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Java Source Code / Java Documentation » Database ORM » db ojb » org.apache.ojb.broker.core

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.apache.ojb.broker.core .PersistenceBrokerFactoryBaseImpl

org.apache.ojb.broker.core .PersistenceBrokerFactoryDefaultImpl

All known Subclasses:   org.apache.ojb.broker.core .PersistenceBrokerFactorySyncImpl,
PersistenceBrokerFactoryDefaultImpl
public class PersistenceBrokerFactoryDefaultImpl extends PersistenceBrokerFactoryBaseImpl (Code)
This is the default implementation of the PersistenceBrokerFactoryIF interface.
This implementation use a pool of org.apache.ojb.broker.PersistenceBroker instances [abbr. PB]. Each pooled PB instance (the implementation class was specified in OJB configuration file) is wrapped by PoolablePersistenceBroker class before add to pool.

When calling PersistenceBrokerFactoryDefaultImpl.createPersistenceBroker or PersistenceBrokerFactoryDefaultImpl.defaultPersistenceBroker the pooled-PB instance (PoolablePersistenceBroker) on its part was wrapped with PersistenceBrokerHandle handle.

When a client do a PB.close() call on the handle the wrapped PoolablePersistenceBroker will be closed and returned to pool. All further method calls on the handle (except PB.isClosed() and PB.isInTransaction()) result in an exception.
Each different org.apache.ojb.broker.PBKey (based on PBKey.equals(...) method) get its own PB-pool.
See Also:   PersistenceBrokerFactoryBaseImpl
author:
   Thomas Mahler
author:
   Armin Waibel
version:
   $Id: PersistenceBrokerFactoryDefaultImpl.java,v 1.11.2.4 2005/12/21 22:25:00 tomdz Exp $

Inner Class :class PBKeyedPoolableObjectFactory implements KeyedPoolableObjectFactory

Constructor Summary
public PersistenceBrokerFactoryDefaultImpl()


Method Summary
public int activePersistenceBroker()

public PersistenceBrokerInternal createPersistenceBroker(PBKey pbKey)
     Return broker instance from pool.
public Properties getPoolConfiguration()

public synchronized void releaseAllInstances()

public void setPoolConfiguration(Properties prop)

public void shutdown()

protected PersistenceBrokerInternal wrapBrokerWithPoolingHandle(PersistenceBrokerInternal broker, KeyedObjectPool pool)
     Each real pooled PersistenceBroker instance was wrapped by a pooling handle when a new instance was created.
protected PersistenceBrokerInternal wrapRequestedBrokerInstance(PersistenceBrokerInternal broker)
     Wraps the requested pooled broker instance.

Constructor Detail
PersistenceBrokerFactoryDefaultImpl
public PersistenceBrokerFactoryDefaultImpl()(Code)

Method Detail
activePersistenceBroker
public int activePersistenceBroker()(Code)

createPersistenceBroker
public PersistenceBrokerInternal createPersistenceBroker(PBKey pbKey) throws PBFactoryException(Code)
Return broker instance from pool. If given PBKey was not found in pool a new pool for given
Parameters:
  pbKey -
throws:
  PBFactoryException -

getPoolConfiguration
public Properties getPoolConfiguration()(Code)
could be used for monitoring TODO: is this useful?

releaseAllInstances
public synchronized void releaseAllInstances()(Code)

See Also:   PersistenceBrokerFactoryIF.releaseAllInstances

setPoolConfiguration
public void setPoolConfiguration(Properties prop)(Code)
could be used for runtime configuration TODO: is this useful?

shutdown
public void shutdown()(Code)

wrapBrokerWithPoolingHandle
protected PersistenceBrokerInternal wrapBrokerWithPoolingHandle(PersistenceBrokerInternal broker, KeyedObjectPool pool)(Code)
Each real pooled PersistenceBroker instance was wrapped by a pooling handle when a new instance was created.
See Also:   PoolablePersistenceBroker
Parameters:
  broker - real PersistenceBroker instance
Parameters:
  pool - use KeyedObjectPool wrapped broker instance

wrapRequestedBrokerInstance
protected PersistenceBrokerInternal wrapRequestedBrokerInstance(PersistenceBrokerInternal broker)(Code)
Wraps the requested pooled broker instance. The returned handle warps a pooled broker instance to avoid corruption of already closed broker instances.
See Also:   PersistenceBrokerHandle
Parameters:
  broker - The broker handle.

Methods inherited from org.apache.ojb.broker.core.PersistenceBrokerFactoryBaseImpl
public int activePersistenceBroker()(Code)(Java Doc)
public void configure(Configuration config) throws ConfigurationException(Code)(Java Doc)
protected PersistenceBrokerInternal createNewBrokerInstance(PBKey key) throws PBFactoryException(Code)(Java Doc)
public PersistenceBrokerInternal createPersistenceBroker(PBKey pbKey) throws PBFactoryException(Code)(Java Doc)
public PersistenceBrokerInternal createPersistenceBroker(String jcdAlias, String user, String password) throws PBFactoryException(Code)(Java Doc)
public PersistenceBrokerInternal defaultPersistenceBroker() throws PBFactoryException(Code)(Java Doc)
public PBKey getDefaultKey()(Code)(Java Doc)
public synchronized void releaseAllInstances()(Code)(Java Doc)
public void setDefaultKey(PBKey key)(Code)(Java Doc)
public void shutdown()(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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