org.eclipse.ocl.examples.eventmanager.util
Class Statistics

java.lang.Object
  org.eclipse.ocl.examples.eventmanager.util.Statistics

Direct Known Subclasses:

StatisticsImpl, StatisticsStub

public abstract class Statistics
extends java.lang.Object

To gather statistics about the OCL Impact Analysis and EMF Event Manager, set the system property org.eclipse.ocl.examples.impactanalyzer.statistics to true. Otherwise, calls to getInstance() will return a mock object whose methods don't do anything and therefore should not contribute significantly to overall performance characteristics. If the system property is set, however, statistics will be gathered and can obtained at the end of a test / measurement run by using methods on the result of getInstance() such as getAverage(String) passing in any of the groupIds returned by getGroupIds(). All individual records of a group can be obtained by getRecords(String).

Nested Class Summary

static class

Statistics.Record

Constructor Summary

Statistics()

Method Summary

java.lang.String	asCSV()
java.util.Map<java.lang.String,java.lang.String>	asCSVMapByGroupId() Keys are the group IDs, values are the CSV lists for the group whose ID is the entry's key
java.lang.String	asSV(java.lang.String columnSeparator)
java.util.Map<java.lang.String,java.lang.String>	asSVMapByGroupId(java.lang.String columnSeparator)
java.lang.String	averageAsCVS()
java.lang.String	averageAsSV(java.lang.String columnSeparator)
abstract void	begin(java.lang.String groupId, java.lang.Object key) Starts measuring a time span until end(String, Object) is called with equal groupId and key.
abstract void	clear()
abstract void	end(java.lang.String groupId, java.lang.Object key)
double	getAverage(java.lang.String groupId)
abstract java.util.Set<java.lang.String>	getGroupIds()
static Statistics	getInstance()
abstract java.util.List<Statistics.Record>	getRecords(java.lang.String groupId)
abstract void	record(java.lang.String groupId, java.lang.Object key, long value) Records a single value (could be a time measured other than with begin(String, Object) and end(String, Object), but could also be any other quantity over which later aggregation may be performed.

Methods inherited from class java.lang.Object

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

Constructor Detail

Statistics

public Statistics()

Method Detail

getInstance

public static Statistics getInstance()

begin

public abstract void begin(java.lang.String groupId,
                           java.lang.Object key)

Starts measuring a time span until end(String, Object) is called with equal groupId and key. Averages can be computed later for different keys with equal groupId.

end

public abstract void end(java.lang.String groupId,
                         java.lang.Object key)

record

public abstract void record(java.lang.String groupId,
                            java.lang.Object key,
                            long value)

Records a single value (could be a time measured other than with begin(String, Object) and end(String, Object), but could also be any other quantity over which later aggregation may be performed.

getRecords

public abstract java.util.List<Statistics.Record> getRecords(java.lang.String groupId)

getGroupIds

public abstract java.util.Set<java.lang.String> getGroupIds()

clear

public abstract void clear()

getAverage

public double getAverage(java.lang.String groupId)

averageAsSV

public java.lang.String averageAsSV(java.lang.String columnSeparator)

averageAsCVS

public java.lang.String averageAsCVS()

asCSVMapByGroupId

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

Keys are the group IDs, values are the CSV lists for the group whose ID is the entry's key

asSVMapByGroupId

public java.util.Map<java.lang.String,java.lang.String> asSVMapByGroupId(java.lang.String columnSeparator)

asSV

public java.lang.String asSV(java.lang.String columnSeparator)

asCSV

public java.lang.String asCSV()