Handling Transaction

[suddal72]

now i want to handle transaction, so i write service class like this:
public String insertDataDictionary(String xmlParam) {
try {
......
dataDictionaryDao.insertDataDictionary(model);
dataDictionaryDao.deleteDataDictionary(111);
} catch (Exception e) {
return ErrorMessage.errorXml(e);
}
return SuccessMessage.successXml();
}

when i didn't use try... catch , roll back is perfect..

but when i used tyr ..catch , rollback didn't work..
how can i make service class..???

** this is DAO class ***
public void deleteDataDictionary(int wordno){
int result = this.executeUpdate("DataDictionary.deleteDataDicti onary", new Integer(
wordno));
if (result == 0)
new RuntimeException("There is no data !! ");
}

[katentim]

when i didn't use try... catch , roll back is perfect..

You need to throw a RuntimeException or a checked exception with a rollback rule (which is why it worked without a try...catch). Otherwise you have to do progrommatic transaction rollback.