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我想“在”子句中使用一个分离标准作为子查询,但不知它不工作:使用的DetachedCriteria的子查询条款
def trades = new DetachedCriteria(Trade).build {
projections { property "tradeNbr" }
}
def activities = Activiies.withCriteria {
'in' "tradeNumber", trades
}
这是我遇到的错误:
2012-11-07 01:07:09,088 [http-bio-8081-exec-1] TRACE sql.BasicBinder - f228562 - binding parameter [1] as [INTEGER] - [email protected]
grails.gorm.DetachedCriteria cannot be cast to java.lang.Integer. Stacktrace follows:
java.lang.ClassCastException: grails.gorm.DetachedCriteria cannot be cast to java.lang.Integer
at grails.orm.HibernateCriteriaBuilder.invokeMethod(HibernateCriteriaBuilder.java:1587)
at org.grails.datastore.gorm.GormStaticApi.withCriteria(GormStaticApi.groovy:282)
detachedCriteria的文档说,list()是一个默认的方法,但显然它没有这样做。我期待“印刷行业”获得交易,但它会打印对象参考。难道我做错了什么? – rks