我有2个表,AND
和testInput
,而testCases
我有一个FK,其ID为另一个表。
所以基本上我要删除的行是输入的id,testCase的id,名称和描述。
testInput
我试图删除该行,然后我
java.sql.SQLIntegrityConstraintViolationException:无法删除或 更新父行:外键约束失败 (
'43', '21', 'USERNAME', 'USERNAME' '44', '21', 'PASSWORD', 'PASSWORD'
。mydb
,CONSTRAINTtestInput
外键(fk02
) 参考testCase
(testCases
)ON更新没有动作更新NO ACTION)
我不想删除testCase的记录。我只想删除该testCase的输入。我该怎么办?
如果你想要代码
idtestCase
xml TestCases
List<TestInput> previousInputs = TestInput.getInputs(testCaseName);
for(TestInput in : previousInputs) {
Database.deleteObject(in);
}
//delete the object to the database
public static void deleteObject(Object object) {
SessionFactory factory = HibernateUtil.getSessionFactory();
Session session = factory.openSession();
Transaction tx = null;
try{
tx = session.beginTransaction();
session.delete(object);
tx.commit();
}catch (HibernateException e) {
if (tx!=null) tx.rollback();
e.printStackTrace();
}finally {
session.close();
}
}
xml testInput
<hibernate-mapping>
<class name="TestCase" table="testCases">
<meta attribute="class-description">
This class contains the testCases details.
</meta>
<id name="id" type="int" column="idtestCase">
<generator class="native"/>
</id>
<property name="name" column="name" type="string"/>
<many-to-one name="type" class="TestType" column="type" fetch="select" lazy="false"/>
<property name="data" column="data" type="binary"/>
<property name="amountOfInputs" column="amountOfInputs" type="int"/>
<property name="creationDate" column="creationDate" type="string"/>
<property name="createdBy" column="createdBy" type="string"/>
<many-to-one name="tellerConfig" class="TellerConfiguration" column="tellerConfig" fetch="select" lazy="false"/>
</class>
</hibernate-mapping>
答案 0 :(得分:0)
将外键fk02上的约束从'NO ACTION'更改为'SET NULL'
FOREIGN KEY (idtestcase)
REFERENCES testCases(idtestCase)
ON DELETE SET NULL