com.goldencode.p2j.jmx

Class SimpleQueryProfiler

java.lang.Object

com.goldencode.p2j.jmx.Facultative

com.goldencode.p2j.jmx.SimpleQueryProfiler

All Implemented Interfaces:

AgentRegistry<BooleanConsumer>, FacultativeMBean, QueryProfiler, SimpleQueryProfilerMBean

public class SimpleQueryProfiler
extends Facultative
implements SimpleQueryProfilerMBean, QueryProfiler

Simple query profiler implementing the query profiler MBean

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	SimpleQueryProfiler.QueryInfo The types of counters for each query

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<java.lang.String,java.util.Map<java.lang.String,java.util.concurrent.atomic.AtomicLong>>	queries Accumulated values

Constructor Summary

Constructors

Constructor and Description
SimpleQueryProfiler()

Method Summary

Modifier and Type	Method and Description
long	getQueryCount() Retrieve the number of queries profiled
java.util.Map<java.lang.String,java.util.Map<java.lang.String,java.lang.Long>>	getValues() Retrieve the values accumulated for each query.
void	print(java.lang.String file) Print the profiling numbers done for each query
void	reset() Reset profiling
java.lang.String	toString(java.lang.String ts, java.lang.String comment) Simple implementation of toString.
void	updateCacheHits(java.lang.String query, long value) Update the number of cache hits of a specified query
void	updateCacheMisses(java.lang.String query, long value) Update the number of cache misses of a specified query
void	updateHydrateTotalTime(java.lang.String query, long value) Update the number of nanoseconds spent in hydrate of a specified query
void	updateRowsCount(java.lang.String query, long value) Update the number of rows retrieved from a result set

Methods inherited from class com.goldencode.p2j.jmx.Facultative

enable, getAnnotation, isEnabled, register, setAnnotation

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.goldencode.p2j.jmx.FacultativeMBean

enable, getAnnotation, isEnabled, setAnnotation

Field Detail

queries

private java.util.Map<java.lang.String,java.util.Map<java.lang.String,java.util.concurrent.atomic.AtomicLong>> queries

Accumulated values

Constructor Detail

SimpleQueryProfiler

public SimpleQueryProfiler()

Method Detail

updateRowsCount

public void updateRowsCount(java.lang.String query,
                            long value)

Update the number of rows retrieved from a result set

Specified by:

updateRowsCount in interface QueryProfiler

Parameters:

query - the query for which the update is done

value - new value

updateCacheHits

public void updateCacheHits(java.lang.String query,
                            long value)

Update the number of cache hits of a specified query

Specified by:

updateCacheHits in interface QueryProfiler

Parameters:

query - the query for which the update is done

value - the number of cache hits

updateCacheMisses

public void updateCacheMisses(java.lang.String query,
                              long value)

Update the number of cache misses of a specified query

Specified by:

updateCacheMisses in interface QueryProfiler

Parameters:

query - the query for which the update is done

value - the number of cache misses

updateHydrateTotalTime

public void updateHydrateTotalTime(java.lang.String query,
                                   long value)

Update the number of nanoseconds spent in hydrate of a specified query

Specified by:

updateHydrateTotalTime in interface QueryProfiler

Parameters:

query - the query for which the update is done

value - the number of nanoseconds spent in hydrate

getValues

public java.util.Map<java.lang.String,java.util.Map<java.lang.String,java.lang.Long>> getValues()

Retrieve the values accumulated for each query.

Specified by:

getValues in interface SimpleQueryProfilerMBean

Returns:

A map of queries and a collection of counters for each query.

getQueryCount

public long getQueryCount()

Retrieve the number of queries profiled

Specified by:

getQueryCount in interface SimpleQueryProfilerMBean

Returns:

The number of queries.

reset

public void reset()

Reset profiling

Specified by:

reset in interface SimpleQueryProfilerMBean

print

public void print(java.lang.String file)
           throws java.io.IOException

Print the profiling numbers done for each query

Specified by:

print in interface SimpleQueryProfilerMBean

Parameters:

file - output file name (will be appended if exists)

Throws:

java.io.IOException - on I/O ERROR

toString

public java.lang.String toString(java.lang.String ts,
                                 java.lang.String comment)

Simple implementation of toString. The timestamp is not relevant.

Specified by:

toString in interface QueryProfiler

Parameters:

ts - the timestamp

comment - a specific comment

Returns:

string representation of the counter