Annotation Type Lob

  • @Target({METHOD,FIELD})
    public @interface Lob
    Specifies that a persistent property or field should be persisted as a large object to a database-supported large object type.

    Portable applications should use the Lob annotation when mapping to a database Lob type. The Lob annotation may be used in conjunction with the Basic annotation or the ElementCollection annotation when the element collection value is of basic type. A Lob may be either a binary or character type.

    The Lob type is inferred from the type of the persistent field or property, and except for string and character-based types defaults to Blob.

       Example 1:
       @Lob @Basic(fetch=LAZY)
       protected String report;
       Example 2:
       @Lob @Basic(fetch=LAZY)
       @Column(name="EMP_PIC", columnDefinition="BLOB NOT NULL")
       protected byte[] pic;
    See Also:
    Basic, ElementCollection