File	Doc	Category	Size	Date	Package
Transaction.java	API Doc	Glassfish v2 API	6976	Fri May 04 22:34:56 BST 2007	com.sun.jdo.api.persistence.support

Transaction

Fields Summary

Constructors Summary

Methods Summary
public void	begin() Begin a transaction. The type of transaction is determined by the setting of the Optimistic flag. see #setOptimistic see #getOptimistic throws JDOUserException if a distributed transaction XAResource is assigned to this Transaction
public void	commit() Commit the current transaction.
public boolean	getNontransactionalRead() If this flag is set to true, then queries and navigation are allowed without an active transaction return the value of the nontransactionalRead property.
public boolean	getOptimistic() Optimistic transactions do not hold data store locks until commit time. return the value of the Optimistic property.
public PersistenceManager	getPersistenceManager() The Tranansaction instance is always associated with exactly one PersistenceManager. return the PersistenceManager for this Transaction instance
public int	getQueryTimeout() Gets the number of seconds to wait for a query statement to execute in the datastore associated with this Transaction instance return timout value in seconds; zero means unlimited
public boolean	getRestoreValues() If true, at rollback time instances restore their field values. return the value of the restoreValues property
public boolean	getRetainValues() If true, at commit time instances retain their field values. return the value of the retainValues property
public javax.transaction.Synchronization	getSynchronization() The user-specified Synchronization instance for this Transaction instance. return the user-specified Synchronization instance.
public int	getUpdateTimeout() Gets the number of seconds to wait for an update statement to execute in the datastore associated with this Transaction instance return timout value in seconds; zero means unlimited
public boolean	isActive() Returns whether there is a transaction currently active. return boolean
public void	rollback() Roll back the current transaction.
public void	setNontransactionalRead(boolean flag) If this flag is set to true, then queries and navigation are allowed without an active transaction param flag the value of the nontransactionalRead property.
public void	setOptimistic(boolean optimistic) Optimistic transactions do not hold data store locks until commit time. param optimistic the value of the Optimistic flag.
public void	setQueryTimeout(int timeout) Sets the number of seconds to wait for a query statement to execute in the datastore associated with this Transaction instance param timeout new timout value in seconds; zero means unlimited
public void	setRestoreValues(boolean restoreValues) If true, at rollback instances restore their values and the instances transition to persistent-nontransactional. param restoreValues the value of the restoreValues property
public void	setRetainValues(boolean retainValues) If true, at commit instances retain their values and the instances transition to persistent-nontransactional. Setting this flag also sets the NontransactionalRead flag. param retainValues the value of the retainValues property
public void	setSynchronization(javax.transaction.Synchronization sync) The user can specify a Synchronization instance to be notified on transaction completions. The beforeCompletion method is called prior to flushing instances to the data store. The afterCompletion method is called after performing the data store commit operation. param sync the Synchronization instance to be notified; null for none
public void	setUpdateTimeout(int timeout) Sets the number of seconds to wait for an update statement to execute in the datastore associated with this Transaction instance param timeout new timout value in seconds; zero means unlimited