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B. 提升地图仪的外国关键制约因素
原标题:foreign key constraint in Lift s mapper

我在Schala建立了一个使用Mapper的表格。

class Stage extends Mapper[Stage]
{                   
  def getSingleton = Stage             
  object controlId extends MappedLongForeignKey (this,Control) {  
    override def dbNotNull_? = true  
    override def dbColumnName = "control_id"  
  }  
}

但是,我的发言不会对外国人造成制约。 数据库的关键关键。

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