org.apache.jmeter.functions

Class Jexl3Function

java.lang.Object

org.apache.jmeter.functions.AbstractFunction

org.apache.jmeter.functions.Jexl3Function

All Implemented Interfaces:

Function, ThreadListener

public class Jexl3Function
extends AbstractFunction
implements ThreadListener

A function which understands Commons JEXL3

Since:

3.0

Constructor Summary

Constructors

Constructor and Description
Jexl3Function()

Method Summary

Modifier and Type	Method and Description
String	execute(SampleResult previousResult, Sampler currentSampler) N.B.
List<String>	getArgumentDesc() Return a list of strings briefly describing each parameter your function takes.
String	getReferenceKey() Return the name of your function.
void	setParameters(Collection<CompoundVariable> parameters) Note: This is always called even if no parameters are provided (versions of JMeter after 2.3.1)
void	threadFinished() Called for each thread after all samples have been processed.
void	threadStarted() Called for each thread before starting sampling.

Methods inherited from class org.apache.jmeter.functions.AbstractFunction

addVariableValue, checkMinParameterCount, checkParameterCount, checkParameterCount, execute, getVariables

Methods inherited from class java.lang.Object

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

Constructor Detail

Jexl3Function

public Jexl3Function()

Method Detail

execute

public String execute(SampleResult previousResult,
                      Sampler currentSampler)
               throws InvalidVariableException

N.B. execute() should be synchronized if function is operating with non-thread-safe objects (e.g. operates with files).

JMeter ensures setParameters() happens-before execute(): setParameters is executed in main thread, and worker threads are started after that.

Specified by:

execute in interface Function

Specified by:

execute in class AbstractFunction

Parameters:

previousResult - The previous SampleResult

currentSampler - The current Sampler

Returns:

The replacement value, which was generated by the function

Throws:

InvalidVariableException - - when the variables for the function call can't be evaluated

See Also:

Function.execute(SampleResult, Sampler)

getArgumentDesc

public List<String> getArgumentDesc()

Return a list of strings briefly describing each parameter your function takes. Please use JMeterUtils.getResString(resource_name) to grab a resource string. Otherwise, your help text will be difficult to internationalize. This list is not optional. If you don't wish to write help, you must at least return a List containing the correct number of blank strings, one for each argument.

Specified by:

getArgumentDesc in interface Function

Returns:

List with brief descriptions for each parameter the function takes

getReferenceKey

public String getReferenceKey()

Return the name of your function. Convention is to prepend "__" to the name (ie "__regexFunction")

Specified by:

getReferenceKey in interface Function

Specified by:

getReferenceKey in class AbstractFunction

Returns:

The name of the function

See Also:

Function.getReferenceKey()

setParameters

public void setParameters(Collection<CompoundVariable> parameters)
                   throws InvalidVariableException

Note: This is always called even if no parameters are provided (versions of JMeter after 2.3.1)

Specified by:

setParameters in interface Function

Specified by:

setParameters in class AbstractFunction

Parameters:

parameters - The parameters for the function call

Throws:

InvalidVariableException - - when the variables for the function call can't be evaluated

See Also:

Function.setParameters(Collection)

threadStarted

public void threadStarted()

Description copied from interface: ThreadListener

Called for each thread before starting sampling. WARNING: this is called before any Config test elements are processed, so any properties they define will not have been merged in yet. See org.apache.jmeter.threads.JMeterThread#threadStarted()

Specified by:

threadStarted in interface ThreadListener

threadFinished

public void threadFinished()

Description copied from interface: ThreadListener

Called for each thread after all samples have been processed. See org.apache.jmeter.threads.JMeterThread#threadFinished(org.apache.jmeter.engine.event.LoopIterationListener)

Specified by:

threadFinished in interface ThreadListener