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package com.sun.ejb.containers;
import java.util.*;
import javax.ejb.*;
import javax.transaction.*;
import com.sun.enterprise.log.Log;
import java.util.logging.*;
import com.sun.logging.*;
/**
* This class intercepts Synchronization notifications from
* the TransactionManager and forwards them to the appropriate container.
* There is one ContainerSynchronization instance per tx.
* All bean instances (of all types) participating in the tx must be
* added by the container to the ContainerSynchronization, so that
* the beans can be called during before/afterCompletion.
*
* This class also provides special methods for PersistenceManager Sync and
* Timer objects which must be called AFTER the containers during
* before/afterCompletion.
*
*/
final class ContainerSynchronization implements Synchronization
{
private static final Logger _logger =
LogDomains.getLogger(LogDomains.EJB_LOGGER);
private ArrayList beans = new ArrayList();
private Vector pmSyncs = new Vector();
private Hashtable timerSyncs = new Hashtable();
private Transaction tx; // the tx with which this Sync was registered
private ContainerFactoryImpl containerFactory;
private SFSBTxCheckpointCoordinator sfsbTxCoordinator;
// Note: this must be called only after a Tx is begun.
ContainerSynchronization(Transaction tx,
ContainerFactoryImpl containerFactory)
{
this.tx = tx;
this.containerFactory = containerFactory;
}
Vector getBeanList(){
Vector vec = new Vector();
for (Iterator iter = beans.iterator(); iter.hasNext(); ) {
vec.add(iter.next());
}
return vec;
}
void addBean(EJBContextImpl bean)
{
beans.add(bean);
}
void removeBean(EJBContextImpl bean)
{
beans.remove(bean);
}
void addPMSynchronization(Synchronization sync)
{
pmSyncs.add(sync);
}
// Set synchronization object for a particular timer.
void addTimerSynchronization(TimerPrimaryKey timerId, Synchronization sync)
{
timerSyncs.put(timerId, sync);
}
// Might be null if no timer synch object for this timerId in this tx
Synchronization getTimerSynchronization(TimerPrimaryKey timerId) {
return (Synchronization) timerSyncs.get(timerId);
}
void removeTimerSynchronization(TimerPrimaryKey timerId) {
timerSyncs.remove(timerId);
}
public void beforeCompletion()
{
// first call beforeCompletion for each bean instance
for ( int i=0; i<beans.size(); i++ ) {
EJBContextImpl context = (EJBContextImpl)beans.get(i);
BaseContainer container = (BaseContainer)context.getContainer();
try {
if( container != null ) {
if (container.isUndeployed()) {
_logger.log(Level.WARNING, "Marking Tx for rollback "
+ " because container for " + container
+ " is undeployed");
try {
tx.setRollbackOnly();
} catch (SystemException sysEx) {
_logger.log(Level.FINE, "Error while trying to "
+ "mark for rollback", sysEx);
}
} else {
container.beforeCompletion(context);
}
} else {
// Might be null if bean was removed. Just skip it.
_logger.log(Level.FINE, "context with empty container in " +
" ContainerSynchronization.beforeCompletion");
}
} catch ( Exception ex ) {
// rollback the Tx. The client will get
// a EJB/RemoteException or a TransactionRolledbackException.
_logger.log(Level.SEVERE,"ejb.remote_or_txnrollback_exception",ex);
try {
tx.setRollbackOnly();
} catch ( SystemException e ) {
_logger.log(Level.FINE, "", ex);
}
return; // no need to call remaining beforeCompletions
}
}
// now call beforeCompletion for all pmSyncs
for ( int i=0; i<pmSyncs.size(); i++ ) {
Synchronization sync = (Synchronization)pmSyncs.elementAt(i);
try {
sync.beforeCompletion();
} catch ( Exception ex ) {
// rollback the Tx. The client will get
// a EJB/RemoteException or a TransactionRolledbackException.
_logger.log(Level.SEVERE,"ejb.remote_or_txnrollback_exception",ex);
try {
tx.setRollbackOnly();
} catch ( SystemException e ) {
_logger.log(Level.FINE, "", ex);
}
return; // no need to call remaining beforeCompletions
}
}
}
public void afterCompletion(int status)
{
for ( int i=0; i<pmSyncs.size(); i++ ) {
Synchronization sync = (Synchronization)pmSyncs.elementAt(i);
try {
sync.afterCompletion(status);
} catch ( Exception ex ) {
_logger.log(Level.SEVERE, "ejb.after_completion_error", ex);
}
}
// call afterCompletion for each bean instance
for ( int i=0; i<beans.size();i++ ) {
EJBContextImpl context = (EJBContextImpl)beans.get(i);
BaseContainer container = (BaseContainer)context.getContainer();
try {
if( container != null ) {
container.afterCompletion(context, status);
} else {
// Might be null if bean was removed. Just skip it.
_logger.log(Level.FINE, "context with empty container in "
+
" ContainerSynchronization.afterCompletion");
}
} catch ( Exception ex ) {
_logger.log(Level.SEVERE, "ejb.after_completion_error", ex);
}
}
if (sfsbTxCoordinator != null) {
sfsbTxCoordinator.doTxCheckpoint();
}
for ( Iterator iter = timerSyncs.values().iterator();
iter.hasNext(); ) {
Synchronization timerSync = (Synchronization) iter.next();
try {
timerSync.afterCompletion(status);
} catch ( Exception ex ) {
_logger.log(Level.SEVERE, "ejb.after_completion_error", ex);
}
}
// tell ContainerFactory to remove this tx/sync from its table
containerFactory.removeContainerSync(tx);
}
void registerForTxCheckpoint(SessionContextImpl sessionCtx) {
//No need to synchronize
if (sfsbTxCoordinator == null) {
sfsbTxCoordinator = new SFSBTxCheckpointCoordinator();
}
sfsbTxCoordinator.registerContext(sessionCtx);
}
}
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