Glassfish example source code file (TransactionFactoryImpl.java)
The Glassfish TransactionFactoryImpl.java source code/*
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//----------------------------------------------------------------------------
//
// Module: TransactionFactoryImpl.java
//
// Description: TransactionFactory object implementation.
//
// Product: com.sun.jts.CosTransactions
//
// Author: Simon Holdsworth
//
// Date: March, 1997
//
// Copyright (c): 1995-1997 IBM Corp.
//
// The source code for this program is not published or otherwise divested
// of its trade secrets, irrespective of what has been deposited with the
// U.S. Copyright Office.
//
// This software contains confidential and proprietary information of
// IBM Corp.
//----------------------------------------------------------------------------
package com.sun.jts.CosTransactions;
import org.omg.CORBA.*;
import org.omg.PortableServer.*;
import org.omg.CosTransactions.*;
import org.omg.CosNaming.*;
import org.omg.CosNaming.NamingContextPackage.*;
import com.sun.jts.trace.*;
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.logging.LogDomains;
import com.sun.jts.utils.LogFormatter;
/**
* The TransactionFactoryImpl interface is our implementation of the standard
* TransactionFactory interface. It provides operations to create the objects
* required to process a transaction.
*
* @version 0.01
*
* @author Simon Holdsworth, IBM Corporation
*
* @see
*/
//----------------------------------------------------------------------------
// CHANGE HISTORY
//
// Version By Change Description
// 0.01 SAJH Initial implementation.
//----------------------------------------------------------------------------
class TransactionFactoryImpl extends TransactionFactoryPOA implements TransactionFactory {
private static POA poa = null;
private TransactionFactory thisRef = null;
static boolean active = true;
/*Logger to log transaction messages*/
static Logger _logger = LogDomains.getLogger(TransactionFactoryImpl.class, LogDomains.TRANSACTION_LOGGER);
/**
* Constructor for the TransactionFactoryImpl. Passes through
* to the parent constructor.
*
* @param
*
* @return
*
* @see
*/
TransactionFactoryImpl() {
// Initialise the TimeoutManager and RecoveryManager.
TimeoutManager.initialise();
RecoveryManager.initialise();
}
/**
* Creates the Coordinator, Control and Terminator objects for a
* new top-level transaction.
*
* @param timeOut The timeout value for the transaction.
*
* @return The Control object for the new transaction.
*
* @exception SystemException An error occurred.
*
* @see
*/
public Control create(int timeOut) throws SystemException {
Control result = null;
ControlImpl cimpl = localCreate(timeOut);
if (cimpl == null) {
return result;
}
if (Configuration.isLocalFactory()) {
result = (Control) cimpl;
} else {
result = cimpl.object();
}
return result;
}
/**
* Creates the Coordinator, Control and Terminator objects for a
* new top-level transaction.
*
* @param timeOut The timeout value for the transaction.
*
* @return The local Control object for the new transaction.
*
* @exception SystemException An error occurred.
*
* @see
*/
public ControlImpl localCreate(int timeOut) throws SystemException {
// If the transaction service is not active, throw an exception.
if (!active) {
NO_PERMISSION exc =
new NO_PERMISSION(0, CompletionStatus.COMPLETED_NO);
throw exc;
}
// Ensure that resync has completed.
RecoveryManager.waitForResync();
// Create a new top-level Coordinator, and initialise it
// with the given time-out value. If the operation fails,
// return a NULL Control
// object, and whatever exception was raised.
TopCoordinator coordinator = null;
TerminatorImpl terminator = null;
ControlImpl result = null;
try {
coordinator = new TopCoordinator(timeOut);
// Create a Terminator object, and initialise it with
// the Coordinator reference and a flag
// to indicate that it does not represent a
// subtransaction. If the operation fails,
// return a NULL Control object, and whatever exception was raised.
terminator = new TerminatorImpl(coordinator,false);
// Create a Control object, and initialise it with the Terminator,
// Coordinator and global OMGtid. If the operation fails,
// return a NULL Control object, and whatever exception was raised.
// result = new ControlImpl(terminator, coordinator,
// new GlobalTID(coordinator.getGlobalTID()),
// new Long(coordinator.getLocalTID()));
result = new ControlImpl(terminator, coordinator,
coordinator.getGlobalTid(),
new Long(coordinator.getLocalTID()));
if(_logger.isLoggable(Level.FINE))
{
_logger.logp(Level.FINE,"TransactionFactoryImpl","localCreate()",
"Control object :" + result +
" corresponding to this transaction has been created"+
"GTID is : "+
((TopCoordinator)coordinator).superInfo.globalTID.toString());
}
} catch (Throwable exc) {
// If an error occurred, free up the objects.
if (coordinator != null) {
coordinator.doFinalize();
}
if (result != null) {
((ControlImpl) result).doFinalize();
}
result = null;
}
return result;
}
/**
* Creates the Coordinator, Control and Terminator objects
* for a transaction based on the context passed in.
*
* @param context The context for the transaction.
*
* @return The Control object for the new transaction.
*
* @exception SystemException An error occurred.
*
* @see
*/
public Control recreate(PropagationContext context)
throws SystemException {
// If the transaction service is not active, throw an exception.
if (!active) {
NO_PERMISSION exc =
new NO_PERMISSION(0,CompletionStatus.COMPLETED_NO);
throw exc;
}
// If the transaction identifier in the context is NULL, just return.
if (context.current == null || context.current.otid.formatID == -1) {
return null;
}
// First check whether there is already a local subordinate
// for the given transaction.
GlobalTID globalTID = new GlobalTID(context.current.otid);
CoordinatorImpl subordinate =
RecoveryManager.getCoordinator(globalTID);
Control result = null;
// If there is no local subordinate, but the Coordinator
// in the context represents a local object,
// then the Coordinator must have been created by the client using
// this TransactionFactory, and the transaction it represents
// must have been rolled back - invoking a method on the Coordinator
// at this point should throw OBJECT_NOT_EXIST. This means that we
// cannot import the transaction, and should throw
// TRANSACTION_ROLLEDBACK.
ProxyChecker checker = Configuration.getProxyChecker();
if (subordinate == null &&
!checker.isProxy(context.current.coord)) {
TRANSACTION_ROLLEDBACK exc =
new TRANSACTION_ROLLEDBACK(0, CompletionStatus.COMPLETED_NO);
throw exc;
}
// If there is no subordinate, then we must import the transaction.
// We first must make sure that resync is not in progress.
if (subordinate == null) {
RecoveryManager.waitForResync();
subordinate = RecoveryManager.getCoordinator(globalTID);
}
// If there is no local subordinate, then for each OMGtid
// in the context, make sure there is a local
// Coordinator set up in this process - required for
// AIX, where we need to ensure every ancestor has a locally created
// transaction. When we have threading on AIX this will not
// be absolutely necessary, but will still be desirable.
try {
if (subordinate == null) {
if (context.parents.length > 0) {
CoordinatorImpl[] newAncestors =
new CoordinatorImpl[context.parents.length];
// If there are indeed ancestors, go through them
// starting at the top-level
// ancestor, which is the last in the sequence.
for (int i = context.parents.length - 1; i >= 0; i--) {
// If a subordinate does not exist, create one.
GlobalTID subGlobalTID =
new GlobalTID(context.parents[i].otid);
subordinate =
RecoveryManager.getCoordinator(subGlobalTID);
if (subordinate == null) {
if (i == context.parents.length - 1) {
// If it is the last ancestor, create a
// temporary top-level subordinate. Use a
// duplicate of the proxy to allow the context
// to be fully destroyed.
subordinate = new TopCoordinator(
context.timeout,
subGlobalTID,
(Coordinator) context.parents[i].
coord._duplicate(),
true);
} else {
// If it is not the last ancestor, create a
// temporary child subordinate. Use a duplicate
// of the proxy to allow the context to be
// fully destroyed.
CoordinatorImpl[] subAncestors =
new CoordinatorImpl[context.parents.length
- i - 1];
System.arraycopy(newAncestors, i + 1,
subAncestors, 0,
context.
parents.length - i - 1);
subordinate =
new SubCoordinator(
subGlobalTID,
(Coordinator)context.parents[i].
coord._duplicate(),
true,
subAncestors);
// Make sure that the parent knows about
// its new child.
newAncestors[i+1].addChild(subordinate);
}
}
// Replace the Coordinator reference in the sequence
// of ancestors with that of the local subordinate,
// first releasing the proxy in the context.
context.parents[i].coord._release();
newAncestors[i] = subordinate;
}
// Now the ancestors have been 'converted' create a
// subordinate of the given subtransaction.
// Use a duplicate of the proxy to allow
// the context to be fully destroyed.
subordinate =
new SubCoordinator(globalTID,
(Coordinator) context.current.
coord._duplicate(),
true,
newAncestors);
//$ This flag was set to false. Surely this subordinate
// is temporary?
// Make sure the parent knows about its new child.
newAncestors[0].addChild(subordinate);
} else {
// If there are no ancestors, but the subordinate
// does not already exist, create a top-level subordinate.
// Use a duplicate of the proxy to allow the context
// to be fully destroyed.
subordinate = new TopCoordinator(
context.timeout,
globalTID,
(Coordinator) context.
current.coord._duplicate(),
true);
}
//$ This flag was set to false.
// Surely this subordinate is temporary?
} else {
// If there already is a subordinate, then ensure
// that it knows it is not a temporary Coordinator.
subordinate.setPermanent();
}
// Create a new Control object for the transaction.
// We do not create a local Terminator
if (Configuration.isLocalFactory()) {
result = (Control) new ControlImpl(null, subordinate, globalTID,
new Long(subordinate.getLocalTID())
);
} else {
result = new ControlImpl(null, subordinate, globalTID,
new Long(subordinate.getLocalTID())
).object();
}
} catch (Throwable exc) {
// If any exception was thrown during that lot, then we
// have failed to create a subordinate. Do something drastic.
_logger.log(Level.SEVERE,"jts.unable_to_create_subordinate_coordinator");
String msg = LogFormatter.getLocalizedMessage(_logger,
"jts.unable_to_create_subordinate_coordinator");
throw new org.omg.CORBA.INTERNAL(msg);
}
return result;
}
/**
* Creates the Coordinator, Control and Terminator objects
* for a transaction based on the Xid object passed in.
*
* @param xid Xid object containing a transaction context.
*
* @return The Control object for the new transaction.
*
* @exception SystemException An error occurred.
*/
public Control recreate(GlobalTID tid, int timeout)
throws SystemException {
// If the transaction service is not active, throw an exception.
if (!active) {
NO_PERMISSION exc =
new NO_PERMISSION(0, CompletionStatus.COMPLETED_NO);
throw exc;
}
// First check whether there is already a local subordinate
// for the given transaction.
CoordinatorImpl subordinate = RecoveryManager.getCoordinator(tid);
Control result = null;
// If there is no subordinate, then we must import the transaction.
// We first must make sure that resync is not in progress.
if (subordinate == null) {
RecoveryManager.waitForResync();
subordinate = RecoveryManager.getCoordinator(tid);
}
// If there is no local subordinate, then for each OMGtid
// in the context, make sure there is a local
// Coordinator set up in this process - required for
// AIX, where we need to ensure every ancestor has a locally created
// transaction. When we have threading on AIX this will not
// be absolutely necessary, but will still be desirable.
try {
if (subordinate == null) {
// If there are no ancestors, but the subordinate
// does not already exist, create a top-level subordinate.
// Use a duplicate of the proxy to allow the context
// to be fully destroyed.
subordinate = new TopCoordinator(
timeout, tid, new TxInflowCoordinator(),
true);
} else {
Status status = subordinate.get_status();
if ((status != Status.StatusMarkedRollback) &&
(status != Status.StatusActive)) {
throw new INVALID_TRANSACTION("tx completion in-progress");
}
// If there already is a subordinate, then ensure
// that it knows it is not a temporary Coordinator.
subordinate.setPermanent();
}
// Create a new Control object for the transaction.
// We do not create a local Terminator.
if (Configuration.isLocalFactory()) {
result = (Control) new ControlImpl(null, subordinate, tid,
new Long(subordinate.getLocalTID())
);
} else {
result = new ControlImpl(null, subordinate, tid,
new Long(subordinate.getLocalTID())
).object();
}
} catch (Throwable exc) {
// If any exception was thrown during that lot, then we
// have failed to create a subordinate.
_logger.log(Level.WARNING,"jts.unable_to_create_subordinate_coordinator");
String msg = LogFormatter.getLocalizedMessage(_logger,
"jts.unable_to_create_subordinate_coordinator");
INTERNAL intExc = new INTERNAL(msg);
//INTERNAL intExc = new INTERNAL("tx recreate failed");
intExc.initCause(exc);
throw intExc;
}
return result;
}
/**
* Prevents any further transactional activity in the process.
*
* @param
*
* @return
*
* @see
*/
static void deactivate() {
active = false;
// Shut down the TimeoutManager and RecoveryManager.
TimeoutManager.shutdown(false);
RecoveryManager.shutdown(false);
DelegatedRecoveryManager.shutdown(false);
}
/**Returns the CORBA Object which represents this object.
*
* @param
*
* @return The CORBA object.
*
* @see
*/
synchronized TransactionFactory object() {
if (thisRef == null) {
if (poa == null) {
poa = Configuration.getPOA("transient"/*#Frozen*/);
}
try {
poa.activate_object(this);
thisRef = TransactionFactoryHelper.
narrow(poa.servant_to_reference(this));
//thisRef = (TransactionFactory)this;
/*
* ADDED(Ram J) Whenever a TransactionFactory corba object is
* created, put it in the cosnaming service.
*/
NamingContext namingContext = null;
try {
namingContext = NamingContextHelper.narrow(
Configuration.getORB().resolve_initial_references("NameService"/*#Frozen*/));
} catch (Exception exc) {
_logger.log(Level.WARNING,"jts.orb_not_running");
// Return - otherwise it'll just be an NPE reported in the next block
return thisRef;
}
try {
NameComponent nc = new NameComponent(TransactionFactoryHelper.id(), "");
NameComponent path[] = { nc };
namingContext.rebind(path, thisRef);
} catch (Exception exc) {
_logger.log(Level.WARNING,"jts.cannot_register_with_orb",
"TransactionFactory");
}
} catch (Exception exc) {
_logger.log(Level.SEVERE,"jts.create_transactionfactory_object_error");
String msg = LogFormatter.getLocalizedMessage(_logger,
"jts.create_transactionfactory_object_error");
throw new org.omg.CORBA.INTERNAL(msg);
}
}
return thisRef;
}
/**Returns the TransactionFactoryImpl which serves the given object.
*
* @param The CORBA Object.
*
* @return The TransactionFactoryImpl object which serves it.
*
* @see
*/
synchronized static final TransactionFactoryImpl servant(TransactionFactory factory) {
TransactionFactoryImpl result = null;
// we will not be able to obtain the
// servant from our local POA for a proxy factory object.
// so return null
if (factory != null && Configuration.getProxyChecker().isProxy(factory)) {
return result;
}
if (factory instanceof TransactionFactoryImpl ) {
result = (TransactionFactoryImpl) factory;
} else if (poa != null) {
try {
result = (TransactionFactoryImpl) poa.reference_to_servant(factory);
if( result.thisRef == null )
result.thisRef = factory;
} catch( Exception exc ) {
_logger.log(Level.WARNING,"jts.cannot_locate_servant",
"TransactionFactory");
}
}
return result;
}
/*
* These methods are there to satisy the compiler. At some point
* when we move towards a tie based model, the org.omg.Corba.Object
* interface method implementation below shall be discarded.
*/
public org.omg.CORBA.Object _duplicate() {
throw new org.omg.CORBA.NO_IMPLEMENT("This is a locally constrained object.");
}
public void _release() {
throw new org.omg.CORBA.NO_IMPLEMENT("This is a locally constrained object.");
}
public boolean _is_a(String repository_id) {
throw new org.omg.CORBA.NO_IMPLEMENT("This is a locally constrained object.");
}
public boolean _is_equivalent(org.omg.CORBA.Object that) {
throw new org.omg.CORBA.NO_IMPLEMENT("This is a locally constrained object.");
}
public boolean _non_existent() {
throw new org.omg.CORBA.NO_IMPLEMENT("This is a locally constrained object.");
}
public int _hash(int maximum) {
throw new org.omg.CORBA.NO_IMPLEMENT("This is a locally constrained object.");
}
public Request _request(String operation) {
throw new org.omg.CORBA.NO_IMPLEMENT("This is a locally constrained object.");
}
public Request _create_request(Context ctx,
String operation,
NVList arg_list,
NamedValue result) {
throw new org.omg.CORBA.NO_IMPLEMENT("This is a locally constrained object.");
}
public Request _create_request(Context ctx,
String operation,
NVList arg_list,
NamedValue result,
ExceptionList exceptions,
ContextList contexts) {
throw new org.omg.CORBA.NO_IMPLEMENT("This is a locally constrained object.");
}
public org.omg.CORBA.Object _get_interface_def() {
throw new org.omg.CORBA.NO_IMPLEMENT("This is a locally constrained object.");
}
public org.omg.CORBA.Policy _get_policy(int policy_type) {
throw new org.omg.CORBA.NO_IMPLEMENT("This is a locally constrained object.");
}
public org.omg.CORBA.DomainManager[] _get_domain_managers() {
throw new org.omg.CORBA.NO_IMPLEMENT("This is a locally constrained object.");
}
public org.omg.CORBA.Object _set_policy_override(
org.omg.CORBA.Policy[] policies,
org.omg.CORBA.SetOverrideType set_add) {
throw new org.omg.CORBA.NO_IMPLEMENT("This is a locally constrained object.");
}
}
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