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package com.sun.enterprise.transaction;
import javax.transaction.*;
import javax.resource.spi.XATerminator;
import com.sun.enterprise.*;
import javax.transaction.xa.Xid;
import com.sun.enterprise.distributedtx.J2EETransactionManagerOpt;
import com.sun.enterprise.distributedtx.J2EETransaction;
import com.sun.enterprise.distributedtx.UserTransactionImpl;
/**
* This class is wrapper for the actual transaction manager implementation.
* JNDI lookup name "java:appserver/TransactionManager"
* see the com/sun/enterprise/naming/java/javaURLContext.java
**/
public class TransactionManagerHelper implements TransactionManager, TransactionImport {
public void begin() throws NotSupportedException, SystemException {
getTransactionManagerImpl().begin();
}
public void commit() throws RollbackException,
HeuristicMixedException, HeuristicRollbackException, SecurityException,
IllegalStateException, SystemException {
getTransactionManagerImpl().commit();
}
public int getStatus() throws SystemException {
return getTransactionManagerImpl().getStatus();
}
public Transaction getTransaction() throws SystemException {
return getTransactionManagerImpl().getTransaction();
}
public void resume(Transaction tobj)
throws InvalidTransactionException, IllegalStateException,
SystemException {
getTransactionManagerImpl().resume(tobj);
}
public void rollback() throws IllegalStateException, SecurityException,
SystemException {
getTransactionManagerImpl().rollback();
}
public void setRollbackOnly() throws IllegalStateException, SystemException {
getTransactionManagerImpl().setRollbackOnly();
}
public void setTransactionTimeout(int seconds) throws SystemException {
getTransactionManagerImpl().setTransactionTimeout(seconds);
}
public Transaction suspend() throws SystemException {
return getTransactionManagerImpl().suspend();
}
public static TransactionManager getTransactionManager() {
return tmHelper;
}
public void recreate(Xid xid, long timeout) {
final J2EETransactionManager tm = getTransactionManagerImpl();
try {
tm.recreate(xid, timeout);
} catch (javax.resource.spi.work.WorkException ex) {
throw new IllegalStateException(ex);
}
servletPreInvokeTx();
}
public void release(Xid xid) {
IllegalStateException rethrow = null;
final J2EETransactionManager tm = getTransactionManagerImpl();
servletPostInvokeTx(false);
try {
tm.release(xid);
} catch (javax.resource.spi.work.WorkException ex) {
throw new IllegalStateException(ex);
} finally {
if (tm instanceof J2EETransactionManagerOpt) {
((J2EETransactionManagerOpt) tm).clearThreadTx();
}
if (rethrow != null) {
throw rethrow;
}
}
}
public XATerminator getXATerminator() {
return getTransactionManagerImpl().getXATerminator();
}
/**
* PreInvoke Transaction configuration for Servlet Container.
* BaseContainer.preInvokeTx() handles all this for CMT EJB.
*
* Compensate that J2EEInstanceListener.handleBeforeEvent(
* BEFORE_SERVICE_EVENT)
* gets called before WSIT WSTX Service pipe associates a JTA txn with
* incoming thread.
*
* Precondition: assumes JTA transaction already associated with current
* thread.
*/
public void servletPreInvokeTx() {
final ComponentInvocation inv =
Switch.getSwitch().getInvocationManager().getCurrentInvocation();
if (inv != null &&
inv.getInvocationType() == ComponentInvocation.SERVLET_INVOCATION){
try {
// Required side effect: note that
// enlistComponentResources calls
// ComponentInvocation.setTransaction(currentJTATxn).
// If this is not correctly set, managed XAResource connections
// are not auto enlisted when they are created.
getTransactionManagerImpl().enlistComponentResources();
} catch (java.rmi.RemoteException re) {
throw new IllegalStateException(re);
}
}
}
/**
* PostInvoke Transaction configuration for Servlet Container.
* BaseContainer.preInvokeTx() handles all this for CMT EJB.
*
* Precondition: assumed called prior to current transcation being
* suspended or released.
*
* @param suspend indicate whether the delisting is due to suspension or
* transaction completion(commmit/rollback)
*/
public void servletPostInvokeTx(boolean suspend) {
final ComponentInvocation inv =
Switch.getSwitch().getInvocationManager().getCurrentInvocation();
if (inv != null && inv.getInvocationType() ==
ComponentInvocation.SERVLET_INVOCATION) {
try {
getTransactionManagerImpl().delistComponentResources(suspend);
} catch (java.rmi.RemoteException re) {
throw new IllegalStateException(re);
} finally {
inv.setTransaction(null);
}
}
}
/**
* Return duration before current transaction would timeout.
*
* @return Returns the duration in seconds before current transaction would
* timeout.
* Returns zero if transaction has no timeout set and returns
* negative value if transaction already timed out.
*
* @exception IllegalStateException Thrown if the current thread is
* not associated with a transaction.
*
* @exception SystemException Thrown if the transaction manager
* encounters an unexpected error condition.
*/
public int getTransactionRemainingTimeout() throws SystemException {
int timeout = 0;
Transaction txn = getTransaction();
if (txn == null) {
throw new IllegalStateException("no current transaction");
} else if (txn instanceof J2EETransaction) {
timeout = ((J2EETransaction)txn).getRemainingTimeout();
}
return timeout;
}
private J2EETransactionManager getTransactionManagerImpl() {
J2EETransactionManager tm = Switch.getSwitch().getTransactionManager();
if (tm != null)
return tm;
new UserTransactionImpl(); // Hack to make clients work using this class
tm = Switch.getSwitch().getTransactionManager();
return tm;
}
private static TransactionManagerHelper tmHelper = new TransactionManagerHelper();
}