title: Hibernate mapping returns null properties
body: <p>I have a Hibernate mapping setup. The table is species, my Java class is Species. hibernate.cfg.xml points to mappings in species.hbn.xml</p>
  
  <p>In my code I'm using a simple HQL query and then throwing the resultant Species instances into a "SpeciesLister" class (which I'm passing over to the presentation layer).</p>
  
  <pre><code>   SpeciesLister speciesList = new SpeciesLister();
      Query q = session.createQuery("SELECT s FROM Species s");
      for (Species s : (List&lt;Species&gt;) q.list()){
          speciesList.addSpecies(s);
      }
  </code></pre>
  
  <p>The Species class looks like this:</p>
  
  <pre><code>package springwildlife;
  
  public class Species implements Serializable
  {
      long id;
      String commonName;
      String latinName;
      String order;
      String family;
      ArrayList&lt;Sighting&gt; sightings;
  
      public Species()
      {
      }
  
      public Species(String commonName, String latinName)
      {
          sightings = new ArrayList&lt;Sighting&gt;();
          this.commonName = commonName;
          this.latinName = latinName;
      }
  
      public long getId()
      {
          return id;
      }
  
      public String getCommonName()
      {
          return commonName;
      }
  
      public String getLatinName()
      {
          return latinName;
      }
      public String getOrder()
      {
          return order;
      }
      public String getFamily()
      {
          return family;
      }
      public ArrayList&lt;Sighting&gt; getSightings()
      {
          return sightings;
      }
  
      public void addSighting(Sighting s)
      {
          sightings.add(s);
      }
  
      public void setId(long id)
      {
          this.id = id;
      }
  
      public void setCommonName(String cn)
      {
          commonName = cn;
      }
  
      public void setLatinName(String ln)
      {
          commonName = ln;
      }
  
      public void setFamily(String f)
      {
          family = f;
      }
  
      public void setOrder(String o)
      {
          order = o;
      }
  
  
  }
  </code></pre>
  
  <p>My database schema looks like this:</p>
  
  <pre><code>CREATE TABLE species
  (
    id serial NOT NULL,
    common_name text,
    latin_name text,
    order_name text,
    family_name text,
    CONSTRAINT id PRIMARY KEY (id)
  )
  </code></pre>
  
  <p>species.hbn.xml looks like this:</p>
  
  <pre><code>&lt;?xml version="1.0"?&gt;
  &lt;!DOCTYPE hibernate-mapping PUBLIC 
  "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
  "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"&gt;
  
  &lt;hibernate-mapping&gt;
    &lt;class name="springwildlife.Species" table="species"&gt;
        &lt;id name="id" type="java.lang.Long" column="id" &gt;
            &lt;generator class="native"&gt;
                &lt;param name="sequence"&gt;species_id_seq&lt;/param&gt;
            &lt;/generator&gt;
  
    &lt;/id&gt;
  
    &lt;property name="commonName" type="java.lang.String"&gt;
     &lt;column name="common_name" /&gt;
    &lt;/property&gt;
    &lt;property name="latinName" type="java.lang.String"&gt;
    &lt;column name="latin_name"/&gt;
    &lt;/property&gt;
    &lt;property name="order" type="java.lang.String"&gt;
    &lt;column name="order_name"/&gt;
    &lt;/property&gt;
    &lt;property name="family" type="java.lang.String"&gt;
    &lt;column name="family_name"/&gt;
    &lt;/property&gt;
   &lt;/class&gt;
  &lt;/hibernate-mapping&gt;
  </code></pre>
  
  <p>My SpeciesLister instance gets a full slate of all the expected number of Species instances. However, when I examine the resultant Species instances, all their fields are null except for the id (long), all the others like familyName, latinName, commonName all are null in the mapped object.</p>
  
  <p>This is unexpected and I can't figure out why it is happening. Am I doing something wrong? </p>
  
  <p>I'm suspicious about two things, but I'm not sure of what to make of them:</p>
  
  <ol>
  <li><p>I think the fact that the id is being property set, but not the other string fields might be a clue.</p></li>
  <li><p>I suspect something might be wrong with the way I'm casting the objects into a list of Species instances.</p></li>
  </ol>