com.sun.sgs.impl.service.task
Class FixedTimeContinuePolicy

java.lang.Object
  com.sun.sgs.impl.service.task.FixedTimeContinuePolicy

All Implemented Interfaces:

ContinuePolicy

public class FixedTimeContinuePolicy
extends Object
implements ContinuePolicy

An implementation of ContinuePolicy that always provides positive continuation feedback until a fixed amount of time has elapsed in the current transaction. After this time period has elapsed, feedback is always negative for the given transaction. This time period is configurable via the following configuration property:

Property: "com.sun.sgs.impl.service.task.continue.threshold"
Default: 10L

Specifies the time in milliseconds from the start of a transaction during which the shouldContinue method will return true. After this period of time has elapsed in a transaction, this method will always return false.

Field Summary

static long	CONTINUE_THRESHOLD_DEFAULT The default continue threshold.
static String	CONTINUE_THRESHOLD_PROPERTY The property key to set how long a task should run before shouldContinue returns false.

Constructor Summary

FixedTimeContinuePolicy(Properties properties, ComponentRegistry systemRegistry, TransactionProxy txnProxy)
Construct a FixedTimeContinuePolicy instance.

Method Summary

boolean

shouldContinue() Returns true if the currently running task should do more work if it is available.

Methods inherited from class java.lang.Object

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

Field Detail

CONTINUE_THRESHOLD_PROPERTY

public static final String CONTINUE_THRESHOLD_PROPERTY

The property key to set how long a task should run before shouldContinue returns false.

See Also:

Constant Field Values

CONTINUE_THRESHOLD_DEFAULT

public static final long CONTINUE_THRESHOLD_DEFAULT

The default continue threshold.

See Also:

Constant Field Values

Constructor Detail

FixedTimeContinuePolicy

public FixedTimeContinuePolicy(Properties properties,
                               ComponentRegistry systemRegistry,
                               TransactionProxy txnProxy)

Construct a FixedTimeContinuePolicy instance.

Parameters:

properties - the system properties

systemRegistry - the system registry

txnProxy - the system's transaction proxy

Method Detail

shouldContinue

public boolean shouldContinue()

Returns true if the currently running task should do more work if it is available. Otherwise, returns false. This method should only be called from a transactional context.

Specified by:

shouldContinue in interface ContinuePolicy

Returns:

true if the currently running task should do more work if possible; otherwise false

See Also:

TaskManager.shouldContinue()