Preprocessor implementation

[ge...@jpmorgan.com]

Hi:
    I have implemented a Preprocessor to alter the value of some fields in 
my Sampler before it is executed. For example, I am sending xml over 
Tibco, and
I want to update one of the elements in my xml with dynamic content 
returned from the previous sample.

I am able to get the dynamic field from the previous sample, but when I 
try to update the example in the current sample I notice that the field is 
null. It seems that these fields are intialized when the test starts up, 
since they are static content. I noticed this process in the log file. Any 
idea about what I am doing wrong?


Here is the code in my Preprocessor implementation, the xmlData is null at 
line marked 1>

TibcoSampler currentSampler = (TibcoSampler) getThreadContext()
                                .getCurrentSampler();
 
1> LOG.debug("XML DATA = "+currentSampler.getXmlData());

 currentSampler.setXmlData(currentSampler.getXmlData().replaceAll(
                                "REPLACE", value));


Thanks in advance
-Jerry
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Re: Preprocessor implementation

[sebb <se...@gmail.com>]

On 18/11/05, gerald.d.wey@jpmorgan.com <ge...@jpmorgan.com> wrote:
> Hi:
>    I have implemented a Preprocessor to alter the value of some fields in
> my Sampler before it is executed. For example, I am sending xml over
> Tibco, and
> I want to update one of the elements in my xml with dynamic content
> returned from the previous sample.
>
> I am able to get the dynamic field from the previous sample, but when I
> try to update the example in the current sample I notice that the field is
> null. It seems that these fields are intialized when the test starts up,
> since they are static content. I noticed this process in the log file. Any
> idea about what I am doing wrong?
>
>
> Here is the code in my Preprocessor implementation, the xmlData is null at
> line marked 1>
>
> TibcoSampler currentSampler = (TibcoSampler) getThreadContext()
>                                .getCurrentSampler();
>
> 1> LOG.debug("XML DATA = "+currentSampler.getXmlData());
>
>  currentSampler.setXmlData(currentSampler.getXmlData().replaceAll(
>                                "REPLACE", value));


Perhaps the TibcoSampler does not call setXmlData() ?

In the current JMeter, this is only set by the WebServiceSampler in the Gui.

S.

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