org.eclipse.persistence.tools.profiler
Class FetchGroupMonitor

java.lang.Object
  org.eclipse.persistence.tools.profiler.FetchGroupMonitor

public class FetchGroupMonitor
extends java.lang.Object

Purpose: Provide a very simple low overhead means for measuring fetch group field usage. This can be useful for performance analysis in a complex system. This monitor is enabled through the System property "org.eclipse.persistence.fetchgroupmonitor=true". It dumps the attribute used for a class every time a new attribute is accessed.

Author:

James Sutherland

Since:

TopLink 10.1.3.2

Field Summary

static java.util.Hashtable	fetchedAttributes
static java.lang.Boolean	shouldMonitor

Constructor Summary

FetchGroupMonitor()

Method Summary

static void	recordFetchedAttribute(java.lang.Class domainClass, java.lang.String attributeName)
static boolean	shouldMonitor()

Methods inherited from class java.lang.Object

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

Field Detail

fetchedAttributes

public static java.util.Hashtable fetchedAttributes

shouldMonitor

public static java.lang.Boolean shouldMonitor

Constructor Detail

FetchGroupMonitor

public FetchGroupMonitor()

Method Detail

shouldMonitor

public static boolean shouldMonitor()

recordFetchedAttribute

public static void recordFetchedAttribute(java.lang.Class domainClass,
                                          java.lang.String attributeName)