public synchronized void xaPrepare(final Xid xid) throws Exception {
if (tx != null && tx.getXid().equals(xid)) {
final String msg =
"Cannot commit, session is currently doing work in a transaction " + tx.getXid();
throw new HornetQXAException(XAException.XAER_PROTO, msg);
} else {
Transaction theTx = resourceManager.getTransaction(xid);
if (isTrace) {
HornetQLogger.LOGGER.trace("xaprepare into " + ", xid=" + xid + ", tx= " + tx);
}
if (theTx == null) {
final String msg = "Cannot find xid in resource manager: " + xid;
throw new HornetQXAException(XAException.XAER_NOTA, msg);
} else {
if (theTx.getState() == Transaction.State.SUSPENDED) {
throw new HornetQXAException(
XAException.XAER_PROTO, "Cannot prepare transaction, it is suspended " + xid);
} else if (theTx.getState() == Transaction.State.PREPARED) {
HornetQLogger.LOGGER.info("ignoring prepare on xid as already called :" + xid);
} else {
theTx.prepare();
}
}
}
}
public synchronized void xaResume(final Xid xid) throws Exception {
if (tx != null) {
final String msg =
"Cannot resume, session is currently doing work in a transaction " + tx.getXid();
throw new HornetQXAException(XAException.XAER_PROTO, msg);
} else {
Transaction theTx = resourceManager.getTransaction(xid);
if (theTx == null) {
final String msg = "Cannot find xid in resource manager: " + xid;
throw new HornetQXAException(XAException.XAER_NOTA, msg);
} else {
if (theTx.getState() != Transaction.State.SUSPENDED) {
throw new HornetQXAException(
XAException.XAER_PROTO, "Cannot resume transaction, it is not suspended " + xid);
} else {
tx = theTx;
tx.resume();
}
}
}
}
public synchronized void xaJoin(final Xid xid) throws Exception {
Transaction theTx = resourceManager.getTransaction(xid);
if (theTx == null) {
final String msg = "Cannot find xid in resource manager: " + xid;
throw new HornetQXAException(XAException.XAER_NOTA, msg);
} else {
if (theTx.getState() == Transaction.State.SUSPENDED) {
throw new HornetQXAException(
XAException.XAER_PROTO, "Cannot join tx, it is suspended " + xid);
} else {
tx = theTx;
}
}
}
public synchronized void xaEnd(final Xid xid) throws Exception {
if (tx != null && tx.getXid().equals(xid)) {
if (tx.getState() == Transaction.State.SUSPENDED) {
final String msg = "Cannot end, transaction is suspended";
throw new HornetQXAException(XAException.XAER_PROTO, msg);
} else if (tx.getState() == Transaction.State.ROLLEDBACK) {
final String msg = "Cannot end, transaction is rolled back";
tx = null;
throw new HornetQXAException(XAException.XAER_PROTO, msg);
} else {
tx = null;
}
} else {
// It's also legal for the TM to call end for a Xid in the suspended
// state
// See JTA 1.1 spec 3.4.4 - state diagram
// Although in practice TMs rarely do this.
Transaction theTx = resourceManager.getTransaction(xid);
if (theTx == null) {
final String msg = "Cannot find suspended transaction to end " + xid;
throw new HornetQXAException(XAException.XAER_NOTA, msg);
} else {
if (theTx.getState() != Transaction.State.SUSPENDED) {
final String msg = "Transaction is not suspended " + xid;
throw new HornetQXAException(XAException.XAER_PROTO, msg);
} else {
theTx.resume();
}
}
}
}