Transaction (Hibernate Core Aggregator 3.6.10.Final API)

All Known Implementing Classes:

CMTTransaction, JDBCTransaction, JoinableCMTTransaction, JTATransaction
```
public interface Transaction
```
Allows the application to define units of work, while maintaining abstraction from the underlying transaction implementation (eg. JTA, JDBC).

A transaction is associated with a Session and is usually instantiated by a call to Session.beginTransaction(). A single session might span multiple transactions since the notion of a session (a conversation between the application and the datastore) is of coarser granularity than the notion of a transaction. However, it is intended that there be at most one uncommitted Transaction associated with a particular Session at any time.

Implementors are not intended to be threadsafe.

Author:

Anton van Straaten

See Also:
Session.beginTransaction(), TransactionFactory

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`begin()` Begin a new transaction.
`void`	`commit()` Flush the associated `Session` and end the unit of work (unless we are in `FlushMode.MANUAL`.
`boolean`	`isActive()` Is this transaction still active? Again, this only returns information in relation to the local transaction, not the actual underlying transaction.
`void`	`registerSynchronization(Synchronization synchronization)` Register a user synchronization callback for this transaction.
`void`	`rollback()` Force the underlying transaction to roll back.
`void`	`setTimeout(int seconds)` Set the transaction timeout for any transaction started by a subsequent call to `begin()` on this instance.
`boolean`	`wasCommitted()` Check if this transaction was successfully committed.
`boolean`	`wasRolledBack()` Was this transaction rolled back or set to rollback only? This only accounts for actions initiated from this local transaction.

- Method Detail
  - begin
```
void begin()
           throws HibernateException
```
    Begin a new transaction.
    
    Throws:
    
    HibernateException
  - commit
```
void commit()
            throws HibernateException
```
    Flush the associated Session and end the unit of work (unless we are in FlushMode.MANUAL.
    This method will commit the underlying transaction if and only if the underlying transaction was initiated by this object.
    
    Throws:
    
    HibernateException
  - rollback
```
void rollback()
              throws HibernateException
```
    Force the underlying transaction to roll back.
    
    Throws:
    
    HibernateException
  - wasRolledBack
```
boolean wasRolledBack()
                      throws HibernateException
```
    Was this transaction rolled back or set to rollback only?
    This only accounts for actions initiated from this local transaction. If, for example, the underlying transaction is forced to rollback via some other means, this method still reports false because the rollback was not initiated from here.
    
    Returns:
    boolean True if the transaction was rolled back via this local transaction; false otherwise.
    
    Throws:
    
    HibernateException
  - wasCommitted
```
boolean wasCommitted()
                     throws HibernateException
```
    Check if this transaction was successfully committed.
    This method could return false even after successful invocation of commit(). As an example, JTA based strategies no-op on commit() calls if they did not start the transaction; in that case, they also report wasCommitted() as false.
    
    Returns:
    boolean True if the transaction was (unequivocally) committed via this local transaction; false otherwise.
    
    Throws:
    
    HibernateException
  - isActive
```
boolean isActive()
                 throws HibernateException
```
    Is this transaction still active?
    Again, this only returns information in relation to the local transaction, not the actual underlying transaction.
    
    Returns:
    boolean Treu if this local transaction is still active.
    
    Throws:
    
    HibernateException
  - registerSynchronization
```
void registerSynchronization(Synchronization synchronization)
                             throws HibernateException
```
    Register a user synchronization callback for this transaction.
    
    Parameters:
    synchronization - The Synchronization callback to register.
    
    Throws:
    
    HibernateException
  - setTimeout
```
void setTimeout(int seconds)
```
    Set the transaction timeout for any transaction started by a subsequent call to begin() on this instance.
    
    Parameters:
    seconds - The number of seconds before a timeout.

Interface Transaction

Method Summary

Method Detail

begin

commit

rollback

wasRolledBack

wasCommitted

isActive

registerSynchronization

setTimeout