<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping
   PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN"
   "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">

<hibernate-mapping>
   <class name="com.oreilly.hh.Track" table="TRACK">
      <meta attribute="class-description">
         Represents a single playable track in the music database.
         @author Vara Prasad Bokka (with help from Hibernate)
      </meta>
      
      <id name="id" type="int" column="TRACK_ID">
         <meta attribute="scope-set">protected</meta>
         <generator class="assigned"/>
      </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" not-null="true">
         <meta attribute="field-description">How loud to play the track</meta>
      </property>
      
   </class>
</hibernate-mapping>

<?xml version="1.0"?>
<project name="Harnessing Hibernate: The Developer's Notebook" default="db" basedir=".">
   
   <!-- Set up properties containing important project directories -->
   <property name="source.root" value="src"/>
   <property name="class.root" value="classes"/>
   <property name="lib.dir" value="lib"/>
   <property name="data.dir" value="data"/>
   
   <!-- Set up the class path for compilation and execution -->
   <path id="project.class.path">
      <!-- Include our own classes, of course -->
      <pathelement location="${class.root}" />
      <!-- Include jars in the project library directory -->
      <fileset dir="${lib.dir}">
         <include name="*.jar"/>
      </fileset>   
   </path>
   
   <target name="db" description="Runs HSQLDB database management UI
      against the database file--use when application is not running">
      
      <java classname="org.hsqldb.util.DatabaseManager" fork="yes">
         <classpath refid="project.class.path"/>
         <arg value="-driver"/>
         <arg value="org.hsqldb.jdbcDriver"/>
         <arg value="-url"/>
         <arg value="jdbc:hsqldb:${data.dir}/music"/>
         <arg value="-user"/>
         <arg value="sa"/>
      </java>
   </target>
   
   <!-- Teach Ant how to use Hibernate's code generation tool -->
   <taskdef name="hbm2java"
          classname="net.sf.hibernate.tool.hbm2java.Hbm2JavaTask"
          classpathref="project.class.path"/>
   
   <!-- Generate the java code for all mapping files in our source tree -->
   <target name="codegen" description="Generate Java source from the O/R mapping files">
      <hbm2java output="${source.root}">
         <fileset dir="${source.root}">
            <include name="**/*.hbm.xml"/>
         </fileset>
      </hbm2java>
   </target>
</project>

package com.oreilly.hh;

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


/**
*          Represents a single playable track in the music database.
*          @author Vara Prasad Bokka (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;

    /** persistent field */
    private short volume;

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

    /** default constructor */
    public Track() {
    }

    /** minimal constructor */
    public Track(Integer id, String title, String filePath, short volume) {
        this.id = id;
        this.title = title;
        this.filePath = filePath;
        this.volume = volume;
    }

    public Integer getId() {
        return this.id;
    }

    protected void setId(Integer id) {
        this.id = id;
    }

    public String getTitle() {
        return this.title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getFilePath() {
        return this.filePath;
    }

    public void setFilePath(String filePath) {
        this.filePath = filePath;
    }

    /**
     * Playing time
     */
    public Date getPlayTime() {
        return this.playTime;
    }

    public void setPlayTime(Date playTime) {
        this.playTime = playTime;
    }

    /**
     * When the track was created
     */
    public Date getAdded() {
        return this.added;
    }

    public void setAdded(Date added) {
        this.added = added;
    }

    /**
     * How loud to play the track
     */
    public short getVolume() {
        return this.volume;
    }

    public void setVolume(short volume) {
        this.volume = volume;
    }

    public String toString() {
        return new ToStringBuilder(this)
            .append("id", getId())
            .toString();
    }

}

public boolean equals(Object other) {
  if(!(other instanceof Track)) return false;
  Track castOther = (Track) other;
  return new EqualsBuilder().append(this.getId(), castOther.getId()).isEquals();
   
}

public int hashCode() {
  return new HashCodeBuilder().append(getId()).toHashCode();
}