com.sun.enterprise.resource.pool

Class PoolTxHelper

java.lang.Object

com.sun.enterprise.resource.pool.PoolTxHelper

public class PoolTxHelper
extends Object

Transaction helper for the pool to check various states of a resource that is taking part in the transaction.

Author:

Jagadish Ramu

Field Summary

Fields

Modifier and Type	Field and Description
protected static Logger	_logger

Constructor Summary

Constructors

Constructor and Description
PoolTxHelper(PoolInfo poolInfo)

Method Summary

Modifier and Type	Method and Description
boolean	isLocalResourceEligibleForReuse(ResourceHandle h) Check whether the local resource can be put back to pool If true, unenlist the resource
boolean	isLocalResourceInTransaction(ResourceHandle h) Check whether the local resource in question is the one participating in transaction.
boolean	isLocalTransactionInProgress() Check whether a local transaction is in progress.
boolean	isNonXAResource(ResourceHandle resource) Check whether the resource is non-xa
boolean	isNonXAResourceAndFree(JavaEETransaction tran, ResourceHandle resource) Check whether the resource is non-xa, free and is enlisted in transaction.
void	resourceEnlisted(Transaction tran, ResourceHandle resource) this method is called when a resource is enlisted in transation tran
List<ResourceHandle>	transactionCompleted(Transaction tran, int status, PoolInfo poolInfo) this method is called when transaction tran is completed

Methods inherited from class java.lang.Object

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

Field Detail

_logger

protected static final Logger _logger

Constructor Detail

PoolTxHelper

public PoolTxHelper(PoolInfo poolInfo)

Method Detail

isLocalResourceEligibleForReuse

public boolean isLocalResourceEligibleForReuse(ResourceHandle h)

Check whether the local resource can be put back to pool If true, unenlist the resource

Parameters:

h - ResourceHandle to be verified

Returns:

boolean

isLocalTransactionInProgress

public boolean isLocalTransactionInProgress()

Check whether a local transaction is in progress.

Returns:

true if a local transaction is in progress.

isLocalResourceInTransaction

public boolean isLocalResourceInTransaction(ResourceHandle h)

Check whether the local resource in question is the one participating in transaction.

Parameters:

h - ResourceHandle

Returns:

true if the resource is participating in the transaction

isNonXAResource

public boolean isNonXAResource(ResourceHandle resource)

Check whether the resource is non-xa

Parameters:

resource - Resource to be verified

Returns:

boolean indicating whether the resource is non-xa

isNonXAResourceAndFree

public boolean isNonXAResourceAndFree(JavaEETransaction tran,
                                      ResourceHandle resource)

Check whether the resource is non-xa, free and is enlisted in transaction.

Parameters:

tran - Transaction

resource - Resource to be verified

Returns:

boolean indicating whether the resource is free, non-xa and is enlisted in transaction

resourceEnlisted

public void resourceEnlisted(Transaction tran,
                             ResourceHandle resource)

this method is called when a resource is enlisted in transation tran

Parameters:

tran - Transaction to which the resource need to be enlisted

resource - Resource to be enlisted in the transaction

transactionCompleted

public List<ResourceHandle> transactionCompleted(Transaction tran,
                                                 int status,
                                                 PoolInfo poolInfo)

this method is called when transaction tran is completed

Parameters:

tran - transaction which has completed

status - transaction status

poolInfo - Pool name

Returns:

delisted resources