specify lob size in jpa entity

Question

I am using openjpa (Websphere Application Server 7) to interact with the database. Is it possible to specify a blob size in the java entity file? It looks like:

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;

@Lob
@Nullable
private byte[] content;

DB2 by defaults gives it a size of 1MB. I want to change that to 20MB.

Answer 1

You can use the @Column annotation:

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;

@Lob
@Nullable
@Column(length = 20971520)
private byte[] content;