/**
* Rolls back the current transaction. This call has only an effect if auto commit is switched
* off.
*
* @throws SQLException if the connection is closed
*/
public synchronized void rollback() throws SQLException {
try {
debugCodeCall("rollback");
checkClosedForWrite();
try {
rollbackInternal();
} finally {
afterWriting();
}
} catch (Exception e) {
throw logAndConvert(e);
}
}
// ## Java 1.4 begin ##
public void rollback(Savepoint savepoint) throws SQLException {
try {
JdbcSavepoint sp = convertSavepoint(savepoint);
debugCode("rollback(" + sp.getTraceObjectName() + ");");
checkClosedForWrite();
try {
sp.rollback();
} finally {
afterWriting();
}
} catch (Exception e) {
throw logAndConvert(e);
}
}
/**
* Commits the current transaction. This call has only an effect if auto commit is switched off.
*
* @throws SQLException if the connection is closed
*/
public synchronized void commit() throws SQLException {
try {
debugCodeCall("commit");
checkClosedForWrite();
try {
commit = prepareCommand("COMMIT", commit);
commit.executeUpdate();
} finally {
afterWriting();
}
} catch (Exception e) {
throw logAndConvert(e);
}
}
// ## Java 1.6 begin ##
public NClob createNClob() throws SQLException {
try {
int id = getNextId(TraceObject.CLOB);
debugCodeAssign("NClob", TraceObject.CLOB, id, "createNClob()");
checkClosedForWrite();
try {
Value v =
session
.getDataHandler()
.getLobStorage()
.createClob(new InputStreamReader(new ByteArrayInputStream(Utils.EMPTY_BYTES)), 0);
return new JdbcClob(this, v, id);
} finally {
afterWriting();
}
} catch (Exception e) {
throw logAndConvert(e);
}
}
/** Called after each write operation. */
void afterWriting() {
if (conn != null) {
conn.afterWriting();
}
}