org.eclipse.persistence.tools.profiler
Class PerformanceMonitor

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

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, SessionProfiler

public class PerformanceMonitor
extends java.lang.Object
implements java.io.Serializable, java.lang.Cloneable, SessionProfiler

Purpose: A tool used to provide performance monitoring information in a server environment.

See Also:

Serialized Form

Author:

James Sutherland

Since:

EclipseLink 2.2

Field Summary

protected static java.lang.String	COUNTER
protected long	dumpTime
protected long	lastDumpTime
protected java.util.Map<java.lang.Integer,java.util.Map<java.lang.String,java.lang.Long>>	operationStartTimesByThread
protected java.util.Map<java.lang.String,java.lang.Object>	operationTimings
protected int	profileWeight
protected org.eclipse.persistence.internal.sessions.AbstractSession	session
protected static java.lang.String	TIMER

Fields inherited from interface org.eclipse.persistence.sessions.SessionProfiler

ALL, AssignSequence, CachedObjects, CacheHits, CacheMisses, Caching, ChangeSetsNotProcessed, ChangeSetsProcessed, ClientSessionCreated, ConnectionManagement, ConnectionPing, Connects, DescriptorEvent, Disconnects, DistributedMerge, HEAVY, JtsAfterCompletion, JtsBeforeCompletion, Logging, LoginTime, Merge, NONE, NORMAL, ObjectBuilding, OptimisticLockException, QueryPreparation, RcmReceived, RcmSent, RcmStatus, Register, RemoteChangeSet, RowFetch, SessionEvent, SessionName, SqlGeneration, SqlPrepare, StatementExecute, Transaction, UowCommit, UowCommits, UowCreated, UowRollbacks

Constructor Summary

PerformanceMonitor()
PUBLIC: Create a new profiler.

Method Summary

void	checkDumpTime() Log the results after a set amount of time has passed.
PerformanceMonitor	clone()
void	dumpResults() Log the results to the session's log (System.out).
void	endOperationProfile(java.lang.String operationName) INTERNAL: End the operation timing.
void	endOperationProfile(java.lang.String operationName, DatabaseQuery query, int weight) INTERNAL: End the operation timing.
long	getDumpTime() Return the number of milliseconds after which the monitor results should be logged.
protected java.util.Map<java.lang.String,java.lang.Long>	getOperationStartTimes()
protected java.util.Map<java.lang.Integer,java.util.Map<java.lang.String,java.lang.Long>>	getOperationStartTimesByThread()
java.lang.Object	getOperationTime(java.lang.String operation)
java.util.Map<java.lang.String,java.lang.Object>	getOperationTimings()
int	getProfileWeight() Return the level of profiling.
org.eclipse.persistence.internal.sessions.AbstractSession	getSession()
void	initialize() INTERNAL: Initialize EclipseLink noun tree(DMS)
void	occurred(java.lang.String operationName) INTERNAL: Increase DMS Event sensor occurrence.
void	occurred(java.lang.String operationName, DatabaseQuery query) INTERNAL: Increase DMS Event sensor occurrence.
java.lang.Object	profileExecutionOfQuery(DatabaseQuery query, Record row, org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Monitoring is done on the endOperation only.
void	setDumpTime(long dumpTime) Set the number of milliseconds after which the monitor results should be logged.
void	setProfileWeight(int profileWeight) Set the level of profiling.
void	setSession(Session session) INTERNAL: Set the session.
void	startOperationProfile(java.lang.String operationName) INTERNAL: Start the operation timing.
void	startOperationProfile(java.lang.String operationName, DatabaseQuery query, int weight) INTERNAL: Start the operation timing.
void	update(java.lang.String operationName, java.lang.Object value) INTERNAL: Update the value of the State sensor.

Methods inherited from class java.lang.Object

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

Field Detail

COUNTER

protected static final java.lang.String COUNTER

See Also:

Constant Field Values

TIMER

protected static final java.lang.String TIMER

See Also:

Constant Field Values

session

protected transient org.eclipse.persistence.internal.sessions.AbstractSession session

operationTimings

protected java.util.Map<java.lang.String,java.lang.Object> operationTimings

operationStartTimesByThread

protected java.util.Map<java.lang.Integer,java.util.Map<java.lang.String,java.lang.Long>> operationStartTimesByThread

lastDumpTime

protected long lastDumpTime

dumpTime

protected long dumpTime

profileWeight

protected int profileWeight

Constructor Detail

PerformanceMonitor

public PerformanceMonitor()

PUBLIC: Create a new profiler. The profiler can be registered with a session to log performance information on queries.

Method Detail

getDumpTime

public long getDumpTime()

Return the number of milliseconds after which the monitor results should be logged.

setDumpTime

public void setDumpTime(long dumpTime)

Set the number of milliseconds after which the monitor results should be logged.

clone

public PerformanceMonitor clone()

Overrides:

clone in class java.lang.Object

checkDumpTime

public void checkDumpTime()

Log the results after a set amount of time has passed.

dumpResults

public void dumpResults()

Log the results to the session's log (System.out).

endOperationProfile

public void endOperationProfile(java.lang.String operationName)

INTERNAL: End the operation timing.

Specified by:

endOperationProfile in interface SessionProfiler

endOperationProfile

public void endOperationProfile(java.lang.String operationName,
                                DatabaseQuery query,
                                int weight)

INTERNAL: End the operation timing.

Specified by:

endOperationProfile in interface SessionProfiler

getOperationStartTimes

protected java.util.Map<java.lang.String,java.lang.Long> getOperationStartTimes()

getOperationStartTimesByThread

protected java.util.Map<java.lang.Integer,java.util.Map<java.lang.String,java.lang.Long>> getOperationStartTimesByThread()

getOperationTime

public java.lang.Object getOperationTime(java.lang.String operation)

getOperationTimings

public java.util.Map<java.lang.String,java.lang.Object> getOperationTimings()

getSession

public org.eclipse.persistence.internal.sessions.AbstractSession getSession()

profileExecutionOfQuery

public java.lang.Object profileExecutionOfQuery(DatabaseQuery query,
                                                Record row,
                                                org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL: Monitoring is done on the endOperation only.

Specified by:

profileExecutionOfQuery in interface SessionProfiler

Returns:

the execution result of the query.

setSession

public void setSession(Session session)

Description copied from interface: SessionProfiler

INTERNAL: Set the session.

Specified by:

setSession in interface SessionProfiler

startOperationProfile

public void startOperationProfile(java.lang.String operationName)

INTERNAL: Start the operation timing.

Specified by:

startOperationProfile in interface SessionProfiler

startOperationProfile

public void startOperationProfile(java.lang.String operationName,
                                  DatabaseQuery query,
                                  int weight)

INTERNAL: Start the operation timing.

Specified by:

startOperationProfile in interface SessionProfiler

update

public void update(java.lang.String operationName,
                   java.lang.Object value)

Description copied from interface: SessionProfiler

INTERNAL: Update the value of the State sensor.(DMS)

Specified by:

update in interface SessionProfiler

occurred

public void occurred(java.lang.String operationName)

Description copied from interface: SessionProfiler

INTERNAL: Increase DMS Event sensor occurrence.(DMS)

Specified by:

occurred in interface SessionProfiler

occurred

public void occurred(java.lang.String operationName,
                     DatabaseQuery query)

Description copied from interface: SessionProfiler

INTERNAL: Increase DMS Event sensor occurrence.(DMS)

Specified by:

occurred in interface SessionProfiler

setProfileWeight

public void setProfileWeight(int profileWeight)

Set the level of profiling. One of ALL, HEAVY, NORMAL, NONE. The higher the level, the more operations are profiled.

Specified by:

setProfileWeight in interface SessionProfiler

See Also:

SessiobProfiler

getProfileWeight

public int getProfileWeight()

Return the level of profiling. One of ALL, HEAVY, NORMAL, NONE.

Specified by:

getProfileWeight in interface SessionProfiler

See Also:

SessiobProfiler

initialize

public void initialize()

Description copied from interface: SessionProfiler

INTERNAL: Initialize EclipseLink noun tree(DMS)

Specified by:

initialize in interface SessionProfiler