/** Allocates a connection. */
private Object allocateConnection(
ManagedConnectionFactory mcf, Subject subject, ConnectionRequestInfo info)
throws ResourceException {
UserPoolItem userPoolItem = null;
try {
while (true) {
userPoolItem = null;
UserTransactionImpl transaction = _tm.getUserTransaction();
if (transaction != null) userPoolItem = allocateShared(transaction, mcf, subject, info);
if (userPoolItem == null) userPoolItem = allocatePoolConnection(mcf, subject, info, null);
Object userConn;
userConn = userPoolItem.allocateUserConnection();
if (userConn != null) {
userPoolItem = null;
return userConn;
}
userPoolItem.close();
}
} finally {
if (userPoolItem != null) userPoolItem.close();
}
}
/**
* Notifies that an application has closed the connection.
*
* <p>Remove and close the UserPoolItem associated with the PoolItem. If it's the last
* UserPoolItem, move to the idle state.
*/
public void connectionClosed(ConnectionEvent event) {
Object handle = event.getConnectionHandle();
if (!_hasConnectionError && handle == null && _shareHead != null) {
log.fine(
L.l(
"JCA close event '{0}' for {1} did not have a connection handle. Please notify the JCA resource provider.",
event, _mConn));
}
UserPoolItem ptr = _shareHead;
UserPoolItem prev = null;
while (ptr != null) {
UserPoolItem next = ptr.getShareNext();
Object userConn = ptr.getUserConnection();
if (userConn == handle || handle == null) {
if (prev != null) prev.setShareNext(next);
else _shareHead = next;
ptr.close();
} else prev = ptr;
ptr = next;
}
if (_shareHead == null) {
toIdle();
return;
}
}
/** Closes the connection. */
void destroy() {
ManagedConnection mConn = _mConn;
_mConn = null;
UserTransactionImpl transaction = _transaction;
_transaction = null;
if (mConn == null) return;
_cm.removeItem(this, mConn);
UserPoolItem userItem = _shareHead;
if (log.isLoggable(Level.FINE)) log.fine("connection pool destroy " + this);
try {
while (userItem != null) {
UserPoolItem next = userItem.getShareNext();
userItem.close();
userItem = next;
}
if (transaction != null) transaction.delistPoolItem(this, XAResource.TMFAIL);
} catch (Throwable e) {
log.log(Level.FINE, e.toString(), e);
}
try {
mConn.destroy();
} catch (Exception e) {
log.log(Level.FINE, e.toString(), e);
} finally {
_cm.getConnectionTimeProbe().end(_connectionStartTime);
}
}
