setUid(String uid) {this.uid = uid;}
+
+  String cname;
+  /**
+   * @return The user's common name e.g. "Martin Goik"
+   */
+  @Column(nullable = false)
+  public String getCname() {return cname;}
+  public void setCname(String cname) {this.cname = cname;}
+
+  private Address workAddress;
+  @Embedded
+  public Address getWorkAddress() { return workAddress;}
+  public void setWorkAddress(final Address workAddress) { this.workAddress = workAddress;}
+
+  private Address homeAddress;
+  @Embedded
+  public Address getHomeAddress() { return homeAddress;}
+  public void setHomeAddress(Address homeAddress) { this.homeAddress = homeAddress;}
+  
+  protected User() {}
+
+  /**
+   * @param uidNumber See {@link #getUidNumber()}.
+   * @param uid See {@link #getUid()}. This parameter must not be null
+   * @param cname See {@link #getCname()}.
+   */
+  public User(final int uidNumber, final String uid, final String cname) {
+    setUidNumber(uidNumber);
+    setUid(uid);
+    setCname(cname);
+  }
+  @Override
+  public boolean equals(Object other) {
+    if (this == other) {
+      return true;
+    } else if (getUid() == null) {
+      return false;
+    } else if (other instanceof User) {
+      final User that = (User) other;
+      return this.getUid().equals( that.getUid() );
+    } else {
+      return false;
+    }
+  }
+  @Override
+  public int hashCode() {
+    if (null == getUid()) {
+      return System.identityHashCode(this);
+    } else {
+      return getUid().hashCode();
+    }
+  }
+}
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ws/eclipse/HibIntro/src/main/java/component/address/hibernate.cfg.xml

+<?xml version="1.0" encoding="UTF-8"?>
+
+<!DOCTYPE hibernate-configuration PUBLIC
+	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
+	"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
+
+<hibernate-configuration>
+ <session-factory >
+  <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
+  <property name="hibernate.connection.password">XYZ</property>
+  <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/hdm</property>
+  <property name="hibernate.connection.username">hdmuser</property>
+  <property name="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
+  <property name="hibernate.show_sql">true</property>
+  <property name="hibernate.format_sql">true</property>
+  <property name="hibernate.hbm2ddl.auto">update</property>
+  <property name="hibernate.ejb.naming_strategy">DefaultComponentSafeNamingStrategy</property>
+  
+  
+  <mapping class="component.address.User"/>
+ </session-factory>
+</hibernate-configuration>