@Entity

From CauchoWiki

The @Entity annotation marks a Java class as a persistent entity, mapped to a database table.

@Entity
 public class TestBean {
     ...
 }

The fields or properties of the entity's Java class are mapped to database columns. The entity must have at least on @Id column.

[edit] Annotation Definition

 public @interface Entity {
     String name() default "";
 }

The default name is the unqualified name of the Java class, e.g. TestBean. The entity name is used in queries as well as providing the default table name.

[edit] Field and property annotations

The fields or properties of the entity are mapped to database columns. The following list the possible types:

• @Basic - primitive columns like Strings, int, double, etc.
• @Id - a primary key column.
• @ManyToOne - a unidirectional link (foreign key)
• @OneToMany - a collection of children (unidirectional or bidirectional)
• @ManyToMany - a collection of children

A catalog of relation types is at Relation catalog

[edit] Related class-level annotations

The following annotations can be used in combination with @Entity.

 * @Table specifies the table name