byte[], Byte[]
char[], String, Character[]
To use this feature just need to use the @javax.persistence.Lob annotation. The Lob annotation is an encapsulation of what type of lob you want. Below is an example of defining fields in an entity that are blobs or clobs.
@Entity
public class BlobEntity implements Serializable
{
   private long id;
   private Blob blobby;
   private Clob clobby;
   @Id @GeneratedValue(strategy=GenerationType.IDENTITY)
   public long getId()
   {
      return id;
   }
   public void setId(long id)
   {
      this.id = id;
   }
   @Lob @Basic(fetch = FetchType.EAGER)
   public Blob getBlobby()
   {
      return blobby;
   }
   public void setBlobby(Blob blobby)
   {
      this.blobby = blobby;
   }
   @Lob @Basic(fetch = FetchType.EAGER)
   public Clob getClobby()
   {
      return clobby;
   }
   public void setClobby(Clob clobby)
   {
      this.clobby = clobby;
   }
}
Blob Creation
| org.hibernate.Hibernate.createBlob(byte[] bytes) | |
| org.hibernate.Hibernate.createBlob(InputStream stream, int length) | |
| org.hibernate.Hibernate.createBlob(InputStream stream) | 
Clob Creation
| org.hibernate.Hibernate.createClob(String string) | |
| org.hibernate.Hibernate.createClob(Reader reader, int length) | 
Blobs and clobs must only be accessed within a transaction. Blobs and clobs are also not serializable or detachable.
byte[]to Clob/Blob
@Entity
public class BlobEntity2 implements Serializable
{
   private long id;
   private byte[] blobby;
   private String clobby;
   @Id @GeneratedValue(strategy=GenerationType.AUTO)
   public long getId()
   {
      return id;
   }
   public void setId(long id)
   {
      this.id = id;
   }
   @Lob @Basic(fetch = FetchType.EAGER)
   public byte[] getBlobby()
   {
      return blobby;
   }
   public void setBlobby(byte[] blobby)
   {
      this.blobby = blobby;
   }
   @Lob @Basic(fetch = FetchType.EAGER)
   public String getClobby()
   {
      return clobby;
   }
   public void setClobby(String clobby)
   {
      this.clobby = clobby;
   }
}
Unix: $ export JBOSS_HOME=<where your jboss 4.0 distribution is> Windows: $ set JBOSS_HOME=<where your jboss 4.0 distribution is> $ ant $ ant run