Grails:.save(flush:flush, insert:true) 与 .save(flush:true) 有何不同

Question

在spring security生成类UserRole或 SecUserSecRole (你可以随便叫它)有一个命令可以创建 new UserRole()并用 .save(flush:flush, insert:true) 保存它

这意味着什么？它与 .save(flush:true) 有何不同？

Answer 1

来自 Grails docs :

insert (optional) - When set to true will force Hibernate to do a SQL INSERT, this is useful in certain situations when legacy databases (such as AS/400) are involved and Hibernate cannot detect whether to do an INSERT or an UPDATE