org.jasig.portal.utils
Class PooledCounterStore

java.lang.Object
  org.jasig.portal.utils.PooledCounterStore

All Implemented Interfaces:

ICounterStore

public class PooledCounterStore
extends Object
implements ICounterStore

Version:

$Revision$

Author:

Eric Dalquist

Field Summary

protected org.apache.commons.logging.Log

logger

Constructor Summary

PooledCounterStore()

Method Summary

void	createCounter(String counterName) Create a new coutner
int	getIncrement()
int	getIncrementIntegerId(String counterName) Obtain current coutner value and increment it.
int	getInitialValue()
int	getMaxWait()
int	getMinWait()
int	getRetryCount()
void	reset()
void	setCounter(String counterName, int value) Reset a value of a counter.
void	setDataSource(DataSource dataSource) The DataSource to use for counter generation
void	setIncrement(int increment) In-memory counter value pool size.
void	setInitialValue(int initialValue) Initial value to set for a counter when creating it
void	setMaxWait(int maxWait) Maximum number of milliseconds to wait between retries
void	setMinWait(int minWait) Minimum number of milliseconds to wait between retries
void	setRetryCount(int retryCount) Number of attempts to make when a database update fails to to concurrent update from another machine
void	setTransactionManager(PlatformTransactionManager transactionManager) The transaction manager to use for updates to the counter table
protected void	waitToRetry() Blocks for the number of milliseconds computed via the minWait and maxWait properties

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final org.apache.commons.logging.Log logger

Constructor Detail

PooledCounterStore

public PooledCounterStore()

Method Detail

setDataSource

public void setDataSource(DataSource dataSource)

The DataSource to use for counter generation

setTransactionManager

public void setTransactionManager(PlatformTransactionManager transactionManager)

The transaction manager to use for updates to the counter table

getInitialValue

public int getInitialValue()

setInitialValue

public void setInitialValue(int initialValue)

Initial value to set for a counter when creating it

getIncrement

public int getIncrement()

setIncrement

public void setIncrement(int increment)

In-memory counter value pool size. The higher this value the fewer database access will be needed but more values may be lost at app shutdown

getRetryCount

public int getRetryCount()

setRetryCount

public void setRetryCount(int retryCount)

Number of attempts to make when a database update fails to to concurrent update from another machine

getMinWait

public int getMinWait()

setMinWait

public void setMinWait(int minWait)

Minimum number of milliseconds to wait between retries

getMaxWait

public int getMaxWait()

setMaxWait

public void setMaxWait(int maxWait)

Maximum number of milliseconds to wait between retries

createCounter

public void createCounter(String counterName)

Description copied from interface: ICounterStore

Create a new coutner

Specified by:

createCounter in interface ICounterStore

Parameters:

counterName - a name for the new counter

getIncrementIntegerId

public int getIncrementIntegerId(String counterName)

Description copied from interface: ICounterStore

Obtain current coutner value and increment it.

Specified by:

getIncrementIntegerId in interface ICounterStore

Parameters:

counterName - a String value

Returns:

an int value

setCounter

public void setCounter(String counterName,
                       int value)

Description copied from interface: ICounterStore

Reset a value of a counter.

Specified by:

setCounter in interface ICounterStore

Parameters:

counterName - a counter name

value - a new counter value

reset

public void reset()

waitToRetry

protected void waitToRetry()

Blocks for the number of milliseconds computed via the minWait and maxWait properties