Package com.ibm.fhir.persistence.jdbc.connection

Class FHIRUserTransactionAdapter

java.lang.Object

com.ibm.fhir.persistence.jdbc.connection.FHIRUserTransactionAdapter

All Implemented Interfaces:

FHIRPersistenceTransaction

public class FHIRUserTransactionAdapter
extends Object
implements FHIRPersistenceTransaction

Adapter to simplify transaction handling. This object is returned by FHIRPersistenceJDBCImpl and can be used instead of the old FHIRTransactionHelper

Constructor Summary

Constructors

Constructor	Description
FHIRUserTransactionAdapter(UserTransaction tx, TransactionSynchronizationRegistry syncRegistry, FHIRPersistenceJDBCCache cache, String transactionDataKey)	Public constructor

Method Summary

Modifier and Type	Method	Description
void	begin()	If a transaction has not yet been started on this thread, then start one.
void	end()	If we previously started a transaction on this thread using this helper instance, then commit it now.
(package private) <T> T	func(Supplier<T> s)	Call the supplier function within a begin/end
protected int	getStatus()	Get the Status of the global transaction
boolean	hasBegun()	Determine if the transaction status is currently active
protected boolean	isActive(int status)	Is there a transaction currently on this thread?
protected boolean	isMarkedForRollback(int status)	Has this transaction been marked for rollback?
protected boolean	isNoTransaction(int status)	Are we in the NO TRANSACTION state?
boolean	isTransactional()	Does the underlying implementation actually support transactions? A persistence layer must always return a FHIRPersistenceTransaction even if it doesn't support transactions.
void	setRollbackOnly()	Modify the transaction associated with the current thread such that the only possible outcome of the transaction is to roll back the transaction.

Methods inherited from class java.lang.Object

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

Constructor Detail

FHIRUserTransactionAdapter

public FHIRUserTransactionAdapter(UserTransaction tx,
                                  TransactionSynchronizationRegistry syncRegistry,
                                  FHIRPersistenceJDBCCache cache,
                                  String transactionDataKey)

Public constructor

Parameters:

tx -

Method Detail

begin

public void begin()
           throws FHIRPersistenceException

If a transaction has not yet been started on this thread, then start one.

Specified by:

begin in interface FHIRPersistenceTransaction

Throws:

FHIRPersistenceException

end

public void end()
         throws FHIRPersistenceException

If we previously started a transaction on this thread using this helper instance, then commit it now.

Specified by:

end in interface FHIRPersistenceTransaction

Throws:

FHIRPersistenceException

setRollbackOnly

public void setRollbackOnly()
                     throws FHIRPersistenceException

Description copied from interface: FHIRPersistenceTransaction

Modify the transaction associated with the current thread such that the only possible outcome of the transaction is to roll back the transaction.

Specified by:

setRollbackOnly in interface FHIRPersistenceTransaction

Throws:

FHIRPersistenceException

isTransactional

public boolean isTransactional()

Description copied from interface: FHIRPersistenceTransaction

Does the underlying implementation actually support transactions? A persistence layer must always return a FHIRPersistenceTransaction even if it doesn't support transactions. This reduces boilerplate code by avoiding the need to check for null every time.

Specified by:

isTransactional in interface FHIRPersistenceTransaction

Returns:

isActive

protected boolean isActive(int status)

Is there a transaction currently on this thread?

Returns:

true if a global transaction is active on the current thread

isMarkedForRollback

protected boolean isMarkedForRollback(int status)

Has this transaction been marked for rollback?

Returns:

isNoTransaction

protected boolean isNoTransaction(int status)

Are we in the NO TRANSACTION state?

Parameters:

status -

Returns:

getStatus

protected int getStatus()
                 throws FHIRPersistenceDataAccessException

Get the Status of the global transaction

Returns:

Throws:

FHIRPersistenceDataAccessException

func

<T> T func(Supplier<T> s)
    throws FHIRPersistenceException

Call the supplier function within a begin/end

Type Parameters:

T -

Parameters:

s -

Returns:

Throws:

FHIRPersistenceException

hasBegun

public boolean hasBegun()
                 throws FHIRPersistenceException

Description copied from interface: FHIRPersistenceTransaction

Determine if the transaction status is currently active

Specified by:

hasBegun in interface FHIRPersistenceTransaction

Returns:

true if transaction begin has been called

Throws:

FHIRPersistenceException