org.ow2.jonas.lib.ejb21
Class JEntitySwitchDB

java.lang.Object
  org.ow2.jonas.lib.ejb21.JEntitySwitch
      org.ow2.jonas.lib.ejb21.JEntitySwitchDB

public class JEntitySwitchDB
extends JEntitySwitch

DataBase lock policy : 1 instance per transactions. Transaction Isolation is managed by the database.

Author:

Philippe Durieux

Field Summary

protected JEntityContext	ihContext EntityContext for non-transacted requests
protected HashMap	itsContext Map of EntityContext's for transactions Key is the Transaction.

Fields inherited from class org.ow2.jonas.lib.ejb21.JEntitySwitch

bf, blockedtx, counter, countIH, countIT, deadlockTimeout, estimestamp, FEW_SECONDS, ident, inactivityTimeout, inDirtyList, infindbypk, isdetached, isremoved, lazyregister, local, lockpolicy, mustReload, mustStore, myTimerService, pk, readTimeout, reentrant, remote, runningtx, shared, todiscard, txUpdates, waiters, writingtx

Constructor Summary

JEntitySwitchDB()
empty constructor.

Method Summary

void	endIH() Called only for CS policy, after passivateIH
protected JEntityContext	getContext4Tx(Transaction tx)
JEntityContext	getICtx(Transaction tx, boolean checkr) Get a context/instance associated with this transaction Called at each request on the bean (including remove)
int	getState()
protected void	initpolicy(JEntityFactory bf)
int	passivateIH(boolean store, boolean passivate) try to passivate instances
protected void	removeContext4Tx(Transaction tx)
protected void	setContext4Tx(Transaction tx, JEntityContext ctx)
void	waitmyturn(Transaction tx)

Methods inherited from class org.ow2.jonas.lib.ejb21.JEntitySwitch

bindICtx, detachPk, discardContext, forceDiscardICtx, getBeanFactory, getBlockingTx, getEntityTimerService, getICtx, getLocal, getPolicy, getPrimaryKey, getRemote, init, isInFindByPK, isWriteInsideTx, lazyRegistering, mapICtx, notifyTimeout, notifyWriting, registerCtx, releaseICtx, setInFindByPK, terminate, tryBindICtx, txCompleted

Methods inherited from class java.lang.Object

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

Field Detail

ihContext

protected JEntityContext ihContext

EntityContext for non-transacted requests

itsContext

protected HashMap itsContext

Map of EntityContext's for transactions Key is the Transaction.

Constructor Detail

JEntitySwitchDB

public JEntitySwitchDB()

empty constructor. Object is initialized via init() because it is implemented differently according to jorm mappers.

Method Detail

initpolicy

protected void initpolicy(JEntityFactory bf)

Specified by:

initpolicy in class JEntitySwitch

getContext4Tx

protected JEntityContext getContext4Tx(Transaction tx)

Parameters:

tx - The Transaction

Returns:

the JEntityContext used for this tx

setContext4Tx

protected void setContext4Tx(Transaction tx,
                             JEntityContext ctx)

Parameters:

tx - The Transaction

the - JEntityContext used for this tx

removeContext4Tx

protected void removeContext4Tx(Transaction tx)

waitmyturn

public void waitmyturn(Transaction tx)

passivateIH

public int passivateIH(boolean store,
                       boolean passivate)

try to passivate instances

Specified by:

passivateIH in class JEntitySwitch

Parameters:

store - not used for this policy

passivate - always true for this policy

Returns:

result of operation: (not really used here) ALL_DONE = instances passivated NOT_DONE = not all passivated

endIH

public void endIH()

Description copied from class: JEntitySwitch

Called only for CS policy, after passivateIH

Specified by:

endIH in class JEntitySwitch

getICtx

public JEntityContext getICtx(Transaction tx,
                              boolean checkr)

Get a context/instance associated with this transaction Called at each request on the bean (including remove)

Overrides:

getICtx in class JEntitySwitch

Parameters:

tx - - the Transaction object

checkr - - true if we must check non-reentrance.

Returns:

the BeanContext

getState

public int getState()

Specified by:

getState in class JEntitySwitch

Returns:

State of this instance. State values are 0=in-tx, 1=out-tx, 2=idle, 3=passive, 4=removed. we don't synchronize this method to avoid jadmin blocks