Transaction (hybris Commerce Suite 18.11)

java.lang.Object
- de.hybris.platform.tx.Transaction

Direct Known Subclasses:

DefaultTransaction
```
public abstract class Transaction
extends java.lang.Object
```
The base class of all supported transaction types

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static class`	`Transaction.TransactionAwareExecution`
`protected static interface`	`Transaction.TransactionFactory`
`protected class`	`Transaction.TxInvalidationSet`

Field Summary

Fields
Modifier and Type	Field and Description
`protected java.util.ArrayList<java.lang.Object>`	`attachedObjects`
`static boolean`	`captureInvalidationStackTraces`
`static java.lang.String`	`CFG_ENABLE_TX_CACHE`
`static java.lang.String`	`CFG_ROLLBACK_ON_COMMIT_ERROR`
`static java.lang.ThreadLocal<java.lang.Long>`	`lastStartTL`

Constructor Summary

Constructors
Constructor and Description

Transaction()

Constructors
Constructor and Description
`Transaction()`

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`activateAsCurrentTransaction()` Makes this transaction the new current transaction.
`void`	`activateCache(boolean activate)` activated the cache for the current transaction (thread).
`void`	`addDelayedConstraint(Item item, Item.ItemConstraint constr)`
`void`	`addToDelayedRemoval(EntityInstance entity)`
`void`	`addToDelayedRollbackLocalInvalidations(java.lang.Object[] key, int type, int topicdepth)`
`protected void`	`assertNoCurrentTransactionRunning()`
`void`	`attach(java.lang.Object objectToAttach)`
`void`	`begin()`
`protected void`	`beginOuter()`
`protected ConnectionImpl`	`bindConnection(Tenant tenant, boolean userTAEnabled)`
`protected boolean`	`calculatedUserTAEnabled(Tenant t)`
`protected void`	`checkBeforeCommit()`
`protected void`	`checkBeforeRollback()`
`protected void`	`checkDelayedConstrains()`
`protected void`	`checkForOtherCurrentTxRunning()`
`void`	`clearDelayedConstrains(PK itemPK)`
`protected void`	`clearRollbackOnly()`
`protected void`	`clearTxBoundConnectionAndNotify(boolean isCommit)`
`protected void`	`clearTxBoundConnectionAndNotifyCommit()`
`protected void`	`clearTxBoundConnectionAndNotifyRollback()`
`void`	`commit()`
`protected void`	`commitConnectionAndClearAndUnsetAsCurrent()`
`protected static Transaction`	`createNew()`
`static Transaction`	`current()` Returns the current transaction instance.
`protected void`	`decreaseOpenTransactionCount()`
`boolean`	`dettach(java.lang.Object objectToAttach)`
`void`	`enableDelayedStore(boolean delay)` the "delayed store" feature enables you to delay all item modifications until the end of the transaction.
`void`	`enableTxCache(boolean enable)` For a running transaction this method allow to define whether or not a local cache should be used.
`static void`	`enableUserTransactionForThread(boolean enable)` Enable or disable the user of UserTransactions for the current thread.
`java.lang.Object`	`execute(TransactionBody transactionBody)` Executes given code inside the current transaction.
`java.lang.Object`	`execute(TransactionBody transactionBody, java.lang.Class<? extends java.lang.Exception>... permittedExceptions)` Executes given code inside the current transaction.
`boolean`	`executeOnCommit(Transaction.TransactionAwareExecution ex)`
`void`	`executeOnRollback(Transaction.TransactionAwareExecution ex)`
`void`	`executeOrDelayStore(EntityInstance entity)`
`protected void`	`finishExecute(java.lang.Throwable thrown, TransactionBody body, java.lang.Class<? extends java.lang.Exception>... permittedExceptions)`
`void`	`flushDelayedStore()` All entity modification delayed within the current transaction will be made persistent right now.
`protected void`	`flushDelayedStore(EntityInstance entity)`
`protected AfterSaveListenerRegistry`	`getAfterSaveEventListenerRegistry()`
`<T> T`	`getAttached(java.lang.Class<T> classOfAttachedObject)`
`EntityInstance`	`getAttachedEntityInstance(PK pk)`
`java.util.Queue<java.lang.Throwable>`	`getBeginTransactionStack()` Returns a stack frame for currents transaction `begin()`.
`protected ConnectionImpl`	`getConnectionToBind(HybrisDataSource dataSource)`
`java.lang.Object`	`getContextEntry(java.lang.Object key)`
`protected static Transaction`	`getCurrentIfExists()`
`protected AfterSaveEventChangesCollector`	`getEntityChangesCollector()`
`long`	`getObjectID()` returns a unique id for this Transaction object.
`int`	`getOpenTransactionCount()` Returns the number of transactions that are open for this thread, which is of course 0 if no transaction is running, 1 if a transaction is running, 2 if we have a nested transaction and so on.
`protected TransactionAwareCache`	`getOrCreateGlobalCacheAdapter(Cache globalCache)`
`protected TransactionAwareCache`	`getOrCreateLegacyCacheAdapter(Cache globalCache)`
`protected TransactionAwareCache`	`getOrCreateTxLocalCacheAdapter(Cache globalCache)`
`EntityInstance`	`getOrLoadTxBoundEntityInstance(PersistencePool pool, java.lang.String jndi, PK pk)`
`TransactionAwareCache`	`getTransactionAwareCache(Cache globalCache)`
`protected static Transaction.TransactionFactory`	`getTransactionsFactory()`
`ConnectionImpl`	`getTXBoundConnection()` Inside a transaction this method returns the transaction bound database connection.
`protected void`	`increaseOpenTransactionCount()`
`void`	`invalidate(AbstractCacheUnit unit, int invalidationType)`
`void`	`invalidate(AbstractCacheUnit unit, int invalidationType, boolean sendImmediately)`
`void`	`invalidate(java.lang.Object[] key, int invalidationTopicDepth, int invalidationType)`
`void`	`invalidate(java.lang.Object[] key, int invalidationTopicDepth, int invalidationType, boolean sendImmediately)`
`void`	`invalidateAndNotifyCommit(java.lang.Object[] key, int invalidationDepth, int invalidationType)`
`void`	`invalidateAndNotifyRollback(java.lang.Object[] key, int invalidationDepth, int invalidationType)`
`void`	`invalidateFromDirectPersistence(java.lang.Object[] key, PK pk, int invalidationType)`
`boolean`	`isCurrent()`
`boolean`	`isDelayedStoreEnabled()` returns true if all entity modifications should be delayed until the end of the TX.
`protected boolean`	`isExceptionIsPermitted(java.lang.Throwable thrown, java.lang.Class<? extends java.lang.Exception>... permittedExceptions)`
`static boolean`	`isInCommitOrRollback()` Checks whether there is a transaction running in the current thread and this transaction is in commit or rollback phase (including invalidation phase).
`boolean`	`isInvalidated(java.lang.Object[] key)`
`boolean`	`isNested()`
`boolean`	`isRollbackOnCommitError()`
`boolean`	`isRollbackOnly()` Tells if this transaction has been marked as rollback-only.
`boolean`	`isRunning()` Tells if there is currently a active transaction.
`boolean`	`isTxCacheEnabled()` Tells whether this (running) transaction is using a local cache for all lookups which cannot be backed by the global 2n level cache due to this transaction having invalidation recorded affecting the lookup.
`static boolean`	`isUserTransactionEnabled()` check the value set using the enableUserTransactionForThread(Boolean) method.
`protected void`	`loadAfterSaveListenerRegistry()`
`void`	`lock(Item item)` Lock's an entity for update, performing a row-level lock on the database.
`protected void`	`logBeforeBegin()`
`protected void`	`logBeforeCommit()`
`protected void`	`logBeforeRollback()`
`void`	`notifyCommit()`
`void`	`notifyRollback()`
`protected void`	`onNestedBeginError(java.lang.Exception e)`
`protected void`	`onOuterBeginError(java.lang.Exception e)`
`static Transaction`	`performCommitBeginEvery(Transaction existingTransaction, int ms)` Helper method to commit a transaction after it's running over given amount of time.
`void`	`printContextInfo()`
`void`	`registerEntityInstance(EntityInstance instance)`
`void`	`reloadEntityInstance(PK pk)`
`protected void`	`removeFromEntityMap(PK pk)`
`void`	`rollback()`
`protected void`	`rollbackConnection()`
`protected void`	`rollbackConnection(ConnectionImpl con)`
`protected void`	`rollbackOuter()`
`protected void`	`setAsCurrent()`
`void`	`setContextEntry(java.lang.Object key, java.lang.Object value)`
`void`	`setRollbackOnCommitError(boolean rollback)` If set to `true` any error happening during database commit will cause also a rollback on database level.
`void`	`setRollbackOnly()` Marks this transaction as rollback only.
`protected static void`	`setTransactionFactory(Transaction.TransactionFactory transactionFactory)`
`void`	`setTransactionIsolationLevel(int level)` Allows to choose the transaction isolation level to be used for starting a new transaction.
`static <ET extends java.lang.Exception> ET`	`toException(java.lang.Throwable e, java.lang.Class<ET> businessExceptionClass)` Utility method to help handling business exceptions coming from `execute(TransactionBody)` method.
`protected static void`	`unsetTransactionFactory()`
`protected void`	`unsetTxBoundConnection()`
`boolean`	`useCache(AbstractCacheUnit cache)`
`protected abstract boolean`	`useCacheInternal(AbstractCacheUnit cacheUnit)` by implementing this method subclasses can influence the result of `useCache(AbstractCacheUnit)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - CFG_ROLLBACK_ON_COMMIT_ERROR
```
public static java.lang.String CFG_ROLLBACK_ON_COMMIT_ERROR
```
  - CFG_ENABLE_TX_CACHE
```
public static final java.lang.String CFG_ENABLE_TX_CACHE
```
    See Also:
    
    Constant Field Values
  - captureInvalidationStackTraces
```
public static boolean captureInvalidationStackTraces
```
  - lastStartTL
```
public static final java.lang.ThreadLocal<java.lang.Long> lastStartTL
```
  - attachedObjects
```
protected final java.util.ArrayList<java.lang.Object> attachedObjects
```
- Constructor Detail
  - Transaction
```
public Transaction()
```
- Method Detail
  - setTransactionFactory
```
protected static void setTransactionFactory(Transaction.TransactionFactory transactionFactory)
```
  - unsetTransactionFactory
```
protected static void unsetTransactionFactory()
```
  - getTransactionsFactory
```
protected static Transaction.TransactionFactory getTransactionsFactory()
```
  - getEntityChangesCollector
```
protected AfterSaveEventChangesCollector getEntityChangesCollector()
```
  - printContextInfo
```
public void printContextInfo()
```
  - getBeginTransactionStack
```
public java.util.Queue<java.lang.Throwable> getBeginTransactionStack()
```
    Returns a stack frame for currents transaction begin(). For diagnostic purposes only.
  - current
```
public static Transaction current()
```
    Returns the current transaction instance. Please note that creating nested transactions by calling begin() does not create new transaction instances. After finishing the (outermost) transaction via commit() or rollback() the instance is discarded. The next call to current() creates a new instance.
  - getCurrentIfExists
```
protected static Transaction getCurrentIfExists()
```
  - isCurrent
```
public boolean isCurrent()
```
  - createNew
```
protected static Transaction createNew()
```
  - getObjectID
```
public long getObjectID()
```
    returns a unique id for this Transaction object. Note that this ID stays the same if you call begin(), commit() more than once on the same object
    
    Returns:
    
    the unique object ID
  - isRunning
```
public final boolean isRunning()
```
    Tells if there is currently a active transaction. Once begin() has been called the transaction is considered to be active. After calling commit() or rollback() the transaction is no longer active. If nested transactions are started it returns true until commit() or rollback() has been called on the outermost transaction even if inner transactions have been ended via commit or rollback.
  - isNested
```
public boolean isNested()
```
  - setRollbackOnly
```
public final void setRollbackOnly()
```
    Marks this transaction as rollback only. If this transaction is nested all enclosing transactions are marked rollback-only too. Calling commit() afterwards will in fact roll back the transaction and throw a TransactionException to indicate that commit has not been successful (only outermost transaction - nested transactions do not throw a exception). Example:
```
 Transaction.current().begin();
 {
        Transaction.current().begin();
        {
                Transaction.current().setRollbackOnly();
        }
        Transaction.current().commit(); // no exception here; no commit or rollback either
 }
 Transaction.current().commit(); // throws exception + does rollback
 
```
  - isRollbackOnly
```
public boolean isRollbackOnly()
```
    Tells if this transaction has been marked as rollback-only. This happens by calling setRollbackOnly() or rollback() upon a nested transaction. See setRollbackOnly() for more details.
  - clearRollbackOnly
```
protected void clearRollbackOnly()
```
  - isInCommitOrRollback
```
public static boolean isInCommitOrRollback()
```
    Checks whether there is a transaction running in the current thread and this transaction is in commit or rollback phase (including invalidation phase). This phase includes the commit/rollback call to the database and the followed notification/invalidation. Note: Do not use this method in your business code. This is a hybris internal method.
    
    Returns:
    
    true in case transaction is in commit or rollback phase
    
    Since:
    
    3.1-u4
  - getOpenTransactionCount
```
public int getOpenTransactionCount()
```
    Returns the number of transactions that are open for this thread, which is of course 0 if no transaction is running, 1 if a transaction is running, 2 if we have a nested transaction and so on.
    
    Returns:
    
    the number of open transactions for this thread
  - increaseOpenTransactionCount
```
protected void increaseOpenTransactionCount()
```
  - decreaseOpenTransactionCount
```
protected void decreaseOpenTransactionCount()
```
  - calculatedUserTAEnabled
```
protected boolean calculatedUserTAEnabled(Tenant t)
```
  - begin
```
public void begin()
           throws TransactionException
```
    Throws:
    
    TransactionException
  - onNestedBeginError
```
protected void onNestedBeginError(java.lang.Exception e)
```
  - onOuterBeginError
```
protected void onOuterBeginError(java.lang.Exception e)
```
  - checkForOtherCurrentTxRunning
```
protected void checkForOtherCurrentTxRunning()
```
  - beginOuter
```
protected void beginOuter()
```
  - loadAfterSaveListenerRegistry
```
protected void loadAfterSaveListenerRegistry()
```
  - getAfterSaveEventListenerRegistry
```
protected AfterSaveListenerRegistry getAfterSaveEventListenerRegistry()
```
  - bindConnection
```
protected ConnectionImpl bindConnection(Tenant tenant,
                                        boolean userTAEnabled)
```
  - logBeforeBegin
```
protected void logBeforeBegin()
```
  - getConnectionToBind
```
protected ConnectionImpl getConnectionToBind(HybrisDataSource dataSource)
                                      throws java.sql.SQLException
```
    Throws:
    
    java.sql.SQLException
  - commit
```
public void commit()
            throws TransactionException
```
    Throws:
    
    TransactionException
  - commitConnectionAndClearAndUnsetAsCurrent
```
protected void commitConnectionAndClearAndUnsetAsCurrent()
```
  - checkBeforeCommit
```
protected void checkBeforeCommit()
```
  - logBeforeCommit
```
protected void logBeforeCommit()
```
  - toException
```
public static <ET extends java.lang.Exception> ET toException(java.lang.Throwable e,
                                                              java.lang.Class<ET> businessExceptionClass)
```
    Utility method to help handling business exceptions coming from execute(TransactionBody) method.
  - clearTxBoundConnectionAndNotifyCommit
```
protected void clearTxBoundConnectionAndNotifyCommit()
```
  - clearTxBoundConnectionAndNotifyRollback
```
protected void clearTxBoundConnectionAndNotifyRollback()
```
  - clearTxBoundConnectionAndNotify
```
protected void clearTxBoundConnectionAndNotify(boolean isCommit)
```
  - unsetTxBoundConnection
```
protected void unsetTxBoundConnection()
```
  - checkDelayedConstrains
```
protected void checkDelayedConstrains()
                               throws ConsistencyCheckException
```
    Throws:
    
    ConsistencyCheckException
  - invalidateAndNotifyCommit
```
public void invalidateAndNotifyCommit(java.lang.Object[] key,
                                      int invalidationDepth,
                                      int invalidationType)
```
  - notifyCommit
```
public void notifyCommit()
```
  - rollback
```
public void rollback()
              throws TransactionException
```
    Throws:
    
    TransactionException
  - checkBeforeRollback
```
protected void checkBeforeRollback()
```
  - logBeforeRollback
```
protected void logBeforeRollback()
```
  - rollbackOuter
```
protected void rollbackOuter()
```
  - rollbackConnection
```
protected void rollbackConnection()
                           throws java.sql.SQLException
```
    Throws:
    
    java.sql.SQLException
  - rollbackConnection
```
protected void rollbackConnection(ConnectionImpl con)
                           throws java.sql.SQLException
```
    Throws:
    
    java.sql.SQLException
  - invalidateAndNotifyRollback
```
public void invalidateAndNotifyRollback(java.lang.Object[] key,
                                        int invalidationDepth,
                                        int invalidationType)
```
  - notifyRollback
```
public void notifyRollback()
```
  - execute
```
public java.lang.Object execute(TransactionBody transactionBody)
                         throws java.lang.Exception
```
    Executes given code inside the current transaction. If this transaction is not currently running it will be started and committed at the end of execution. Otherwise whether begin nor commit is called since the enclosing transaction will do that.
    In case an exception is raised and this method started the transaction itself it will rollback any changes. If no own transaction was started the exception is simply thrown to the calling code.
    
    Parameters:
    
    transactionBody - the code to execute within this transaction
    
    Returns:
    
    the object returned by the executed code
    
    Throws:
    
    java.lang.Exception - in case the executed code raised an exception
  - execute
```
public java.lang.Object execute(TransactionBody transactionBody,
                                java.lang.Class<? extends java.lang.Exception>... permittedExceptions)
                         throws java.lang.Exception
```
    Executes given code inside the current transaction. If this transaction is not currently running it will be started and committed at the end of execution. Otherwise whether begin nor commit is called since the enclosing transaction will do that.
    In case an exception is raised and this method started the transaction itself it will rollback any changes. If no own transaction was started the exception is simply thrown to the calling code.
    
    Parameters:
    
    transactionBody - the code to execute within this transaction
    
    permittedExceptions - a list of exception classes which are actually allowed to be thrown without the transaction being rolled back; may be null if no exceptions are allowed to do so
    
    Returns:
    
    the object returned by the executed code
    
    Throws:
    
    java.lang.Exception - in case the executed code raised an exception
  - finishExecute
```
protected void finishExecute(java.lang.Throwable thrown,
                             TransactionBody body,
                             java.lang.Class<? extends java.lang.Exception>... permittedExceptions)
                      throws java.lang.Exception
```
    Throws:
    
    java.lang.Exception
  - isExceptionIsPermitted
```
protected boolean isExceptionIsPermitted(java.lang.Throwable thrown,
                                         java.lang.Class<? extends java.lang.Exception>... permittedExceptions)
```
  - getContextEntry
```
public java.lang.Object getContextEntry(java.lang.Object key)
```
  - setContextEntry
```
public void setContextEntry(java.lang.Object key,
                            java.lang.Object value)
```
  - invalidate
```
public void invalidate(AbstractCacheUnit unit,
                       int invalidationType)
```
  - invalidate
```
public void invalidate(AbstractCacheUnit unit,
                       int invalidationType,
                       boolean sendImmediately)
```
  - invalidate
```
public void invalidate(java.lang.Object[] key,
                       int invalidationTopicDepth,
                       int invalidationType)
```
  - invalidateFromDirectPersistence
```
public void invalidateFromDirectPersistence(java.lang.Object[] key,
                                            PK pk,
                                            int invalidationType)
```
  - removeFromEntityMap
```
protected void removeFromEntityMap(PK pk)
```
  - invalidate
```
public void invalidate(java.lang.Object[] key,
                       int invalidationTopicDepth,
                       int invalidationType,
                       boolean sendImmediately)
```
  - addToDelayedRollbackLocalInvalidations
```
public void addToDelayedRollbackLocalInvalidations(java.lang.Object[] key,
                                                   int type,
                                                   int topicdepth)
```
  - useCache
```
public final boolean useCache(AbstractCacheUnit cache)
```
  - activateCache
```
public void activateCache(boolean activate)
```
    activated the cache for the current transaction (thread). WARNING: if deactivating the cache be sure you reactivate it inside a finally{} clause to avoid slowdown of the system.
    
    Parameters:
    
    activate - true to activate, false to deactivate
    
    Since:
    
    2.0
  - useCacheInternal
```
protected abstract boolean useCacheInternal(AbstractCacheUnit cacheUnit)
```
    by implementing this method subclasses can influence the result of useCache(AbstractCacheUnit)
  - isInvalidated
```
public boolean isInvalidated(java.lang.Object[] key)
```
    Returns:
    
    true if the given key will be invalidated by executeInvalidations()
  - enableDelayedStore
```
public void enableDelayedStore(boolean delay)
```
    the "delayed store" feature enables you to delay all item modifications until the end of the transaction. note that if you set this parameter it will be resetted after each commit/rollback to the global parameter "transaction.delayedstore" in your project|local.properties.
  - setRollbackOnCommitError
```
public void setRollbackOnCommitError(boolean rollback)
```
    If set to true any error happening during database commit will cause also a rollback on database level. Normally this is not necessary but should be considered in case database transactions are still open after commit. Also see configuration parameter 'transaction.rollbackOnCommitError' which allows to enable this globally.
  - isRollbackOnCommitError
```
public boolean isRollbackOnCommitError()
```
  - isDelayedStoreEnabled
```
public boolean isDelayedStoreEnabled()
```
    returns true if all entity modifications should be delayed until the end of the TX. If not used the enableDelayedStore() method, the result will be the preset given in the parameter "transaction.delayedstore" (or true if this has not been specified)
  - flushDelayedStore
```
public void flushDelayedStore()
```
    All entity modification delayed within the current transaction will be made persistent right now. Please note that no changes will be written to database in case this transaction is already marked as rollback-only!
  - flushDelayedStore
```
protected void flushDelayedStore(EntityInstance entity)
```
  - executeOrDelayStore
```
public void executeOrDelayStore(EntityInstance entity)
```
  - addToDelayedRemoval
```
public void addToDelayedRemoval(EntityInstance entity)
```
  - executeOnRollback
```
public void executeOnRollback(Transaction.TransactionAwareExecution ex)
```
  - executeOnCommit
```
public boolean executeOnCommit(Transaction.TransactionAwareExecution ex)
```
  - enableUserTransactionForThread
```
public static void enableUserTransactionForThread(boolean enable)
```
    Enable or disable the user of UserTransactions for the current thread. If you globally want to enable/disable this feature, use the config parameter transaction.enable=true|false (can be found in the project.properties).
    
    Parameters:
    
    enable - true to enable, false to disable UserTransactions for the current thread
    
    Since:
    
    1.3.1
  - isUserTransactionEnabled
```
public static boolean isUserTransactionEnabled()
```
    check the value set using the enableUserTransactionForThread(Boolean) method. Note that there may be more parameters that are checked internally if a UserTransaction should be started, eg. this method may return true, but the global configuration parameter "transaction.enable" is set to false. in this case no transaction is started.
    
    Returns:
    
    false, if the user transactions are disabled using the 'enableUserTransactionForThread(..)' method, true otherwise.
    
    Since:
    
    1.3.1
  - activateAsCurrentTransaction
```
public void activateAsCurrentTransaction()
```
    Makes this transaction the new current transaction.
    
    Throws:
    
    java.lang.IllegalStateException - if there is still a current transaction set which is running.
    
    Since:
    
    2.10
  - assertNoCurrentTransactionRunning
```
protected void assertNoCurrentTransactionRunning()
```
  - setAsCurrent
```
protected void setAsCurrent()
```
  - registerEntityInstance
```
public void registerEntityInstance(EntityInstance instance)
```
  - getOrLoadTxBoundEntityInstance
```
public EntityInstance getOrLoadTxBoundEntityInstance(PersistencePool pool,
                                                     java.lang.String jndi,
                                                     PK pk)
```
    Parameters:
    
    pool -
    
    jndi -
    
    pk -
    
    Throws:
    
    YNoSuchEntityException - is there is no item for the given pk
  - getAttachedEntityInstance
```
public EntityInstance getAttachedEntityInstance(PK pk)
```
  - reloadEntityInstance
```
public void reloadEntityInstance(PK pk)
```
  - getTXBoundConnection
```
public ConnectionImpl getTXBoundConnection()
```
    Inside a transaction this method returns the transaction bound database connection.
    
    Throws:
    
    java.lang.IllegalStateException - if called outside a transaction
  - setTransactionIsolationLevel
```
public void setTransactionIsolationLevel(int level)
```
    Allows to choose the transaction isolation level to be used for starting a new transaction. Please set before starting. Otherwise behavior is not defined (see Connection.setTransactionIsolation(int) for details)!
    Use as follows:
```
 Transaction tx = Transaction.current();
 tx.setTransactionIsolationLevel(Connection.TRANSACTION_READ_COMMITTED);
 tx.begin();
 // ... business code
 tx.commit();
 
```
    Also note that after commit or rolling back the isolation level setting is cleared - it has to be set for each transaction anew!
    Parameters:
    
    level - the level - see Connection for details
  - performCommitBeginEvery
```
public static Transaction performCommitBeginEvery(Transaction existingTransaction,
                                                  int ms)
```
    Helper method to commit a transaction after it's running over given amount of time. This method performs a commit on existing transaction and starts new one when elapsed transaction time exceeds given threshold. When new transaction is started, it is returned so that the caller can use it to do further transaction processing (e.g. commit()).
    
    Parameters:
    
    existingTransaction - existing transaction
    
    ms - transaction time threshold
    
    Returns:
    
    New transaction object if the elapsed transaction time is greater than the threshold. Existing transaction otherwise.
  - clearDelayedConstrains
```
public void clearDelayedConstrains(PK itemPK)
```
  - addDelayedConstraint
```
public void addDelayedConstraint(Item item,
                                 Item.ItemConstraint constr)
```
  - lock
```
public void lock(Item item)
          throws java.lang.IllegalStateException
```
    Lock's an entity for update, performing a row-level lock on the database.
    Calls to lock can only be made between calls to begin() and commit() or rollback(). All locks that are acquired during a transaction are automatically released on calls to commit() or rollback(). If a lock is held by another transaction, this method will block until the lock can be acquired.
    Depending on a the DBMS, a lock on a single row may result in locking an entire page. Locks should not be acquired on long-running transactions unless absolutely necessary. Note, that on some DBMS's, such as HSQLDB, row-level locking is not supported and any attempt to perform a lock will throw an UnsupportedOperationException.
    Also note that it's crucial to use the correct isolation level for getting the correct result after locking a item. For instance if you expect that a attribute ma have been changed while waiting for that lock it may be a good idea to use Connection.TRANSACTION_READ_COMMITTED to allow reading these changed values!
    
    Parameters:
    
    item - The entity to lock
    
    Throws:
    
    java.lang.NullPointerException - If an null value is passed into the lock method or if no primary key has been assigned to the entity.
    
    java.lang.IllegalStateException - If an attempt is made to lock an entity outside the bounds of the transaction, or an attempt is made to lock an entity that does not exist in the database.
    
    java.lang.UnsupportedOperationException - If the database does not support SELECT FOR UPDATE
  - getTransactionAwareCache
```
public TransactionAwareCache getTransactionAwareCache(Cache globalCache)
```
  - getOrCreateGlobalCacheAdapter
```
protected TransactionAwareCache getOrCreateGlobalCacheAdapter(Cache globalCache)
```
  - getOrCreateTxLocalCacheAdapter
```
protected TransactionAwareCache getOrCreateTxLocalCacheAdapter(Cache globalCache)
```
  - getOrCreateLegacyCacheAdapter
```
protected TransactionAwareCache getOrCreateLegacyCacheAdapter(Cache globalCache)
```
  - isTxCacheEnabled
```
public boolean isTxCacheEnabled()
```
    Tells whether this (running) transaction is using a local cache for all lookups which cannot be backed by the global 2n level cache due to this transaction having invalidation recorded affecting the lookup. The default mode is true and has the config setting CFG_ENABLE_TX_CACHE.
    
    See Also:
    
    enableTxCache(boolean)
  - enableTxCache
```
public void enableTxCache(boolean enable)
```
    For a running transaction this method allow to define whether or not a local cache should be used.
    
    See Also:
    
    isTxCacheEnabled()
  - attach
```
public void attach(java.lang.Object objectToAttach)
```
  - dettach
```
public boolean dettach(java.lang.Object objectToAttach)
```
  - getAttached
```
public <T> T getAttached(java.lang.Class<T> classOfAttachedObject)
```

Class Transaction

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

CFG_ROLLBACK_ON_COMMIT_ERROR

CFG_ENABLE_TX_CACHE

captureInvalidationStackTraces

lastStartTL

attachedObjects

Constructor Detail

Transaction

Method Detail

setTransactionFactory

unsetTransactionFactory

getTransactionsFactory

getEntityChangesCollector

printContextInfo

getBeginTransactionStack

current

getCurrentIfExists

isCurrent

createNew

getObjectID

isRunning

isNested

setRollbackOnly

isRollbackOnly

clearRollbackOnly

isInCommitOrRollback

getOpenTransactionCount

increaseOpenTransactionCount

decreaseOpenTransactionCount

calculatedUserTAEnabled

begin

onNestedBeginError

onOuterBeginError

checkForOtherCurrentTxRunning

beginOuter

loadAfterSaveListenerRegistry

getAfterSaveEventListenerRegistry

bindConnection

logBeforeBegin

getConnectionToBind

commit

commitConnectionAndClearAndUnsetAsCurrent

checkBeforeCommit

logBeforeCommit

toException

clearTxBoundConnectionAndNotifyCommit

clearTxBoundConnectionAndNotifyRollback

clearTxBoundConnectionAndNotify

unsetTxBoundConnection

checkDelayedConstrains

invalidateAndNotifyCommit

notifyCommit

rollback

checkBeforeRollback

logBeforeRollback

rollbackOuter

rollbackConnection

rollbackConnection

invalidateAndNotifyRollback

notifyRollback

execute

execute

finishExecute

isExceptionIsPermitted

getContextEntry

setContextEntry

invalidate

invalidate

invalidate

invalidateFromDirectPersistence

removeFromEntityMap

invalidate

addToDelayedRollbackLocalInvalidations

useCache