@Table(name = "", uniqueConstraints = @UniqueConstraint(columnNames = ""))
2017-02-09 10:58
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UniqueConstraint定义在Table或SecondaryTable元数据里,用来指定建表时需要建唯一约束的列。
元数据属性说明:
columnNames:定义一个字符串数组,指定要建唯一约束的列名。
@Entity
@Table(name="EMPLOYEE",
uniqueConstraints={@UniqueConstraint(columnNames={"EMP_ID", "EMP_NAME"})}
)
public class Employee { ... }
元数据属性说明:
columnNames:定义一个字符串数组,指定要建唯一约束的列名。
@Entity
@Table(name="EMPLOYEE",
uniqueConstraints={@UniqueConstraint(columnNames={"EMP_ID", "EMP_NAME"})}
)
public class Employee { ... }
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