javax.persistence

public @Interface Basic

Annotations

@Target:METHOD, FIELD
@Retention:RUNTIME

Imports

The simplest type of mapping to a database column. The 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: Java Persistence 1.0

Method Summary

Modifier and Type	Method and Description
public FetchType	fetch() (Optional) Defines whether the value of the field or property should be lazily loaded or must be eagerly fetched.
public boolean	optional() (Optional) Defines whether the value of the field or property may be null.

Inherited from java.lang.annotation.Annotation:: annotationType equals hashCode toString

Method Detail

fetch	back to summary
public FetchType fetch() (Optional) Defines whether the value of the field or property should be lazily loaded or must be eagerly fetched. The `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`.

optional	back to summary
public boolean optional() (Optional) Defines whether the value of the field or property may be null. This is a hint and is disregarded for primitive types; it may be used in schema generation. If not specified, defaults to `true`.