oracle.jbo.mom
Class LongRunningStatementMonitor

java.lang.Object
  java.lang.Thread
      oracle.jbo.mom.LongRunningStatementMonitor

All Implemented Interfaces:

java.lang.Runnable

public class LongRunningStatementMonitor
extends java.lang.Thread

This thread monitors the long running statements and terminates the run away statements. It is started as a Daemon thread. Long running statements are generated by View Objects and Transaction Objects that have positive statement timeout values.

Since:

JDeveloper 10.1.3

See Also:

ViewObject.setQueryTimeOut(int),

Users can create their own LongRunningStatementHandle and add it to the monitor using the monitor API.

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Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

LongRunningStatementMonitor()
Creates a new LongRunningStatementMonitor thread.

Method Summary

protected void	finalize() Stop the thread gracefully.
void	monitor(LongRunningStatementHandle handle) Adds the handle to the monitored list.
void	run() The Thread begins with a loop to iterate over the monitored list of handles and invokes the cancel on expired ones.
void	stopGracefully() Terminates the thread gracefully.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Detail

LongRunningStatementMonitor

public LongRunningStatementMonitor()

Creates a new LongRunningStatementMonitor thread.

Method Detail

monitor

public void monitor(LongRunningStatementHandle handle)

Adds the handle to the monitored list.

Parameters:

handle - a LongRunningStatementHandle

run

public void run()

The Thread begins with a loop to iterate over the monitored list of handles and invokes the cancel on expired ones. Between each iteration the thread sleeps for a second. To terminate the thread use the stopGracefully method. Since the thread is a Daemon thread it should not obstruct the shutdown of the JVM

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

stopGracefully

public void stopGracefully()

Terminates the thread gracefully.

finalize

protected void finalize()
                 throws java.lang.Throwable

Stop the thread gracefully.

Overrides:

finalize in class java.lang.Object

Throws:

java.lang.Throwable