title: Error on compiling query: The abstract schema type 'entity' is unknown
body: <p>I'm developing a game with a database connection, and I use JPA to persist my data. Here is my Game entity :</p>
  
  <pre><code>@Entity
  @Table(name = "game")
  public class Game implements Serializable {
  private static final long serialVersionUID = 1L;
  
  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  @Column(name = "game_id")
  private int id;
  
  @Column(name = "name")
  private String name;
  
  @Column(name = "nbTurns")
  private int nbTurns;
  
  @Column(name = "playedOn")
  @Temporal(TemporalType.TIMESTAMP)
  private Date playedOn;
  
  @ElementCollection(fetch = FetchType.EAGER)
  @CollectionTable(name = "game_humans", joinColumns = @JoinColumn(name = "game_id"))
  @MapKeyColumn(name = "human_id")
  @Column(name = "isDead")
  private Map&lt;Human, Boolean&gt; humans;
  </code></pre>
  
  <p>And here is my Human entity :</p>
  
  <pre><code>@Entity
  @Table(name = "human")
  public class Human implements Serializable {
  
  private static final long serialVersionUID = 1L;
  
  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  private int id;
  @Column(name = "name")
  private String name;
  @OneToOne
  private Building building;
  </code></pre>
  
  <p>To get the list of all the humans stored in the DB, I use this DAO, which is working very well and gets also the Building entity :</p>
  
  <pre><code>public class HumanDAO implements DAO&lt;Human&gt; {
  
  // ...
  public List&lt;Human&gt; getAllHumans() {
      TypedQuery&lt;Human&gt; query = em.createQuery("SELECT h FROM human h ORDER BY h.name", Human.class);
      return query.getResultList();
  }
  </code></pre>
  
  <p>The problem is when I try to do the same to get the list of all the games with the JPQL query <code>SELECT g FROM game g</code>, I get this error :</p>
  
  <pre><code>[EL Info]: 2013-11-25 13:40:27.761--ServerSession(1943119327)--EclipseLink, version: Eclipse Persistence Services - 2.5.0.v20130507-3faac2b
  [EL Info]: connection: 2013-11-25 13:40:28.151--ServerSession(1943119327)--file:/Users/amine/Documents/workspace/ZombiesServer/target/classes/_ZombiesServer login successful
  [WARNING] 
  java.lang.reflect.InvocationTargetException
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:606)
      at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:297)
      at java.lang.Thread.run(Thread.java:724)
  Caused by: java.lang.IllegalArgumentException: An exception occurred while creating a query in EntityManager: 
  Exception Description: Problem compiling [SELECT g FROM game g]. 
  [14, 18] The abstract schema type 'game' is unknown.
      at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1585)
      at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1605)
      at com.amine.zombies.DAO.GameDAO.getAllGames(GameDAO.java:80)
      at com.amine.zombies.application.Application.main(Application.java:21)
      ... 6 more
  </code></pre>