这很奇怪。
class Service implements Serializable{
Integer id
String serviceName
String description
SortedSet serviceRequirements
static hasMany = [ serviceRequirements : ServiceRequirement]
static mapping =
{
table 'service'
columns {
id column:'serviceId'
}
}}
servicereq0_.serviceId as serviceId1_,
servicereq0_.serviceRequirementId as serviceR1_1_,
servicereq0_.serviceRequirementId as serviceR1_9_0_,
servicereq0_.version as version9_0_,
servicereq0_.description as descript3_9_0_,
servicereq0_.header as header9_0_,
servicereq0_.isPersonal as isPersonal9_0_,
servicereq0_.requirementKey as requirem6_9_0_,
servicereq0_.required as required9_0_,
servicereq0_.serviceId as serviceId9_0_,
servicereq0_.type as type9_0_,
servicereq0_.weight as weight9_0_,
servicereq0_.oauthAccessTokenUrl as oauthAc12_9_0_,
servicereq0_.oauthAuthorizeAdditionalParameters as oauthAu13_9_0_,
servicereq0_.oauthAuthorizeState as oauthAu14_9_0_,
servicereq0_.oauthAuthorizeUrl as oauthAu15_9_0_,
servicereq0_.oauthClientId as oauthCl16_9_0_,
servicereq0_.oauthClientSecret as oauthCl17_9_0_,
servicereq0_.oauthRequestTokenUrl as oauthRe18_9_0_,
servicereq0_.oauthType as oauthType9_0_,
servicereq0_.class as class9_0_
最佳答案
当列class
存储多个类时,该列会自动添加到表中。如果ServiceRequirement
类具有也是域类的子类,则该表将需要class
列来知道它是哪种ServiceRequirement
。如果设置了dbCreate
,Grails通常很聪明,可以自动添加该列,但是如果您手动管理模式,则需要自己添加。
https://stackoverflow.com/questions/7402310/