com.aspc.DBObj.Internal

Class TransactionHeaderScanner

java.lang.Object

java.lang.Thread

com.aspc.DBObj.Internal.TransactionHeaderScanner

All Implemented Interfaces:

ServerProcess, java.lang.Runnable

public final class TransactionHeaderScanner
extends java.lang.Thread
implements ServerProcess

check the transaction header for missing transactions. THREAD MODE: MULTI-THREADED

Since:

January 7, 2002, 12:31 PM

Author:

Nigel Leck

Nested Class Summary

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

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

Field Summary

Fields

Modifier and Type	Field and Description
static long	MAX_PROCESS_TIME The MAXIMUM PROCESSING TIME of one call.
static java.lang.String	PROPERTY_TRANSACTION_SCANNER_EXCLUDE_LAYERS Exclude layers from scan
static java.lang.String	PROPERTY_TRANSACTION_SCANNER_INCLUDE_LAYERS include only these layers in the scan
static java.lang.String	PROPERTY_TRANSACTION_SCANNER_MAX_PROCESS_TIME The property to set the default maximum processing time.
static java.lang.String	PROPERTY_TRANSACTION_SCANNER_PERIOD The property to set the scan period ( in milliseconds).
static java.lang.String	PROPERTY_TRANSACTION_SCANNER_SAFTEY_MARGIN_TIME The property to set the safety margin on top of the period of maximum processing time before we mark the task as dead ( milliseconds).
static long	SAFTEY_MARGIN_TIME the safety margin on top of the period of maximum processing time before we mark the task as dead ( milliseconds)
static long	SCAN_PERIOD scan period ( in milliseconds).

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Method Summary

Modifier and Type	Method and Description
static void	checkUp() Check if the background loader is running.
static void	disable() disable the scanner
static void	enable() enable the scanner
boolean	isCurrent() Is this the current process ?
java.lang.String	makeThreadName() get the progress message
void	paused() This process has been paused.
void	resumed() This process has been resumed.
void	run() run
static void	scan() begin the transaction scanner.
void	terminated() This process has been terminated.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, 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

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

Field Detail

PROPERTY_TRANSACTION_SCANNER_MAX_PROCESS_TIME

public static final java.lang.String PROPERTY_TRANSACTION_SCANNER_MAX_PROCESS_TIME

The property to set the default maximum processing time.

See Also:

Constant Field Values

PROPERTY_TRANSACTION_SCANNER_PERIOD

public static final java.lang.String PROPERTY_TRANSACTION_SCANNER_PERIOD

The property to set the scan period ( in milliseconds).

See Also:

Constant Field Values

PROPERTY_TRANSACTION_SCANNER_EXCLUDE_LAYERS

public static final java.lang.String PROPERTY_TRANSACTION_SCANNER_EXCLUDE_LAYERS

Exclude layers from scan

See Also:

Constant Field Values

PROPERTY_TRANSACTION_SCANNER_INCLUDE_LAYERS

public static final java.lang.String PROPERTY_TRANSACTION_SCANNER_INCLUDE_LAYERS

include only these layers in the scan

See Also:

Constant Field Values

PROPERTY_TRANSACTION_SCANNER_SAFTEY_MARGIN_TIME

public static final java.lang.String PROPERTY_TRANSACTION_SCANNER_SAFTEY_MARGIN_TIME

The property to set the safety margin on top of the period of maximum processing time before we mark the task as dead ( milliseconds).

See Also:

Constant Field Values

SAFTEY_MARGIN_TIME

public static final long SAFTEY_MARGIN_TIME

the safety margin on top of the period of maximum processing time before we mark the task as dead ( milliseconds)

SCAN_PERIOD

public static final long SCAN_PERIOD

scan period ( in milliseconds).

MAX_PROCESS_TIME

public static final long MAX_PROCESS_TIME

The MAXIMUM PROCESSING TIME of one call.

Method Detail

disable

public static void disable()

disable the scanner

enable

public static void enable()

enable the scanner

scan

public static void scan()

begin the transaction scanner.

run

public void run()

run

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

isCurrent

@CheckReturnValue
public boolean isCurrent()

Is this the current process ?

Returns:

true if this is the current loader

paused

public void paused()

This process has been paused. MODE: Multi Threaded

Specified by:

paused in interface ServerProcess

resumed

public void resumed()

This process has been resumed. MODE: Multi Threaded

Specified by:

resumed in interface ServerProcess

terminated

public void terminated()

This process has been terminated. MODE: Multi Threaded

Specified by:

terminated in interface ServerProcess

makeThreadName

@CheckReturnValue
 @Nonnull
public java.lang.String makeThreadName()

get the progress message

Specified by:

makeThreadName in interface ServerProcess

Returns:

the string message

checkUp

public static void checkUp()

Check if the background loader is running.