org.objectweb.jonas_ejb.container
Class JEntitySwitchCRC

java.lang.Object
  extended byorg.objectweb.jonas_ejb.container.JEntitySwitch
      extended byorg.objectweb.jonas_ejb.container.JEntitySwitchCRC

public class JEntitySwitchCRC
extends JEntitySwitch

JEntitySwitch is used internally to synchronize accesses to the entity context and thus to the entity bean instance. All parts common to EJBObject and EJBLocalObject should be here. Different policies can be applied to manage context/instance pairs: - only 1 pair (container manages the transaction isolation) - 1 pair for each transaction (transaction isolation managed by DataBase) - 2 pairs (1 for transactional accesses, 1 for non transaction accesses)

Author:
Philippe Durieux, Philippe Coq

Field Summary
protected  JEntityContext ihContext
          EntityContext for non-transacted requests
protected  JEntityContext itContext
          EntityContext for transacted requests
protected static int maxtime
           
 
Fields inherited from class org.objectweb.jonas_ejb.container.JEntitySwitch
bf, blockedtx, counter, countIH, discarded, ident, inDirtyList, isremoved, lazyregister, local, lockpolicy, mustReload, myTimerService, pk, remote, runningtx, shared, txUpdates, waiters, writingtx
 
Constructor Summary
JEntitySwitchCRC()
          empty constructor.
 
Method Summary
 void endIH()
           
protected  JEntityContext getContext4Tx(javax.transaction.Transaction tx)
           
 int getState()
           
protected  void initpolicy(JEntityFactory bf)
           
 void notifyWriting(javax.transaction.Transaction tx, JEntityContext bctx)
           
 boolean passivateIH(boolean passivation)
          try to passivate IH (called from swapper)
 void releaseICtx(javax.transaction.Transaction tx)
          Release a context/instance at end of request.
protected  void removeContext4Tx(javax.transaction.Transaction tx)
           
protected  void setContext4Tx(javax.transaction.Transaction tx, JEntityContext ctx)
           
 void waitmyturn(javax.transaction.Transaction tx)
           
 
Methods inherited from class org.objectweb.jonas_ejb.container.JEntitySwitch
bindICtx, discardICtx, getBeanFactory, getBlockedTx, getBlockingTx, getEntityTimerService, getICtx, getICtx, getLocal, getPolicy, getPrimaryKey, getRemote, init, mapICtx, noLongerUsed, notifyTimeout, registerCtx, terminate, tryBindICtx, txCompleted
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

itContext

protected JEntityContext itContext
EntityContext for transacted requests


ihContext

protected JEntityContext ihContext
EntityContext for non-transacted requests


maxtime

protected static int maxtime
Constructor Detail

JEntitySwitchCRC

public JEntitySwitchCRC()
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(javax.transaction.Transaction tx)

setContext4Tx

protected void setContext4Tx(javax.transaction.Transaction tx,
                             JEntityContext ctx)
Parameters:
tx - The Transaction

removeContext4Tx

protected void removeContext4Tx(javax.transaction.Transaction tx)

waitmyturn

public void waitmyturn(javax.transaction.Transaction tx)

releaseICtx

public void releaseICtx(javax.transaction.Transaction tx)
Release a context/instance at end of request.

Specified by:
releaseICtx in class JEntitySwitch
Parameters:
tx - - transaction associated to this context

passivateIH

public boolean passivateIH(boolean passivation)
try to passivate IH (called from swapper)

Specified by:
passivateIH in class JEntitySwitch
Parameters:
passivation - false if only store bean state.
Returns:
false if instance still in memory (busy for example)

endIH

public void endIH()
Specified by:
endIH in class JEntitySwitch

notifyWriting

public void notifyWriting(javax.transaction.Transaction tx,
                          JEntityContext bctx)
Specified by:
notifyWriting in class JEntitySwitch

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