<hibernate-mapping>

  <class name="com.oreilly.hh.Track" table="TRACK">
    <meta attribute="class-description">
      Represents a single playable track in the music database.
      @author Jim Elliott (with help from Hibernate)
    </meta>

    <meta attribute="implement-equals">true</meta>

    <id name="id" type="int" column="TRACK_ID">
      <meta attribute="scope-set">protected</meta>
      <generator class="native"/>
    </id>

    <property name="title" type="string" not-null="true"/>

    <property name="filePath" type="string" not-null="true"/>

    <property name="playTime" type="time">
      <meta attribute="field-description">Playing time</meta>
    </property>

    <property name="added" type="date">
      <meta attribute="field-description">When the track was created</meta>
    </property>

    <property name="volume" type="short">
      <meta attribute="field-description">How loud to play the track</meta>
    </property>

  </class>
</hibernate-mapping>

package com.oreilly.hh;

import java.io.Serializable;
import java.util.Date;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;


/**
*       Represents a single playable track in the music database.
*       @author Jim Elliott (with help from Hibernate)
*
*/
public class Track implements Serializable {

    /** identifier field */
    private Integer id;

    /** persistent field */
    private String title;

    /** persistent field */
    private String filePath;

    /** nullable persistent field */
    private Date playTime;

    /** nullable persistent field */
    private Date added;

    /** nullable persistent field */
    private Short volume;

    /** full constructor */
    public Track(String title, String filePath, Date playTime, Date added, Short volume) {
        this.title = title;
        this.filePath = filePath;
        this.playTime = playTime;
        this.added = added;
        this.volume = volume;
    }