[macinsmith]

It seems that GeneratePOJO doesn’t handle composite-element correctly or at least it doesn’t generate all the necessary POJOs. Here are the three hmb.xml mapping files.

Album.hbm.xml

<?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.Album" table="ALBUM">
    <meta attribute="class-description">
      Represents an album in the music database, an organized list of tracks.
      @author Jim Elliott (with help from Hibernate)
    </meta>

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

    <property name="title" type="string">
      <meta attribute="use-in-tostring">true</meta>
      <column name="TITLE" not-null="true" index="ALBUM_TITLE"/>
    </property>

    <property name="numDiscs" type="integer" not-null="true"/>

    <set name="artists" table="ALBUM_ARTISTS">
      <key column="ALBUM_ID"/>
      <many-to-many class="com.oreilly.hh.Artist" column="ARTIST_ID"/>
    </set>

    <set name="comments" table="ALBUM_COMMENTS">
      <key column="ALBUM_ID"/>
      <element column="COMMENT" type="string"/>
    </set>

    <list name="tracks" table="ALBUM_TRACKS" cascade="all">
      <meta attribute="use-in-tostring">true</meta>
      <key column="ALBUM_ID"/>
      <index column="POS"/>
      <composite-element class="com.oreilly.hh.AlbumTrack">
        <many-to-one name="track" class="com.oreilly.hh.Track" cascade="all">
          <meta attribute="use-in-tostring">true</meta>
          <column name="TRACK_ID"/>
        </many-to-one>
        <property name="disc" type="integer" not-null="true"/>
        <property name="positionOnDisc" type="integer" not-null="true"/>
      </composite-element>
    </list>

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

  </class>
</hibernate-mapping>

Artist.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

  <class name="com.oreilly.hh.Artist" table="ARTIST">
    <meta attribute="class-description">
      Represents an artist who is associated with a track or album.
      @author Jim Elliott (with help from Hibernate)
    </meta>

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

    <property name="name" type="string">
      <meta attribute="use-in-tostring">true</meta>
      <column name="NAME" not-null="true" unique="true" index="ARTIST_NAME"/>
    </property>

    <set name="tracks" table="TRACK_ARTISTS" inverse="true">
      <meta attribute="field-description">Tracks by this artist</meta>
      <key column="ARTIST_ID"/>
      <many-to-many class="com.oreilly.hh.Track" column="TRACK_ID"/>
    </set>

    <many-to-one name="actualArtist" class="com.oreilly.hh.Artist">
      <meta attribute="use-in-tostring">true</meta>
    </many-to-one>

  </class>

  <query name="com.oreilly.hh.artistByName">
    <![CDATA[
        from com.oreilly.hh.Artist as artist
        where upper(artist.name) = upper(:name)
      ]]>
  </query>

</hibernate-mapping>

Track.hbm.xml

<?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 Jim Elliott (with help from Hibernate)
    </meta>

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

    <property name="title" type="string">
      <meta attribute="use-in-tostring">true</meta>
      <column name="TITLE" not-null="true" index="TRACK_TITLE"/>
    </property>

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

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

    <set name="artists" table="TRACK_ARTISTS">
      <key column="TRACK_ID"/>
      <many-to-many class="com.oreilly.hh.Artist" column="ARTIST_ID"/>
    </set>

    <set name="comments" table="TRACK_COMMENTS">
      <key column="TRACK_ID"/>
      <element column="COMMENT" type="string"/>
    </set>

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

    <property name="volume" type="com.oreilly.hh.StereoVolumeType">
      <meta attribute="field-description">How loud to play the track</meta>
      <meta attribute="use-in-tostring">true</meta>
      <column name="VOL_LEFT"/>
      <column name="VOL_RIGHT"/>
    </property>

    <property name="sourceMedia" type="com.oreilly.hh.SourceMediaType">
      <meta attribute="field-description">Media on which track was obtained</meta>
      <meta attribute="use-in-tostring">true</meta>
    </property>

  </class>

  <query name="com.oreilly.hh.tracksNoLongerThan">
    <![CDATA[
        from com.oreilly.hh.Track as track
        where track.playTime <= :length
      ]]>
  </query>

</hibernate-mapping>

This should generate 4 files Album.java, AlbumTrack.java, Artist.java and Track.java but it fails to generate AlbumTrack.java. This code is taken from Oreilly’s book Hibernate:A Developer’s Notebook by Elliott.

[Riyad Kalla]

Mac let’s track the improvements of the POJOs in the other thread you started where snpe replied to you.

[Author]

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