public void arrayChanged(TCObject source, int startPos, Object array, int length) {
if (isTransactionLoggingDisabled()) {
return;
}
try {
disableTransactionLogging();
Object pojo = source.getPeerObject();
ClientTransaction tx = getTransaction(pojo);
if (!ClassUtils.isPrimitiveArray(array)) {
Object[] objArray = (Object[]) array;
for (int i = 0; i < length; i++) {
Object element = objArray[i];
if (!literalValues.isLiteralInstance(element)) {
if (element != null)
objectManager.checkPortabilityOfField(element, String.valueOf(i), pojo);
TCObject tco = objectManager.lookupOrCreate(element);
objArray[i] = tco.getObjectID();
// record the reference in this transaction -- This is to solve the race condition of
// transactions
// that reference objects newly "created" in other transactions that may not commit
// before us
if (element != null) tx.createObject(tco);
}
}
}
tx.arrayChanged(source, startPos, array, length);
} finally {
enableTransactionLogging();
}
}
/**
* In order to support ReentrantLock, the TransactionContext that is going to be removed when
* doing a commit may not always be at the top of a stack because an reentrant lock could issue a
* lock within a synchronized block (although it is highly not recommended). Therefore, when a
* commit is issued, we need to search back the stack from the top of the stack to find the
* appropriate TransactionContext to be removed. Most likely, the TransactionContext to be removed
* will be on the top of the stack. Therefore, the performance should be make must difference.
* Only in some weird situations where reentrantLock is mixed with synchronized block will the
* TransactionContext to be removed be found otherwise.
*/
public void commit(String lockName) throws UnlockedSharedObjectException {
logCommit0();
if (isTransactionLoggingDisabled() || objectManager.isCreationInProgress()) {
return;
}
// ClientTransaction tx = popTransaction();
ClientTransaction tx = getTransaction();
LockID lockID = lockManager.lockIDFor(lockName);
if (lockID == null || lockID.isNull()) {
lockID = tx.getLockID();
}
boolean hasCommitted = commit(lockID, tx, false);
popTransaction(lockManager.lockIDFor(lockName));
if (peekContext() != null) {
if (hasCommitted) {
createTxAndInitContext();
} else {
// If the current transaction has not committed, we will reuse the current transaction
// so that the current changes will have a chance to commit at the next commit point.
tx.setTransactionContext(peekContext());
setTransaction(tx);
}
}
}
public boolean tryBegin(String lockName, WaitInvocation timeout, int lockLevel) {
logTryBegin0(lockName, lockLevel);
if (isTransactionLoggingDisabled() || objectManager.isCreationInProgress()) {
return true;
}
final TxnType txnType = getTxnTypeFromLockLevel(lockLevel);
ClientTransaction currentTransaction = getTransactionOrNull();
if ((currentTransaction != null) && lockLevel == LockLevel.CONCURRENT) {
// make formatter sane
throw new AssertionError("Can't acquire concurrent locks in a nested lock context.");
}
final LockID lockID = lockManager.lockIDFor(lockName);
boolean isLocked = lockManager.tryLock(lockID, timeout, lockLevel);
if (!isLocked) {
return isLocked;
}
pushTxContext(lockID, txnType);
if (currentTransaction == null) {
createTxAndInitContext();
} else {
currentTransaction.setTransactionContext(this.peekContext());
}
return isLocked;
}
// This can be overridden by subclass if you want different behavior.
protected Object getObjectForKey(final ClientObjectManager objectManager, final Object k)
throws ClassNotFoundException {
try {
return (k instanceof ObjectID ? objectManager.lookupObject((ObjectID) k) : k);
} catch (AbortedOperationException e) {
throw new TCRuntimeException(e);
}
}
// This can be overridden by subclass if you want different behavior.
private Object getObjectForValue(final ClientObjectManager objectManager, final Object v)
throws ClassNotFoundException {
try {
return (v instanceof ObjectID ? objectManager.lookupObject((ObjectID) v) : v);
} catch (AbortedOperationException e) {
throw new TCRuntimeException(e);
}
}
private boolean commitInternal(
LockID lockID, ClientTransaction currentTransaction, boolean isWaitContext) {
Assert.assertNotNull("transaction", currentTransaction);
try {
disableTransactionLogging();
// If the current transactionContext is READ_ONLY, there is no need to commit.
TransactionContext tc = peekContext(lockID);
if (tc.getType().equals(TxnType.READ_ONLY)) {
txMonitor.committedReadTransaction();
return false;
}
boolean hasPendingCreateObjects = objectManager.hasPendingCreateObjects();
if (hasPendingCreateObjects) {
objectManager.addPendingCreateObjectsToTransaction();
}
currentTransaction.setAlreadyCommitted();
if (currentTransaction.hasChangesOrNotifies() || hasPendingCreateObjects) {
if (txMonitor.isEnabled()) {
currentTransaction.updateMBean(txMonitor);
}
remoteTxManager.commit(currentTransaction);
}
return true;
} finally {
enableTransactionLogging();
// always try to unlock even if we are throwing an exception
// if (!isWaitContext && !currentTransaction.isNull()) {
// lockManager.unlock(currentTransaction.getLockID());
// }
if (!isWaitContext && !currentTransaction.isNull()) {
if (lockID != null && !lockID.isNull()) {
lockManager.unlock(lockID);
} else {
throw new AssertionError("Trying to unlock with lockID = null!");
}
}
}
}
private void basicApply(Collection objectChanges, Map newRoots, boolean force)
throws DNAException {
List l = new LinkedList();
for (Iterator i = objectChanges.iterator(); i.hasNext(); ) {
DNA dna = (DNA) i.next();
TCObject tcobj = null;
Assert.assertTrue(dna.isDelta());
try {
// This is a major hack to prevent distributed method calls
// sent to apps that don't have the right classes from dying
// This should be fixed in a better way some day :-)
objectManager.getClassFor(
Namespace.parseClassNameIfNecessary(dna.getTypeName()),
dna.getDefiningLoaderDescription());
tcobj = objectManager.lookup(dna.getObjectID());
} catch (ClassNotFoundException cnfe) {
logger.warn("Could not apply change because class not local:" + dna.getTypeName());
continue;
}
// Important to have a hard reference to the object while we apply
// changes so that it doesn't get gc'd on us
Object obj = tcobj == null ? null : tcobj.getPeerObject();
l.add(obj);
if (obj != null) {
try {
tcobj.hydrate(dna, force);
} catch (ClassNotFoundException cnfe) {
logger.warn("Could not apply change because class not local:" + cnfe.getMessage());
throw new TCClassNotFoundException(cnfe);
}
}
}
for (Iterator i = newRoots.entrySet().iterator(); i.hasNext(); ) {
Entry entry = (Entry) i.next();
String rootName = (String) entry.getKey();
ObjectID newRootID = (ObjectID) entry.getValue();
objectManager.replaceRootIDIfNecessary(rootName, newRootID);
}
}
public void logicalInvoke(TCObject source, int method, String methodName, Object[] parameters) {
if (isTransactionLoggingDisabled()) {
return;
}
try {
disableTransactionLogging();
Object pojo = source.getPeerObject();
ClientTransaction tx = getTransaction(pojo);
for (int i = 0; i < parameters.length; i++) {
Object p = parameters[i];
boolean isLiteral = literalValues.isLiteralInstance(p);
if (!isLiteral) {
if (p != null) {
objectManager.checkPortabilityOfLogicalAction(parameters, i, methodName, pojo);
}
TCObject tco = objectManager.lookupOrCreate(p);
parameters[i] = tco.getObjectID();
if (p != null) {
// record the reference in this transaction -- This is to solve the race condition of
// transactions
// that reference objects newly "created" in other transactions that may not commit
// before us
tx.createObject(tco);
}
}
}
tx.logicalInvoke(source, method, parameters, methodName);
} finally {
enableTransactionLogging();
}
}
public void fieldChanged(
TCObject source, String classname, String fieldname, Object newValue, int index) {
if (isTransactionLoggingDisabled()) {
return;
}
try {
disableTransactionLogging();
Object pojo = source.getPeerObject();
ClientTransaction tx = getTransaction(pojo);
logFieldChanged0(source, classname, fieldname, newValue, tx);
if (newValue != null && literalValues.isLiteralInstance(newValue)) {
tx.fieldChanged(source, classname, fieldname, newValue, index);
} else {
if (newValue != null) {
objectManager.checkPortabilityOfField(newValue, fieldname, pojo);
}
TCObject tco = objectManager.lookupOrCreate(newValue);
tx.fieldChanged(source, classname, fieldname, tco.getObjectID(), index);
// record the reference in this transaction -- This is to solve the race condition of
// transactions
// that reference objects newly "created" in other transactions that may not commit before
// us
if (newValue != null) {
tx.createObject(tco);
}
}
} finally {
enableTransactionLogging();
}
}
protected void apply(
final ClientObjectManager objectManager,
final Object po,
final LogicalOperation method,
final Object[] params)
throws ClassNotFoundException {
final ToolkitMapImpl m = (ToolkitMapImpl) po;
switch (method) {
case PUT:
final Object k = params[0];
final Object v = params[1];
final Object pkey = getObjectForKey(objectManager, k);
final Object value = getObjectForValue(objectManager, v);
m.internalPut(pkey, value);
break;
case REMOVE:
Object rkey;
try {
rkey =
params[0] instanceof ObjectID
? objectManager.lookupObject((ObjectID) params[0])
: params[0];
} catch (AbortedOperationException e) {
throw new TCRuntimeException(e);
}
m.internalRemove(rkey);
break;
case CLEAR:
m.internalClear();
break;
case DESTROY:
((DestroyApplicator) m).applyDestroy();
break;
default:
throw new AssertionError("invalid action:" + method);
}
}
public boolean begin(String lockName, int lockLevel) {
logBegin0(lockName, lockLevel);
if (isTransactionLoggingDisabled() || objectManager.isCreationInProgress()) {
return false;
}
final TxnType txnType = getTxnTypeFromLockLevel(lockLevel);
ClientTransaction currentTransaction = getTransactionOrNull();
final LockID lockID = lockManager.lockIDFor(lockName);
pushTxContext(lockID, txnType);
if (currentTransaction == null) {
createTxAndInitContext();
} else {
currentTransaction.setTransactionContext(this.peekContext());
}
lockManager.lock(lockID, lockLevel);
return true;
}
