Apache jMeter : Perform load test and delay verification - jmeter

Question

I would like to perform a load test on a SOAP webservice.
There are two requests :
createDocument. Input: name, size, date. Output: id's document newly created
getDocument. Input: document id. Output: id, name, size, date
I would like to perform a load test on the createDocument method. Not rocket science, I use the SOAP sampler, very simple.
But in a second step, after the load test (for performance reason) I would to check if the document are really created by calling getDocument with the id.
My idea :
Create a Thread Group for the SOAP sampler
On the Thread Group, add a postprocessor Beanshell
in the postprocessor, store the document id in a Java list
Create an other Thread Group for the verification
In the Test Plan, check "Run Thread Groups consecutively"
In the verification Thread find a way to loop the Java list
For each id, perform a SOAP call
I don't know how to loop over a Java list and call a SOAP sampler for each iteration. Any idea ?
Or generally, do you have a solution more jMeter compliant ?
Thank you

Answer 1

In the second thread group:
Add a Beanshell Sampler which will iterate through the list with document IDs and store them into JMeter Variables, something like:
List IDs = bsh.shared.IDs;
int counter = 1;
for (String ID : IDs){
vars.put("ID_" + counter,ID);
counter++;
}
This will result in variables like:
ID_1=somedocumentid
ID_2=someotherdocumentid
....
etc.
Add a ForEach Controller and configure it as follows:
Input Variable Prefix: ID
Output Variable Name: anything meaningful, i.e. CURRENT_ID
Make sure that "Add "_" before number" is checked
ForEach Controller will iterate through all defined variables with ID_ prefix and you will be able to refer the current value as ${CURRENT_ID}
Reference material:
Sharing Variables chapter of JMeter's User Manual Best Practices
How to use BeanShell: JMeter's favorite built-in component guide
ForEach Controller documentation entry