com.sun.gjc.spi

Class XAResourceImpl

java.lang.Object

com.sun.gjc.spi.XAResourceImpl

All Implemented Interfaces:

XAResource

public class XAResourceImpl
extends Object
implements XAResource

XAResource wrapper for Generic JDBC Connector.

Version:

1.0, 02/08/23

Author:

Evani Sai Surya Kiran

Field Summary

Fields inherited from interface javax.transaction.xa.XAResource

TMENDRSCAN, TMFAIL, TMJOIN, TMNOFLAGS, TMONEPHASE, TMRESUME, TMSTARTRSCAN, TMSUCCESS, TMSUSPEND, XA_OK, XA_RDONLY

Constructor Summary

Constructors

Constructor and Description
XAResourceImpl(XAResource xar, ManagedConnectionImpl mc) Constructor for XAResourceImpl

Method Summary

Modifier and Type	Method and Description
void	commit(Xid xid, boolean onePhase) Commit the global transaction specified by xid.
void	end(Xid xid, int flags) Ends the work performed on behalf of a transaction branch.
void	forget(Xid xid) Tell the resource manager to forget about a heuristically completed transaction branch.
int	getTransactionTimeout() Obtain the current transaction timeout value set for this XAResource instance.
boolean	isSameRM(XAResource xares) This method is called to determine if the resource manager instance represented by the target object is the same as the resouce manager instance represented by the parameter xares.
int	prepare(Xid xid) Ask the resource manager to prepare for a transaction commit of the transaction specified in xid.
Xid[]	recover(int flag) Obtain a list of prepared transaction branches from a resource manager.
void	rollback(Xid xid) Inform the resource manager to roll back work done on behalf of a transaction branch
boolean	setTransactionTimeout(int seconds) Set the current transaction timeout value for this XAResource instance.
void	start(Xid xid, int flags) Start work on behalf of a transaction branch specified in xid.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

XAResourceImpl

public XAResourceImpl(XAResource xar,
                      ManagedConnectionImpl mc)

Constructor for XAResourceImpl

Parameters:

xar - XAResource

mc - ManagedConnection

Method Detail

commit

public void commit(Xid xid,
                   boolean onePhase)
            throws XAException

Commit the global transaction specified by xid.

Specified by:

commit in interface XAResource

Parameters:

xid - A global transaction identifier

onePhase - If true, the resource manager should use a one-phase commit protocol to commit the work done on behalf of xid.

Throws:

XAException

end

public void end(Xid xid,
                int flags)
         throws XAException

Ends the work performed on behalf of a transaction branch.

Specified by:

end in interface XAResource

Parameters:

xid - A global transaction identifier that is the same as what was used previously in the start method.

flags - One of TMSUCCESS, TMFAIL, or TMSUSPEND

Throws:

XAException

forget

public void forget(Xid xid)
            throws XAException

Tell the resource manager to forget about a heuristically completed transaction branch.

Specified by:

forget in interface XAResource

Parameters:

xid - A global transaction identifier

Throws:

XAException

getTransactionTimeout

public int getTransactionTimeout()
                          throws XAException

Obtain the current transaction timeout value set for this XAResource instance.

Specified by:

getTransactionTimeout in interface XAResource

Returns:

the transaction timeout value in seconds

Throws:

XAException

isSameRM

public boolean isSameRM(XAResource xares)
                 throws XAException

This method is called to determine if the resource manager instance represented by the target object is the same as the resouce manager instance represented by the parameter xares.

Specified by:

isSameRM in interface XAResource

Parameters:

xares - An XAResource object whose resource manager instance is to be compared with the resource

Returns:

true if it's the same RM instance; otherwise false.

Throws:

XAException

prepare

public int prepare(Xid xid)
            throws XAException

Ask the resource manager to prepare for a transaction commit of the transaction specified in xid.

Specified by:

prepare in interface XAResource

Parameters:

xid - A global transaction identifier

Returns:

A value indicating the resource manager's vote on the outcome of the transaction. The possible values are: XA_RDONLY or XA_OK. If the resource manager wants to roll back the transaction, it should do so by raising an appropriate XAException in the prepare method.

Throws:

XAException

recover

public Xid[] recover(int flag)
              throws XAException

Obtain a list of prepared transaction branches from a resource manager.

Specified by:

recover in interface XAResource

Parameters:

flag - One of TMSTARTRSCAN, TMENDRSCAN, TMNOFLAGS. TMNOFLAGS must be used when no other flags are set in flags.

Returns:

The resource manager returns zero or more XIDs for the transaction branches that are currently in a prepared or heuristically completed state. If an error occurs during the operation, the resource manager should throw the appropriate XAException.

Throws:

XAException

rollback

public void rollback(Xid xid)
              throws XAException

Inform the resource manager to roll back work done on behalf of a transaction branch

Specified by:

rollback in interface XAResource

Parameters:

xid - A global transaction identifier

Throws:

XAException

setTransactionTimeout

public boolean setTransactionTimeout(int seconds)
                              throws XAException

Set the current transaction timeout value for this XAResource instance.

Specified by:

setTransactionTimeout in interface XAResource

Parameters:

seconds - the transaction timeout value in seconds.

Returns:

true if transaction timeout value is set successfully; otherwise false.

Throws:

XAException

start

public void start(Xid xid,
                  int flags)
           throws XAException

Start work on behalf of a transaction branch specified in xid.

Specified by:

start in interface XAResource

Parameters:

xid - A global transaction identifier to be associated with the resource

flags - One of XAResource.TMNOFLAGS, XAResource.TMJOIN, or XAResource.TMRESUME

Throws:

XAException