public void end(Xid xid, int flags) throws XAException {
validateXid(xid);
if (state != XA_STATE_STARTED) {
throw new XAException("Invalid XAResource state");
}
try {
connection.setAutoCommit(originalAutoCommitMode); // real/phys.
} catch (SQLException se) {
throw new XAException(se.getMessage());
}
state = XA_STATE_ENDED;
}
/**
* The XAResource API spec indicates implies that this is only for 2-phase transactions. I guess
* that one-phase transactions need to call rollback() to abort.
*
* <p>I think we want this JDBCXAResource instance to be garbage-collectable after (a) this method
* is called, and (b) the tx manager releases its handle to it.
*
* @see javax.transaction.xa.XAResource#forget(Xid)
*/
public void forget(Xid xid) throws XAException {
/**
* Should this method not attempt to clean up the aborted transaction by rolling back or
* something? Maybe the tx manager will already have called rollback() if it were necessasry?
*/
validateXid(xid);
if (state != XA_STATE_PREPARED) {
throw new XAException(
"Attempted to forget a XAResource that " + "is not in a heuristically completed state");
}
dispose();
state = XA_STATE_INITIAL;
}
/**
* Vote on whether to commit the global transaction.
*
* @throws XAException to vote negative.
* @return commitType of XA_RDONLY or XA_OK. (Actually only XA_OK now).
*/
public int prepare(Xid xid) throws XAException {
validateXid(xid);
/**
* @todo: This is where the real 2-phase work should be done to determine if a commit done here
* would succeed or not.
*/
/**
* @todo: May improve performance to return XA_RDONLY whenever possible, but I don't know. Could
* determine this by checking if DB instance is in RO mode, or perhaps (with much
* difficulty) to determine if there have been any modifications performed.
*/
if (state != XA_STATE_ENDED) {
throw new XAException("Invalid XAResource state");
}
// throw new XAException(
// "Sorry. HSQLDB has not implemented 2-phase commits yet");
state = XA_STATE_PREPARED;
return XA_OK; // As noted above, should check non-committed work.
}
