14 | Find the error...JPA ENTITY HIBERNATE.persistence.Column; import javax.persistence.Entity; import javax.persistence.FetchType; import ... { private static final long serialVersionUID = 1L; // @GeneratedValue @Id @Column(name = "id") @GeneratedValue(strategy = GenerationType.IDENTITY) private int id; @Column(name = "username") private |
12 | Problem with entities detection.Column; import javax.persistence.Embedded; import javax.persistence.Entity; import javax ... = GenerationType.IDENTITY) @Basic(optional = false) @Column(name = "id_alumno") private Long idAlumno; @Column(name = "dni") private String dni; @Column(name = "nombre |
11 | alter tableHi: After a table built by real data, how to alter table structure, such as: alter table add column ... . Anyway, > alter table add column ... This is automatic - just change your class (see Database Schema Evolution in ... column"; but I can not find anything about "add index" in the links you given. TIA gzdillon Lai Yang |
3 | JoinColumn.nullableAnnotation Element javax.persistence.JoinColumn boolean nullable (Optional) Whether the foreign key column is nullable. Default value: true Since: JPA 1.0 |
3 | SecondaryTable.uniqueConstraintsAnnotation Element javax.persistence.SecondaryTable UniqueConstraint[] uniqueConstraints (Optional) Unique constraints that are to be placed on the table. These are typically only used if table generation is in effect. These constraints apply in addition to any constraints specified by the Column |
3 | GenerationType.IDENTITYEnum Constant javax.persistence.GenerationType IDENTITY Indicates that the persistence provider must assign primary keys for the entity using a database identity column. Since: JPA 1.0 |
3 | MapKeyJoinColumn.updatableAnnotation Element javax.persistence.MapKeyJoinColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default value: true Since: JPA 2.0 |
3 | ColumnResult.nameAnnotation Element javax.persistence.ColumnResult String name (Required) The name of a column in the SELECT clause of a SQL query Since: JPA 1.0 |
3 | javax.persistence.OneToOne embedded field or property. Example 1: One-to-one association that maps a foreign key column |
0 | Embedded.nullIndicatorValueAnnotation Element javax.jdo.annotations.Embedded String nullIndicatorValue The value in the null column to interpret the object as being null. Returns: the null indicator value Default value: "" Since: JDO 2.1 |
