AbstractPool (Payara Project 5.184 API)

java.lang.Object
- com.sun.ejb.containers.util.pool.AbstractPool

All Implemented Interfaces:

Pool

Direct Known Subclasses:

NonBlockingPool
```
public abstract class AbstractPool
extends Object
implements Pool
```
Abstract pool provides the basic implementation of an object pool. The implementation uses a linked list to maintain a list of (available) objects. If the pool is empty it simply creates one using the ObjectFactory instance. Subclasses can change this behaviour by overriding getObject(...) and returnObject(....) methods. This class provides basic support for synchronization, event notification, pool shutdown and pool object recycling. It also does some very basic bookkeeping like the number of objects created, number of threads waiting for object.
Subclasses can make use of these book-keeping data to provide complex pooling mechanism like LRU / MRU / Random. Also, note that AbstractPool does not have a notion of pool limit. It is upto to the derived classes to implement these features.

Field Summary

Fields
Modifier and Type	Field and Description
`protected static Logger`	`_logger`
`protected String`	`appName`
`protected long`	`beanId`
`protected String`	`configData`
`protected ClassLoader`	`containerClassLoader`
`protected int`	`createdCount`
`protected int`	`destroyedCount`
`protected String`	`ejbName`
`protected ObjectFactory`	`factory`
`protected int`	`idleTimeoutInSeconds`
`protected ArrayList<Object>`	`list`
`protected int`	`maxPoolSize`
`protected long`	`maxWaitTimeInMillis`
`protected String`	`modName`
`protected String`	`poolName`
`protected EjbPoolProbeProvider`	`poolProbeNotifier`
`protected int`	`poolReturned`
`protected int`	`poolSuccess`
`protected int`	`resizeQuantity`
`protected int`	`steadyPoolSize`
`protected int`	`waitCount`

Constructor Summary

Constructors
Constructor and Description

AbstractPool()

Constructors
Constructor and Description
`AbstractPool()`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`appendStats(StringBuffer sbuf)`
`abstract void`	`close()`
`String`	`getAllAttrValues()`
`String`	`getAllMonitoredAttrbuteValues()`
`int`	`getCreatedCount()`
`int`	`getDestroyedCount()`
`int`	`getIdleTimeoutInSeconds()`
`int`	`getJmsMaxMessagesLoad()`
`int`	`getMaxPoolSize()`
`long`	`getMaxWaitTimeInMillis()`
`int`	`getNumBeansInPool()`
`int`	`getNumThreadsWaiting()`
`Object`	`getObject(boolean canWait, Object param)`
`Object`	`getObject(long maxWaitTime, Object param)`
`int`	`getPoolSuccess()`
`int`	`getResizeQuantity()`
`int`	`getSize()`
`int`	`getSteadyPoolSize()`
`int`	`getTotalBeansCreated()`
`int`	`getTotalBeansDestroyed()`
`int`	`getWaitCount()`
`protected abstract void`	`removeIdleObjects()`
`void`	`setConfigData(String configData)`
`void`	`setContainerClassLoader(ClassLoader loader)`
`void`	`setInfo(String appName, String modName, String ejbName)`
`protected void`	`unregisterProbeProvider()`

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

Methods inherited from interface com.sun.ejb.containers.util.pool.Pool
destroyObject, getObject, returnObject

Field Detail

_logger
```
protected static final Logger _logger
```

list
```
protected final ArrayList<Object> list
```

factory
```
protected ObjectFactory factory
```

waitCount
```
protected int waitCount
```

createdCount
```
protected int createdCount
```

steadyPoolSize
```
protected int steadyPoolSize
```

resizeQuantity
```
protected int resizeQuantity
```

maxPoolSize
```
protected int maxPoolSize
```

maxWaitTimeInMillis
```
protected long maxWaitTimeInMillis
```

idleTimeoutInSeconds
```
protected int idleTimeoutInSeconds
```

containerClassLoader

protected ClassLoader containerClassLoader

destroyedCount
```
protected int destroyedCount
```

poolSuccess
```
protected int poolSuccess
```

poolName
```
protected String poolName
```

poolReturned
```
protected int poolReturned
```

configData
```
protected String configData
```

poolProbeNotifier

protected EjbPoolProbeProvider poolProbeNotifier

appName
```
protected String appName
```

modName
```
protected String modName
```

ejbName
```
protected String ejbName
```

beanId
```
protected long beanId
```

Constructor Detail
- AbstractPool
```
public AbstractPool()
```

Method Detail

setContainerClassLoader

public void setContainerClassLoader(ClassLoader loader)

setInfo

public void setInfo(String appName,
                    String modName,
                    String ejbName)

getObject

public Object getObject(boolean canWait,
                        Object param)
                 throws PoolException

Specified by:: getObject in interface Pool
Returns:
Throws:: PoolException

getObject

public Object getObject(long maxWaitTime,
                        Object param)
                 throws PoolException

Specified by:: getObject in interface Pool
Returns:
Throws:: PoolException

removeIdleObjects

protected abstract void removeIdleObjects()

close
```
public abstract void close()
```

getCreatedCount
```
public int getCreatedCount()
```

getDestroyedCount
```
public int getDestroyedCount()
```

getPoolSuccess
```
public int getPoolSuccess()
```

getSize
```
public int getSize()
```

getWaitCount
```
public int getWaitCount()
```

getSteadyPoolSize
```
public int getSteadyPoolSize()
```

getResizeQuantity
```
public int getResizeQuantity()
```

getMaxPoolSize
```
public int getMaxPoolSize()
```

getMaxWaitTimeInMillis
```
public long getMaxWaitTimeInMillis()
```

getIdleTimeoutInSeconds
```
public int getIdleTimeoutInSeconds()
```

setConfigData

public void setConfigData(String configData)

appendStats

public void appendStats(StringBuffer sbuf)

getJmsMaxMessagesLoad
```
public int getJmsMaxMessagesLoad()
```

getNumBeansInPool
```
public int getNumBeansInPool()
```

getNumThreadsWaiting
```
public int getNumThreadsWaiting()
```

getTotalBeansCreated
```
public int getTotalBeansCreated()
```

getTotalBeansDestroyed
```
public int getTotalBeansDestroyed()
```

getAllMonitoredAttrbuteValues

public String getAllMonitoredAttrbuteValues()

getAllAttrValues
```
public String getAllAttrValues()
```

unregisterProbeProvider

protected void unregisterProbeProvider()

Class AbstractPool

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface com.sun.ejb.containers.util.pool.Pool

Field Detail

_logger

list

factory

waitCount

createdCount

steadyPoolSize

resizeQuantity

maxPoolSize

maxWaitTimeInMillis

idleTimeoutInSeconds

containerClassLoader

destroyedCount

poolSuccess

poolName

poolReturned

configData

poolProbeNotifier

appName

modName

ejbName

beanId

Constructor Detail

AbstractPool

Method Detail

setContainerClassLoader

setInfo

getObject

getObject

removeIdleObjects

close

getCreatedCount

getDestroyedCount

getPoolSuccess

getSize

getWaitCount

getSteadyPoolSize

getResizeQuantity

getMaxPoolSize

getMaxWaitTimeInMillis

getIdleTimeoutInSeconds

setConfigData

appendStats

getJmsMaxMessagesLoad

getNumBeansInPool

getNumThreadsWaiting

getTotalBeansCreated

getTotalBeansDestroyed

getAllMonitoredAttrbuteValues

getAllAttrValues

unregisterProbeProvider