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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
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*
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* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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*
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* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
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// Portions Copyright [2016-2019] [Payara Foundation and/or its affiliates.]
package com.sun.ejb.containers;
import com.sun.ejb.Container;
import com.sun.ejb.EjbInvocation;
import com.sun.enterprise.deployment.MethodDescriptor;
import com.sun.enterprise.transaction.api.JavaEETransaction;
import com.sun.enterprise.transaction.api.JavaEETransactionManager;
import com.sun.enterprise.util.LocalStringManagerImpl;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ejb.EJBException;
import javax.ejb.NoSuchEntityException;
import javax.ejb.NoSuchObjectLocalException;
import javax.ejb.TransactionRequiredLocalException;
import javax.ejb.TransactionRolledbackLocalException;
import javax.transaction.RollbackException;
import javax.transaction.Status;
import javax.transaction.SystemException;
import javax.transaction.Transaction;
import javax.transaction.UserTransaction;
import org.glassfish.ejb.deployment.descriptor.ContainerTransaction;
import org.glassfish.ejb.deployment.descriptor.EjbApplicationExceptionInfo;
import org.glassfish.ejb.deployment.descriptor.EjbDescriptor;
import org.glassfish.ejb.deployment.descriptor.runtime.IASEjbExtraDescriptors;
/**
* Container support for handling transactions
*
* @author mvatkina
*/
public class EJBContainerTransactionManager {
private static final Logger LOG = EjbContainerUtilImpl.getLogger();
private static final String USER_TX = "java:comp/UserTransaction";
private final EjbContainerUtil ejbContainerUtilImpl = EjbContainerUtilImpl.getInstance();
private final JavaEETransactionManager transactionManager;
private final BaseContainer container;
private final EjbDescriptor ejbDescriptor;
private final int cmtTimeoutInSeconds;
/**
* Construct new instance and set basic references
*/
EJBContainerTransactionManager(Container c, EjbDescriptor ejbDesc) {
container = (BaseContainer)c;
ejbDescriptor = ejbDesc;
transactionManager = ejbContainerUtilImpl.getTransactionManager();
final IASEjbExtraDescriptors iased = ejbDesc.getIASEjbExtraDescriptors();
cmtTimeoutInSeconds = iased.getCmtTimeoutInSeconds();
}
/**
* Calculate for the transaction attribute for a method.
* This is only used during container initialization. After that,
* tx attributes can be looked up with variations of getTxAttr()
*/
int findTxAttr(MethodDescriptor md) {
if (container.isBeanManagedTran) {
return Container.TX_BEAN_MANAGED;
}
final int txAttr = getTransactionAttribute(md);
if (txAttr < 0) {
throw new EJBException("Transaction Attribute not found for method " + md.prettyPrint());
}
container.validateTxAttr(md, txAttr);
return txAttr;
}
private int getTransactionAttribute(final MethodDescriptor md) {
final ContainerTransaction containerTx = ejbDescriptor.getContainerTransactionFor(md);
if (containerTx == null) {
return -1;
}
final String attr = containerTx.getTransactionAttribute();
if (attr.equals(ContainerTransaction.NOT_SUPPORTED)) {
return Container.TX_NOT_SUPPORTED;
} else if (attr.equals(ContainerTransaction.SUPPORTS)) {
return Container.TX_SUPPORTS;
} else if (attr.equals(ContainerTransaction.REQUIRED)) {
return Container.TX_REQUIRED;
} else if (attr.equals(ContainerTransaction.REQUIRES_NEW)) {
return Container.TX_REQUIRES_NEW;
} else if (attr.equals(ContainerTransaction.MANDATORY)) {
return Container.TX_MANDATORY;
} else if (attr.equals(ContainerTransaction.NEVER)) {
return Container.TX_NEVER;
} else {
return -2;
}
}
/**
* Handle transaction requirements, if any, before invoking bean method
*/
final void preInvokeTx(EjbInvocation inv) throws Exception {
LOG.finest(() -> String.format("preInvokeTx(inv=%s)", inv));
// Get existing Tx status: this tells us if the client
// started a transaction which was propagated on this invocation.
final Integer preInvokeTxStatus = inv.getPreInvokeTxStatus();
final int status = preInvokeTxStatus == null ? transactionManager.getStatus() : preInvokeTxStatus.intValue();
// For MessageDrivenBeans,ejbCreate/ejbRemove must be called without a Tx.
// For StatelessSessionBeans, ejbCreate/ejbRemove must be called without a Tx.
// For StatefullSessionBeans ejbCreate/ejbRemove/ejbFind can be called with or without a Tx.
// For EntityBeans, ejbCreate/ejbRemove/ejbFind must be called with a Tx so no special work needed.
if (container.suspendTransaction(inv)) {
// EJB2.0 section 7.5.7 says that ejbCreate/ejbRemove etc are called
// without a Tx. So suspend the client's Tx if any.
// Note: ejbRemove cannot be called when EJB is associated with
// a Tx, according to EJB2.0 section 7.6.4. This check is done in
// the container's implementation of removeBean().
if (status != Status.STATUS_NO_TRANSACTION) {
// client request is associated with a Tx
try {
inv.clientTx = transactionManager.suspend();
} catch (SystemException ex) {
throw new EJBException(ex);
}
}
return;
}
// isNullTx is true if the client sent a null tx context
// (i.e. a tx context with a null Coordinator objref)
// or if this server's tx interop mode flag is false.
// Follow the tables in EJB2.0 sections 19.6.2.2.1 and 19.6.2.2.2.
final boolean isNullTx = inv.isRemote ? transactionManager.isNullTransaction() : false;
final int txAttr = container.getTxAttr(inv);
final EJBContextImpl context = (EJBContextImpl)inv.context;
// Note: in the code below, inv.clientTx is set ONLY if the
// client's Tx is actually suspended.
// get the Tx associated with the EJB from previous invocation,
// if any.
final Transaction prevTx = context.getTransaction();
switch (txAttr) {
case Container.TX_BEAN_MANAGED:
// TX_BEAN_MANAGED rules from EJB2.0 Section 17.6.1, Table 13
// Note: only MDBs and SessionBeans can be TX_BEAN_MANAGED
if (status != Status.STATUS_NO_TRANSACTION) {
// client request associated with a Tx, always suspend
inv.clientTx = transactionManager.suspend();
}
if (container.isStatefulSession && prevTx != null
&& prevTx.getStatus() != Status.STATUS_NO_TRANSACTION ) {
// Note: if prevTx != null , then it means
// afterCompletion was not called yet for the
// previous transaction on the EJB.
// The EJB was previously associated with a Tx which was
// begun by the EJB itself in a previous invocation.
// This is only possible for stateful SessionBeans
// not for StatelessSession or Entity.
transactionManager.resume(prevTx);
// This allows the TM to enlist resources
// used by the EJB with the transaction
transactionManager.enlistComponentResources();
}
break;
case Container.TX_NOT_SUPPORTED:
if (status != Status.STATUS_NO_TRANSACTION) {
inv.clientTx = transactionManager.suspend();
}
container.checkUnfinishedTx(prevTx, inv);
container.preInvokeNoTx(inv);
break;
case Container.TX_MANDATORY:
if (isNullTx || status == Status.STATUS_NO_TRANSACTION) {
throw new TransactionRequiredLocalException();
}
useClientTx(prevTx, inv);
break;
case Container.TX_REQUIRED:
if (isNullTx) {
throw new TransactionRequiredLocalException();
}
if (status == Status.STATUS_NO_TRANSACTION) {
inv.clientTx = null;
startNewTx(prevTx, inv);
} else { // There is a client Tx
inv.clientTx = transactionManager.getTransaction();
useClientTx(prevTx, inv);
}
break;
case Container.TX_REQUIRES_NEW:
if (status != Status.STATUS_NO_TRANSACTION) {
inv.clientTx = transactionManager.suspend();
}
startNewTx(prevTx, inv);
break;
case Container.TX_SUPPORTS:
if (isNullTx) {
throw new TransactionRequiredLocalException();
}
if (status != Status.STATUS_NO_TRANSACTION) {
useClientTx(prevTx, inv);
} else { // we need to invoke the EJB with no Tx.
container.checkUnfinishedTx(prevTx, inv);
container.preInvokeNoTx(inv);
}
break;
case Container.TX_NEVER:
if (isNullTx || status != Status.STATUS_NO_TRANSACTION) {
throw new EJBException("EJB cannot be invoked in global transaction");
}
container.checkUnfinishedTx(prevTx, inv);
container.preInvokeNoTx(inv);
break;
default:
throw new EJBException("Bad transaction attribute");
}
}
/**
* Start a CMT transaction, enlist resources, and call afterBegin, which is a
* no-op in those containers that do not need this callback
*/
private void startNewTx(Transaction prevTx, EjbInvocation inv) throws Exception {
LOG.finest(() -> String.format("startNewTx(prevTx=%s, inv=%s)", prevTx, inv));
container.checkUnfinishedTx(prevTx, inv);
if (cmtTimeoutInSeconds > 0) {
transactionManager.begin(cmtTimeoutInSeconds);
} else {
transactionManager.begin();
}
EJBContextImpl context = (EJBContextImpl) inv.context;
Transaction tx = transactionManager.getTransaction();
if (!container.isSingleton) {
context.setTransaction(tx);
}
// This allows the TM to enlist resources used by the EJB
// with the transaction
transactionManager.enlistComponentResources();
// register synchronization for methods other than finders/home methods
if (!inv.invocationInfo.isHomeFinder) {
// Register for Synchronization notification
ejbContainerUtilImpl.getContainerSync(tx).addBean(context);
}
// Call afterBegin/ejbLoad. If ejbLoad throws exceptions,
// the completeNewTx machinery called by postInvokeTx
// will rollback the tx. Since we have already registered
// a Synchronization object with the TM, the afterCompletion
// will get called.
container.afterBegin(context);
}
/**
* Use caller transaction to execute a bean method
*/
protected void useClientTx(Transaction prevTx, EjbInvocation inv) {
LOG.finest(() -> String.format("useClientTx(prevTx=%s, inv=%s)", prevTx, inv));
final Transaction clientTx;
final int status;
final int prevStatus;
try {
// Note: inv.clientTx will not be set at this point.
clientTx = transactionManager.getTransaction();
status = clientTx.getStatus(); // clientTx cant be null
if (prevTx == null) {
prevStatus = -1;
} else {
prevStatus = prevTx.getStatus();
}
} catch (Exception ex) {
final TransactionRolledbackLocalException toThrow = new TransactionRolledbackLocalException(ex.getMessage(), ex);
try {
transactionManager.setRollbackOnly();
} catch (Exception e) {
toThrow.addSuppressed(ex);
}
throw toThrow;
}
// If the client's tx is going to rollback, it is fruitless
// to invoke the EJB, so throw an exception back to client.
if (status == Status.STATUS_MARKED_ROLLBACK //
|| status == Status.STATUS_ROLLEDBACK //
|| status == Status.STATUS_ROLLING_BACK) {
throw new TransactionRolledbackLocalException("Client's transaction aborted");
}
container.validateEMForClientTx(inv, (JavaEETransaction) clientTx);
if (prevTx == null || prevStatus == Status.STATUS_NO_TRANSACTION) {
// First time the bean is running in this new client Tx
EJBContextImpl context = (EJBContextImpl)inv.context;
//Must change this for singleton
if (!container.isSingleton) {
context.setTransaction(clientTx);
}
try {
transactionManager.enlistComponentResources();
if ( !container.isStatelessSession && !container.isMessageDriven && !container.isSingleton) {
// Create a Synchronization object.
// Not needed for stateless beans or message-driven beans
// or singletons because they cant have Synchronization callbacks,
// and they cant be associated with a tx across
// invocations.
// Register sync for methods other than finders/home methods
if ( !inv.invocationInfo.isHomeFinder ) {
ejbContainerUtilImpl.getContainerSync(clientTx).addBean(
context);
}
container.afterBegin(context);
}
} catch (Exception ex) {
final TransactionRolledbackLocalException toThrow = new TransactionRolledbackLocalException("", ex);
try {
transactionManager.setRollbackOnly();
} catch (Exception e) {
toThrow.addSuppressed(e);
}
throw toThrow;
}
} else { // Bean already has a transaction associated with it.
if (!prevTx.equals(clientTx)) {
// There is already a different Tx in progress !!
// Note: this can only happen for stateful SessionBeans.
// EntityBeans will get a different context for every Tx.
if (container.isSession) {
// Row 2 in Table E
throw new IllegalStateException("EJB is already associated with an incomplete transaction");
}
} else { // Bean was invoked again with the same transaction
// This allows the TM to enlist resources used by the EJB
// with the transaction
try {
transactionManager.enlistComponentResources();
} catch (Exception ex) {
final TransactionRolledbackLocalException toThrow = new TransactionRolledbackLocalException("", ex);
try {
transactionManager.setRollbackOnly();
} catch (Exception e) {
toThrow.addSuppressed(e);
}
throw toThrow;
}
}
}
}
/**
* Handle transaction requirements, if any, after invoking bean method
*/
protected void postInvokeTx(EjbInvocation inv) throws Exception {
LOG.finest(() -> String.format("postInvokeTx(inv=%s)", inv));
// For StatelessSessionBeans, ejbCreate/ejbRemove was called without a Tx,
// so resume client's Tx if needed.
// For StatefulSessionBeans ejbCreate/ejbRemove was called with or without a Tx,
// so resume client's Tx if needed.
// For EntityBeans, ejbCreate/ejbRemove/ejbFind must be called with a Tx
// so no special processing needed.
if (container.resumeTransaction(inv)) {
// check if there was a suspended client Tx
if (inv.clientTx != null) {
transactionManager.resume(inv.clientTx);
}
if (inv.exception != null && inv.exception instanceof BaseContainer.PreInvokeException) {
inv.exception = inv.exception.getCause();
}
return;
}
EJBContextImpl context = (EJBContextImpl)inv.context;
final int status = transactionManager.getStatus();
final int txAttr = inv.invocationInfo.txAttr;
final Throwable oriException = inv.exception;
// Note: inv.exception may have been thrown by the container
// during preInvoke (i.e. bean may never have been invoked).
// Exception and Tx handling rules. See EJB2.0 Sections 17.6, 18.3.
final Throwable newException;
switch (txAttr) {
case Container.TX_BEAN_MANAGED:
// EJB2.0 section 18.3.1, Table 16
// Note: only SessionBeans can be TX_BEAN_MANAGED
newException = checkExceptionBeanMgTx(context, oriException, status);
if (inv.clientTx != null) {
// there was a client Tx which was suspended
transactionManager.resume(inv.clientTx);
}
break;
case Container.TX_NOT_SUPPORTED:
case Container.TX_NEVER:
// NotSupported and Never are handled in the same way
// EJB2.0 sections 17.6.2.1, 17.6.2.6.
// EJB executed in no Tx
newException = checkExceptionNoTx(context, oriException);
container.postInvokeNoTx(inv);
if (inv.clientTx != null) {
// there was a client Tx which was suspended
transactionManager.resume(inv.clientTx);
}
break;
case Container.TX_MANDATORY:
// EJB2.0 section 18.3.1, Table 15
// EJB executed in client's Tx
newException = checkExceptionClientTx(context, oriException);
break;
case Container.TX_REQUIRED:
// EJB2.0 section 18.3.1, Table 15
if (inv.clientTx == null) {
// EJB executed in new Tx started in preInvokeTx
newException = completeNewTx(context, oriException, status);
} else {
// EJB executed in client's tx
newException = checkExceptionClientTx(context, oriException);
}
break;
case Container.TX_REQUIRES_NEW:
// EJB2.0 section 18.3.1, Table 15
// EJB executed in new Tx started in preInvokeTx
newException = completeNewTx(context, oriException, status);
if (inv.clientTx != null) {
// there was a client Tx which was suspended
transactionManager.resume(inv.clientTx);
}
break;
case Container.TX_SUPPORTS:
// EJB2.0 section 18.3.1, Table 15
if (status != Status.STATUS_NO_TRANSACTION) {
// EJB executed in client's tx
newException = checkExceptionClientTx(context, oriException);
} else {
// EJB executed in no Tx
newException = checkExceptionNoTx(context, oriException);
container.postInvokeNoTx(inv);
}
break;
default:
newException = oriException;
}
inv.exception = newException;
// XXX If any of the TM commit/rollback/suspend calls throws an
// exception, should the transaction be rolled back if not already so ?
}
final UserTransaction getUserTransaction() {
// Only session beans with bean-managed transactions
// or message-driven beans with bean-managed transactions
// can programmatically demarcate transactions.
if ((container.isSession || container.isMessageDriven) && container.isBeanManagedTran) {
try {
return (UserTransaction) container.namingManager.getInitialContext().lookup(USER_TX);
} catch (Exception ex) {
final String message = LOG.getResourceBundle().getString("ejb.user_transaction_exception");
throw new EJBException(message, ex);
}
}
final LocalStringManagerImpl localStrings = new LocalStringManagerImpl(EJBContainerTransactionManager.class);
throw new IllegalStateException( //
localStrings.getLocalString( //
"ejb.ut_only_for_bmt", "Only session beans with bean-managed transactions can obtain UserTransaction"));
}
private Throwable checkExceptionBeanMgTx(EJBContextImpl context, Throwable exception, int status) throws Exception {
LOG.finest(() -> String.format("checkExceptionBeanMgTx(context=%s, exception=%s, status=%s)", //
context, exception, status));
// EJB2.0 section 18.3.1, Table 16
if (exception != null && exception instanceof BaseContainer.PreInvokeException) {
// A PreInvokeException was thrown, so bean was not invoked
return exception.getCause();
} else if (status == Status.STATUS_NO_TRANSACTION) {
// EJB was invoked, EJB's Tx is complete.
return checkExceptionNoTx(context, exception);
} else {
// EJB was invoked, EJB's Tx is incomplete.
// See EJB2.0 Section 17.6.1
if (container.isStatefulSession) {
if (container.isSystemUncheckedException(exception)) {
// system/unchecked exception was thrown by EJB
destroyBeanAndRollback(context, null);
return processSystemException(exception);
}
if (isAppExceptionRequiringRollback(exception)) {
rollback();
} else {
transactionManager.suspend();
}
return exception;
} else if (container.isStatelessSession) { // stateless SessionBean
return destroyBeanAndRollback(context, "Stateless SessionBean");
} else if (container.isSingleton) {
return destroyBeanAndRollback(context, "Singleton SessionBean");
} else {
return destroyBeanAndRollback(context, "MessageDrivenBean");
}
}
}
private Throwable checkExceptionNoTx(EJBContextImpl context, Throwable exception) throws EJBException {
LOG.finest(() -> String.format("checkExceptionNoTx(context=%s, exception=%s)", context, exception));
if (exception == null) {
return null;
}
if (exception instanceof BaseContainer.PreInvokeException) {
// A PreInvokeException was thrown, so bean was not invoked
return exception.getCause();
}
// If PreInvokeException was not thrown, EJB was invoked with no Tx
if (container.isSystemUncheckedException(exception)) {
// Table 15, EJB2.0
final Throwable newException = processSystemException(exception);
container.forceDestroyBean(context);
return newException;
}
return exception;
}
// Can be called by the BaseContainer - do not make it private
Throwable checkExceptionClientTx(EJBContextImpl context, Throwable exception) throws SystemException {
LOG.finest(() -> String.format("checkExceptionClientTx(context=%s, exception=%s)", context, exception));
if (exception == null) {
return null;
}
if (exception instanceof BaseContainer.PreInvokeException) {
// A PreInvokeException was thrown, so bean was not invoked
return exception.getCause();
}
// If PreInvokeException wasn't thrown, EJB was invoked with client's Tx
if (container.isSystemUncheckedException(exception)) {
// Table 15, EJB2.0
try {
container.forceDestroyBean(context);
} finally {
transactionManager.setRollbackOnly();
}
final TransactionRolledbackLocalException newException = new TransactionRolledbackLocalException(
"Exception thrown from bean: " + exception);
newException.initCause(exception);
return newException;
}
if (isAppExceptionRequiringRollback(exception)) {
transactionManager.setRollbackOnly();
}
return exception;
}
// this is the counterpart of startNewTx
private Throwable completeNewTx(EJBContextImpl context, Throwable exception, int status) throws Exception {
LOG.finest(
() -> String.format("completeNewTx(context=%s, exception=%s, status=%s)", context, exception, status));
final Throwable newException;
if (exception instanceof BaseContainer.PreInvokeException) {
newException = exception.getCause();
} else {
newException = exception;
}
if (status == Status.STATUS_NO_TRANSACTION) {
// no tx was started, probably an exception was thrown
// before tm.begin() was called
return newException;
}
if (container.isStatefulSession && (context instanceof SessionContextImpl)) {
((SessionContextImpl) context).setTxCompleting(true);
}
// A new tx was started, so we must commit/rollback
if (container.isSystemUncheckedException(newException)) {
// EJB2.0 section 18.3.1, Table 15
// Rollback the Tx we started
destroyBeanAndRollback(context, null);
return processSystemException(newException);
}
try {
if (status == Status.STATUS_MARKED_ROLLBACK) {
// EJB2.0 section 18.3.1, Table 15, and 18.3.6:
// rollback tx, no exception
rollback();
} else {
if (newException != null && isAppExceptionRequiringRollback(newException)) {
rollback();
} else {
// Note: if exception is an application exception
// we do a commit as in EJB2.0 Section 18.3.1,
// Table 15. Commit the Tx we started
transactionManager.commit();
}
}
return newException;
} catch (RollbackException ex) {
LOG.log(Level.FINE, "ejb.transaction_abort_exception", ex);
// EJB2.0 section 18.3.6
final EJBException result = new EJBException("Transaction aborted", ex);
if (newException != null) {
result.addSuppressed(newException);
}
return result;
} catch (Exception ex) {
LOG.log(Level.FINE, "ejb.cmt_exception", ex);
// Commit or rollback failed.
// EJB2.0 section 18.3.6
final EJBException result = new EJBException("Unable to complete container-managed transaction.", ex);
if (newException != null) {
result.addSuppressed(newException);
}
return result;
}
}
/**
* @return null if the type was null, {@link EJBException} otherwise.
*/
private EJBException destroyBeanAndRollback(EJBContextImpl context, String type) throws SystemException {
LOG.finest(() -> String.format("destroyBeanAndRollback(context=%s, type=%s)", context, type));
try {
container.forceDestroyBean(context);
} finally {
rollback();
}
if (type == null) {
return null;
}
LOG.log(Level.FINE, "ejb.incomplete_sessionbean_txn_exception");
return new EJBException(type + " method returned without completing transaction");
}
private void rollback() throws SystemException {
if (transactionManager.isTimedOut()) {
LOG.log(Level.WARNING, "ejb.tx_timeout",
new Object[] {transactionManager.getTransaction(), ejbDescriptor.getName()});
}
transactionManager.rollback();
}
private Throwable processSystemException(Throwable sysEx) {
if (sysEx instanceof EJBException) {
return sysEx;
}
// EJB2.0 section 18.3.4
if (sysEx instanceof NoSuchEntityException) { // for EntityBeans only
return new NoSuchObjectLocalException("NoSuchEntityException thrown by EJB method.").initCause(sysEx);
}
return new EJBException(sysEx.getMessage()).initCause(sysEx);
}
/**
* @return true if this exception is an Application Exception and
* it requires rollback of the transaction in which it was thrown.
*/
private boolean isAppExceptionRequiringRollback(Throwable exception) {
if (exception == null) {
return false;
}
final String exceptionClassName = exception.getClass().getName();
final Map appExceptions = //
ejbDescriptor.getEjbBundleDescriptor().getApplicationExceptions();
Class exceptionClass = exception.getClass();
while (exceptionClass != null) {
final String eClassName = exceptionClass.getName();
if (appExceptions.containsKey(eClassName)) {
final EjbApplicationExceptionInfo exceptionInfo = appExceptions.get(eClassName);
if (exceptionClassName.equals(eClassName) || exceptionInfo.getInherited()) {
// Exact exception is specified as an ApplicationException
// or superclass exception is inherited
return exceptionInfo.getRollback();
}
break;
}
exceptionClass = exceptionClass.getSuperclass();
}
return false;
}
}
