public <ReturnType> ReturnType inTransaction(
TransactionIsolationLevel level, TransactionCallback<ReturnType> callback) {
final TransactionIsolationLevel initial = getTransactionIsolationLevel();
boolean failed = true;
try {
setTransactionIsolation(level);
ReturnType result = transactions.inTransaction(this, level, callback);
failed = false;
return result;
} finally {
try {
setTransactionIsolation(initial);
} catch (RuntimeException e) {
if (!failed) {
throw e;
}
// Ignore, there was already an exceptional condition and we don't want to clobber it.
}
}
}
public void setTransactionIsolation(TransactionIsolationLevel level) {
setTransactionIsolation(level.intValue());
}