org.springframework.jca.cci.connection
Class CciLocalTransactionManager

java.lang.Object
  extended by org.springframework.transaction.support.AbstractPlatformTransactionManager
      extended by org.springframework.jca.cci.connection.CciLocalTransactionManager
All Implemented Interfaces:
java.io.Serializable, InitializingBean, PlatformTransactionManager, ResourceTransactionManager

public class CciLocalTransactionManager
extends AbstractPlatformTransactionManager
implements ResourceTransactionManager, InitializingBean

PlatformTransactionManager implementation that manages local transactions for a single CCI ConnectionFactory. Binds a CCI Connection from the specified ConnectionFactory to the thread, potentially allowing for one thread-bound Connection per ConnectionFactory.

Application code is required to retrieve the CCI Connection via ConnectionFactoryUtils.getConnection(ConnectionFactory) instead of a standard J2EE-style ConnectionFactory.getConnection() call. Spring classes such as CciTemplate use this strategy implicitly. If not used in combination with this transaction manager, the ConnectionFactoryUtils lookup strategy behaves exactly like the native DataSource lookup; it can thus be used in a portable fashion.

Alternatively, you can allow application code to work with the standard J2EE lookup pattern ConnectionFactory.getConnection(), for example for legacy code that is not aware of Spring at all. In that case, define a TransactionAwareConnectionFactoryProxy for your target ConnectionFactory, which will automatically participate in Spring-managed transactions.

Since:
1.2
Author:
Thierry Templier, Juergen Hoeller
See Also:
ConnectionFactoryUtils.getConnection(javax.resource.cci.ConnectionFactory), ConnectionFactoryUtils.releaseConnection(javax.resource.cci.Connection, javax.resource.cci.ConnectionFactory), TransactionAwareConnectionFactoryProxy, CciTemplate, Serialized Form

Nested Class Summary
 
Nested classes/interfaces inherited from class org.springframework.transaction.support.AbstractPlatformTransactionManager
AbstractPlatformTransactionManager.SuspendedResourcesHolder
 
Field Summary
 
Fields inherited from class org.springframework.transaction.support.AbstractPlatformTransactionManager
logger, SYNCHRONIZATION_ALWAYS, SYNCHRONIZATION_NEVER, SYNCHRONIZATION_ON_ACTUAL_TRANSACTION
 
Constructor Summary
CciLocalTransactionManager()
          Create a new CciLocalTransactionManager instance.
CciLocalTransactionManager(javax.resource.cci.ConnectionFactory connectionFactory)
          Create a new CciLocalTransactionManager instance.
 
Method Summary
 void afterPropertiesSet()
          Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
protected  void doBegin(java.lang.Object transaction, TransactionDefinition definition)
          Begin a new transaction with semantics according to the given transaction definition.
protected  void doCleanupAfterCompletion(java.lang.Object transaction)
          Cleanup resources after transaction completion.
protected  void doCommit(DefaultTransactionStatus status)
          Perform an actual commit of the given transaction.
protected  java.lang.Object doGetTransaction()
          Return a transaction object for the current transaction state.
protected  void doResume(java.lang.Object transaction, java.lang.Object suspendedResources)
          Resume the resources of the current transaction.
protected  void doRollback(DefaultTransactionStatus status)
          Perform an actual rollback of the given transaction.
protected  void doSetRollbackOnly(DefaultTransactionStatus status)
          Set the given transaction rollback-only.
protected  java.lang.Object doSuspend(java.lang.Object transaction)
          Suspend the resources of the current transaction.
 javax.resource.cci.ConnectionFactory getConnectionFactory()
          Return the CCI ConnectionFactory that this instance manages local transactions for.
 java.lang.Object getResourceFactory()
          Return the resource factory that this transaction manager operates on, e.g.
protected  boolean isExistingTransaction(java.lang.Object transaction)
          Check if the given transaction object indicates an existing transaction (that is, a transaction which has already started).
protected  boolean isRollbackOnly(java.lang.Object transaction)
           
 void setConnectionFactory(javax.resource.cci.ConnectionFactory cf)
          Set the CCI ConnectionFactory that this instance should manage local transactions for.
 
Methods inherited from class org.springframework.transaction.support.AbstractPlatformTransactionManager
commit, determineTimeout, getDefaultTimeout, getTransaction, getTransactionSynchronization, invokeAfterCompletion, isFailEarlyOnGlobalRollbackOnly, isGlobalRollbackOnParticipationFailure, isNestedTransactionAllowed, isRollbackOnCommitFailure, isValidateExistingTransaction, newTransactionStatus, prepareForCommit, registerAfterCompletionWithExistingTransaction, resume, rollback, setDefaultTimeout, setFailEarlyOnGlobalRollbackOnly, setGlobalRollbackOnParticipationFailure, setNestedTransactionAllowed, setRollbackOnCommitFailure, setTransactionSynchronization, setTransactionSynchronizationName, setValidateExistingTransaction, shouldCommitOnGlobalRollbackOnly, suspend, triggerBeforeCommit, triggerBeforeCompletion, useSavepointForNestedTransaction
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.springframework.transaction.PlatformTransactionManager
commit, getTransaction, rollback
 

Constructor Detail

CciLocalTransactionManager

public CciLocalTransactionManager()
Create a new CciLocalTransactionManager instance. A ConnectionFactory has to be set to be able to use it.

See Also:
setConnectionFactory(javax.resource.cci.ConnectionFactory)

CciLocalTransactionManager

public CciLocalTransactionManager(javax.resource.cci.ConnectionFactory connectionFactory)
Create a new CciLocalTransactionManager instance.

Parameters:
connectionFactory - CCI ConnectionFactory to manage local transactions for
Method Detail

setConnectionFactory

public void setConnectionFactory(javax.resource.cci.ConnectionFactory cf)
Set the CCI ConnectionFactory that this instance should manage local transactions for.


getConnectionFactory

public javax.resource.cci.ConnectionFactory getConnectionFactory()
Return the CCI ConnectionFactory that this instance manages local transactions for.


afterPropertiesSet

public void afterPropertiesSet()
Description copied from interface: InitializingBean
Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

Specified by:
afterPropertiesSet in interface InitializingBean

getResourceFactory

public java.lang.Object getResourceFactory()
Description copied from interface: ResourceTransactionManager
Return the resource factory that this transaction manager operates on, e.g. a JDBC DataSource or a JMS ConnectionFactory.

This target resource factory is usually used as resource key for TransactionSynchronizationManager's resource bindings per thread.

Specified by:
getResourceFactory in interface ResourceTransactionManager
Returns:
the target resource factory (never null)
See Also:
TransactionSynchronizationManager.bindResource(java.lang.Object, java.lang.Object), TransactionSynchronizationManager.getResource(java.lang.Object)

doGetTransaction

protected java.lang.Object doGetTransaction()
Description copied from class: AbstractPlatformTransactionManager
Return a transaction object for the current transaction state.

The returned object will usually be specific to the concrete transaction manager implementation, carrying corresponding transaction state in a modifiable fashion. This object will be passed into the other template methods (e.g. doBegin and doCommit), either directly or as part of a DefaultTransactionStatus instance.

The returned object should contain information about any existing transaction, that is, a transaction that has already started before the current getTransaction call on the transaction manager. Consequently, a doGetTransaction implementation will usually look for an existing transaction and store corresponding state in the returned transaction object.

Specified by:
doGetTransaction in class AbstractPlatformTransactionManager
Returns:
the current transaction object
See Also:
AbstractPlatformTransactionManager.doBegin(java.lang.Object, org.springframework.transaction.TransactionDefinition), AbstractPlatformTransactionManager.doCommit(org.springframework.transaction.support.DefaultTransactionStatus), AbstractPlatformTransactionManager.doRollback(org.springframework.transaction.support.DefaultTransactionStatus), DefaultTransactionStatus.getTransaction()

isExistingTransaction

protected boolean isExistingTransaction(java.lang.Object transaction)
Description copied from class: AbstractPlatformTransactionManager
Check if the given transaction object indicates an existing transaction (that is, a transaction which has already started).

The result will be evaluated according to the specified propagation behavior for the new transaction. An existing transaction might get suspended (in case of PROPAGATION_REQUIRES_NEW), or the new transaction might participate in the existing one (in case of PROPAGATION_REQUIRED).

The default implementation returns false, assuming that participating in existing transactions is generally not supported. Subclasses are of course encouraged to provide such support.

Overrides:
isExistingTransaction in class AbstractPlatformTransactionManager
Parameters:
transaction - transaction object returned by doGetTransaction
Returns:
if there is an existing transaction
See Also:
AbstractPlatformTransactionManager.doGetTransaction()

doBegin

protected void doBegin(java.lang.Object transaction,
                       TransactionDefinition definition)
Description copied from class: AbstractPlatformTransactionManager
Begin a new transaction with semantics according to the given transaction definition. Does not have to care about applying the propagation behavior, as this has already been handled by this abstract manager.

This method gets called when the transaction manager has decided to actually start a new transaction. Either there wasn't any transaction before, or the previous transaction has been suspended.

A special scenario is a nested transaction without savepoint: If useSavepointForNestedTransaction() returns "false", this method will be called to start a nested transaction when necessary. In such a context, there will be an active transaction: The implementation of this method has to detect this and start an appropriate nested transaction.

Specified by:
doBegin in class AbstractPlatformTransactionManager
Parameters:
transaction - transaction object returned by doGetTransaction
definition - TransactionDefinition instance, describing propagation behavior, isolation level, read-only flag, timeout, and transaction name

doSuspend

protected java.lang.Object doSuspend(java.lang.Object transaction)
Description copied from class: AbstractPlatformTransactionManager
Suspend the resources of the current transaction. Transaction synchronization will already have been suspended.

The default implementation throws a TransactionSuspensionNotSupportedException, assuming that transaction suspension is generally not supported.

Overrides:
doSuspend in class AbstractPlatformTransactionManager
Parameters:
transaction - transaction object returned by doGetTransaction
Returns:
an object that holds suspended resources (will be kept unexamined for passing it into doResume)
See Also:
AbstractPlatformTransactionManager.doResume(java.lang.Object, java.lang.Object)

doResume

protected void doResume(java.lang.Object transaction,
                        java.lang.Object suspendedResources)
Description copied from class: AbstractPlatformTransactionManager
Resume the resources of the current transaction. Transaction synchronization will be resumed afterwards.

The default implementation throws a TransactionSuspensionNotSupportedException, assuming that transaction suspension is generally not supported.

Overrides:
doResume in class AbstractPlatformTransactionManager
Parameters:
transaction - transaction object returned by doGetTransaction
suspendedResources - the object that holds suspended resources, as returned by doSuspend
See Also:
AbstractPlatformTransactionManager.doSuspend(java.lang.Object)

isRollbackOnly

protected boolean isRollbackOnly(java.lang.Object transaction)
                          throws TransactionException
Throws:
TransactionException

doCommit

protected void doCommit(DefaultTransactionStatus status)
Description copied from class: AbstractPlatformTransactionManager
Perform an actual commit of the given transaction.

An implementation does not need to check the "new transaction" flag or the rollback-only flag; this will already have been handled before. Usually, a straight commit will be performed on the transaction object contained in the passed-in status.

Specified by:
doCommit in class AbstractPlatformTransactionManager
Parameters:
status - the status representation of the transaction
See Also:
DefaultTransactionStatus.getTransaction()

doRollback

protected void doRollback(DefaultTransactionStatus status)
Description copied from class: AbstractPlatformTransactionManager
Perform an actual rollback of the given transaction.

An implementation does not need to check the "new transaction" flag; this will already have been handled before. Usually, a straight rollback will be performed on the transaction object contained in the passed-in status.

Specified by:
doRollback in class AbstractPlatformTransactionManager
Parameters:
status - the status representation of the transaction
See Also:
DefaultTransactionStatus.getTransaction()

doSetRollbackOnly

protected void doSetRollbackOnly(DefaultTransactionStatus status)
Description copied from class: AbstractPlatformTransactionManager
Set the given transaction rollback-only. Only called on rollback if the current transaction participates in an existing one.

The default implementation throws an IllegalTransactionStateException, assuming that participating in existing transactions is generally not supported. Subclasses are of course encouraged to provide such support.

Overrides:
doSetRollbackOnly in class AbstractPlatformTransactionManager
Parameters:
status - the status representation of the transaction

doCleanupAfterCompletion

protected void doCleanupAfterCompletion(java.lang.Object transaction)
Description copied from class: AbstractPlatformTransactionManager
Cleanup resources after transaction completion.

Called after doCommit and doRollback execution, on any outcome. The default implementation does nothing.

Should not throw any exceptions but just issue warnings on errors.

Overrides:
doCleanupAfterCompletion in class AbstractPlatformTransactionManager
Parameters:
transaction - transaction object returned by doGetTransaction