[Grails] 【急】关于Grails级联删除
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cuttlefish
2008-11-17
单向One-to-One 无法级联删除
Domain Class:
class Parent {
}
class Child {
static belongsTo = [parent:Parent]
}
class ParentTests extends GroovyTestCase {
void testSomething() {
def p = new Parent().save()
assertEquals(1,Parent.count())
def c = new Child(parent:p).save()
assertEquals(1,Child.count())
p.delete()
assertEquals(0,Parent.count())
assertEquals(0,Child.count())
}
}
错误： org.hibernate.exception.ConstraintViolationException: could not delete: [Parent#1] ... Caused by: java.sql.SQLException: Integrity constraint violation FK5A3F51C976A59A table: CHILD in statement [delete from parent where id=? and version=?] at org.hsqldb.jdbc.Util.throwError(Unknown Source) at org.hsqldb.jdbc.jdbcPreparedStatement.executeUpdate(Unknown Source) |
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令狐虫
2008-11-17
改为双向的吧：
class Parent{
Child child
}
class Child {
static belongsTo = [parent:Parent]
}
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cuttlefish
2008-11-17
改成双向后可以删除，但是没有级联删除。。。
junit.framework.AssertionFailedError: expected:<0> but was:<1> |
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令狐虫
2008-11-17
p.delete(flush:true)
试试 |
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cuttlefish
2008-11-17
还是一样……不行……
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令狐虫
2008-11-17
应该行呀
我来试试看 |
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cuttlefish
2008-11-17
好的谢谢啦
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令狐虫
2008-11-17
测试用例有问题
我改一下就通过了： class ParentTests extends GroovyTestCase {
void testSomething() {
def c = new Child()
def p = new Parent(child:c)
p.save(flush:true)
assertEquals(1,Parent.count())
assertEquals(1,Child.count())
p.delete(flush:true)
assertEquals(0,Parent.count())
assertEquals(0,Child.count())
}
}
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