Mike,
I'm writing some functions to generate sequential and random numbers
with the ability to re-seed the random number generator, so that after
the first sequential or random number the following random numbers will
be repeatable. This allows me to generate repeatable pseudo-random data.
Rather than making this one function with lots of arguments, I wanted to
split it up into more frendly smaller functions, for example:
${__seq(setSeed)}, ${__rand(max, setSeed)}.
I have two minor problems:
1. I wrote the functions as inner classes, since they are closely
related and need to share data. However the call to
ClassFinder.findClassesThatExtend() in CompoundFunction.java does not
discover inner classes. This is easily fixed by adding a boolean "true"
argument.
2. My functions are being called twice for each variable substitution,
which means that I only get every other sequential number in my test
data. replaceValues() in TestCompiler.java is called twice from
configureSampler() [directly from line 115 and indirectly via
layeredElement() on line 123]. I have not found an easy way to stop the
duplicate call in configureSampler(). Instead I am keeping a WeakHashMap
in my function's execute() methods that detects if it is called with the
same SampleResult, but this is a bit messy.
//derek
Mike Stover wrote:
>Users,
> There is a new unstable release -> 1.7.2. It seems pretty solid so far, and I
>have more
>confidence in it at this point than the previous production release (1.7).
>
>Developers/power users,
> I've made a first pass at the GUI elements related to the new functions.
>There is a
>brief doc page about functions (only in CVS, not on website). User
>defined variables can be created in the TestPlan GUI element, and a dialog can
>assist you in generating the correct syntax for your function calls. The dialog is
>available from the "Options" menu. Currently, there is only one function implemented
>(but it's
>an interesting one).
>
>Creating new functions should be easy and fun (hint, hint). You don't need to write
>any GUI
>code. Just follow the directions in the JavaDocs for the
>org.apache.jmeter.functions.Function
>interface. Also org.apache.jmeter.functions.AbstractFunction, which you may want to
>extend.
>
>--
>Michael Stover
>[EMAIL PROTECTED]
>Yahoo IM: mstover_ya
>ICQ: 152975688
>
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___________________
Derek Baum
Paremus Limited
+44 (0)20 7936 9396
www.paremus.com
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