javax.persistence.Basic - JPA annotation
javax.persistence
Annotation Basic
- Target:
- Fields (including property get methods)
Basic
annotation can be applied to a persistent property or instance variable of any of the following types: Java primitive types, wrappers of the primitive types,
String
,
java.math.BigInteger
,
java.math.BigDecimal
,
java.util.Date
,
java.util.Calendar
,
java.sql.Date
,
java.sql.Time
,
java.sql.Timestamp
,
byte[]
,
Byte[]
,
char[]
,
Character[]
, enums, and any other type that implements
java.io.Serializable
.
The use of the Basic
annotation is optional for persistent fields and properties of these types. If the Basic
annotation is not specified for such a field or property, the default values of the Basic
annotation will apply.
Example 1:
@Basic protected String name;
Example 2:
@Basic(fetch=LAZY) protected String getName() { return name; }
- Since:
- JPA 1.0
EAGER
strategy is a requirement on the persistence provider runtime that the value must be eagerly fetched. The
LAZY
strategy is a hint to the persistence provider runtime. If not specified, defaults to
EAGER
.
- Default value:
- javax.persistence.FetchType.EAGER
- Since:
- JPA 1.0
true
.
- Default value:
- true
- Since:
- JPA 1.0